Commit Graph

9073 Commits

Author SHA1 Message Date
Linus Torvalds
d30d0e49da Including fixes from BPF and big collection of fixes for WiFi core
and drivers.
 
 Current release - regressions:
 
  - vxlan: fix regression when dropping packets due to invalid src addresses
 
  - bpf: fix a potential use-after-free in bpf_link_free()
 
  - xdp: revert support for redirect to any xsk socket bound to the same
    UMEM as it can result in a corruption
 
  - virtio_net:
    - add missing lock protection when reading return code from control_buf
    - fix false-positive lockdep splat in DIM
    - Revert "wifi: wilc1000: convert list management to RCU"
 
  - wifi: ath11k: fix error path in ath11k_pcic_ext_irq_config
 
 Previous releases - regressions:
 
  - rtnetlink: make the "split" NLM_DONE handling generic, restore the old
    behavior for two cases where we started coalescing those messages with
    normal messages, breaking sloppily-coded userspace
 
  - wifi:
    - cfg80211: validate HE operation element parsing
    - cfg80211: fix 6 GHz scan request building
    - mt76: mt7615: add missing chanctx ops
    - ath11k: move power type check to ASSOC stage, fix connecting
      to 6 GHz AP
    - ath11k: fix WCN6750 firmware crash caused by 17 num_vdevs
    - rtlwifi: ignore IEEE80211_CONF_CHANGE_RETRY_LIMITS
    - iwlwifi: mvm: fix a crash on 7265
 
 Previous releases - always broken:
 
  - ncsi: prevent multi-threaded channel probing, a spec violation
 
  - vmxnet3: disable rx data ring on dma allocation failure
 
  - ethtool: init tsinfo stats if requested, prevent unintentionally
    reporting all-zero stats on devices which don't implement any
 
  - dst_cache: fix possible races in less common IPv6 features
 
  - tcp: auth: don't consider TCP_CLOSE to be in TCP_AO_ESTABLISHED
 
  - ax25: fix two refcounting bugs
 
  - eth: ionic: fix kernel panic in XDP_TX action
 
 Misc:
 
  - tcp: count CLOSE-WAIT sockets for TCP_MIB_CURRESTAB
 
 Signed-off-by: Jakub Kicinski <kuba@kernel.org>
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Merge tag 'net-6.10-rc3' of git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net

Pull networking fixes from Jakub Kicinski:
 "Including fixes from BPF and big collection of fixes for WiFi core and
  drivers.

  Current release - regressions:

   - vxlan: fix regression when dropping packets due to invalid src
     addresses

   - bpf: fix a potential use-after-free in bpf_link_free()

   - xdp: revert support for redirect to any xsk socket bound to the
     same UMEM as it can result in a corruption

   - virtio_net:
      - add missing lock protection when reading return code from
        control_buf
      - fix false-positive lockdep splat in DIM
      - Revert "wifi: wilc1000: convert list management to RCU"

   - wifi: ath11k: fix error path in ath11k_pcic_ext_irq_config

  Previous releases - regressions:

   - rtnetlink: make the "split" NLM_DONE handling generic, restore the
     old behavior for two cases where we started coalescing those
     messages with normal messages, breaking sloppily-coded userspace

   - wifi:
      - cfg80211: validate HE operation element parsing
      - cfg80211: fix 6 GHz scan request building
      - mt76: mt7615: add missing chanctx ops
      - ath11k: move power type check to ASSOC stage, fix connecting to
        6 GHz AP
      - ath11k: fix WCN6750 firmware crash caused by 17 num_vdevs
      - rtlwifi: ignore IEEE80211_CONF_CHANGE_RETRY_LIMITS
      - iwlwifi: mvm: fix a crash on 7265

  Previous releases - always broken:

   - ncsi: prevent multi-threaded channel probing, a spec violation

   - vmxnet3: disable rx data ring on dma allocation failure

   - ethtool: init tsinfo stats if requested, prevent unintentionally
     reporting all-zero stats on devices which don't implement any

   - dst_cache: fix possible races in less common IPv6 features

   - tcp: auth: don't consider TCP_CLOSE to be in TCP_AO_ESTABLISHED

   - ax25: fix two refcounting bugs

   - eth: ionic: fix kernel panic in XDP_TX action

  Misc:

   - tcp: count CLOSE-WAIT sockets for TCP_MIB_CURRESTAB"

* tag 'net-6.10-rc3' of git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net: (107 commits)
  selftests: net: lib: set 'i' as local
  selftests: net: lib: avoid error removing empty netns name
  selftests: net: lib: support errexit with busywait
  net: ethtool: fix the error condition in ethtool_get_phy_stats_ethtool()
  ipv6: fix possible race in __fib6_drop_pcpu_from()
  af_unix: Annotate data-race of sk->sk_shutdown in sk_diag_fill().
  af_unix: Use skb_queue_len_lockless() in sk_diag_show_rqlen().
  af_unix: Use skb_queue_empty_lockless() in unix_release_sock().
  af_unix: Use unix_recvq_full_lockless() in unix_stream_connect().
  af_unix: Annotate data-race of net->unx.sysctl_max_dgram_qlen.
  af_unix: Annotate data-races around sk->sk_sndbuf.
  af_unix: Annotate data-races around sk->sk_state in UNIX_DIAG.
  af_unix: Annotate data-race of sk->sk_state in unix_stream_read_skb().
  af_unix: Annotate data-races around sk->sk_state in sendmsg() and recvmsg().
  af_unix: Annotate data-race of sk->sk_state in unix_accept().
  af_unix: Annotate data-race of sk->sk_state in unix_stream_connect().
  af_unix: Annotate data-races around sk->sk_state in unix_write_space() and poll().
  af_unix: Annotate data-race of sk->sk_state in unix_inq_len().
  af_unix: Annodate data-races around sk->sk_state for writers.
  af_unix: Set sk->sk_state under unix_state_lock() for truly disconencted peer.
  ...
2024-06-06 09:55:27 -07:00
Jeff Johnson
c6cab01d7e lib/test_rhashtable: add missing MODULE_DESCRIPTION() macro
make allmodconfig && make W=1 C=1 reports:
WARNING: modpost: missing MODULE_DESCRIPTION() in lib/test_rhashtable.o

Add the missing invocation of the MODULE_DESCRIPTION() macro.

Signed-off-by: Jeff Johnson <quic_jjohnson@quicinc.com>
Link: https://lore.kernel.org/r/20240531-md-lib-test_rhashtable-v1-1-cd6d4138f1b6@quicinc.com
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
2024-06-03 18:51:18 -07:00
Kees Cook
99a6087dfd kunit/fortify: Remove __kmalloc_node() test
__kmalloc_node() is considered an "internal" function to the Slab, so
drop it from explicit testing.

Link: https://lore.kernel.org/r/20240531185703.work.588-kees@kernel.org
Signed-off-by: Kees Cook <kees@kernel.org>
2024-05-31 13:47:41 -07:00
Linus Torvalds
9b62e02e63 16 hotfixes, 11 of which are cc:stable.
A few nilfs2 fixes, the remainder are for MM: a couple of selftests fixes,
 various singletons fixing various issues in various parts.
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Merge tag 'mm-hotfixes-stable-2024-05-25-09-13' of git://git.kernel.org/pub/scm/linux/kernel/git/akpm/mm

Pull misc fixes from Andrew Morton:
 "16 hotfixes, 11 of which are cc:stable.

  A few nilfs2 fixes, the remainder are for MM: a couple of selftests
  fixes, various singletons fixing various issues in various parts"

* tag 'mm-hotfixes-stable-2024-05-25-09-13' of git://git.kernel.org/pub/scm/linux/kernel/git/akpm/mm:
  mm/ksm: fix possible UAF of stable_node
  mm/memory-failure: fix handling of dissolved but not taken off from buddy pages
  mm: /proc/pid/smaps_rollup: avoid skipping vma after getting mmap_lock again
  nilfs2: fix potential hang in nilfs_detach_log_writer()
  nilfs2: fix unexpected freezing of nilfs_segctor_sync()
  nilfs2: fix use-after-free of timer for log writer thread
  selftests/mm: fix build warnings on ppc64
  arm64: patching: fix handling of execmem addresses
  selftests/mm: compaction_test: fix bogus test success and reduce probability of OOM-killer invocation
  selftests/mm: compaction_test: fix incorrect write of zero to nr_hugepages
  selftests/mm: compaction_test: fix bogus test success on Aarch64
  mailmap: update email address for Satya Priya
  mm/huge_memory: don't unpoison huge_zero_folio
  kasan, fortify: properly rename memintrinsics
  lib: add version into /proc/allocinfo output
  mm/vmalloc: fix vmalloc which may return null if called with __GFP_NOFAIL
2024-05-25 15:10:33 -07:00
Suren Baghdasaryan
a38568a0b4 lib: add version into /proc/allocinfo output
Add version string and a header at the beginning of /proc/allocinfo to
allow later format changes.  Example output:

> head /proc/allocinfo
allocinfo - version: 1.0
#     <size>  <calls> <tag info>
           0        0 init/main.c:1314 func:do_initcalls
           0        0 init/do_mounts.c:353 func:mount_nodev_root
           0        0 init/do_mounts.c:187 func:mount_root_generic
           0        0 init/do_mounts.c:158 func:do_mount_root
           0        0 init/initramfs.c:493 func:unpack_to_rootfs
           0        0 init/initramfs.c:492 func:unpack_to_rootfs
           0        0 init/initramfs.c:491 func:unpack_to_rootfs
         512        1 arch/x86/events/rapl.c:681 func:init_rapl_pmus
         128        1 arch/x86/events/rapl.c:571 func:rapl_cpu_online

[akpm@linux-foundation.org: remove stray newline from struct allocinfo_private]
Link: https://lkml.kernel.org/r/20240514163128.3662251-1-surenb@google.com
Signed-off-by: Suren Baghdasaryan <surenb@google.com>
Reviewed-by: Pasha Tatashin <pasha.tatashin@soleen.com>
Reviewed-by: Kees Cook <keescook@chromium.org>
Cc: Kent Overstreet <kent.overstreet@linux.dev>
Cc: Vlastimil Babka <vbabka@suse.cz>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
2024-05-24 11:55:05 -07:00
Linus Torvalds
b0a9ba13ff hardening fixes for v6.10-rc1
- loadpin: Prevent SECURITY_LOADPIN_ENFORCE=y without module decompression
   (Stephen Boyd)
 
 - ubsan: Restore dependency on ARCH_HAS_UBSAN
 
 - kunit/fortify: Fix memcmp() test to be amplitude agnostic
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Merge tag 'hardening-v6.10-rc1-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/kees/linux

Pull hardening fixes from Kees Cook:

 - loadpin: Prevent SECURITY_LOADPIN_ENFORCE=y without module
   decompression (Stephen Boyd)

 - ubsan: Restore dependency on ARCH_HAS_UBSAN

 - kunit/fortify: Fix memcmp() test to be amplitude agnostic

* tag 'hardening-v6.10-rc1-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/kees/linux:
  kunit/fortify: Fix memcmp() test to be amplitude agnostic
  ubsan: Restore dependency on ARCH_HAS_UBSAN
  loadpin: Prevent SECURITY_LOADPIN_ENFORCE=y without module decompression
2024-05-24 08:33:44 -07:00
Linus Torvalds
c760b3725e - A series ("kbuild: enable more warnings by default") from Arnd
Bergmann which enables a number of additional build-time warnings.  We
   fixed all the fallout which we could find, there may still be a few
   stragglers.
 
 - Samuel Holland has developed the series "Unified cross-architecture
   kernel-mode FPU API".  This does a lot of consolidation of
   per-architecture kernel-mode FPU usage and enables the use of newer AMD
   GPUs on RISC-V.
 
 - Tao Su has fixed some selftests build warnings in the series
   "Selftests: Fix compilation warnings due to missing _GNU_SOURCE
   definition".
 
 - This pull also includes a nilfs2 fixup from Ryusuke Konishi.
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Merge tag 'mm-nonmm-stable-2024-05-22-17-30' of git://git.kernel.org/pub/scm/linux/kernel/git/akpm/mm

Pull more non-mm updates from Andrew Morton:

 - A series ("kbuild: enable more warnings by default") from Arnd
   Bergmann which enables a number of additional build-time warnings. We
   fixed all the fallout which we could find, there may still be a few
   stragglers.

 - Samuel Holland has developed the series "Unified cross-architecture
   kernel-mode FPU API". This does a lot of consolidation of
   per-architecture kernel-mode FPU usage and enables the use of newer
   AMD GPUs on RISC-V.

 - Tao Su has fixed some selftests build warnings in the series
   "Selftests: Fix compilation warnings due to missing _GNU_SOURCE
   definition".

 - This pull also includes a nilfs2 fixup from Ryusuke Konishi.

* tag 'mm-nonmm-stable-2024-05-22-17-30' of git://git.kernel.org/pub/scm/linux/kernel/git/akpm/mm: (23 commits)
  nilfs2: make block erasure safe in nilfs_finish_roll_forward()
  selftests/harness: use 1024 in place of LINE_MAX
  Revert "selftests/harness: remove use of LINE_MAX"
  selftests/fpu: allow building on other architectures
  selftests/fpu: move FP code to a separate translation unit
  drm/amd/display: use ARCH_HAS_KERNEL_FPU_SUPPORT
  drm/amd/display: only use hard-float, not altivec on powerpc
  riscv: add support for kernel-mode FPU
  x86: implement ARCH_HAS_KERNEL_FPU_SUPPORT
  powerpc: implement ARCH_HAS_KERNEL_FPU_SUPPORT
  LoongArch: implement ARCH_HAS_KERNEL_FPU_SUPPORT
  lib/raid6: use CC_FLAGS_FPU for NEON CFLAGS
  arm64: crypto: use CC_FLAGS_FPU for NEON CFLAGS
  arm64: implement ARCH_HAS_KERNEL_FPU_SUPPORT
  ARM: crypto: use CC_FLAGS_FPU for NEON CFLAGS
  ARM: implement ARCH_HAS_KERNEL_FPU_SUPPORT
  arch: add ARCH_HAS_KERNEL_FPU_SUPPORT
  x86/fpu: fix asm/fpu/types.h include guard
  kbuild: enable -Wcast-function-type-strict unconditionally
  kbuild: enable -Wformat-truncation on clang
  ...
2024-05-22 18:59:29 -07:00
Linus Torvalds
5c6f4d68e2 A series from Dave Chinner which cleans up and fixes the handling of
nested allocations within stackdepot and page-owner.
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Merge tag 'mm-stable-2024-05-22-17-22' of git://git.kernel.org/pub/scm/linux/kernel/git/akpm/mm

Pull more mm updates from Andrew Morton:
 "A series from Dave Chinner which cleans up and fixes the handling of
  nested allocations within stackdepot and page-owner"

* tag 'mm-stable-2024-05-22-17-22' of git://git.kernel.org/pub/scm/linux/kernel/git/akpm/mm:
  mm/page-owner: use gfp_nested_mask() instead of open coded masking
  stackdepot: use gfp_nested_mask() instead of open coded masking
  mm: lift gfp_kmemleak_mask() to gfp.h
2024-05-22 17:32:04 -07:00
Linus Torvalds
f6b8e86b7a TTY/Serial changes for 6.10-rc1
Here is the big set of tty/serial driver changes for 6.10-rc1.  Included
 in here are:
   - Usual good set of api cleanups and evolution by Jiri Slaby to make
     the serial interfaces move out of the 1990's by using kfifos instead
     of hand-rolling their own logic.
   - 8250_exar driver updates
   - max3100 driver updates
   - sc16is7xx driver updates
   - exar driver updates
   - sh-sci driver updates
   - tty ldisc api addition to help refuse bindings
   - other smaller serial driver updates
 
 All of these have been in linux-next for a while with no reported
 issues.
 
 Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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Merge tag 'tty-6.10-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/tty

Pull tty / serial updates from Greg KH:
 "Here is the big set of tty/serial driver changes for 6.10-rc1.
  Included in here are:

   - Usual good set of api cleanups and evolution by Jiri Slaby to make
     the serial interfaces move out of the 1990's by using kfifos
     instead of hand-rolling their own logic.

   - 8250_exar driver updates

   - max3100 driver updates

   - sc16is7xx driver updates

   - exar driver updates

   - sh-sci driver updates

   - tty ldisc api addition to help refuse bindings

   - other smaller serial driver updates

  All of these have been in linux-next for a while with no reported
  issues"

* tag 'tty-6.10-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/tty: (113 commits)
  serial: Clear UPF_DEAD before calling tty_port_register_device_attr_serdev()
  serial: imx: Raise TX trigger level to 8
  serial: 8250_pnp: Simplify "line" related code
  serial: sh-sci: simplify locking when re-issuing RXDMA fails
  serial: sh-sci: let timeout timer only run when DMA is scheduled
  serial: sh-sci: describe locking requirements for invalidating RXDMA
  serial: sh-sci: protect invalidating RXDMA on shutdown
  tty: add the option to have a tty reject a new ldisc
  serial: core: Call device_set_awake_path() for console port
  dt-bindings: serial: brcm,bcm2835-aux-uart: convert to dtschema
  tty: serial: uartps: Add support for uartps controller reset
  arm64: zynqmp: Add resets property for UART nodes
  dt-bindings: serial: cdns,uart: Add optional reset property
  serial: 8250_pnp: Switch to DEFINE_SIMPLE_DEV_PM_OPS()
  serial: 8250_exar: Keep the includes sorted
  serial: 8250_exar: Make type of bit the same in exar_ee_*_bit()
  serial: 8250_exar: Use BIT() in exar_ee_read()
  serial: 8250_exar: Switch to use dev_err_probe()
  serial: 8250_exar: Return directly from switch-cases
  serial: 8250_exar: Decrease indentation level
  ...
2024-05-22 11:53:02 -07:00
Linus Torvalds
4865a27c66 bitmap patches for 6.10
Hi Linus,
 
 Please pull patches for 6.10. This includes:
  - topology_span_sane() optimization from Kyle Meyer;
  - fns() rework from Kuan-Wei Chiu (used in
    cpumask_local_spread() and other places); and
  - headers cleanup from Andy.
 
 This also adds a MAINTAINERS record for bitops API as it's unattended,
 and I'd like to follow it closer.
 
 Thanks,
 Yury
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Merge tag 'bitmap-for-6.10v2' of https://github.com/norov/linux

Pull bitmap updates from Yury Norov:

 - topology_span_sane() optimization from Kyle Meyer

 - fns() rework from Kuan-Wei Chiu (used in cpumask_local_spread() and
   other places)

 - headers cleanup from Andy

 - add a MAINTAINERS record for bitops API

* tag 'bitmap-for-6.10v2' of https://github.com/norov/linux:
  usercopy: Don't use "proxy" headers
  bitops: Move aligned_byte_mask() to wordpart.h
  MAINTAINERS: add BITOPS API record
  bitmap: relax find_nth_bit() limitation on return value
  lib: make test_bitops compilable into the kernel image
  bitops: Optimize fns() for improved performance
  lib/test_bitops: Add benchmark test for fns()
  Compiler Attributes: Add __always_used macro
  sched/topology: Optimize topology_span_sane()
  cpumask: Add for_each_cpu_from()
2024-05-21 15:29:01 -07:00
Linus Torvalds
3413efa888 Compactifying bdev flags
We can easily have up to 24 flags with sane
 atomicity, _without_ pushing anything out
 of the first cacheline of struct block_device.
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Merge tag 'pull-bd_flags-2' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs

Pull bdev flags update from Al Viro:
 "Compactifying bdev flags.

  We can easily have up to 24 flags with sane atomicity, _without_
  pushing anything out of the first cacheline of struct block_device"

* tag 'pull-bd_flags-2' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs:
  bdev: move ->bd_make_it_fail to ->__bd_flags
  bdev: move ->bd_ro_warned to ->__bd_flags
  bdev: move ->bd_has_subit_bio to ->__bd_flags
  bdev: move ->bd_write_holder into ->__bd_flags
  bdev: move ->bd_read_only to ->__bd_flags
  bdev: infrastructure for flags
  wrapper for access to ->bd_partno
  Use bdev_is_paritition() instead of open-coding it
2024-05-21 13:02:56 -07:00
Andy Shevchenko
5671dca241 usercopy: Don't use "proxy" headers
Update header inclusions to follow IWYU (Include What You Use)
principle.

Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
Signed-off-by: Yury Norov <yury.norov@gmail.com>
2024-05-19 16:12:38 -07:00
Andy Shevchenko
9f2c2d6ba1 bitops: Move aligned_byte_mask() to wordpart.h
The bitops.h is for bit related operations. The aligned_byte_mask()
is about byte (or part of the machine word) operations, for which
we have a separate header, move the mentioned macro to wordpart.h
to consolidate similar operations.

Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
Signed-off-by: Yury Norov <yury.norov@gmail.com>
2024-05-19 16:12:38 -07:00
Dave Chinner
70c435ca8d stackdepot: use gfp_nested_mask() instead of open coded masking
The stackdepot code is used by KASAN and lockdep for recoding stack
traces.  Both of these track allocation context information, and so their
internal allocations must obey the caller allocation contexts to avoid
generating their own false positive warnings that have nothing to do with
the code they are instrumenting/tracking.

We also don't want recording stack traces to deplete emergency memory
reserves - debug code is useless if it creates new issues that can't be
replicated when the debug code is disabled.

Switch the stackdepot allocation masking to use gfp_nested_mask() to
address these issues.  gfp_nested_mask() also strips GFP_ZONEMASK
naturally, so that greatly simplifies this code.

Link: https://lkml.kernel.org/r/20240430054604.4169568-3-david@fromorbit.com
Signed-off-by: Dave Chinner <dchinner@redhat.com>
Reviewed-by: Marco Elver <elver@google.com>
Reviewed-by: Christoph Hellwig <hch@lst.de>
Reviewed-by: Vlastimil Babka <vbabka@suse.cz>
Reviewed-by: Oscar Salvador <osalvador@suse.de>
Cc: Andrey Konovalov <andreyknvl@gmail.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
2024-05-19 14:40:44 -07:00
Samuel Holland
790a4a3dd1 selftests/fpu: allow building on other architectures
Now that ARCH_HAS_KERNEL_FPU_SUPPORT provides a common way to compile and
run floating-point code, this test is no longer x86-specific.

Link: https://lkml.kernel.org/r/20240329072441.591471-16-samuel.holland@sifive.com
Signed-off-by: Samuel Holland <samuel.holland@sifive.com>
Reviewed-by: Christoph Hellwig <hch@lst.de>
Acked-by: Christian König <christian.koenig@amd.com> 
Cc: Alex Deucher <alexander.deucher@amd.com>
Cc: Borislav Petkov (AMD) <bp@alien8.de>
Cc: Catalin Marinas <catalin.marinas@arm.com>
Cc: Dave Hansen <dave.hansen@linux.intel.com>
Cc: Huacai Chen <chenhuacai@kernel.org>
Cc: Ingo Molnar <mingo@redhat.com>
Cc: Jonathan Corbet <corbet@lwn.net>
Cc: Masahiro Yamada <masahiroy@kernel.org>
Cc: Michael Ellerman <mpe@ellerman.id.au>
Cc: Nathan Chancellor <nathan@kernel.org>
Cc: Nicolas Schier <nicolas@fjasle.eu>
Cc: Palmer Dabbelt <palmer@rivosinc.com>
Cc: Russell King <linux@armlinux.org.uk>
Cc: Thomas Gleixner <tglx@linutronix.de>
Cc: WANG Xuerui <git@xen0n.name>
Cc: Will Deacon <will@kernel.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
2024-05-19 14:36:20 -07:00
Samuel Holland
9613736d85 selftests/fpu: move FP code to a separate translation unit
This ensures no compiler-generated floating-point code can appear outside
kernel_fpu_{begin,end}() sections, and some architectures enforce this
separation.

Link: https://lkml.kernel.org/r/20240329072441.591471-15-samuel.holland@sifive.com
Signed-off-by: Samuel Holland <samuel.holland@sifive.com>
Reviewed-by: Christoph Hellwig <hch@lst.de>
Acked-by: Christian König <christian.koenig@amd.com> 
Cc: Alex Deucher <alexander.deucher@amd.com>
Cc: Borislav Petkov (AMD) <bp@alien8.de>
Cc: Catalin Marinas <catalin.marinas@arm.com>
Cc: Dave Hansen <dave.hansen@linux.intel.com>
Cc: Huacai Chen <chenhuacai@kernel.org>
Cc: Ingo Molnar <mingo@redhat.com>
Cc: Jonathan Corbet <corbet@lwn.net>
Cc: Masahiro Yamada <masahiroy@kernel.org>
Cc: Michael Ellerman <mpe@ellerman.id.au>
Cc: Nathan Chancellor <nathan@kernel.org>
Cc: Nicolas Schier <nicolas@fjasle.eu>
Cc: Palmer Dabbelt <palmer@rivosinc.com>
Cc: Russell King <linux@armlinux.org.uk>
Cc: Thomas Gleixner <tglx@linutronix.de>
Cc: WANG Xuerui <git@xen0n.name>
Cc: Will Deacon <will@kernel.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
2024-05-19 14:36:20 -07:00
Samuel Holland
4be073931c lib/raid6: use CC_FLAGS_FPU for NEON CFLAGS
Now that CC_FLAGS_FPU is exported and can be used anywhere in the source
tree, use it instead of duplicating the flags here.

Link: https://lkml.kernel.org/r/20240329072441.591471-7-samuel.holland@sifive.com
Signed-off-by: Samuel Holland <samuel.holland@sifive.com>
Reviewed-by: Christoph Hellwig <hch@lst.de>
Acked-by: Christian König <christian.koenig@amd.com> 
Cc: Alex Deucher <alexander.deucher@amd.com>
Cc: Borislav Petkov (AMD) <bp@alien8.de>
Cc: Catalin Marinas <catalin.marinas@arm.com>
Cc: Dave Hansen <dave.hansen@linux.intel.com>
Cc: Huacai Chen <chenhuacai@kernel.org>
Cc: Ingo Molnar <mingo@redhat.com>
Cc: Jonathan Corbet <corbet@lwn.net>
Cc: Masahiro Yamada <masahiroy@kernel.org>
Cc: Michael Ellerman <mpe@ellerman.id.au>
Cc: Nathan Chancellor <nathan@kernel.org>
Cc: Nicolas Schier <nicolas@fjasle.eu>
Cc: Palmer Dabbelt <palmer@rivosinc.com>
Cc: Russell King <linux@armlinux.org.uk>
Cc: Thomas Gleixner <tglx@linutronix.de>
Cc: WANG Xuerui <git@xen0n.name>
Cc: Will Deacon <will@kernel.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
2024-05-19 14:36:18 -07:00
Linus Torvalds
eb6a9339ef Mainly singleton patches, documented in their respective changelogs.
Notable series include:
 
 - Some maintenance and performance work for ocfs2 in Heming Zhao's
   series "improve write IO performance when fragmentation is high".
 
 - Some ocfs2 bugfixes from Su Yue in the series "ocfs2 bugs fixes
   exposed by fstests".
 
 - kfifo header rework from Andy Shevchenko in the series "kfifo: Clean
   up kfifo.h".
 
 - GDB script fixes from Florian Rommel in the series "scripts/gdb: Fixes
   for $lx_current and $lx_per_cpu".
 
 - After much discussion, a coding-style update from Barry Song
   explaining one reason why inline functions are preferred over macros.
   The series is "codingstyle: avoid unused parameters for a function-like
   macro".
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Merge tag 'mm-nonmm-stable-2024-05-19-11-56' of git://git.kernel.org/pub/scm/linux/kernel/git/akpm/mm

Pull non-mm updates from Andrew Morton:
 "Mainly singleton patches, documented in their respective changelogs.
  Notable series include:

   - Some maintenance and performance work for ocfs2 in Heming Zhao's
     series "improve write IO performance when fragmentation is high".

   - Some ocfs2 bugfixes from Su Yue in the series "ocfs2 bugs fixes
     exposed by fstests".

   - kfifo header rework from Andy Shevchenko in the series "kfifo:
     Clean up kfifo.h".

   - GDB script fixes from Florian Rommel in the series "scripts/gdb:
     Fixes for $lx_current and $lx_per_cpu".

   - After much discussion, a coding-style update from Barry Song
     explaining one reason why inline functions are preferred over
     macros. The series is "codingstyle: avoid unused parameters for a
     function-like macro""

* tag 'mm-nonmm-stable-2024-05-19-11-56' of git://git.kernel.org/pub/scm/linux/kernel/git/akpm/mm: (62 commits)
  fs/proc: fix softlockup in __read_vmcore
  nilfs2: convert BUG_ON() in nilfs_finish_roll_forward() to WARN_ON()
  scripts: checkpatch: check unused parameters for function-like macro
  Documentation: coding-style: ask function-like macros to evaluate parameters
  nilfs2: use __field_struct() for a bitwise field
  selftests/kcmp: remove unused open mode
  nilfs2: remove calls to folio_set_error() and folio_clear_error()
  kernel/watchdog_perf.c: tidy up kerneldoc
  watchdog: allow nmi watchdog to use raw perf event
  watchdog: handle comma separated nmi_watchdog command line
  nilfs2: make superblock data array index computation sparse friendly
  squashfs: remove calls to set the folio error flag
  squashfs: convert squashfs_symlink_read_folio to use folio APIs
  scripts/gdb: fix detection of current CPU in KGDB
  scripts/gdb: make get_thread_info accept pointers
  scripts/gdb: fix parameter handling in $lx_per_cpu
  scripts/gdb: fix failing KGDB detection during probe
  kfifo: don't use "proxy" headers
  media: stih-cec: add missing io.h
  media: rc: add missing io.h
  ...
2024-05-19 14:02:03 -07:00
Linus Torvalds
16dbfae867 bcachefs changes for 6.10-rc1
- More safety fixes, primarily found by syzbot
 
 - Run the upgrade/downgrade paths in nochnages mode. Nochanges mode is
   primarily for testing fsck/recovery in dry run mode, so it shouldn't
   change anything besides disabling writes and holding dirty metadata in
   memory.
 
   The idea here was to reduce the amount of activity if we can't write
   anything out, so that bringing up a filesystem in "super ro" mode
   would be more lilkely to work for data recovery - but norecovery is
   the correct option for this.
 
 - btree_trans->locked; we now track whether a btree_trans has any btree
   nodes locked, and this is used for improved assertions related to
   trans_unlock() and trans_relock(). We'll also be using it for
   improving how we work with lockdep in the future: we don't want
   lockdep to be tracking individual btree node locks because we take too
   many for lockdep to track, and it's not necessary since we have a
   cycle detector.
 
 - Trigger improvements that are prep work for online fsck
 
 - BTREE_TRIGGER_check_repair; this regularizes how we do some repair
   work for extents that goes with running triggers in fsck, and fixes
   some subtle issues with transaction restarts there.
 
 - bch2_snapshot_equiv() has now been ripped out of fsck.c; snapshot
   equivalence classes are for when snapshot deletion leaves behind
   redundant snapshot nodes, but snapshot deletion now cleans this up
   right away, so the abstraction doesn't need to leak.
 
 - Improvements to how we resume writing to the journal in recovery. The
   code for picking the new place to write when reading the journal is
   greatly simplified and we also store the position in the superblock
   for when we don't read the journal; this means that we preserve more
   of the journal for list_journal debugging.
 
 - Improvements to sysfs btree_cache and btree_node_cache, for debugging
   memory reclaim.
 
 - We now detect when we've blocked for 10 seconds on the allocator in
   the write path and dump some useful info.
 
 - Safety fixes for devices references: this is a big series that changes
   almost all device lookups to properly check if the device exists and
   take a reference to it.
 
   Previously we assumed that if a bkey exists that references a device
   then the device must exist, and this was enforced in .invalid methods,
   but this was incorrect because it meant device removal relied on
   accounting being correct to not leave keys pointing to invalid
   devices, and that's not something we can assume.
 
   Getting the "pointer to invalid device" checks out of our .invalid()
   methods fixes some long standing device removal bugs; the only
   outstanding bug with device removal now is a race between the discard
   path and deleting alloc info, which should be easily fixed.
 
 - The allocator now prefers not to expand the new
   member_info.btree_allocated bitmap, meaning if repair ever requires
   scanning for btree nodes (because of a corrupt interior nodes) we
   won't have to scan the whole device(s).
 
 - New coding style document, which among other things talks about the
   correct usage of assertions
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Merge tag 'bcachefs-2024-05-19' of https://evilpiepirate.org/git/bcachefs

Pull bcachefs updates from Kent Overstreet:

 - More safety fixes, primarily found by syzbot

 - Run the upgrade/downgrade paths in nochnages mode. Nochanges mode is
   primarily for testing fsck/recovery in dry run mode, so it shouldn't
   change anything besides disabling writes and holding dirty metadata
   in memory.

   The idea here was to reduce the amount of activity if we can't write
   anything out, so that bringing up a filesystem in "super ro" mode
   would be more lilkely to work for data recovery - but norecovery is
   the correct option for this.

 - btree_trans->locked; we now track whether a btree_trans has any btree
   nodes locked, and this is used for improved assertions related to
   trans_unlock() and trans_relock(). We'll also be using it for
   improving how we work with lockdep in the future: we don't want
   lockdep to be tracking individual btree node locks because we take
   too many for lockdep to track, and it's not necessary since we have a
   cycle detector.

 - Trigger improvements that are prep work for online fsck

 - BTREE_TRIGGER_check_repair; this regularizes how we do some repair
   work for extents that goes with running triggers in fsck, and fixes
   some subtle issues with transaction restarts there.

 - bch2_snapshot_equiv() has now been ripped out of fsck.c; snapshot
   equivalence classes are for when snapshot deletion leaves behind
   redundant snapshot nodes, but snapshot deletion now cleans this up
   right away, so the abstraction doesn't need to leak.

 - Improvements to how we resume writing to the journal in recovery. The
   code for picking the new place to write when reading the journal is
   greatly simplified and we also store the position in the superblock
   for when we don't read the journal; this means that we preserve more
   of the journal for list_journal debugging.

 - Improvements to sysfs btree_cache and btree_node_cache, for debugging
   memory reclaim.

 - We now detect when we've blocked for 10 seconds on the allocator in
   the write path and dump some useful info.

 - Safety fixes for devices references: this is a big series that
   changes almost all device lookups to properly check if the device
   exists and take a reference to it.

   Previously we assumed that if a bkey exists that references a device
   then the device must exist, and this was enforced in .invalid
   methods, but this was incorrect because it meant device removal
   relied on accounting being correct to not leave keys pointing to
   invalid devices, and that's not something we can assume.

   Getting the "pointer to invalid device" checks out of our .invalid()
   methods fixes some long standing device removal bugs; the only
   outstanding bug with device removal now is a race between the discard
   path and deleting alloc info, which should be easily fixed.

 - The allocator now prefers not to expand the new
   member_info.btree_allocated bitmap, meaning if repair ever requires
   scanning for btree nodes (because of a corrupt interior nodes) we
   won't have to scan the whole device(s).

 - New coding style document, which among other things talks about the
   correct usage of assertions

* tag 'bcachefs-2024-05-19' of https://evilpiepirate.org/git/bcachefs: (155 commits)
  bcachefs: add no_invalid_checks flag
  bcachefs: add counters for failed shrinker reclaim
  bcachefs: Fix sb_field_downgrade validation
  bcachefs: Plumb bch_validate_flags to sb_field_ops.validate()
  bcachefs: s/bkey_invalid_flags/bch_validate_flags
  bcachefs: fsync() should not return -EROFS
  bcachefs: Invalid devices are now checked for by fsck, not .invalid methods
  bcachefs: kill bch2_dev_bkey_exists() in bch2_check_fix_ptrs()
  bcachefs: kill bch2_dev_bkey_exists() in bch2_read_endio()
  bcachefs: bch2_dev_get_ioref() checks for device not present
  bcachefs: bch2_dev_get_ioref2(); io_read.c
  bcachefs: bch2_dev_get_ioref2(); debug.c
  bcachefs: bch2_dev_get_ioref2(); journal_io.c
  bcachefs: bch2_dev_get_ioref2(); io_write.c
  bcachefs: bch2_dev_get_ioref2(); btree_io.c
  bcachefs: bch2_dev_get_ioref2(); backpointers.c
  bcachefs: bch2_dev_get_ioref2(); alloc_background.c
  bcachefs: for_each_bset() declares loop iter
  bcachefs: Move BCACHEFS_STATFS_MAGIC value to UAPI magic.h
  bcachefs: Improve sysfs internal/btree_cache
  ...
2024-05-19 13:45:48 -07:00
Linus Torvalds
61307b7be4 The usual shower of singleton fixes and minor series all over MM,
documented (hopefully adequately) in the respective changelogs.  Notable
 series include:
 
 - Lucas Stach has provided some page-mapping
   cleanup/consolidation/maintainability work in the series "mm/treewide:
   Remove pXd_huge() API".
 
 - In the series "Allow migrate on protnone reference with
   MPOL_PREFERRED_MANY policy", Donet Tom has optimized mempolicy's
   MPOL_PREFERRED_MANY mode, yielding almost doubled performance in one
   test.
 
 - In their series "Memory allocation profiling" Kent Overstreet and
   Suren Baghdasaryan have contributed a means of determining (via
   /proc/allocinfo) whereabouts in the kernel memory is being allocated:
   number of calls and amount of memory.
 
 - Matthew Wilcox has provided the series "Various significant MM
   patches" which does a number of rather unrelated things, but in largely
   similar code sites.
 
 - In his series "mm: page_alloc: freelist migratetype hygiene" Johannes
   Weiner has fixed the page allocator's handling of migratetype requests,
   with resulting improvements in compaction efficiency.
 
 - In the series "make the hugetlb migration strategy consistent" Baolin
   Wang has fixed a hugetlb migration issue, which should improve hugetlb
   allocation reliability.
 
 - Liu Shixin has hit an I/O meltdown caused by readahead in a
   memory-tight memcg.  Addressed in the series "Fix I/O high when memory
   almost met memcg limit".
 
 - In the series "mm/filemap: optimize folio adding and splitting" Kairui
   Song has optimized pagecache insertion, yielding ~10% performance
   improvement in one test.
 
 - Baoquan He has cleaned up and consolidated the early zone
   initialization code in the series "mm/mm_init.c: refactor
   free_area_init_core()".
 
 - Baoquan has also redone some MM initializatio code in the series
   "mm/init: minor clean up and improvement".
 
 - MM helper cleanups from Christoph Hellwig in his series "remove
   follow_pfn".
 
 - More cleanups from Matthew Wilcox in the series "Various page->flags
   cleanups".
 
 - Vlastimil Babka has contributed maintainability improvements in the
   series "memcg_kmem hooks refactoring".
 
 - More folio conversions and cleanups in Matthew Wilcox's series
 
 	"Convert huge_zero_page to huge_zero_folio"
 	"khugepaged folio conversions"
 	"Remove page_idle and page_young wrappers"
 	"Use folio APIs in procfs"
 	"Clean up __folio_put()"
 	"Some cleanups for memory-failure"
 	"Remove page_mapping()"
 	"More folio compat code removal"
 
 - David Hildenbrand chipped in with "fs/proc/task_mmu: convert hugetlb
   functions to work on folis".
 
 - Code consolidation and cleanup work related to GUP's handling of
   hugetlbs in Peter Xu's series "mm/gup: Unify hugetlb, part 2".
 
 - Rick Edgecombe has developed some fixes to stack guard gaps in the
   series "Cover a guard gap corner case".
 
 - Jinjiang Tu has fixed KSM's behaviour after a fork+exec in the series
   "mm/ksm: fix ksm exec support for prctl".
 
 - Baolin Wang has implemented NUMA balancing for multi-size THPs.  This
   is a simple first-cut implementation for now.  The series is "support
   multi-size THP numa balancing".
 
 - Cleanups to vma handling helper functions from Matthew Wilcox in the
   series "Unify vma_address and vma_pgoff_address".
 
 - Some selftests maintenance work from Dev Jain in the series
   "selftests/mm: mremap_test: Optimizations and style fixes".
 
 - Improvements to the swapping of multi-size THPs from Ryan Roberts in
   the series "Swap-out mTHP without splitting".
 
 - Kefeng Wang has significantly optimized the handling of arm64's
   permission page faults in the series
 
 	"arch/mm/fault: accelerate pagefault when badaccess"
 	"mm: remove arch's private VM_FAULT_BADMAP/BADACCESS"
 
 - GUP cleanups from David Hildenbrand in "mm/gup: consistently call it
   GUP-fast".
 
 - hugetlb fault code cleanups from Vishal Moola in "Hugetlb fault path to
   use struct vm_fault".
 
 - selftests build fixes from John Hubbard in the series "Fix
   selftests/mm build without requiring "make headers"".
 
 - Memory tiering fixes/improvements from Ho-Ren (Jack) Chuang in the
   series "Improved Memory Tier Creation for CPUless NUMA Nodes".  Fixes
   the initialization code so that migration between different memory types
   works as intended.
 
 - David Hildenbrand has improved follow_pte() and fixed an errant driver
   in the series "mm: follow_pte() improvements and acrn follow_pte()
   fixes".
 
 - David also did some cleanup work on large folio mapcounts in his
   series "mm: mapcount for large folios + page_mapcount() cleanups".
 
 - Folio conversions in KSM in Alex Shi's series "transfer page to folio
   in KSM".
 
 - Barry Song has added some sysfs stats for monitoring multi-size THP's
   in the series "mm: add per-order mTHP alloc and swpout counters".
 
 - Some zswap cleanups from Yosry Ahmed in the series "zswap same-filled
   and limit checking cleanups".
 
 - Matthew Wilcox has been looking at buffer_head code and found the
   documentation to be lacking.  The series is "Improve buffer head
   documentation".
 
 - Multi-size THPs get more work, this time from Lance Yang.  His series
   "mm/madvise: enhance lazyfreeing with mTHP in madvise_free" optimizes
   the freeing of these things.
 
 - Kemeng Shi has added more userspace-visible writeback instrumentation
   in the series "Improve visibility of writeback".
 
 - Kemeng Shi then sent some maintenance work on top in the series "Fix
   and cleanups to page-writeback".
 
 - Matthew Wilcox reduces mmap_lock traffic in the anon vma code in the
   series "Improve anon_vma scalability for anon VMAs".  Intel's test bot
   reported an improbable 3x improvement in one test.
 
 - SeongJae Park adds some DAMON feature work in the series
 
 	"mm/damon: add a DAMOS filter type for page granularity access recheck"
 	"selftests/damon: add DAMOS quota goal test"
 
 - Also some maintenance work in the series
 
 	"mm/damon/paddr: simplify page level access re-check for pageout"
 	"mm/damon: misc fixes and improvements"
 
 - David Hildenbrand has disabled some known-to-fail selftests ni the
   series "selftests: mm: cow: flag vmsplice() hugetlb tests as XFAIL".
 
 - memcg metadata storage optimizations from Shakeel Butt in "memcg:
   reduce memory consumption by memcg stats".
 
 - DAX fixes and maintenance work from Vishal Verma in the series
   "dax/bus.c: Fixups for dax-bus locking".
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Merge tag 'mm-stable-2024-05-17-19-19' of git://git.kernel.org/pub/scm/linux/kernel/git/akpm/mm

Pull mm updates from Andrew Morton:
 "The usual shower of singleton fixes and minor series all over MM,
  documented (hopefully adequately) in the respective changelogs.
  Notable series include:

   - Lucas Stach has provided some page-mapping cleanup/consolidation/
     maintainability work in the series "mm/treewide: Remove pXd_huge()
     API".

   - In the series "Allow migrate on protnone reference with
     MPOL_PREFERRED_MANY policy", Donet Tom has optimized mempolicy's
     MPOL_PREFERRED_MANY mode, yielding almost doubled performance in
     one test.

   - In their series "Memory allocation profiling" Kent Overstreet and
     Suren Baghdasaryan have contributed a means of determining (via
     /proc/allocinfo) whereabouts in the kernel memory is being
     allocated: number of calls and amount of memory.

   - Matthew Wilcox has provided the series "Various significant MM
     patches" which does a number of rather unrelated things, but in
     largely similar code sites.

   - In his series "mm: page_alloc: freelist migratetype hygiene"
     Johannes Weiner has fixed the page allocator's handling of
     migratetype requests, with resulting improvements in compaction
     efficiency.

   - In the series "make the hugetlb migration strategy consistent"
     Baolin Wang has fixed a hugetlb migration issue, which should
     improve hugetlb allocation reliability.

   - Liu Shixin has hit an I/O meltdown caused by readahead in a
     memory-tight memcg. Addressed in the series "Fix I/O high when
     memory almost met memcg limit".

   - In the series "mm/filemap: optimize folio adding and splitting"
     Kairui Song has optimized pagecache insertion, yielding ~10%
     performance improvement in one test.

   - Baoquan He has cleaned up and consolidated the early zone
     initialization code in the series "mm/mm_init.c: refactor
     free_area_init_core()".

   - Baoquan has also redone some MM initializatio code in the series
     "mm/init: minor clean up and improvement".

   - MM helper cleanups from Christoph Hellwig in his series "remove
     follow_pfn".

   - More cleanups from Matthew Wilcox in the series "Various
     page->flags cleanups".

   - Vlastimil Babka has contributed maintainability improvements in the
     series "memcg_kmem hooks refactoring".

   - More folio conversions and cleanups in Matthew Wilcox's series:
	"Convert huge_zero_page to huge_zero_folio"
	"khugepaged folio conversions"
	"Remove page_idle and page_young wrappers"
	"Use folio APIs in procfs"
	"Clean up __folio_put()"
	"Some cleanups for memory-failure"
	"Remove page_mapping()"
	"More folio compat code removal"

   - David Hildenbrand chipped in with "fs/proc/task_mmu: convert
     hugetlb functions to work on folis".

   - Code consolidation and cleanup work related to GUP's handling of
     hugetlbs in Peter Xu's series "mm/gup: Unify hugetlb, part 2".

   - Rick Edgecombe has developed some fixes to stack guard gaps in the
     series "Cover a guard gap corner case".

   - Jinjiang Tu has fixed KSM's behaviour after a fork+exec in the
     series "mm/ksm: fix ksm exec support for prctl".

   - Baolin Wang has implemented NUMA balancing for multi-size THPs.
     This is a simple first-cut implementation for now. The series is
     "support multi-size THP numa balancing".

   - Cleanups to vma handling helper functions from Matthew Wilcox in
     the series "Unify vma_address and vma_pgoff_address".

   - Some selftests maintenance work from Dev Jain in the series
     "selftests/mm: mremap_test: Optimizations and style fixes".

   - Improvements to the swapping of multi-size THPs from Ryan Roberts
     in the series "Swap-out mTHP without splitting".

   - Kefeng Wang has significantly optimized the handling of arm64's
     permission page faults in the series
	"arch/mm/fault: accelerate pagefault when badaccess"
	"mm: remove arch's private VM_FAULT_BADMAP/BADACCESS"

   - GUP cleanups from David Hildenbrand in "mm/gup: consistently call
     it GUP-fast".

   - hugetlb fault code cleanups from Vishal Moola in "Hugetlb fault
     path to use struct vm_fault".

   - selftests build fixes from John Hubbard in the series "Fix
     selftests/mm build without requiring "make headers"".

   - Memory tiering fixes/improvements from Ho-Ren (Jack) Chuang in the
     series "Improved Memory Tier Creation for CPUless NUMA Nodes".
     Fixes the initialization code so that migration between different
     memory types works as intended.

   - David Hildenbrand has improved follow_pte() and fixed an errant
     driver in the series "mm: follow_pte() improvements and acrn
     follow_pte() fixes".

   - David also did some cleanup work on large folio mapcounts in his
     series "mm: mapcount for large folios + page_mapcount() cleanups".

   - Folio conversions in KSM in Alex Shi's series "transfer page to
     folio in KSM".

   - Barry Song has added some sysfs stats for monitoring multi-size
     THP's in the series "mm: add per-order mTHP alloc and swpout
     counters".

   - Some zswap cleanups from Yosry Ahmed in the series "zswap
     same-filled and limit checking cleanups".

   - Matthew Wilcox has been looking at buffer_head code and found the
     documentation to be lacking. The series is "Improve buffer head
     documentation".

   - Multi-size THPs get more work, this time from Lance Yang. His
     series "mm/madvise: enhance lazyfreeing with mTHP in madvise_free"
     optimizes the freeing of these things.

   - Kemeng Shi has added more userspace-visible writeback
     instrumentation in the series "Improve visibility of writeback".

   - Kemeng Shi then sent some maintenance work on top in the series
     "Fix and cleanups to page-writeback".

   - Matthew Wilcox reduces mmap_lock traffic in the anon vma code in
     the series "Improve anon_vma scalability for anon VMAs". Intel's
     test bot reported an improbable 3x improvement in one test.

   - SeongJae Park adds some DAMON feature work in the series
	"mm/damon: add a DAMOS filter type for page granularity access recheck"
	"selftests/damon: add DAMOS quota goal test"

   - Also some maintenance work in the series
	"mm/damon/paddr: simplify page level access re-check for pageout"
	"mm/damon: misc fixes and improvements"

   - David Hildenbrand has disabled some known-to-fail selftests ni the
     series "selftests: mm: cow: flag vmsplice() hugetlb tests as
     XFAIL".

   - memcg metadata storage optimizations from Shakeel Butt in "memcg:
     reduce memory consumption by memcg stats".

   - DAX fixes and maintenance work from Vishal Verma in the series
     "dax/bus.c: Fixups for dax-bus locking""

* tag 'mm-stable-2024-05-17-19-19' of git://git.kernel.org/pub/scm/linux/kernel/git/akpm/mm: (426 commits)
  memcg, oom: cleanup unused memcg_oom_gfp_mask and memcg_oom_order
  selftests/mm: hugetlb_madv_vs_map: avoid test skipping by querying hugepage size at runtime
  mm/hugetlb: add missing VM_FAULT_SET_HINDEX in hugetlb_wp
  mm/hugetlb: add missing VM_FAULT_SET_HINDEX in hugetlb_fault
  selftests: cgroup: add tests to verify the zswap writeback path
  mm: memcg: make alloc_mem_cgroup_per_node_info() return bool
  mm/damon/core: fix return value from damos_wmark_metric_value
  mm: do not update memcg stats for NR_{FILE/SHMEM}_PMDMAPPED
  selftests: cgroup: remove redundant enabling of memory controller
  Docs/mm/damon/maintainer-profile: allow posting patches based on damon/next tree
  Docs/mm/damon/maintainer-profile: change the maintainer's timezone from PST to PT
  Docs/mm/damon/design: use a list for supported filters
  Docs/admin-guide/mm/damon/usage: fix wrong schemes effective quota update command
  Docs/admin-guide/mm/damon/usage: fix wrong example of DAMOS filter matching sysfs file
  selftests/damon: classify tests for functionalities and regressions
  selftests/damon/_damon_sysfs: use 'is' instead of '==' for 'None'
  selftests/damon/_damon_sysfs: find sysfs mount point from /proc/mounts
  selftests/damon/_damon_sysfs: check errors from nr_schemes file reads
  mm/damon/core: initialize ->esz_bp from damos_quota_init_priv()
  selftests/damon: add a test for DAMOS quota goal
  ...
2024-05-19 09:21:03 -07:00
Kees Cook
ae1a863bcd kunit/fortify: Fix memcmp() test to be amplitude agnostic
When memcmp() returns a non-zero value, only the signed bit has any
meaning. The actual value may differ between implementations.

Reported-by: Nathan Chancellor <nathan@kernel.org>
Closes: https://github.com/ClangBuiltLinux/linux/issues/2025
Tested-by: Nathan Chancellor <nathan@kernel.org>
Link: https://lore.kernel.org/r/20240518184020.work.604-kees@kernel.org
Signed-off-by: Kees Cook <keescook@chromium.org>
2024-05-18 13:46:10 -07:00
Kees Cook
890a64810d ubsan: Restore dependency on ARCH_HAS_UBSAN
While removing CONFIG_UBSAN_SANITIZE_ALL, ARCH_HAS_UBSAN wasn't correctly
depended on. Restore this, as we do not want to attempt UBSAN builds
unless it's actually been tested on a given architecture.

Reported-by: Masahiro Yamada <masahiroy@kernel.org>
Closes: https://lore.kernel.org/all/20240514095427.541201-1-masahiroy@kernel.org
Fixes: 918327e9b7 ("ubsan: Remove CONFIG_UBSAN_SANITIZE_ALL")
Link: https://lore.kernel.org/r/20240514233747.work.441-kees@kernel.org
Signed-off-by: Kees Cook <keescook@chromium.org>
2024-05-18 13:46:10 -07:00
Linus Torvalds
25f4874662 RDMA v6.10 merge window
Normal set of driver updates and small fixes:
 
 - Small improvements and fixes for erdma, efa, hfi1, bnxt_re
 
 - Fix a UAF crash after module unload on leaking restrack entry
 
 - Continue adding full RDMA support in mana with support for EQs, GID's
   and CQs
 
 - Improvements to the mkey cache in mlx5
 
 - DSCP traffic class support in hns and several bug fixes
 
 - Cap the maximum number of MADs in the receive queue to avoid OOM
 
 - Another batch of rxe bug fixes from large scale testing
 
 - __iowrite64_copy() optimizations for write combining MMIO memory
 
 - Remove NULL checks before dev_put/hold()
 
 - EFA support for receive with immediate
 
 - Fix a recent memleaking regression in a cma error path
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Merge tag 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/rdma/rdma

Pull rdma updates from Jason Gunthorpe:
 "Aside from the usual things this has an arch update for
  __iowrite64_copy() used by the RDMA drivers.

  This API was intended to generate large 64 byte MemWr TLPs on PCI.
  These days most processors had done this by just repeating writel() in
  a loop. S390 and some new ARM64 designs require a special helper to
  get this to generate.

   - Small improvements and fixes for erdma, efa, hfi1, bnxt_re

   - Fix a UAF crash after module unload on leaking restrack entry

   - Continue adding full RDMA support in mana with support for EQs,
     GID's and CQs

   - Improvements to the mkey cache in mlx5

   - DSCP traffic class support in hns and several bug fixes

   - Cap the maximum number of MADs in the receive queue to avoid OOM

   - Another batch of rxe bug fixes from large scale testing

   - __iowrite64_copy() optimizations for write combining MMIO memory

   - Remove NULL checks before dev_put/hold()

   - EFA support for receive with immediate

   - Fix a recent memleaking regression in a cma error path"

* tag 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/rdma/rdma: (70 commits)
  RDMA/cma: Fix kmemleak in rdma_core observed during blktests nvme/rdma use siw
  RDMA/IPoIB: Fix format truncation compilation errors
  bnxt_re: avoid shift undefined behavior in bnxt_qplib_alloc_init_hwq
  RDMA/efa: Support QP with unsolicited write w/ imm. receive
  IB/hfi1: Remove generic .ndo_get_stats64
  IB/hfi1: Do not use custom stat allocator
  RDMA/hfi1: Use RMW accessors for changing LNKCTL2
  RDMA/mana_ib: implement uapi for creation of rnic cq
  RDMA/mana_ib: boundary check before installing cq callbacks
  RDMA/mana_ib: introduce a helper to remove cq callbacks
  RDMA/mana_ib: create and destroy RNIC cqs
  RDMA/mana_ib: create EQs for RNIC CQs
  RDMA/core: Remove NULL check before dev_{put, hold}
  RDMA/ipoib: Remove NULL check before dev_{put, hold}
  RDMA/mlx5: Remove NULL check before dev_{put, hold}
  RDMA/mlx5: Track DCT, DCI and REG_UMR QPs as diver_detail resources.
  RDMA/core: Add an option to display driver-specific QPs in the rdmatool
  RDMA/efa: Add shutdown notifier
  RDMA/mana_ib: Fix missing ret value
  IB/mlx5: Use __iowrite64_copy() for write combining stores
  ...
2024-05-18 13:04:15 -07:00
Linus Torvalds
ff9a79307f Kbuild updates for v6.10
- Avoid 'constexpr', which is a keyword in C23
 
  - Allow 'dtbs_check' and 'dt_compatible_check' run independently of
    'dt_binding_check'
 
  - Fix weak references to avoid GOT entries in position-independent
    code generation
 
  - Convert the last use of 'optional' property in arch/sh/Kconfig
 
  - Remove support for the 'optional' property in Kconfig
 
  - Remove support for Clang's ThinLTO caching, which does not work with
    the .incbin directive
 
  - Change the semantics of $(src) so it always points to the source
    directory, which fixes Makefile inconsistencies between upstream and
    downstream
 
  - Fix 'make tar-pkg' for RISC-V to produce a consistent package
 
  - Provide reasonable default coverage for objtool, sanitizers, and
    profilers
 
  - Remove redundant OBJECT_FILES_NON_STANDARD, KASAN_SANITIZE, etc.
 
  - Remove the last use of tristate choice in drivers/rapidio/Kconfig
 
  - Various cleanups and fixes in Kconfig
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Merge tag 'kbuild-v6.10' of git://git.kernel.org/pub/scm/linux/kernel/git/masahiroy/linux-kbuild

Pull Kbuild updates from Masahiro Yamada:

 - Avoid 'constexpr', which is a keyword in C23

 - Allow 'dtbs_check' and 'dt_compatible_check' run independently of
   'dt_binding_check'

 - Fix weak references to avoid GOT entries in position-independent code
   generation

 - Convert the last use of 'optional' property in arch/sh/Kconfig

 - Remove support for the 'optional' property in Kconfig

 - Remove support for Clang's ThinLTO caching, which does not work with
   the .incbin directive

 - Change the semantics of $(src) so it always points to the source
   directory, which fixes Makefile inconsistencies between upstream and
   downstream

 - Fix 'make tar-pkg' for RISC-V to produce a consistent package

 - Provide reasonable default coverage for objtool, sanitizers, and
   profilers

 - Remove redundant OBJECT_FILES_NON_STANDARD, KASAN_SANITIZE, etc.

 - Remove the last use of tristate choice in drivers/rapidio/Kconfig

 - Various cleanups and fixes in Kconfig

* tag 'kbuild-v6.10' of git://git.kernel.org/pub/scm/linux/kernel/git/masahiroy/linux-kbuild: (46 commits)
  kconfig: use sym_get_choice_menu() in sym_check_prop()
  rapidio: remove choice for enumeration
  kconfig: lxdialog: remove initialization with A_NORMAL
  kconfig: m/nconf: merge two item_add_str() calls
  kconfig: m/nconf: remove dead code to display value of bool choice
  kconfig: m/nconf: remove dead code to display children of choice members
  kconfig: gconf: show checkbox for choice correctly
  kbuild: use GCOV_PROFILE and KCSAN_SANITIZE in scripts/Makefile.modfinal
  Makefile: remove redundant tool coverage variables
  kbuild: provide reasonable defaults for tool coverage
  modules: Drop the .export_symbol section from the final modules
  kconfig: use menu_list_for_each_sym() in sym_check_choice_deps()
  kconfig: use sym_get_choice_menu() in conf_write_defconfig()
  kconfig: add sym_get_choice_menu() helper
  kconfig: turn defaults and additional prompt for choice members into error
  kconfig: turn missing prompt for choice members into error
  kconfig: turn conf_choice() into void function
  kconfig: use linked list in sym_set_changed()
  kconfig: gconf: use MENU_CHANGED instead of SYMBOL_CHANGED
  kconfig: gconf: remove debug code
  ...
2024-05-18 12:39:20 -07:00
Linus Torvalds
70a663205d Probes updates for v6.10:
- tracing/probes: Adding new pseudo-types %pd and %pD support for dumping
   dentry name from 'struct dentry *' and file name from 'struct file *'.
 
 - uprobes: Some performance optimizations have been done.
  . Speed up the BPF uprobe event by delaying the fetching of the uprobe
    event arguments that are not used in BPF.
  . Avoid locking by speculatively checking whether uprobe event is valid.
  . Reduce lock contention by using read/write_lock instead of spinlock for
    uprobe list operation. This improved BPF uprobe benchmark result 43% on
    average.
 
 - rethook: Removes non-fatal warning messages when tracing stack from BPF
   and skip rcu_is_watching() validation in rethook if possible.
 
 - objpool: Optimizing objpool (which is used by kretprobes and fprobe as
   rethook backend storage) by inlining functions and avoid caching nr_cpu_ids
   because it is a const value.
 
 - fprobe: Add entry/exit callbacks types (code cleanup)
 - kprobes: Check ftrace was killed in kprobes if it uses ftrace.
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Merge tag 'probes-v6.10' of git://git.kernel.org/pub/scm/linux/kernel/git/trace/linux-trace

Pull probes updates from Masami Hiramatsu:

 - tracing/probes: Add new pseudo-types %pd and %pD support for dumping
   dentry name from 'struct dentry *' and file name from 'struct file *'

 - uprobes performance optimizations:
    - Speed up the BPF uprobe event by delaying the fetching of the
      uprobe event arguments that are not used in BPF
    - Avoid locking by speculatively checking whether uprobe event is
      valid
    - Reduce lock contention by using read/write_lock instead of
      spinlock for uprobe list operation. This improved BPF uprobe
      benchmark result 43% on average

 - rethook: Remove non-fatal warning messages when tracing stack from
   BPF and skip rcu_is_watching() validation in rethook if possible

 - objpool: Optimize objpool (which is used by kretprobes and fprobe as
   rethook backend storage) by inlining functions and avoid caching
   nr_cpu_ids because it is a const value

 - fprobe: Add entry/exit callbacks types (code cleanup)

 - kprobes: Check ftrace was killed in kprobes if it uses ftrace

* tag 'probes-v6.10' of git://git.kernel.org/pub/scm/linux/kernel/git/trace/linux-trace:
  kprobe/ftrace: bail out if ftrace was killed
  selftests/ftrace: Fix required features for VFS type test case
  objpool: cache nr_possible_cpus() and avoid caching nr_cpu_ids
  objpool: enable inlining objpool_push() and objpool_pop() operations
  rethook: honor CONFIG_FTRACE_VALIDATE_RCU_IS_WATCHING in rethook_try_get()
  ftrace: make extra rcu_is_watching() validation check optional
  uprobes: reduce contention on uprobes_tree access
  rethook: Remove warning messages printed for finding return address of a frame.
  fprobe: Add entry/exit callbacks types
  selftests/ftrace: add fprobe test cases for VFS type "%pd" and "%pD"
  selftests/ftrace: add kprobe test cases for VFS type "%pd" and "%pD"
  Documentation: tracing: add new type '%pd' and '%pD' for kprobe
  tracing/probes: support '%pD' type for print struct file's name
  tracing/probes: support '%pd' type for print struct dentry's name
  uprobes: add speculative lockless system-wide uprobe filter check
  uprobes: prepare uprobe args buffer lazily
  uprobes: encapsulate preparation of uprobe args buffer
2024-05-17 18:29:30 -07:00
Linus Torvalds
1b294a1f35 Networking changes for 6.10.
Core & protocols
 ----------------
 
  - Complete rework of garbage collection of AF_UNIX sockets.
    AF_UNIX is prone to forming reference count cycles due to fd passing
    functionality. New method based on Tarjan's Strongly Connected Components
    algorithm should be both faster and remove a lot of workarounds
    we accumulated over the years.
 
  - Add TCP fraglist GRO support, allowing chaining multiple TCP packets
    and forwarding them together. Useful for small switches / routers which
    lack basic checksum offload in some scenarios (e.g. PPPoE).
 
  - Support using SMP threads for handling packet backlog i.e. packet
    processing from software interfaces and old drivers which don't
    use NAPI. This helps move the processing out of the softirq jumble.
 
  - Continue work of converting from rtnl lock to RCU protection.
    Don't require rtnl lock when reading: IPv6 routing FIB, IPv6 address
    labels, netdev threaded NAPI sysfs files, bonding driver's sysfs files,
    MPLS devconf, IPv4 FIB rules, netns IDs, tcp metrics, TC Qdiscs,
    neighbor entries, ARP entries via ioctl(SIOCGARP), a lot of the link
    information available via rtnetlink.
 
  - Small optimizations from Eric to UDP wake up handling, memory accounting,
    RPS/RFS implementation, TCP packet sizing etc.
 
  - Allow direct page recycling in the bulk API used by XDP, for +2% PPS.
 
  - Support peek with an offset on TCP sockets.
 
  - Add MPTCP APIs for querying last time packets were received/sent/acked,
    and whether MPTCP "upgrade" succeeded on a TCP socket.
 
  - Add intra-node communication shortcut to improve SMC performance.
 
  - Add IPv6 (and IPv{4,6}-over-IPv{4,6}) support to the GTP protocol driver.
 
  - Add HSR-SAN (RedBOX) mode of operation to the HSR protocol driver.
 
  - Add reset reasons for tracing what caused a TCP reset to be sent.
 
  - Introduce direction attribute for xfrm (IPSec) states.
    State can be used either for input or output packet processing.
 
 Things we sprinkled into general kernel code
 --------------------------------------------
 
  - Add bitmap_{read,write}(), bitmap_size(), expose BYTES_TO_BITS().
    This required touch-ups and renaming of a few existing users.
 
  - Add Endian-dependent __counted_by_{le,be} annotations.
 
  - Make building selftests "quieter" by printing summaries like
    "CC object.o" rather than full commands with all the arguments.
 
 Netfilter
 ---------
 
  - Use GFP_KERNEL to clone elements, to deal better with OOM situations
    and avoid failures in the .commit step.
 
 BPF
 ---
 
  - Add eBPF JIT for ARCv2 CPUs.
 
  - Support attaching kprobe BPF programs through kprobe_multi link in
    a session mode, meaning, a BPF program is attached to both function entry
    and return, the entry program can decide if the return program gets
    executed and the entry program can share u64 cookie value with return
    program. "Session mode" is a common use-case for tetragon and bpftrace.
 
  - Add the ability to specify and retrieve BPF cookie for raw tracepoint
    programs in order to ease migration from classic to raw tracepoints.
 
  - Add an internal-only BPF per-CPU instruction for resolving per-CPU
    memory addresses and implement support in x86, ARM64 and RISC-V JITs.
    This allows inlining functions which need to access per-CPU state.
 
  - Optimize x86 BPF JIT's emit_mov_imm64, and add support for various
    atomics in bpf_arena which can be JITed as a single x86 instruction.
    Support BPF arena on ARM64.
 
  - Add a new bpf_wq API for deferring events and refactor process-context
    bpf_timer code to keep common code where possible.
 
  - Harden the BPF verifier's and/or/xor value tracking.
 
  - Introduce crypto kfuncs to let BPF programs call kernel crypto APIs.
 
  - Support bpf_tail_call_static() helper for BPF programs with GCC 13.
 
  - Add bpf_preempt_{disable,enable}() kfuncs in order to allow a BPF
    program to have code sections where preemption is disabled.
 
 Driver API
 ----------
 
  - Skip software TC processing completely if all installed rules are
    marked as HW-only, instead of checking the HW-only flag rule by rule.
 
  - Add support for configuring PoE (Power over Ethernet), similar to
    the already existing support for PoDL (Power over Data Line) config.
 
  - Initial bits of a queue control API, for now allowing a single queue
    to be reset without disturbing packet flow to other queues.
 
  - Common (ethtool) statistics for hardware timestamping.
 
 Tests and tooling
 -----------------
 
  - Remove the need to create a config file to run the net forwarding tests
    so that a naive "make run_tests" can exercise them.
 
  - Define a method of writing tests which require an external endpoint
    to communicate with (to send/receive data towards the test machine).
    Add a few such tests.
 
  - Create a shared code library for writing Python tests. Expose the YAML
    Netlink library from tools/ to the tests for easy Netlink access.
 
  - Move netfilter tests under net/, extend them, separate performance tests
    from correctness tests, and iron out issues found by running them
    "on every commit".
 
  - Refactor BPF selftests to use common network helpers.
 
  - Further work filling in YAML definitions of Netlink messages for:
    nftables, team driver, bonding interfaces, vlan interfaces, VF info,
    TC u32 mark, TC police action.
 
  - Teach Python YAML Netlink to decode attribute policies.
 
  - Extend the definition of the "indexed array" construct in the specs
    to cover arrays of scalars rather than just nests.
 
  - Add hyperlinks between definitions in generated Netlink docs.
 
 Drivers
 -------
 
  - Make sure unsupported flower control flags are rejected by drivers,
    and make more drivers report errors directly to the application rather
    than dmesg (large number of driver changes from Asbjørn Sloth Tønnesen).
 
  - Ethernet high-speed NICs:
    - Broadcom (bnxt):
      - support multiple RSS contexts and steering traffic to them
      - support XDP metadata
      - make page pool allocations more NUMA aware
    - Intel (100G, ice, idpf):
      - extract datapath code common among Intel drivers into a library
      - use fewer resources in switchdev by sharing queues with the PF
      - add PFCP filter support
      - add Ethernet filter support
      - use a spinlock instead of HW lock in PTP clock ops
      - support 5 layer Tx scheduler topology
    - nVidia/Mellanox:
      - 800G link modes and 100G SerDes speeds
      - per-queue IRQ coalescing configuration
    - Marvell Octeon:
      - support offloading TC packet mark action
 
  - Ethernet NICs consumer, embedded and virtual:
    - stop lying about skb->truesize in USB Ethernet drivers, it messes up
      TCP memory calculations
    - Google cloud vNIC:
      - support changing ring size via ethtool
      - support ring reset using the queue control API
    - VirtIO net:
      - expose flow hash from RSS to XDP
      - per-queue statistics
      - add selftests
    - Synopsys (stmmac):
      - support controllers which require an RX clock signal from the MII
        bus to perform their hardware initialization
    - TI:
      - icssg_prueth: support ICSSG-based Ethernet on AM65x SR1.0 devices
      - icssg_prueth: add SW TX / RX Coalescing based on hrtimers
      - cpsw: minimal XDP support
    - Renesas (ravb):
      - support describing the MDIO bus
    - Realtek (r8169):
      - add support for RTL8168M
    - Microchip Sparx5:
      - matchall and flower actions mirred and redirect
 
  - Ethernet switches:
    - nVidia/Mellanox:
      - improve events processing performance
    - Marvell:
      - add support for MV88E6250 family internal PHYs
    - Microchip:
      - add DCB and DSCP mapping support for KSZ switches
      - vsc73xx: convert to PHYLINK
    - Realtek:
      - rtl8226b/rtl8221b: add C45 instances and SerDes switching
 
  - Many driver changes related to PHYLIB and PHYLINK deprecated API cleanup.
 
  - Ethernet PHYs:
    - Add a new driver for Airoha EN8811H 2.5 Gigabit PHY.
    - micrel: lan8814: add support for PPS out and external timestamp trigger
 
  - WiFi:
    - Disable Wireless Extensions (WEXT) in all Wi-Fi 7 devices drivers.
      Modern devices can only be configured using nl80211.
    - mac80211/cfg80211
      - handle color change per link for WiFi 7 Multi-Link Operation
    - Intel (iwlwifi):
      - don't support puncturing in 5 GHz
      - support monitor mode on passive channels
      - BZ-W device support
      - P2P with HE/EHT support
      - re-add support for firmware API 90
      - provide channel survey information for Automatic Channel Selection
    - MediaTek (mt76):
      - mt7921 LED control
      - mt7925 EHT radiotap support
      - mt7920e PCI support
    - Qualcomm (ath11k):
      - P2P support for QCA6390, WCN6855 and QCA2066
      - support hibernation
      - ieee80211-freq-limit Device Tree property support
    - Qualcomm (ath12k):
      - refactoring in preparation of multi-link support
      - suspend and hibernation support
      - ACPI support
      - debugfs support, including dfs_simulate_radar support
    - RealTek:
      - rtw88: RTL8723CS SDIO device support
      - rtw89: RTL8922AE Wi-Fi 7 PCI device support
      - rtw89: complete features of new WiFi 7 chip 8922AE including
        BT-coexistence and Wake-on-WLAN
      - rtw89: use BIOS ACPI settings to set TX power and channels
      - rtl8xxxu: enable Management Frame Protection (MFP) support
 
  - Bluetooth:
    - support for Intel BlazarI and Filmore Peak2 (BE201)
    - support for MediaTek MT7921S SDIO
    - initial support for Intel PCIe BT driver
    - remove HCI_AMP support
 
 Signed-off-by: Jakub Kicinski <kuba@kernel.org>
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Merge tag 'net-next-6.10' of git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net-next

Pull networking updates from Jakub Kicinski:
 "Core & protocols:

   - Complete rework of garbage collection of AF_UNIX sockets.

     AF_UNIX is prone to forming reference count cycles due to fd
     passing functionality. New method based on Tarjan's Strongly
     Connected Components algorithm should be both faster and remove a
     lot of workarounds we accumulated over the years.

   - Add TCP fraglist GRO support, allowing chaining multiple TCP
     packets and forwarding them together. Useful for small switches /
     routers which lack basic checksum offload in some scenarios (e.g.
     PPPoE).

   - Support using SMP threads for handling packet backlog i.e. packet
     processing from software interfaces and old drivers which don't use
     NAPI. This helps move the processing out of the softirq jumble.

   - Continue work of converting from rtnl lock to RCU protection.

     Don't require rtnl lock when reading: IPv6 routing FIB, IPv6
     address labels, netdev threaded NAPI sysfs files, bonding driver's
     sysfs files, MPLS devconf, IPv4 FIB rules, netns IDs, tcp metrics,
     TC Qdiscs, neighbor entries, ARP entries via ioctl(SIOCGARP), a lot
     of the link information available via rtnetlink.

   - Small optimizations from Eric to UDP wake up handling, memory
     accounting, RPS/RFS implementation, TCP packet sizing etc.

   - Allow direct page recycling in the bulk API used by XDP, for +2%
     PPS.

   - Support peek with an offset on TCP sockets.

   - Add MPTCP APIs for querying last time packets were received/sent/acked
     and whether MPTCP "upgrade" succeeded on a TCP socket.

   - Add intra-node communication shortcut to improve SMC performance.

   - Add IPv6 (and IPv{4,6}-over-IPv{4,6}) support to the GTP protocol
     driver.

   - Add HSR-SAN (RedBOX) mode of operation to the HSR protocol driver.

   - Add reset reasons for tracing what caused a TCP reset to be sent.

   - Introduce direction attribute for xfrm (IPSec) states. State can be
     used either for input or output packet processing.

  Things we sprinkled into general kernel code:

   - Add bitmap_{read,write}(), bitmap_size(), expose BYTES_TO_BITS().

     This required touch-ups and renaming of a few existing users.

   - Add Endian-dependent __counted_by_{le,be} annotations.

   - Make building selftests "quieter" by printing summaries like
     "CC object.o" rather than full commands with all the arguments.

  Netfilter:

   - Use GFP_KERNEL to clone elements, to deal better with OOM
     situations and avoid failures in the .commit step.

  BPF:

   - Add eBPF JIT for ARCv2 CPUs.

   - Support attaching kprobe BPF programs through kprobe_multi link in
     a session mode, meaning, a BPF program is attached to both function
     entry and return, the entry program can decide if the return
     program gets executed and the entry program can share u64 cookie
     value with return program. "Session mode" is a common use-case for
     tetragon and bpftrace.

   - Add the ability to specify and retrieve BPF cookie for raw
     tracepoint programs in order to ease migration from classic to raw
     tracepoints.

   - Add an internal-only BPF per-CPU instruction for resolving per-CPU
     memory addresses and implement support in x86, ARM64 and RISC-V
     JITs. This allows inlining functions which need to access per-CPU
     state.

   - Optimize x86 BPF JIT's emit_mov_imm64, and add support for various
     atomics in bpf_arena which can be JITed as a single x86
     instruction. Support BPF arena on ARM64.

   - Add a new bpf_wq API for deferring events and refactor
     process-context bpf_timer code to keep common code where possible.

   - Harden the BPF verifier's and/or/xor value tracking.

   - Introduce crypto kfuncs to let BPF programs call kernel crypto
     APIs.

   - Support bpf_tail_call_static() helper for BPF programs with GCC 13.

   - Add bpf_preempt_{disable,enable}() kfuncs in order to allow a BPF
     program to have code sections where preemption is disabled.

  Driver API:

   - Skip software TC processing completely if all installed rules are
     marked as HW-only, instead of checking the HW-only flag rule by
     rule.

   - Add support for configuring PoE (Power over Ethernet), similar to
     the already existing support for PoDL (Power over Data Line)
     config.

   - Initial bits of a queue control API, for now allowing a single
     queue to be reset without disturbing packet flow to other queues.

   - Common (ethtool) statistics for hardware timestamping.

  Tests and tooling:

   - Remove the need to create a config file to run the net forwarding
     tests so that a naive "make run_tests" can exercise them.

   - Define a method of writing tests which require an external endpoint
     to communicate with (to send/receive data towards the test
     machine). Add a few such tests.

   - Create a shared code library for writing Python tests. Expose the
     YAML Netlink library from tools/ to the tests for easy Netlink
     access.

   - Move netfilter tests under net/, extend them, separate performance
     tests from correctness tests, and iron out issues found by running
     them "on every commit".

   - Refactor BPF selftests to use common network helpers.

   - Further work filling in YAML definitions of Netlink messages for:
     nftables, team driver, bonding interfaces, vlan interfaces, VF
     info, TC u32 mark, TC police action.

   - Teach Python YAML Netlink to decode attribute policies.

   - Extend the definition of the "indexed array" construct in the specs
     to cover arrays of scalars rather than just nests.

   - Add hyperlinks between definitions in generated Netlink docs.

  Drivers:

   - Make sure unsupported flower control flags are rejected by drivers,
     and make more drivers report errors directly to the application
     rather than dmesg (large number of driver changes from Asbjørn
     Sloth Tønnesen).

   - Ethernet high-speed NICs:
      - Broadcom (bnxt):
         - support multiple RSS contexts and steering traffic to them
         - support XDP metadata
         - make page pool allocations more NUMA aware
      - Intel (100G, ice, idpf):
         - extract datapath code common among Intel drivers into a library
         - use fewer resources in switchdev by sharing queues with the PF
         - add PFCP filter support
         - add Ethernet filter support
         - use a spinlock instead of HW lock in PTP clock ops
         - support 5 layer Tx scheduler topology
      - nVidia/Mellanox:
         - 800G link modes and 100G SerDes speeds
         - per-queue IRQ coalescing configuration
      - Marvell Octeon:
         - support offloading TC packet mark action

   - Ethernet NICs consumer, embedded and virtual:
      - stop lying about skb->truesize in USB Ethernet drivers, it
        messes up TCP memory calculations
      - Google cloud vNIC:
         - support changing ring size via ethtool
         - support ring reset using the queue control API
      - VirtIO net:
         - expose flow hash from RSS to XDP
         - per-queue statistics
         - add selftests
      - Synopsys (stmmac):
         - support controllers which require an RX clock signal from the
           MII bus to perform their hardware initialization
      - TI:
         - icssg_prueth: support ICSSG-based Ethernet on AM65x SR1.0 devices
         - icssg_prueth: add SW TX / RX Coalescing based on hrtimers
         - cpsw: minimal XDP support
      - Renesas (ravb):
         - support describing the MDIO bus
      - Realtek (r8169):
         - add support for RTL8168M
      - Microchip Sparx5:
         - matchall and flower actions mirred and redirect

   - Ethernet switches:
      - nVidia/Mellanox:
         - improve events processing performance
      - Marvell:
         - add support for MV88E6250 family internal PHYs
      - Microchip:
         - add DCB and DSCP mapping support for KSZ switches
         - vsc73xx: convert to PHYLINK
      - Realtek:
         - rtl8226b/rtl8221b: add C45 instances and SerDes switching

   - Many driver changes related to PHYLIB and PHYLINK deprecated API
     cleanup

   - Ethernet PHYs:
      - Add a new driver for Airoha EN8811H 2.5 Gigabit PHY.
      - micrel: lan8814: add support for PPS out and external timestamp trigger

   - WiFi:
      - Disable Wireless Extensions (WEXT) in all Wi-Fi 7 devices
        drivers. Modern devices can only be configured using nl80211.
      - mac80211/cfg80211
         - handle color change per link for WiFi 7 Multi-Link Operation
      - Intel (iwlwifi):
         - don't support puncturing in 5 GHz
         - support monitor mode on passive channels
         - BZ-W device support
         - P2P with HE/EHT support
         - re-add support for firmware API 90
         - provide channel survey information for Automatic Channel Selection
      - MediaTek (mt76):
         - mt7921 LED control
         - mt7925 EHT radiotap support
         - mt7920e PCI support
      - Qualcomm (ath11k):
         - P2P support for QCA6390, WCN6855 and QCA2066
         - support hibernation
         - ieee80211-freq-limit Device Tree property support
      - Qualcomm (ath12k):
         - refactoring in preparation of multi-link support
         - suspend and hibernation support
         - ACPI support
         - debugfs support, including dfs_simulate_radar support
      - RealTek:
         - rtw88: RTL8723CS SDIO device support
         - rtw89: RTL8922AE Wi-Fi 7 PCI device support
         - rtw89: complete features of new WiFi 7 chip 8922AE including
           BT-coexistence and Wake-on-WLAN
         - rtw89: use BIOS ACPI settings to set TX power and channels
         - rtl8xxxu: enable Management Frame Protection (MFP) support

   - Bluetooth:
      - support for Intel BlazarI and Filmore Peak2 (BE201)
      - support for MediaTek MT7921S SDIO
      - initial support for Intel PCIe BT driver
      - remove HCI_AMP support"

* tag 'net-next-6.10' of git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net-next: (1827 commits)
  selftests: netfilter: fix packetdrill conntrack testcase
  net: gro: fix napi_gro_cb zeroed alignment
  Bluetooth: btintel_pcie: Refactor and code cleanup
  Bluetooth: btintel_pcie: Fix warning reported by sparse
  Bluetooth: hci_core: Fix not handling hdev->le_num_of_adv_sets=1
  Bluetooth: btintel: Fix compiler warning for multi_v7_defconfig config
  Bluetooth: btintel_pcie: Fix compiler warnings
  Bluetooth: btintel_pcie: Add *setup* function to download firmware
  Bluetooth: btintel_pcie: Add support for PCIe transport
  Bluetooth: btintel: Export few static functions
  Bluetooth: HCI: Remove HCI_AMP support
  Bluetooth: L2CAP: Fix div-by-zero in l2cap_le_flowctl_init()
  Bluetooth: qca: Fix error code in qca_read_fw_build_info()
  Bluetooth: hci_conn: Use __counted_by() and avoid -Wfamnae warning
  Bluetooth: btintel: Add support for Filmore Peak2 (BE201)
  Bluetooth: btintel: Add support for BlazarI
  LE Create Connection command timeout increased to 20 secs
  dt-bindings: net: bluetooth: Add MediaTek MT7921S SDIO Bluetooth
  Bluetooth: compute LE flow credits based on recvbuf space
  Bluetooth: hci_sync: Use cmd->num_cis instead of magic number
  ...
2024-05-14 19:42:24 -07:00
Linus Torvalds
896d3fce84 linux_kselftest-kunit-6.10-rc1
This kunit update for Linux 6.10-rc1 consists of:
 
 - fix to race condition in try-catch completion
 - change to __kunit_test_suites_init() to exit early if there is
   nothing to test
 - change to string-stream-test to use KUNIT_DEFINE_ACTION_WRAPPER
 - moving fault tests behind KUNIT_FAULT_TEST Kconfig option
 - kthread test fixes and improvements
 - iov_iter test fixes
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Merge tag 'linux_kselftest-kunit-6.10-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/shuah/linux-kselftest

Pull kunit updates from Shuah Khan:

 - fix race condition in try-catch completion

 - change __kunit_test_suites_init() to exit early if there is
   nothing to test

 - change string-stream-test to use KUNIT_DEFINE_ACTION_WRAPPER

 - move fault tests behind KUNIT_FAULT_TEST Kconfig option

 - kthread test fixes and improvements

 - iov_iter test fixes

* tag 'linux_kselftest-kunit-6.10-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/shuah/linux-kselftest:
  kunit: bail out early in __kunit_test_suites_init() if there are no suites to test
  kunit: string-stream-test: use KUNIT_DEFINE_ACTION_WRAPPER
  kunit: test: Move fault tests behind KUNIT_FAULT_TEST Kconfig option
  kunit: unregister the device on error
  kunit: Fix race condition in try-catch completion
  kunit: Add tests for fault
  kunit: Print last test location on fault
  kunit: Fix KUNIT_SUCCESS() calls in iov_iter tests
  kunit: Handle test faults
  kunit: Fix timeout message
  kunit: Fix kthread reference
  kunit: Handle thread creation error
2024-05-14 11:32:52 -07:00
Linus Torvalds
6bfd2d442a Updates for the interrupt subsystem:
- Core code:
 
    - Interrupt storm detection for the lockup watchdog:
 
      Lockups which are caused by interrupt storms are not easy to debug
      because there is no information about the events which make the lockup
      detector trigger.
 
      To make this more user friendly, provide an extenstion to interrupt
      statistics which allows to take snapshots and an interface to retrieve
      the delta to the snapshot. Use this new mechanism in the watchdog code
      to do a two stage lockup analysis by taking the snapshot and printing
      the deltas for the topmost active interrupts on the second trigger.
 
      Note: This contains both the interrupt and the watchdog changes as
      the latter depend on the former obviously.
 
   - Avoid summation loops in the /proc/interrupts output and use the global
     counter when possible
 
   - Skip suspended interrupts on CPU hotplug operations to ensure that they
     are not delivered before the system resumes the device drivers when
     coming out of suspend.
 
   - On CPU hot-unplug interrupts which are affine to the outgoing CPU are
     migrated to a different CPU in the affinity mask. This can fail when
     the CPUs have no vectors left. Instead of giving up try to migrate it
     to any online CPU and thereby breaking the affinity setting in order to
     prevent a stale device interrupt which targets an offline CPU
 
   - The usual small cleanups
 
  - Driver code:
 
   - Support for the RISCV AIA MSI controller
 
   - Make the interrupt allocation for the Loongson PCH controller more
     flexible to prevent vector exhaustion
 
   - The usual set of cleanups and fixes all over the place
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Merge tag 'irq-core-2024-05-12' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip

Pull interrupt subsystem updates from Thomas Gleixner:
 "Core code:

   - Interrupt storm detection for the lockup watchdog:

     Lockups which are caused by interrupt storms are not easy to debug
     because there is no information about the events which make the
     lockup detector trigger.

     To make this more user friendly, provide an extenstion to interrupt
     statistics which allows to take snapshots and an interface to
     retrieve the delta to the snapshot. Use this new mechanism in the
     watchdog code to do a two stage lockup analysis by taking the
     snapshot and printing the deltas for the topmost active interrupts
     on the second trigger.

     Note: This contains both the interrupt and the watchdog changes as
     the latter depend on the former obviously.

   - Avoid summation loops in the /proc/interrupts output and use the
     global counter when possible

   - Skip suspended interrupts on CPU hotplug operations to ensure that
     they are not delivered before the system resumes the device drivers
     when coming out of suspend.

   - On CPU hot-unplug interrupts which are affine to the outgoing CPU
     are migrated to a different CPU in the affinity mask. This can fail
     when the CPUs have no vectors left. Instead of giving up try to
     migrate it to any online CPU and thereby breaking the affinity
     setting in order to prevent a stale device interrupt which targets
     an offline CPU

   - The usual small cleanups

  Driver code:

   - Support for the RISCV AIA MSI controller

   - Make the interrupt allocation for the Loongson PCH controller more
     flexible to prevent vector exhaustion

   - The usual set of cleanups and fixes all over the place"

* tag 'irq-core-2024-05-12' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip: (51 commits)
  irqchip/gic-v3-its: Remove BUG_ON in its_vpe_irq_domain_alloc
  cpuidle: Avoid explicit cpumask allocation on stack
  irqchip/sifive-plic: Avoid explicit cpumask allocation on stack
  irqchip/riscv-aplic-direct: Avoid explicit cpumask allocation on stack
  irqchip/loongson-eiointc: Avoid explicit cpumask allocation on stack
  irqchip/gic-v3-its: Avoid explicit cpumask allocation on stack
  irqchip/irq-bcm6345-l1: Avoid explicit cpumask allocation on stack
  cpumask: Introduce cpumask_first_and_and()
  irqchip/irq-brcmstb-l2: Avoid saving mask on shutdown
  genirq: Reuse irq_is_nmi()
  genirq/cpuhotplug: Retry with cpu_online_mask when migration fails
  genirq/cpuhotplug: Skip suspended interrupts when restoring affinity
  arm64: dts: st: Add interrupt parent to pinctrl on stm32mp251
  arm64: dts: st: Add exti1 and exti2 nodes on stm32mp251
  ARM: dts: stm32: List exti parent interrupts on stm32mp131
  ARM: dts: stm32: List exti parent interrupts on stm32mp151
  arm64: Kconfig.platforms: Enable STM32_EXTI for ARCH_STM32
  irqchip/stm32-exti: Mark events reserved with RIF configuration check
  irqchip/stm32-exti: Skip secure events
  irqchip/stm32-exti: Convert driver to standard PM
  ...
2024-05-14 09:47:14 -07:00
Linus Torvalds
2d9db778dd Timers and timekeeping updates:
- Core code:
 
    - Make timekeeping and VDSO time readouts resilent against math overflow:
 
      In guest context the kernel is prone to math overflow when the host
      defers the timer interrupt due to overload, malfunction or malice.
 
      This can be mitigated by checking the clocksource delta for the
      maximum deferrement which is readily available. If that value is
      exceeded then the code uses a slowpath function which can handle the
      multiplication overflow.
 
      This functionality is enabled unconditionally in the kernel, but made
      conditional in the VDSO code. The latter is conditional because it
      allows architectures to optimize the check so it is not causing
      performance regressions.
 
      On X86 this is achieved by reworking the existing check for negative
      TSC deltas as a negative delta obviously exceeds the maximum
      deferrement when it is evaluated as an unsigned value. That avoids two
      conditionals in the hotpath and allows to hide both the negative delta
      and the large delta handling in the same slow path.
 
    - Add an initial minimal ktime_t abstraction for Rust
 
    - The usual boring cleanups and enhancements
 
  - Drivers:
 
    - Boring updates to device trees and trivial enhancements in various
      drivers.
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Merge tag 'timers-core-2024-05-12' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip

Pull timers and timekeeping updates from Thomas Gleixner:
 "Core code:

   - Make timekeeping and VDSO time readouts resilent against math
     overflow:

     In guest context the kernel is prone to math overflow when the host
     defers the timer interrupt due to overload, malfunction or malice.

     This can be mitigated by checking the clocksource delta for the
     maximum deferrement which is readily available. If that value is
     exceeded then the code uses a slowpath function which can handle
     the multiplication overflow.

     This functionality is enabled unconditionally in the kernel, but
     made conditional in the VDSO code. The latter is conditional
     because it allows architectures to optimize the check so it is not
     causing performance regressions.

     On X86 this is achieved by reworking the existing check for
     negative TSC deltas as a negative delta obviously exceeds the
     maximum deferrement when it is evaluated as an unsigned value. That
     avoids two conditionals in the hotpath and allows to hide both the
     negative delta and the large delta handling in the same slow path.

   - Add an initial minimal ktime_t abstraction for Rust

   - The usual boring cleanups and enhancements

  Drivers:

   - Boring updates to device trees and trivial enhancements in various
     drivers"

* tag 'timers-core-2024-05-12' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip: (33 commits)
  clocksource/drivers/arm_arch_timer: Mark hisi_161010101_oem_info const
  clocksource/drivers/timer-ti-dm: Remove an unused field in struct dmtimer
  clocksource/drivers/renesas-ostm: Avoid reprobe after successful early probe
  clocksource/drivers/renesas-ostm: Allow OSTM driver to reprobe for RZ/V2H(P) SoC
  dt-bindings: timer: renesas: ostm: Document Renesas RZ/V2H(P) SoC
  rust: time: doc: Add missing C header links
  clocksource: Make the int help prompt unit readable in ncurses
  hrtimer: Rename __hrtimer_hres_active() to hrtimer_hres_active()
  timerqueue: Remove never used function timerqueue_node_expires()
  rust: time: Add Ktime
  vdso: Fix powerpc build U64_MAX undeclared error
  clockevents: Convert s[n]printf() to sysfs_emit()
  clocksource: Convert s[n]printf() to sysfs_emit()
  clocksource: Make watchdog and suspend-timing multiplication overflow safe
  timekeeping: Let timekeeping_cycles_to_ns() handle both under and overflow
  timekeeping: Make delta calculation overflow safe
  timekeeping: Prepare timekeeping_cycles_to_ns() for overflow safety
  timekeeping: Fold in timekeeping_delta_to_ns()
  timekeeping: Consolidate timekeeping helpers
  timekeeping: Refactor timekeeping helpers
  ...
2024-05-14 09:27:40 -07:00
Linus Torvalds
6e5a0c30b6 Scheduler changes for v6.10:
- Add cpufreq pressure feedback for the scheduler
 
  - Rework misfit load-balancing wrt. affinity restrictions
 
  - Clean up and simplify the code around ::overutilized and
    ::overload access.
 
  - Simplify sched_balance_newidle()
 
  - Bump SCHEDSTAT_VERSION to 16 due to a cleanup of CPU_MAX_IDLE_TYPES
    handling that changed the output.
 
  - Rework & clean up <asm/vtime.h> interactions wrt. arch_vtime_task_switch()
 
  - Reorganize, clean up and unify most of the higher level
    scheduler balancing function names around the sched_balance_*()
    prefix.
 
  - Simplify the balancing flag code (sched_balance_running)
 
  - Miscellaneous cleanups & fixes
 
 Signed-off-by: Ingo Molnar <mingo@kernel.org>
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Merge tag 'sched-core-2024-05-13' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip

Pull scheduler updates from Ingo Molnar:

 - Add cpufreq pressure feedback for the scheduler

 - Rework misfit load-balancing wrt affinity restrictions

 - Clean up and simplify the code around ::overutilized and
   ::overload access.

 - Simplify sched_balance_newidle()

 - Bump SCHEDSTAT_VERSION to 16 due to a cleanup of CPU_MAX_IDLE_TYPES
   handling that changed the output.

 - Rework & clean up <asm/vtime.h> interactions wrt arch_vtime_task_switch()

 - Reorganize, clean up and unify most of the higher level
   scheduler balancing function names around the sched_balance_*()
   prefix

 - Simplify the balancing flag code (sched_balance_running)

 - Miscellaneous cleanups & fixes

* tag 'sched-core-2024-05-13' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip: (50 commits)
  sched/pelt: Remove shift of thermal clock
  sched/cpufreq: Rename arch_update_thermal_pressure() => arch_update_hw_pressure()
  thermal/cpufreq: Remove arch_update_thermal_pressure()
  sched/cpufreq: Take cpufreq feedback into account
  cpufreq: Add a cpufreq pressure feedback for the scheduler
  sched/fair: Fix update of rd->sg_overutilized
  sched/vtime: Do not include <asm/vtime.h> header
  s390/irq,nmi: Include <asm/vtime.h> header directly
  s390/vtime: Remove unused __ARCH_HAS_VTIME_TASK_SWITCH leftover
  sched/vtime: Get rid of generic vtime_task_switch() implementation
  sched/vtime: Remove confusing arch_vtime_task_switch() declaration
  sched/balancing: Simplify the sg_status bitmask and use separate ->overloaded and ->overutilized flags
  sched/fair: Rename set_rd_overutilized_status() to set_rd_overutilized()
  sched/fair: Rename SG_OVERLOAD to SG_OVERLOADED
  sched/fair: Rename {set|get}_rd_overload() to {set|get}_rd_overloaded()
  sched/fair: Rename root_domain::overload to ::overloaded
  sched/fair: Use helper functions to access root_domain::overload
  sched/fair: Check root_domain::overload value before update
  sched/fair: Combine EAS check with root_domain::overutilized access
  sched/fair: Simplify the continue_balancing logic in sched_balance_newidle()
  ...
2024-05-13 17:18:51 -07:00
Linus Torvalds
87caef4220 hardening updates for 6.10-rc1
- selftests: Add str*cmp tests (Ivan Orlov)
 
 - __counted_by: provide UAPI for _le/_be variants (Erick Archer)
 
 - Various strncpy deprecation refactors (Justin Stitt)
 
 - stackleak: Use a copy of soon-to-be-const sysctl table (Thomas Weißschuh)
 
 - UBSAN: Work around i386 -regparm=3 bug with Clang prior to version 19
 
 - Provide helper to deal with non-NUL-terminated string copying
 
 - SCSI: Fix older string copying bugs (with new helper)
 
 - selftests: Consolidate string helper behavioral tests
 
 - selftests: add memcpy() fortify tests
 
 - string: Add additional __realloc_size() annotations for "dup" helpers
 
 - LKDTM: Fix KCFI+rodata+objtool confusion
 
 - hardening.config: Enable KCFI
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Merge tag 'hardening-6.10-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/kees/linux

Pull hardening updates from Kees Cook:
 "The bulk of the changes here are related to refactoring and expanding
  the KUnit tests for string helper and fortify behavior.

  Some trivial strncpy replacements in fs/ were carried in my tree. Also
  some fixes to SCSI string handling were carried in my tree since the
  helper for those was introduce here. Beyond that, just little fixes
  all around: objtool getting confused about LKDTM+KCFI, preparing for
  future refactors (constification of sysctl tables, additional
  __counted_by annotations), a Clang UBSAN+i386 crash fix, and adding
  more options in the hardening.config Kconfig fragment.

  Summary:

   - selftests: Add str*cmp tests (Ivan Orlov)

   - __counted_by: provide UAPI for _le/_be variants (Erick Archer)

   - Various strncpy deprecation refactors (Justin Stitt)

   - stackleak: Use a copy of soon-to-be-const sysctl table (Thomas
     Weißschuh)

   - UBSAN: Work around i386 -regparm=3 bug with Clang prior to
     version 19

   - Provide helper to deal with non-NUL-terminated string copying

   - SCSI: Fix older string copying bugs (with new helper)

   - selftests: Consolidate string helper behavioral tests

   - selftests: add memcpy() fortify tests

   - string: Add additional __realloc_size() annotations for "dup"
     helpers

   - LKDTM: Fix KCFI+rodata+objtool confusion

   - hardening.config: Enable KCFI"

* tag 'hardening-6.10-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/kees/linux: (29 commits)
  uapi: stddef.h: Provide UAPI macros for __counted_by_{le, be}
  stackleak: Use a copy of the ctl_table argument
  string: Add additional __realloc_size() annotations for "dup" helpers
  kunit/fortify: Fix replaced failure path to unbreak __alloc_size
  hardening: Enable KCFI and some other options
  lkdtm: Disable CFI checking for perms functions
  kunit/fortify: Add memcpy() tests
  kunit/fortify: Do not spam logs with fortify WARNs
  kunit/fortify: Rename tests to use recommended conventions
  init: replace deprecated strncpy with strscpy_pad
  kunit/fortify: Fix mismatched kvalloc()/vfree() usage
  scsi: qla2xxx: Avoid possible run-time warning with long model_num
  scsi: mpi3mr: Avoid possible run-time warning with long manufacturer strings
  scsi: mptfusion: Avoid possible run-time warning with long manufacturer strings
  fs: ecryptfs: replace deprecated strncpy with strscpy
  hfsplus: refactor copy_name to not use strncpy
  reiserfs: replace deprecated strncpy with scnprintf
  virt: acrn: replace deprecated strncpy with strscpy
  ubsan: Avoid i386 UBSAN handler crashes with Clang
  ubsan: Remove 1-element array usage in debug reporting
  ...
2024-05-13 14:14:05 -07:00
Linus Torvalds
0c9f4ac808 for-6.10/block-20240511
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Merge tag 'for-6.10/block-20240511' of git://git.kernel.dk/linux

Pull block updates from Jens Axboe:

 - Add a partscan attribute in sysfs, fixing an issue with systemd
   relying on an internal interface that went away.

 - Attempt #2 at making long running discards interruptible. The
   previous attempt went into 6.9, but we ended up mostly reverting it
   as it had issues.

 - Remove old ida_simple API in bcache

 - Support for zoned write plugging, greatly improving the performance
   on zoned devices.

 - Remove the old throttle low interface, which has been experimental
   since 2017 and never made it beyond that and isn't being used.

 - Remove page->index debugging checks in brd, as it hasn't caught
   anything and prepares us for removing in struct page.

 - MD pull request from Song

 - Don't schedule block workers on isolated CPUs

* tag 'for-6.10/block-20240511' of git://git.kernel.dk/linux: (84 commits)
  blk-throttle: delay initialization until configuration
  blk-throttle: remove CONFIG_BLK_DEV_THROTTLING_LOW
  block: fix that util can be greater than 100%
  block: support to account io_ticks precisely
  block: add plug while submitting IO
  bcache: fix variable length array abuse in btree_iter
  bcache: Remove usage of the deprecated ida_simple_xx() API
  md: Revert "md: Fix overflow in is_mddev_idle"
  blk-lib: check for kill signal in ioctl BLKDISCARD
  block: add a bio_await_chain helper
  block: add a blk_alloc_discard_bio helper
  block: add a bio_chain_and_submit helper
  block: move discard checks into the ioctl handler
  block: remove the discard_granularity check in __blkdev_issue_discard
  block/ioctl: prefer different overflow check
  null_blk: Fix the WARNING: modpost: missing MODULE_DESCRIPTION()
  block: fix and simplify blkdevparts= cmdline parsing
  block: refine the EOF check in blkdev_iomap_begin
  block: add a partscan sysfs attribute for disks
  block: add a disk_has_partscan helper
  ...
2024-05-13 13:03:54 -07:00
Linus Torvalds
b19239143e Hi,
These are the changes for the TPM driver with a single major new
 feature: TPM bus encryption and integrity protection. The key pair
 on TPM side is generated from so called null random seed per power
 on of the machine [1]. This supports the TPM encryption of the hard
 drive by adding layer of protection against bus interposer attacks.
 
 Other than the pull request a few minor fixes and documentation for
 tpm_tis to clarify basics of TPM localities for future patch review
 discussions (will be extended and refined over times, just a seed).
 
 [1] https://lore.kernel.org/linux-integrity/20240429202811.13643-1-James.Bottomley@HansenPartnership.com/
 
 BR, Jarkko
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Merge tag 'tpmdd-next-6.10-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/jarkko/linux-tpmdd

Pull TPM updates from Jarkko Sakkinen:
 "These are the changes for the TPM driver with a single major new
  feature: TPM bus encryption and integrity protection. The key pair on
  TPM side is generated from so called null random seed per power on of
  the machine [1]. This supports the TPM encryption of the hard drive by
  adding layer of protection against bus interposer attacks.

  Other than that, a few minor fixes and documentation for tpm_tis to
  clarify basics of TPM localities for future patch review discussions
  (will be extended and refined over times, just a seed)"

Link: https://lore.kernel.org/linux-integrity/20240429202811.13643-1-James.Bottomley@HansenPartnership.com/ [1]

* tag 'tpmdd-next-6.10-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/jarkko/linux-tpmdd: (28 commits)
  Documentation: tpm: Add TPM security docs toctree entry
  tpm: disable the TPM if NULL name changes
  Documentation: add tpm-security.rst
  tpm: add the null key name as a sysfs export
  KEYS: trusted: Add session encryption protection to the seal/unseal path
  tpm: add session encryption protection to tpm2_get_random()
  tpm: add hmac checks to tpm2_pcr_extend()
  tpm: Add the rest of the session HMAC API
  tpm: Add HMAC session name/handle append
  tpm: Add HMAC session start and end functions
  tpm: Add TCG mandated Key Derivation Functions (KDFs)
  tpm: Add NULL primary creation
  tpm: export the context save and load commands
  tpm: add buffer function to point to returned parameters
  crypto: lib - implement library version of AES in CFB mode
  KEYS: trusted: tpm2: Use struct tpm_buf for sized buffers
  tpm: Add tpm_buf_read_{u8,u16,u32}
  tpm: TPM2B formatted buffers
  tpm: Store the length of the tpm_buf data separately.
  tpm: Update struct tpm_buf documentation comments
  ...
2024-05-13 10:40:15 -07:00
Linus Torvalds
cd97950cbc slab updates for 6.10
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Merge tag 'slab-for-6.10' of git://git.kernel.org/pub/scm/linux/kernel/git/vbabka/slab

Pull slab updates from Vlastimil Babka:
 "This time it's mostly random cleanups and fixes, with two performance
  fixes that might have significant impact, but limited to systems
  experiencing particular bad corner case scenarios rather than general
  performance improvements.

  The memcg hook changes are going through the mm tree due to
  dependencies.

   - Prevent stalls when reading /proc/slabinfo (Jianfeng Wang)

     This fixes the long-standing problem that can happen with workloads
     that have alloc/free patterns resulting in many partially used
     slabs (in e.g. dentry cache). Reading /proc/slabinfo will traverse
     the long partial slab list under spinlock with disabled irqs and
     thus can stall other processes or even trigger the lockup
     detection. The traversal is only done to count free objects so that
     <active_objs> column can be reported along with <num_objs>.

     To avoid affecting fast paths with another shared counter
     (attempted in the past) or complex partial list traversal schemes
     that allow rescheduling, the chosen solution resorts to
     approximation - when the partial list is over 10000 slabs long, we
     will only traverse first 5000 slabs from head and tail each and use
     the average of those to estimate the whole list. Both head and tail
     are used as the slabs near head to tend to have more free objects
     than the slabs towards the tail.

     It is expected the approximation should not break existing
     /proc/slabinfo consumers. The <num_objs> field is still accurate
     and reflects the overall kmem_cache footprint. The <active_objs>
     was already imprecise due to cpu and percpu-partial slabs, so can't
     be relied upon to determine exact cache usage. The difference
     between <active_objs> and <num_objs> is mainly useful to determine
     the slab fragmentation, and that will be possible even with the
     approximation in place.

   - Prevent allocating many slabs when a NUMA node is full (Chen Jun)

     Currently, on NUMA systems with a node under significantly bigger
     pressure than other nodes, the fallback strategy may result in each
     kmalloc_node() that can't be safisfied from the preferred node, to
     allocate a new slab on a fallback node, and not reuse the slabs
     already on that node's partial list.

     This is now fixed and partial lists of fallback nodes are checked
     even for kmalloc_node() allocations. It's still preferred to
     allocate a new slab on the requested node before a fallback, but
     only with a GFP_NOWAIT attempt, which will fail quickly when the
     node is under a significant memory pressure.

   - More SLAB removal related cleanups (Xiu Jianfeng, Hyunmin Lee)

   - Fix slub_kunit self-test with hardened freelists (Guenter Roeck)

   - Mark racy accesses for KCSAN (linke li)

   - Misc cleanups (Xiongwei Song, Haifeng Xu, Sangyun Kim)"

* tag 'slab-for-6.10' of git://git.kernel.org/pub/scm/linux/kernel/git/vbabka/slab:
  mm/slub: remove the check for NULL kmalloc_caches
  mm/slub: create kmalloc 96 and 192 caches regardless cache size order
  mm/slub: mark racy access on slab->freelist
  slub: use count_partial_free_approx() in slab_out_of_memory()
  slub: introduce count_partial_free_approx()
  slub: Set __GFP_COMP in kmem_cache by default
  mm/slub: remove duplicate initialization for early_kmem_cache_node_alloc()
  mm/slub: correct comment in do_slab_free()
  mm/slub, kunit: Use inverted data to corrupt kmem cache
  mm/slub: simplify get_partial_node()
  mm/slub: add slub_get_cpu_partial() helper
  mm/slub: remove the check of !kmem_cache_has_cpu_partial()
  mm/slub: Reduce memory consumption in extreme scenarios
  mm/slub: mark racy accesses on slab->slabs
  mm/slub: remove dummy slabinfo functions
2024-05-13 10:28:34 -07:00
Linus Torvalds
2e57d1d606 sparc32,parisc,csky: Provide one-byte and two-byte cmpxchg() support
This series provides native one-byte and two-byte cmpxchg() support
 for sparc32 and parisc, courtesy of Al Viro.  This support is provided
 by the same hashed-array-of-locks technique used for the other atomic
 operations provided for these two platforms.
 
 This series also provides emulated one-byte cmpxchg() support for csky
 using a new cmpxchg_emu_u8() function that uses a four-byte cmpxchg()
 to emulate the one-byte variant.
 
 Similar patches for emulation of one-byte cmpxchg() for arc, sh, and
 xtensa have not yet received maintainer acks, so they are slated for
 the v6.11 merge window.
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Merge tag 'cmpxchg.2024.05.11a' of git://git.kernel.org/pub/scm/linux/kernel/git/paulmck/linux-rcu

Pull cmpxchg updates from Paul McKenney:
 "Provide one-byte and two-byte cmpxchg() support on sparc32, parisc,
  and csky

  This provides native one-byte and two-byte cmpxchg() support for
  sparc32 and parisc, courtesy of Al Viro. This support is provided by
  the same hashed-array-of-locks technique used for the other atomic
  operations provided for these two platforms.

  There is also emulated one-byte cmpxchg() support for csky using a new
  cmpxchg_emu_u8() function that uses a four-byte cmpxchg() to emulate
  the one-byte variant.

  Similar patches for emulation of one-byte cmpxchg() for arc, sh, and
  xtensa have not yet received maintainer acks, so they are slated for
  the v6.11 merge window"

* tag 'cmpxchg.2024.05.11a' of git://git.kernel.org/pub/scm/linux/kernel/git/paulmck/linux-rcu:
  csky: Emulate one-byte cmpxchg
  lib: Add one-byte emulation function
  parisc: add u16 support to cmpxchg()
  parisc: add missing export of __cmpxchg_u8()
  parisc: unify implementations of __cmpxchg_u{8,32,64}
  parisc: __cmpxchg_u32(): lift conversion into the callers
  sparc32: add __cmpxchg_u{8,16}() and teach __cmpxchg() to handle those sizes
  sparc32: unify __cmpxchg_u{32,64}
  sparc32: make the first argument of __cmpxchg_u64() volatile u64 *
  sparc32: make __cmpxchg_u32() return u32
2024-05-13 10:05:39 -07:00
Linus Torvalds
c22c3e0753 18 hotfixes, 7 of which are cc:stable.
More fixups for this cycle's page_owner updates.  And a few userfaultfd
 fixes.  Otherwise, random singletons - see the individual changelogs for
 details.
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Merge tag 'mm-hotfixes-stable-2024-05-10-13-14' of git://git.kernel.org/pub/scm/linux/kernel/git/akpm/mm

Pull MM fixes from Andrew Morton:
 "18 hotfixes, 7 of which are cc:stable.

  More fixups for this cycle's page_owner updates. And a few userfaultfd
  fixes. Otherwise, random singletons - see the individual changelogs
  for details"

* tag 'mm-hotfixes-stable-2024-05-10-13-14' of git://git.kernel.org/pub/scm/linux/kernel/git/akpm/mm:
  mailmap: add entry for Barry Song
  selftests/mm: fix powerpc ARCH check
  mailmap: add entry for John Garry
  XArray: set the marks correctly when splitting an entry
  selftests/vDSO: fix runtime errors on LoongArch
  selftests/vDSO: fix building errors on LoongArch
  mm,page_owner: don't remove __GFP_NOLOCKDEP in add_stack_record_to_list
  fs/proc/task_mmu: fix uffd-wp confusion in pagemap_scan_pmd_entry()
  fs/proc/task_mmu: fix loss of young/dirty bits during pagemap scan
  mm/vmalloc: fix return value of vb_alloc if size is 0
  mm: use memalloc_nofs_save() in page_cache_ra_order()
  kmsan: compiler_types: declare __no_sanitize_or_inline
  lib/test_xarray.c: fix error assumptions on check_xa_multi_store_adv_add()
  tools: fix userspace compilation with new test_xarray changes
  MAINTAINERS: update URL's for KEYS/KEYRINGS_INTEGRITY and TPM DEVICE DRIVER
  mm: page_owner: fix wrong information in dump_page_owner
  maple_tree: fix mas_empty_area_rev() null pointer dereference
  mm/userfaultfd: reset ptes when close() for wr-protected ones
2024-05-10 14:16:03 -07:00
Masahiro Yamada
b1992c3772 kbuild: use $(src) instead of $(srctree)/$(src) for source directory
Kbuild conventionally uses $(obj)/ for generated files, and $(src)/ for
checked-in source files. It is merely a convention without any functional
difference. In fact, $(obj) and $(src) are exactly the same, as defined
in scripts/Makefile.build:

    src := $(obj)

When the kernel is built in a separate output directory, $(src) does
not accurately reflect the source directory location. While Kbuild
resolves this discrepancy by specifying VPATH=$(srctree) to search for
source files, it does not cover all cases. For example, when adding a
header search path for local headers, -I$(srctree)/$(src) is typically
passed to the compiler.

This introduces inconsistency between upstream and downstream Makefiles
because $(src) is used instead of $(srctree)/$(src) for the latter.

To address this inconsistency, this commit changes the semantics of
$(src) so that it always points to the directory in the source tree.

Going forward, the variables used in Makefiles will have the following
meanings:

  $(obj)     - directory in the object tree
  $(src)     - directory in the source tree  (changed by this commit)
  $(objtree) - the top of the kernel object tree
  $(srctree) - the top of the kernel source tree

Consequently, $(srctree)/$(src) in upstream Makefiles need to be replaced
with $(src).

Signed-off-by: Masahiro Yamada <masahiroy@kernel.org>
Reviewed-by: Nicolas Schier <nicolas@fjasle.eu>
2024-05-10 04:34:52 +09:00
Ard Biesheuvel
f135440447 crypto: lib - implement library version of AES in CFB mode
Implement AES in CFB mode using the existing, mostly constant-time
generic AES library implementation. This will be used by the TPM code
to encrypt communications with TPM hardware, which is often a discrete
component connected using sniffable wires or traces.

While a CFB template does exist, using a skcipher is a major pain for
non-performance critical synchronous crypto where the algorithm is known
at compile time and the data is in contiguous buffers with valid kernel
virtual addresses.

Tested-by: James Bottomley <James.Bottomley@HansenPartnership.com>
Reviewed-by: James Bottomley <James.Bottomley@HansenPartnership.com>
Reviewed-by: Jarkko Sakkinen <jarkko@kernel.org>
Link: https://lore.kernel.org/all/20230216201410.15010-1-James.Bottomley@HansenPartnership.com/
Signed-off-by: Ard Biesheuvel <ardb@kernel.org>
Signed-off-by: James Bottomley <James.Bottomley@HansenPartnership.com>
Tested-by: Jarkko Sakkinen <jarkko@kernel.org>
Signed-off-by: Jarkko Sakkinen <jarkko@kernel.org>
2024-05-09 22:30:51 +03:00
Jakub Kicinski
e7073830cc Merge git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net
Cross-merge networking fixes after downstream PR.

No conflicts.

Adjacent changes:

drivers/net/ethernet/hisilicon/hns3/hns3pf/hclge_main.c
  35d92abfba ("net: hns3: fix kernel crash when devlink reload during initialization")
  2a1a1a7b5f ("net: hns3: add command queue trace for hns3")

Signed-off-by: Jakub Kicinski <kuba@kernel.org>
2024-05-09 10:01:01 -07:00
Yury Norov
0b2811ba11 bitmap: relax find_nth_bit() limitation on return value
The function claims to return the bitmap size, if Nth bit doesn't exist.
This rule is violated in inline case because the fns() that is used
there doesn't know anything about size of the bitmap.

So, relax this requirement to '>= size', and make the outline
implementation a bit cheaper.

All in-tree kernel users of find_nth_bit() are safe against that.

Reported-by: Rasmus Villemoes <linux@rasmusvillemoes.dk>
Closes: https://lore.kernel.org/all/Zi50cAgR8nZvgLa3@yury-ThinkPad/T/#m6da806a0525e74dcc91f35e5f20766ed4e853e8a
Signed-off-by: Yury Norov <yury.norov@gmail.com>
2024-05-09 09:25:08 -07:00
Yury Norov
77db1920a8 lib: make test_bitops compilable into the kernel image
The test now is limited to be compiled as a module. There's no technical
reason for it. Now that the test bears some performance benchmarks, it
would be reasonable to run it at kernel load time, before userspace
starts, to reduce possible jitter.

Reviewed-by: Kuan-Wei Chiu <visitorckw@gmail.com>
Signed-off-by: Yury Norov <yury.norov@gmail.com>
2024-05-09 09:25:08 -07:00
Kuan-Wei Chiu
0a2c6664e5 lib/test_bitops: Add benchmark test for fns()
Introduce a benchmark test for the fns(). It measures the total time
taken by fns() to process 10,000 test data generated using
get_random_bytes() for each n in the range [0, BITS_PER_LONG).

example:
test_bitops: fns:             7637268 ns

CC: Andrew Morton <akpm@linux-foundation.org>
CC: Rasmus Villemoes <linux@rasmusvillemoes.dk>
CC: David Laight <David.Laight@aculab.com>
Signed-off-by: Kuan-Wei Chiu <visitorckw@gmail.com>
Suggested-by: Yury Norov <yury.norov@gmail.com>
Signed-off-by: Yury Norov <yury.norov@gmail.com>
2024-05-09 09:25:08 -07:00
Kent Overstreet
4c5b7294de closures: closure_sync_timeout()
Add a new variant of closure_sync_timeout() that takes a timeout.

Note that when this returns -ETIME the closure will still be waiting on
something, i.e. it's not safe to return if you've got a stack allocated
closure.

Signed-off-by: Kent Overstreet <kent.overstreet@linux.dev>
2024-05-08 17:29:22 -04:00
Andy Shevchenko
22bcc915ae kfifo: don't use "proxy" headers
Update header inclusions to follow IWYU (Include What You Use) principle.

Link: https://lkml.kernel.org/r/20240423192529.3249134-4-andriy.shevchenko@linux.intel.com
Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
Cc: Alain Volmat <alain.volmat@foss.st.com>
Cc: AngeloGioacchino Del Regno <angelogioacchino.delregno@collabora.com>
Cc: Chen-Yu Tsai <wens@csie.org>
Cc: Hans Verkuil <hverkuil-cisco@xs4all.nl>
Cc: Jernej Skrabec <jernej.skrabec@gmail.com>
Cc: Matthias Brugger <matthias.bgg@gmail.com>
Cc: Mauro Carvalho Chehab <mchehab@kernel.org>
Cc: Patrice Chotard <patrice.chotard@foss.st.com>
Cc: Rob Herring <robh@kernel.org>
Cc: Samuel Holland <samuel@sholland.org>
Cc: Sean Wang <sean.wang@mediatek.com>
Cc: Sean Young <sean@mess.org>
Cc: Stefani Seibold <stefani@seibold.net>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
2024-05-08 08:41:27 -07:00
Florian Fainelli
0d5044b4e7 lib: Allow for the DIM library to be modular
Allow the Dynamic Interrupt Moderation (DIM) library to be built as a
module. This is particularly useful in an Android GKI (Google Kernel
Image) configuration where everything is built as a module, including
Ethernet controller drivers. Having to build DIMLIB into the kernel
image with potentially no user is wasteful.

Signed-off-by: Florian Fainelli <florian.fainelli@broadcom.com>
Reviewed-by: Alexander Lobakin <aleksander.lobakin@intel.com>
Link: https://lore.kernel.org/r/20240506175040.410446-1-florian.fainelli@broadcom.com
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
2024-05-07 16:42:45 -07:00
Scott Mayhew
5496b9b77d kunit: bail out early in __kunit_test_suites_init() if there are no suites to test
Commit c72a870926 added a mutex to prevent kunit tests from running
concurrently.  Unfortunately that mutex gets locked during module load
regardless of whether the module actually has any kunit tests.  This
causes a problem for kunit tests that might need to load other kernel
modules (e.g. gss_krb5_test loading the camellia module).

So check to see if there are actually any tests to run before locking
the kunit_run_lock mutex.

Fixes: c72a870926 ("kunit: add ability to run tests after boot using debugfs")
Reported-by: Nico Pache <npache@redhat.com>
Signed-off-by: Scott Mayhew <smayhew@redhat.com>
Reviewed-by: Rae Moar <rmoar@google.com>
Reviewed-by: David Gow <davidgow@google.com>
Signed-off-by: Shuah Khan <skhan@linuxfoundation.org>
2024-05-06 14:22:02 -06:00
Ivan Orlov
a96a394577 kunit: string-stream-test: use KUNIT_DEFINE_ACTION_WRAPPER
Use KUNIT_DEFINE_ACTION_WRAPPER macro to define the 'kfree' and
'string_stream_destroy' wrappers for kunit_add_action.

Signed-off-by: Ivan Orlov <ivan.orlov0322@gmail.com>
Reviewed-by: Rae Moar <rmoar@google.com>
Acked-by: David Gow <davidgow@google.com>
Signed-off-by: Shuah Khan <skhan@linuxfoundation.org>
2024-05-06 14:22:02 -06:00
David Gow
4b513a02fd kunit: test: Move fault tests behind KUNIT_FAULT_TEST Kconfig option
The NULL dereference tests in kunit_fault deliberately trigger a kernel
BUG(), and therefore print the associated stack trace, even when the
test passes. This is both annoying (as it bloats the test output), and
can confuse some test harnesses, which assume any BUG() is a failure.

Allow these tests to be specifically disabled (without disabling all
of KUnit's other tests), by placing them behind the
CONFIG_KUNIT_FAULT_TEST Kconfig option. This is enabled by default, but
can be set to 'n' to disable the test. An empty 'kunit_fault' suite is
left behind, which will automatically be marked 'skipped'.

As the fault tests already were disabled under UML (as they weren't
compatible with its fault handling), we can simply adapt those
conditions, and add a dependency on !UML for our new option.

Suggested-by: Guenter Roeck <linux@roeck-us.net>
Link: https://lore.kernel.org/all/928249cc-e027-4f7f-b43f-502f99a1ea63@roeck-us.net/
Fixes: 82b0beff3497 ("kunit: Add tests for fault")
Signed-off-by: David Gow <davidgow@google.com>
Reviewed-by: Mickaël Salaün <mic@digikod.net>
Reviewed-by: Rae Moar <rmoar@google.com>
Signed-off-by: Shuah Khan <skhan@linuxfoundation.org>
2024-05-06 14:22:02 -06:00
Wander Lairson Costa
fabd480b72 kunit: unregister the device on error
kunit_init_device() should unregister the device on bus register error,
but mistakenly it tries to unregister the bus.

Unregister the device instead of the bus.

Signed-off-by: Wander Lairson Costa <wander@redhat.com>
Fixes: d03c720e03 ("kunit: Add APIs for managing devices")
Reviewed-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Signed-off-by: Shuah Khan <skhan@linuxfoundation.org>
2024-05-06 14:22:02 -06:00
David Gow
1eb69ded80 kunit: Fix race condition in try-catch completion
KUnit's try-catch infrastructure now uses vfork_done, which is always
set to a valid completion when a kthread is created, but which is set to
NULL once the thread terminates. This creates a race condition, where
the kthread exits before we can wait on it.

Keep a copy of vfork_done, which is taken before we wake_up_process()
and so valid, and wait on that instead.

Fixes: 93533996100c ("kunit: Handle test faults")
Reported-by: Linux Kernel Functional Testing <lkft@linaro.org>
Closes: https://lore.kernel.org/lkml/20240410102710.35911-1-naresh.kamboju@linaro.org/
Tested-by: Linux Kernel Functional Testing <lkft@linaro.org>
Acked-by: Mickaël Salaün <mic@digikod.net>
Signed-off-by: David Gow <davidgow@google.com>
Reviewed-by: Rae Moar <rmoar@google.com>
Tested-by: Miguel Ojeda <ojeda@kernel.org>
Signed-off-by: Shuah Khan <skhan@linuxfoundation.org>
2024-05-06 14:22:02 -06:00