btf_dedup_is_equiv() used to compare btf_type->info fields, before doing
kind-specific equivalence check. This comparsion implicitly verified
that candidate and canonical types are of the same kind. With enum fwd
resolution logic this check couldn't be done generically anymore, as for
enums info contains vlen, which differs between enum fwd and
fully-defined enum, so this check was subsumed by kind-specific
equivalence checks.
This change caused btf_dedup_is_equiv() to let through VOID vs other
types check to reach switch, which was never meant to be handing VOID
kind, as VOID kind is always pre-resolved to itself and is only
equivalent to itself, which is checked early in btf_dedup_is_equiv().
This change adds back BTF kind equality check in place of more generic
btf_type->info check, still defering further kind-specific checks to
a per-kind switch.
Fixes: 9768095ba9 ("btf: resolve enum fwds in btf_dedup")
Signed-off-by: Andrii Nakryiko <andriin@fb.com>
Signed-off-by: Alexei Starovoitov <ast@kernel.org>
Since commit
ad67b74d24 ("printk: hash addresses printed with %p")
at boot "____ptrval____" is printed instead of the trampoline addresses:
Base memory trampoline at [(____ptrval____)] 99000 size 24576
Remove the print as we don't want to leak kernel addresses and this
statement is not needed anymore.
Fixes: ad67b74d24 ("printk: hash addresses printed with %p")
Signed-off-by: Matteo Croce <mcroce@redhat.com>
Signed-off-by: Borislav Petkov <bp@suse.de>
Cc: "H. Peter Anvin" <hpa@zytor.com>
Cc: Ingo Molnar <mingo@redhat.com>
Cc: Thomas Gleixner <tglx@linutronix.de>
Cc: x86-ml <x86@kernel.org>
Link: https://lkml.kernel.org/r/20190326203046.20787-1-mcroce@redhat.com
If we use the "i2c-" prefix for the binding documentation file name,
then it should match the file name of the driver, if possible. It is
possible for this driver, so rename it.
Signed-off-by: Wolfram Sang <wsa@the-dreams.de>
If we use the "i2c-" prefix for the binding documentation file name,
then it should match the file name of the driver, if possible. It is
possible for this driver, so rename it.
Signed-off-by: Wolfram Sang <wsa@the-dreams.de>
Acked-by: Maxime Ripard <maxime.ripard@bootlin.com>
If we use the "i2c-" prefix for the binding documentation file name,
then it should match the file name of the driver, if possible. It is
possible for this driver, so rename it.
Signed-off-by: Wolfram Sang <wsa@the-dreams.de>
If we use the "i2c-" prefix for the binding documentation file name,
then it should match the file name of the driver, if possible. It is
possible for this driver, so rename it.
Signed-off-by: Wolfram Sang <wsa@the-dreams.de>
If we use the "i2c-" prefix for the binding documentation file name,
then it should match the file name of the driver, if possible. It is
possible for this driver, so rename it.
Signed-off-by: Wolfram Sang <wsa@the-dreams.de>
Similar to commit edfc3722cf ("HID: quirks: Fix keyboard + touchpad on
Toshiba Click Mini not working"), the Lenovo Miix 630 has a combo
keyboard/touchpad device with vid:pid of 04F3:0400, which is shared with
Elan touchpads. The combo on the Miix 630 has an ACPI id of QTEC0001,
which is not claimed by the elan_i2c driver, so key on that similar to
what was done for the Toshiba Click Mini.
Signed-off-by: Jeffrey Hugo <jeffrey.l.hugo@gmail.com>
Signed-off-by: Jiri Kosina <jkosina@suse.cz>
The declarations related to immovable memory handling are out of the
BOOT_COMPRESSED_MISC_H #ifdef scope, wrap them inside.
Signed-off-by: Baoquan He <bhe@redhat.com>
Signed-off-by: Borislav Petkov <bp@suse.de>
Cc: Chao Fan <fanc.fnst@cn.fujitsu.com>
Cc: "H. Peter Anvin" <hpa@zytor.com>
Cc: Ingo Molnar <mingo@redhat.com>
Cc: Juergen Gross <jgross@suse.com>
Cc: "Kirill A. Shutemov" <kirill.shutemov@linux.intel.com>
Cc: Thomas Gleixner <tglx@linutronix.de>
Cc: Tom Lendacky <thomas.lendacky@amd.com>
Cc: x86-ml <x86@kernel.org>
Link: https://lkml.kernel.org/r/20190304055546.18566-1-bhe@redhat.com
If CONFIG_OMAP4_DSS_HDMI_CEC is enabled in .config, deeper SoC idle
states are blocked because the CEC clock gets always enabled on init.
Let's fix the issue by moving the CEC clock handling to happen later in
hdmi_cec_adap_enable() as suggested by Hans Verkuil <hverkuil@xs4all.nl>.
This way the CEC clock gets only enabled when needed. This can be tested
by doing cec-ctl --playback to enable the CEC, and doing cec-ctl --clear
to disable it.
Let's also fix the typo for "divider" in the comments while at it.
Fixes: 8d7f934df8 ("omapdrm: hdmi4_cec: add OMAP4 HDMI CEC support")
Suggested-by: Hans Verkuil <hverkuil@xs4all.nl>
Cc: Hans Verkuil <hverkuil@xs4all.nl>
Cc: Jyri Sarha <jsarha@ti.com>
Cc: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
Signed-off-by: Tony Lindgren <tony@atomide.com>
Reviewed-by: Hans Verkuil <hverkuil-cisco@xs4all.nl>
Signed-off-by: Tomi Valkeinen <tomi.valkeinen@ti.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20190326151438.32414-1-tony@atomide.com
The debugfs read callback must advance ppos or users using read() on
the file descriptor will never get the EOL. This wasn't spotted before
as I was using busybox cat for testing which uses sendfile() internally
and only noticed it now when switched to cat from coreutils.
Fixes: 2a9e27408e ("gpio: mockup: rework debugfs interface")
Signed-off-by: Bartosz Golaszewski <bgolaszewski@baylibre.com>
The live_context() function returns error pointers. It never returns
NULL.
Fixes: 9c1477e83e ("drm/i915/selftests: Exercise adding requests to a full GGTT")
Signed-off-by: Dan Carpenter <dan.carpenter@oracle.com>
Reviewed-by: Mika Kuoppala <mika.kuoppala@linux.intel.com>
Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk>
Link: https://patchwork.freedesktop.org/patch/msgid/20190326050843.GA20038@kadam
(cherry picked from commit 602cbe8efc)
Signed-off-by: Jani Nikula <jani.nikula@intel.com>
Alexei Starovoitov says:
====================
pull-request: bpf-next 2019-03-26
The following pull-request contains BPF updates for your *net-next* tree.
The main changes are:
1) introduce bpf_tcp_check_syncookie() helper for XDP and tc, from Lorenz.
2) allow bpf_skb_ecn_set_ce() in tc, from Peter.
3) numerous bpf tc tunneling improvements, from Willem.
4) and other miscellaneous improvements from Adrian, Alan, Daniel, Ivan, Stanislav.
====================
Signed-off-by: David S. Miller <davem@davemloft.net>
The Linux RISC-V 32bit kernel is broken after we moved setup_vm() from
kernel/setup.c to mm/init.c because Linux RISC-V 32bit kernel by default
uses cmodel=medlow which results in a non-position-independent setup_vm().
This patch fixes Linux RISC-V 32bit kernel booting by:
1. Forcing cmodel=medany for mm/init.c
2. Moving remaing MM-related stuff va_pa_offset, pfn_base and
empty_zero_page from kernel/setup.c to mm/init.c
Further, the setup_vm() cannot handle GCC instrumentation for FTRACE so
we disable it for mm/init.c by not using "-pg" compiler flag.
Fixes: 6f1e9e946f ("RISC-V: Move setup_vm() to mm/init.c")
Suggested-by: Christoph Hellwig <hch@lst.de>
Suggested-by: Mike Rapoport <rppt@linux.ibm.com>
Signed-off-by: Anup Patel <anup.patel@wdc.com>
Reviewed-by: Mike Rapoport <rppt@linux.ibm.com>
Reviewed-by: Christoph Hellwig <hch@lst.de>
Signed-off-by: Palmer Dabbelt <palmer@sifive.com>
A memory save operation to 8-byte variable in RV32 is divided into
two sw instructions in the put_user macro. The current fixup returns
execution flow to the second sw instead of the one after it.
This patch fixes this fixup code according to the load access part.
Signed-off-by: Alan Kao<alankao@andestech.com>
Cc: Greentime Hu <greentime@andestech.com>
Cc: Vincent Chen <deanbo422@gmail.com>
Signed-off-by: Palmer Dabbelt <palmer@sifive.com>
According to HUT 1.12 usage 0xb5 from the generic desktop page is reserved
for switching between external and internal display, so let's add the
mapping.
Signed-off-by: Dmitry Torokhov <dmitry.torokhov@gmail.com>
According to HUT 1.12 usage 0x232 from the consumer page is reserved for
switching application between full screen and windowed mode, so let's add
the mapping.
Signed-off-by: Dmitry Torokhov <dmitry.torokhov@gmail.com>
According to HUTRR73 usages 0x79, 0x7a and 0x7c from the consumer page
correspond to Brightness Up/Down/Toggle keys, so let's add the mappings.
Signed-off-by: Dmitry Torokhov <dmitry.torokhov@gmail.com>
According to HUTRR77 usage 0x29f from the consumer page is reserved for
the Desktop application to present all running user’s application windows.
Linux defines KEY_SCALE to request Compiz Scale (Expose) mode, so let's
add the mapping.
Signed-off-by: Dmitry Torokhov <dmitry.torokhov@gmail.com>
According to HUTRR37 usage 0x6d from the consumer usage page corresponds
to action that selects the next available supported aspect ratio option
on a device which outputs or displays video. However KEY_ZOOM means
activate "Full Screen" mode, KEY_ASPECT_RATIO should be used instead.
Signed-off-by: Dmitry Torokhov <dmitry.torokhov@gmail.com>
We defined better names for keys to activate full screen mode or
change aspect ratio (while keeping the existing keycodes to avoid
breaking userspace), so let's use them in the document.
Signed-off-by: Dmitry Torokhov <dmitry.torokhov@gmail.com>
It is hard to say what KEY_SCREEN and KEY_ZOOM mean, but historically DVB
folks have used them to indicate switch to full screen mode. Later, they
converged on using KEY_ZOOM to switch into full screen mode and KEY)SCREEN
to control aspect ratio (see Documentation/media/uapi/rc/rc-tables.rst).
Let's commit to these uses, and define:
- KEY_FULL_SCREEN (and make KEY_ZOOM its alias)
- KEY_ASPECT_RATIO (and make KEY_SCREEN its alias)
Signed-off-by: Dmitry Torokhov <dmitry.torokhov@gmail.com>
There are many Lenovo laptops which need elan_i2c support, this patch adds
relevant IDs to the Elan driver so that touchpads are recognized.
Signed-off-by: KT Liao <kt.liao@emc.com.tw>
Cc: stable@vger.kernel.org
Signed-off-by: Dmitry Torokhov <dmitry.torokhov@gmail.com>
In cpu_to_drc_index() in the case when FW_FEATURE_DRC_INFO is absent,
we currently use of_read_property() to obtain the pointer to the array
corresponding to the property "ibm,drc-indexes". The elements of this
array are of type __be32, but are accessed without any conversion to
the OS-endianness, which is buggy on a Little Endian OS.
Fix this by using of_property_read_u32_index() accessor function to
safely read the elements of the array.
Fixes: e83636ac33 ("pseries/drc-info: Search DRC properties for CPU indexes")
Cc: stable@vger.kernel.org # v4.16+
Reported-by: Pavithra R. Prakash <pavrampu@in.ibm.com>
Signed-off-by: Gautham R. Shenoy <ego@linux.vnet.ibm.com>
Reviewed-by: Vaidyanathan Srinivasan <svaidy@linux.vnet.ibm.com>
[mpe: Make the WARN_ON a WARN_ON_ONCE so it's not retriggerable]
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
The current check for WoL on i40e is broken. Code comment says only
magic packet is supported, so only check for that.
Fixes: 540a152da7 (i40e/ixgbe/igb: fail on new WoL flag setting WAKE_MAGICSECURE)
Signed-off-by: Stefan Assmann <sassmann@kpanic.de>
Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>
The ixgbe ignores errors returned from mdiobus_register() and leaves
adapter->mii_bus non-NULL and MDIO bus state as MDIOBUS_ALLOCATED.
This triggers a BUG from mdiobus_unregister() during ixgbe_remove() call.
Fixes: 8fa10ef012 ("ixgbe: register a mdiobus")
Signed-off-by: Ivan Vecera <ivecera@redhat.com>
Tested-by: Andrew Bowers <andrewx.bowers@intel.com>
Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>
The runtime_suspend device callbacks are not supposed to save
configuration state or change the power state. Commit fb29f76cc566
("igb: Fix an issue that PME is not enabled during runtime suspend")
changed the driver to not save configuration state during runtime
suspend, however the driver callback still put the device into a
low-power state. This causes a warning in the pci pm core and results in
pci_pm_runtime_suspend not calling pci_save_state or pci_finish_runtime_suspend.
Fix this by not changing the power state either, leaving that to pci pm
core, and make the same change for suspend callback as well.
Also move a couple of defines into the appropriate header file instead
of inline in the .c file.
Fixes: fb29f76cc566 ("igb: Fix an issue that PME is not enabled during runtime suspend")
Signed-off-by: Arvind Sankar <niveditas98@gmail.com>
Reviewed-by: Kai-Heng Feng <kai.heng.feng@canonical.com>
Tested-by: Aaron Brown <aaron.f.brown@intel.com>
Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>
Some enums in ice_tx_desc_cmd_bits have a trailing /* 2 BITS */ comment,
but the value has just one bit set (ex. ICE_TX_DESC_CMD_L4T_EOFT_SCTP
has the value 0x200 (i.e. only bit 9 is set). This is confusing and
misleading. So remove the comment.
Signed-off-by: Anirudh Venkataramanan <anirudh.venkataramanan@intel.com>
Tested-by: Andrew Bowers <andrewx.bowers@intel.com>
Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>
Since the driver now hard codes the ITR granularity to 2 us in the
GLINT_CTL register the comment next to ITR_GRAN_S needs to be updated.
Signed-off-by: Brett Creeley <brett.creeley@intel.com>
Signed-off-by: Anirudh Venkataramanan <anirudh.venkataramanan@intel.com>
Tested-by: Andrew Bowers <andrewx.bowers@intel.com>
Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>
Remove some redundant text in the function header for __ice_vsi_get_qs
Signed-off-by: Anirudh Venkataramanan <anirudh.venkataramanan@intel.com>
Tested-by: Andrew Bowers <andrewx.bowers@intel.com>
Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>
Commit 0ac30ce433 ("i40e: fix up 32 bit timespec references",
2017-07-26) claims to be cleaning up references to 32-bit timespecs.
The actual contents of the commit make no sense, as it converts a call
to timespec64_add into timespec64_add_ns. This would seem ok, if (a) the
change was documented in the commit message, and (b) timespec64_add_ns
supported negative numbers.
timespec64_add_ns doesn't work with signed deltas, because the
implementation is based around iter_div_u64_rem. This change resulted in
a regression where i40e_ptp_adjtime would interpret small negative
adjustments as large positive additions, resulting in incorrect
behavior.
This commit doesn't appear to fix anything, is not well explained, and
introduces a bug, so lets just revert it.
Reverts: 0ac30ce433 ("i40e: fix up 32 bit timespec references", 2017-07-26)
Signed-off-by: Jacob Keller <jacob.e.keller@intel.com>
Reviewed-by: Arnd Bergmann <arnd@arndb.de>
Tested-by: Andrew Bowers <andrewx.bowers@intel.com>
Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>
Single statement if conditions don't need braces. Remove it.
Signed-off-by: Anirudh Venkataramanan <anirudh.venkataramanan@intel.com>
Tested-by: Andrew Bowers <andrewx.bowers@intel.com>
Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>
Commit 37bb839012 ("ice: Move common functions out of ice_main.c part
7/7") seems to have inadvertently introduced a function prototype for
ice_vsi_cfg_tc without a corresponding function implementation. Remove it.
Signed-off-by: Anirudh Venkataramanan <anirudh.venkataramanan@intel.com>
Tested-by: Andrew Bowers <andrewx.bowers@intel.com>
Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>
Currently we aren't checking for the ICE_FC_NONE case for the current
flow control mode. This is causing "Unknown" to be printed for the
current flow control method if flow control is disabled. Fix this by
adding the case for ICE_FC_NONE to print "None".
Signed-off-by: Brett Creeley <brett.creeley@intel.com>
Signed-off-by: Anirudh Venkataramanan <anirudh.venkataramanan@intel.com>
Tested-by: Andrew Bowers <andrewx.bowers@intel.com>
Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>
Currently the ice_q_vector structure and ice_ring_container structure
are taking up more space than necessary due to cache alignment holes
and unnecessary variables respectively. This is not helping the
driver's performance. The following fixes were done to improve cache
alignment, reduce wasted space, and increase performance.
1. Remove the ice_latency_range enum as it is unused.
2. Remove the latency_range variable in the ice_ring_container structure.
3. Change the size of the itr_idx in the ice_ring_container structure
from an int to an u16. This reduced the size of ice_ring_container
structure to 32 Bytes so it has no holes or padding.
4. Re-arrange the ice_q_vector structure using pahole to align
members as best as possible in regards to 64 Byte cache line size.
Signed-off-by: Brett Creeley <brett.creeley@intel.com>
Signed-off-by: Anirudh Venkataramanan <anirudh.venkataramanan@intel.com>
Tested-by: Andrew Bowers <andrewx.bowers@intel.com>
Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>
If filter already exists, do not go through error path flow but instead
continue to process rest of the function. Hence have an appropriate check
after adding MAC filters.
Signed-off-by: Preethi Banala <preethi.banala@intel.com>
Signed-off-by: Anirudh Venkataramanan <anirudh.venkataramanan@intel.com>
Tested-by: Andrew Bowers <andrewx.bowers@intel.com>
Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>
This patch fixes issue that occurs when VF is attempting to remove
default LAN/MAC address, which is programmed by the administrator.
We shouldn't return error for the call by the VF, but continue with
the remaining steps to handle MAC opcode. Also update the dev_err
message to explicitly say that VF can't change MAC programmed by PF.
Also change "mac" to "MAC" for kernel print statements in the same file.
Signed-off-by: Akeem G Abodunrin <akeem.g.abodunrin@intel.com>
Signed-off-by: Anirudh Venkataramanan <anirudh.venkataramanan@intel.com>
Tested-by: Andrew Bowers <andrewx.bowers@intel.com>
Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>
Highlights include:
Stable fixes:
- Fix nfs4_lock_state refcounting in nfs4_alloc_{lock,unlock}data()
- fix mount/umount race in nlmclnt.
- NFSv4.1 don't free interrupted slot on open
Bugfixes:
- Don't let RPC_SOFTCONN tasks time out if the transport is connected
- Fix a typo in nfs_init_timeout_values()
- Fix layoutstats handling during read failovers
- fix uninitialized variable warning
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Merge tag 'nfs-for-5.1-3' of git://git.linux-nfs.org/projects/trondmy/linux-nfs
Pull NFS client bugfixes from Trond Myklebust:
"Highlights include:
Stable fixes:
- Fix nfs4_lock_state refcounting in nfs4_alloc_{lock,unlock}data()
- fix mount/umount race in nlmclnt.
- NFSv4.1 don't free interrupted slot on open
Bugfixes:
- Don't let RPC_SOFTCONN tasks time out if the transport is connected
- Fix a typo in nfs_init_timeout_values()
- Fix layoutstats handling during read failovers
- fix uninitialized variable warning"
* tag 'nfs-for-5.1-3' of git://git.linux-nfs.org/projects/trondmy/linux-nfs:
SUNRPC: fix uninitialized variable warning
pNFS/flexfiles: Fix layoutstats handling during read failovers
NFS: Fix a typo in nfs_init_timeout_values()
SUNRPC: Don't let RPC_SOFTCONN tasks time out if the transport is connected
NFSv4.1 don't free interrupted slot on open
NFS: fix mount/umount race in nlmclnt.
NFS: Fix nfs4_lock_state refcounting in nfs4_alloc_{lock,unlock}data()
The VPINT_MBX_CTL register array must be programmed to enable VF admin
queue interrupts. Without this, VFs never get interrupts on vector 0,
and some VF drivers will fail to init.
Signed-off-by: Mitch Williams <mitch.a.williams@intel.com>
Signed-off-by: Anirudh Venkataramanan <anirudh.venkataramanan@intel.com>
Tested-by: Andrew Bowers <andrewx.bowers@intel.com>
Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>
commit 63f545ed12 ("ice: Add support for adaptive interrupt moderation")
was meant to add support for adaptive interrupt moderation but there was
an error on my part while formatting the patch, and thus only part of the
patch ended up being submitted.
This patch rectifies the error by adding the rest of the code.
Fixes: 63f545ed12 ("ice: Add support for adaptive interrupt moderation")
Signed-off-by: Anirudh Venkataramanan <anirudh.venkataramanan@intel.com>
Tested-by: Andrew Bowers <andrewx.bowers@intel.com>
Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>
Currently we check if the __ICE_PREPARED_FOR_RESET bit is set prior to
calling ice_prepare_for_reset in ice_reset_subtask(), but we aren't
checking that bit in ice_do_reset() before calling
ice_prepare_for_reset(). This is not consistent and can cause issues if
ice_prepare_for_reset() is called prior to ice_do_reset(). Fix this by
checking if the __ICE_PREPARED_FOR_RESET bit is set internal to
ice_prepare_for_reset().
Signed-off-by: Brett Creeley <brett.creeley@intel.com>
Signed-off-by: Anirudh Venkataramanan <anirudh.venkataramanan@intel.com>
Tested-by: Andrew Bowers <andrewx.bowers@intel.com>
Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>
When communicating with the AVF driver, we need to use the status codes
from virtchnl.h, not our own ice-specific codes. Without this, when an
error occurs, the VF will report nonsensical results.
NOTE: this depends on changes made to include/linux/avf/virtchnl.h by
commit bb58fd7eef ("i40e: Update status codes")
Signed-off-by: Mitch Williams <mitch.a.williams@intel.com>
Signed-off-by: Anirudh Venkataramanan <anirudh.venkataramanan@intel.com>
Tested-by: Andrew Bowers <andrewx.bowers@intel.com>
Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>
Two log messages contained newlines in the middle of the message. This
resulted in unexpected driver log output.
This patch removes the newlines to restore consistency with the rest of
the driver log messages.
Signed-off-by: Jeremiah Kyle <jeremiah.kyle@intel.com>
Signed-off-by: Anirudh Venkataramanan <anirudh.venkataramanan@intel.com>
Tested-by: Andrew Bowers <andrewx.bowers@intel.com>
Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>
Section 2.2.1 BTF_KIND_INT a bullet list was collapsed due to
text reflow in commit 9ab5305dbe ("docs/btf: reflow text to
fill up to 78 characters").
This patch correct the mistake. Also adjust next bullet list,
which is used for comparison, to get rendered the same way.
Fixes: 9ab5305dbe ("docs/btf: reflow text to fill up to 78 characters")
Link: https://www.kernel.org/doc/html/latest/bpf/btf.html#btf-kind-int
Signed-off-by: Jesper Dangaard Brouer <brouer@redhat.com>
Acked-by: Andrii Nakryiko <andriin@fb.com>
Signed-off-by: Alexei Starovoitov <ast@kernel.org>
Avoid following compiler warning on uninitialized variable
net/sunrpc/xprtsock.c: In function ‘xs_read_stream_request.constprop’:
net/sunrpc/xprtsock.c:525:10: warning: ‘read’ may be used uninitialized in this function [-Wmaybe-uninitialized]
return read;
^~~~
net/sunrpc/xprtsock.c:529:23: warning: ‘ret’ may be used uninitialized in this function [-Wmaybe-uninitialized]
return ret < 0 ? ret : read;
~~~~~~~~~~~~~~^~~~~~
Signed-off-by: Alakesh Haloi <alakesh.haloi@gmail.com>
Signed-off-by: Trond Myklebust <trond.myklebust@hammerspace.com>
Paul Chaignon says:
====================
The BPF verifier checks the maximum number of call stack frames twice,
first in the main CFG traversal (do_check) and then in a subsequent
traversal (check_max_stack_depth). If the second check fails, it logs a
'verifier bug' warning and errors out, as the number of call stack frames
should have been verified already.
However, the second check may fail without indicating a verifier bug: if
the excessive function calls reside in dead code, the main CFG traversal
may not visit them; the subsequent traversal visits all instructions,
including dead code.
This case raises the question of how invalid dead code should be treated.
The first patch implements the conservative option and rejects such code;
the second adds a test case.
====================
Signed-off-by: Alexei Starovoitov <ast@kernel.org>
