Perf reports user regs for kernel-mode samples so that samples can
be backtraced through user code. The old code was very broken in
syscall context, resulting in useless backtraces.
The new code, in contrast, is still dangerously racy, but it should
at least work most of the time.
Tested-by: Jiri Olsa <jolsa@kernel.org>
Signed-off-by: Andy Lutomirski <luto@amacapital.net>
Signed-off-by: Peter Zijlstra (Intel) <peterz@infradead.org>
Cc: Stephane Eranian <eranian@google.com>
Cc: Andrew Morton <akpm@linux-foundation.org>
Cc: chenggang.qcg@taobao.com
Cc: Wu Fengguang <fengguang.wu@intel.com>
Cc: Namhyung Kim <namhyung@gmail.com>
Cc: Mike Galbraith <efault@gmx.de>
Cc: Arjan van de Ven <arjan@linux.intel.com>
Cc: David Ahern <dsahern@gmail.com>
Cc: Linus Torvalds <torvalds@linux-foundation.org>
Link: http://lkml.kernel.org/r/243560c26ff0f739978e2459e203f6515367634d.1420396372.git.luto@amacapital.net
Signed-off-by: Ingo Molnar <mingo@kernel.org>
On x86_64, at least, task_pt_regs may be only partially initialized
in many contexts, so x86_64 should not use it without extra care
from interrupt context, let alone NMI context.
This will allow x86_64 to override the logic and will supply some
scratch space to use to make a cleaner copy of user regs.
Tested-by: Jiri Olsa <jolsa@kernel.org>
Signed-off-by: Andy Lutomirski <luto@amacapital.net>
Signed-off-by: Peter Zijlstra (Intel) <peterz@infradead.org>
Cc: Stephane Eranian <eranian@google.com>
Cc: chenggang.qcg@taobao.com
Cc: Wu Fengguang <fengguang.wu@intel.com>
Cc: Namhyung Kim <namhyung@gmail.com>
Cc: Mike Galbraith <efault@gmx.de>
Cc: Arjan van de Ven <arjan@linux.intel.com>
Cc: David Ahern <dsahern@gmail.com>
Cc: Arnaldo Carvalho de Melo <acme@kernel.org>
Cc: Catalin Marinas <catalin.marinas@arm.com>
Cc: Jean Pihet <jean.pihet@linaro.org>
Cc: Linus Torvalds <torvalds@linux-foundation.org>
Cc: Mark Salter <msalter@redhat.com>
Cc: Russell King <linux@arm.linux.org.uk>
Cc: Will Deacon <will.deacon@arm.com>
Cc: linux-arm-kernel@lists.infradead.org
Link: http://lkml.kernel.org/r/e431cd4c18c2e1c44c774f10758527fb2d1025c4.1420396372.git.luto@amacapital.net
Signed-off-by: Ingo Molnar <mingo@kernel.org>
Stephane reported that the PEBS fixup was broken by the recent commit to
the instruction decoder. The thing had an off-by-one which resulted in
not being able to decode the last instruction and always bail.
Reported-by: Stephane Eranian <eranian@google.com>
Fixes: 6ba48ff46f ("x86: Remove arbitrary instruction size limit in instruction decoder")
Signed-off-by: Peter Zijlstra (Intel) <peterz@infradead.org>
Cc: stable@vger.kernel.org # 3.18
Cc: <ak@linux.intel.com>
Cc: Jiri Olsa <jolsa@redhat.com>
Cc: Liang Kan <kan.liang@intel.com>
Cc: Arnaldo Carvalho de Melo <acme@redhat.com>
Cc: Dave Hansen <dave.hansen@linux.intel.com>
Cc: Jim Keniston <jkenisto@us.ibm.com>
Cc: Linus Torvalds <torvalds@linux-foundation.org>
Cc: Masami Hiramatsu <masami.hiramatsu.pt@hitachi.com>
Link: http://lkml.kernel.org/r/20141216104614.GV3337@twins.programming.kicks-ass.net
Signed-off-by: Ingo Molnar <mingo@kernel.org>
. Free callchains when hist entries are deleted, plugging a massive leak in
'top -g', where hist_entries (and its callchains) are decayed over time. (Namhyung Kim)
. Fix segfault when showing callchain in the hists browser (report & top) (Namhyung Kim)
. Fix children sort key behavior, and also the 'perf test 32' test that
was failing due to reliance on undefined behaviour (Namhyung Kim)
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
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Merge tag 'perf-urgent-for-mingo' of git://git.kernel.org/pub/scm/linux/kernel/git/acme/linux into perf/urgent
Pull perf/urgent fixes from Arnaldo Carvalho de Melo:
- Free callchains when hist entries are deleted, plugging a massive leak in
'top -g', where hist_entries (and its callchains) are decayed over time. (Namhyung Kim)
- Fix segfault when showing callchain in the hists browser (report & top) (Namhyung Kim)
- Fix children sort key behavior, and also the 'perf test 32' test that
was failing due to reliance on undefined behaviour (Namhyung Kim)
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
Signed-off-by: Ingo Molnar <mingo@kernel.org>
When perf report on TUI shows callchain it checks first node has
siblings to determine whether it needs to print percentage value.
But it missed a case that first node is NULL. So sometimes it segfaults
like below:
$ perf top -g
perf: Segmentation fault
-------- backtrace --------
perf[0x4fcefb]
/usr/lib/libc.so.6(+0x33b20)[0x7f2a35839b20]
perf(rb_next+0x8)[0x47d3d8]
perf[0x4f6058]
perf[0x4f833b]
perf[0x4f8610]
perf[0x4f209e]
perf(ui_browser__run+0x3a)[0x4f2e6a]
perf[0x4f94ee]
perf(perf_evlist__tui_browse_hists+0x94)[0x4fbbf4]
perf[0x444d10]
/usr/lib/libpthread.so.0(+0x7314)[0x7f2a37070314]
/usr/lib/libc.so.6(clone+0x6d)[0x7f2a358ee5bd]
$ addr2line -e `which perf` 0x4f6058
/home/namhyung/project/linux/tools/perf/ui/browsers/hists.c:553
I don't know why the backtrace didn't print some symbols..
Signed-off-by: Namhyung Kim <namhyung@kernel.org>
Fixes: 4087d11cd9 ("perf hists browser: Print overhead percent value for first-level callchain")
Cc: Adrian Hunter <adrian.hunter@intel.com>
Cc: Andi Kleen <andi@firstfloor.org>
Cc: Frederic Weisbecker <fweisbec@gmail.com>
Cc: Ingo Molnar <mingo@kernel.org>
Cc: Jiri Olsa <jolsa@redhat.com>
Cc: Peter Zijlstra <a.p.zijlstra@chello.nl>
Cc: Stephane Eranian <eranian@google.com>
Link: http://lkml.kernel.org/r/1419401076-21700-1-git-send-email-namhyung@kernel.org
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
Markus reported that "perf top -g" can leak ~300MB per second on his
machine. This is partly because it missed to free callchains when hist
entries are deleted. Fix it.
Reported-by: Markus Trippelsdorf <markus@trippelsdorf.de>
Signed-off-by: Namhyung Kim <namhyung@kernel.org>
Cc: David Ahern <dsahern@gmail.com>
Cc: Frederic Weisbecker <fweisbec@gmail.com>
Cc: Ingo Molnar <mingo@redhat.com>
Cc: Markus Trippelsdorf <markus@trippelsdorf.de>
Cc: Paul Mackerras <paulus@samba.org>
Cc: Peter Zijlstra <a.p.zijlstra@chello.nl>
Link: http://lkml.kernel.org/r/20141230053813.GD6081@sejong
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
When perf report --children resorts output fields, it tries to put
caller above the callee. But this was only meaningful for a same thread
and doing this requires callchain enabled. So fix its check before
comparing the callchain depth.
This also changes the hist accumulation tests: In test 3, xmalloc in
bash thread should be above than other perf threads due to alphabetical
order of comm string. Also it's under page_fault in bash thread since
alphabetical order of dso name. The sys_perf_event_open in perf thread
is put on the last line since it's self overhead is 0.
In test 4, the sys_perf_event_open is put above other perf entries that
have same children overhead since its callchain depth is smaller.
Signed-off-by: Namhyung Kim <namhyung@kernel.org>
Cc: Adrian Hunter <adrian.hunter@intel.com>
Cc: David Ahern <dsahern@gmail.com>
Cc: Ingo Molnar <mingo@kernel.org>
Cc: Jiri Olsa <jolsa@redhat.com>
Cc: Peter Zijlstra <a.p.zijlstra@chello.nl>
Link: http://lkml.kernel.org/r/1419309381-2593-1-git-send-email-namhyung@kernel.org
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
- 'perf probe' should fall back to find probe point in symbols when failing
to do so in a debuginfo file (Masami Hiramatsu)
- Fix 'perf probe' crash in dwarf_getcfi_elf (Namhyung Kim)
- Fix shell completion with 'perf list' --raw-dump option (Taesoo Kim)
- Fix 'perf diff' to sort by baseline field by default (Namhyung Kim)
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
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Merge tag 'perf-urgent-for-mingo' of git://git.kernel.org/pub/scm/linux/kernel/git/acme/linux into perf/urgent
Pull perf/urgent fixes from Arnaldo Carvalho de Melo:
"
- 'perf probe' should fall back to find probe point in symbols when failing
to do so in a debuginfo file (Masami Hiramatsu)
- Fix 'perf probe' crash in dwarf_getcfi_elf (Namhyung Kim)
- Fix shell completion with 'perf list' --raw-dump option (Taesoo Kim)
- Fix 'perf diff' to sort by baseline field by default (Namhyung Kim)
"
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
Signed-off-by: Ingo Molnar <mingo@kernel.org>
David reported that perf can segfault when adding an uprobe event like
this:
$ perf probe -x /lib64/libc-2.14.90.so -a 'malloc size=%di'
(gdb) bt
#0 parse_eh_frame_hdr (hdr=0x0, hdr_size=2596, hdr_vaddr=71788,
ehdr=0x7fffffffd390, eh_frame_vaddr=
0x7fffffffd378, table_entries=0x8808d8, table_encoding=0x8808e0 "") at
dwarf_getcfi_elf.c:79
#1 0x000000385f81615a in getcfi_scn_eh_frame (hdr_vaddr=71788,
hdr_scn=0x8839b0, shdr=0x7fffffffd2f0, scn=<optimized out>,
ehdr=0x7fffffffd390, elf=0x882b30) at dwarf_getcfi_elf.c:231
#2 getcfi_shdr (ehdr=0x7fffffffd390, elf=0x882b30) at dwarf_getcfi_elf.c:283
#3 dwarf_getcfi_elf (elf=0x882b30) at dwarf_getcfi_elf.c:309
#4 0x00000000004d5bac in debuginfo__find_probes (pf=0x7fffffffd4f0,
dbg=Unhandled dwarf expression opcode 0xfa) at util/probe-finder.c:993
#5 0x00000000004d634a in debuginfo__find_trace_events (dbg=0x880840,
pev=<optimized out>, tevs=0x880f88, max_tevs=<optimized out>) at
util/probe-finder.c:1200
#6 0x00000000004aed6b in try_to_find_probe_trace_events (target=0x881b20
"/lib64/libpthread-2.14.90.so",
max_tevs=128, tevs=0x880f88, pev=0x859b30) at util/probe-event.c:482
#7 convert_to_probe_trace_events (target=0x881b20
"/lib64/libpthread-2.14.90.so", max_tevs=128, tevs=0x880f88,
pev=0x859b30) at util/probe-event.c:2356
#8 add_perf_probe_events (pevs=<optimized out>, npevs=1, max_tevs=128,
target=0x881b20 "/lib64/libpthread-2.14.90.so", force_add=false) at
util/probe-event.c:2391
#9 0x000000000044014f in __cmd_probe (argc=<optimized out>,
argv=0x7fffffffe2f0, prefix=Unhandled dwarf expression opcode 0xfa) at
at builtin-probe.c:488
#10 0x0000000000440313 in cmd_probe (argc=5, argv=0x7fffffffe2f0,
prefix=<optimized out>) at builtin-probe.c:506
#11 0x000000000041d133 in run_builtin (p=0x805680, argc=5,
argv=0x7fffffffe2f0) at perf.c:341
#12 0x000000000041c8b2 in handle_internal_command (argv=<optimized out>,
argc=<optimized out>) at perf.c:400
#13 run_argv (argv=<optimized out>, argcp=<optimized out>) at perf.c:444
#14 main (argc=5, argv=0x7fffffffe2f0) at perf.c:559
And I found a related commit (5704c8c4fa71 "getcfi_scn_eh_frame: Don't
crash and burn when .eh_frame bits aren't there.") in elfutils that can
lead to a unexpected crash like this. To safely use the function, it
needs to check the .eh_frame section is a PROGBITS type.
Reported-by: David Ahern <dsahern@gmail.com>
Tested-by: David Ahern <dsahern@gmail.com>
Signed-off-by: Namhyung Kim <namhyung@kernel.org>
Acked-by: Masami Hiramatsu <masami.hiramatsu.pt@hitachi.com>
Cc: David Ahern <dsahern@gmail.com>
Cc: Mark Wielaard <mjw@redhat.com>
Cc: Masami Hiramatsu <masami.hiramatsu.pt@hitachi.com>
Link: http://lkml.kernel.org/r/20141230090533.GH6081@sejong
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
Fix to fall back to find a probe point in symbols if perf fails to find
it in debuginfo.
This can happen when the target function is an alias of another
function. Such alias doesn't have an entry in debuginfo but in symbols.
David Ahern reported this problem in https://lkml.org/lkml/2014/12/29/355
I ensured the problem and deeper investigation discovers it.
-----
eu-readelf --debug-dump=info /usr/lib/debug/lib/x86_64-linux-gnu/libc-2.19.so | grep \"malloc\" -A6
name (strp) "malloc"
decl_file (data1) 25
decl_line (data2) 466
prototyped (flag_present)
type (ref4) [ 81b5]
declaration (flag_present)
[ 8f58] formal_parameter
--
name (strp) "malloc"
decl_file (data1) 23
decl_line (data2) 466
prototyped (flag_present)
type (ref4) [ 9f4a]
declaration (flag_present)
sibling (ref4) [ bb29]
...
-----
All these entires have no instances (all of them are declarations)
This is why the perf probe failed to find it in debuginfo.
However, there are some malloc instances in symbols.
-----
eu-readelf --symbols /usr/lib/debug/lib/x86_64-linux-gnu/libc-2.19.so | grep malloc$
1181: 0000000000080700 5332 FUNC LOCAL DEFAULT 12 _int_malloc
4537: 00000000000831d0 339 FUNC LOCAL DEFAULT 12 __GI___libc_malloc
5545: 00000000000831d0 339 FUNC LOCAL DEFAULT 12 __malloc
6063: 00000000000831d0 339 FUNC GLOBAL DEFAULT 12 malloc
7302: 00000000000831d0 339 FUNC GLOBAL DEFAULT 12 __libc_malloc
-----
As you an see, malloc and __libc_malloc have same address, and actually
__libc_malloc has an entry in debuginfo. So you can set up a probe on
__libc_malloc.
To fix this problem shortly, perf probe simply falls back to find probe
point(malloc) in symbols if it is not found in debuginfo.
Reported-by: David Ahern <dsahern@gmail.com>
Signed-off-by: Masami Hiramatsu <masami.hiramatsu.pt@hitachi.com>
Acked-by: Namhyung Kim <namhyung@kernel.org>
Cc: David Ahern <dsahern@gmail.com>
Cc: Ingo Molnar <mingo@kernel.org>
Cc: Namhyung Kim <namhyung@kernel.org>
Cc: yrl.pp-manager.tt@hitachi.com
Link: http://lkml.kernel.org/r/20141231062747.2087.80961.stgit@localhost.localdomain
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
User visible:
- Show progress bar in more places while doing histogram processing
in the hists browser (Namhyung Kim)
- Print backtrace symbols when segfault occurs in 'report' (Namhyung Kim)
Infrastructure:
- Append callchains only when requested (Namhyung Kim)
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
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Merge tag 'perf-urgent-for-mingo' of git://git.kernel.org/pub/scm/linux/kernel/git/acme/linux into perf/urgent
Pull perf/urgent fixes from Arnaldo Carvalho de Melo:
User visible fixes:
- Show progress bar in more places while doing histogram processing
in the hists browser (Namhyung Kim)
- Print backtrace symbols when segfault occurs in 'report' (Namhyung Kim)
Infrastructure fixes:
- Append callchains only when requested (Namhyung Kim)
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
Signed-off-by: Ingo Molnar <mingo@kernel.org>
Pull audit fix from Paul Moore:
"One audit patch to resolve a panic/oops when recording filenames in
the audit log, see the mail archive link below.
The fix isn't as nice as I would like, as it involves an allocate/copy
of the filename, but it solves the problem and the overhead should
only affect users who have configured audit rules involving file
names.
We'll revisit this issue with future kernels in an attempt to make
this suck less, but in the meantime I think this fix should go into
the next release of v3.19-rcX.
[ https://marc.info/?t=141986927600001&r=1&w=2 ]"
* 'upstream' of git://git.infradead.org/users/pcmoore/audit:
audit: create private file name copies when auditing inodes
Pull crypto fix from Herbert Xu:
"Fix a use-after-free crash in the user-space crypto API"
* git://git.kernel.org/pub/scm/linux/kernel/git/herbert/crypto-2.6:
crypto: af_alg - fix backlog handling
Follow aa0d532605 ("ia64: Use preempt_schedule_irq") and use
preempt_schedule_irq instead of enabling/disabling interrupts and
messing around with PREEMPT_ACTIVE in the nios2 low-level preemption
code ourselves. Also get rid of the now needless re-check for
TIF_NEED_RESCHED, preempt_schedule_irq will already take care of
rescheduling.
This also fixes the following build error when building with
CONFIG_PREEMPT:
arch/nios2/kernel/built-in.o: In function `need_resched':
arch/nios2/kernel/entry.S:374: undefined reference to `PREEMPT_ACTIVE'
Cc: Thomas Gleixner <tglx@linutronix.de>
Signed-off-by: Tobias Klauser <tklauser@distanz.ch>
Acked-by: Ley Foon Tan <lftan@altera.com>
This patch initializes the mmu field of the cpuinfo structure to the
value supplied by the devicetree.
Signed-off-by: Walter Goossens <waltergoossens@home.nl>
Acked-by: Ley Foon Tan <lftan@altera.com>
A very small set of fixes for 3.19, as everyone was out. The clocksource
patch was something I missed for the merge window after the change that
broke arm64 was merged through arm-soc. The other two patches are
a fix for an undetected merge problem in mvebu and a defconfig change
to make some exynos boards work with the normal multi_v7_defconfig.
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Merge tag 'fixes-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/arm/arm-soc
Pull ARM SoC fixes from Arnd Bergmann:
"A very small set of fixes for 3.19, as everyone was out.
The clocksource patch was something I missed for the merge window
after the change that broke arm64 was merged through arm-soc. The
other two patches are a fix for an undetected merge problem in mvebu
and a defconfig change to make some exynos boards work with the normal
multi_v7_defconfig"
* tag 'fixes-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/arm/arm-soc:
Add USB_EHCI_EXYNOS to multi_v7_defconfig
ARM: mvebu: Fix pinctrl configuration for Armada 370 DB
clocksource: arch_timer: Only use the virtual counter (CNTVCT) on arm64
Pull input layer fixes from Dmitry Torokhov:
"Fixes for v7 protocol for ALPS devices and few other driver fixes.
Also users can request input events to be stamped with boot time
timestamps, in addition to real and monotonic timestamps"
* 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/dtor/input:
Input: hil_kbd - fix incorrect use of init_completion
Input: alps - v7: document the v7 touchpad packet protocol
Input: alps - v7: fix finger counting for > 2 fingers on clickpads
Input: alps - v7: sometimes a single touch is reported in mt[1]
Input: alps - v7: ignore new packets
Input: evdev - add CLOCK_BOOTTIME support
Input: psmouse - expose drift duration for IBM trackpoints
Input: stmpe - bias keypad columns properly
Input: stmpe - enforce device tree only mode
mfd: stmpe: add pull up/down register offsets for STMPE
Input: optimize events_per_packet count calculation
Input: edt-ft5x06 - fixed a macro coding style issue
Input: gpio_keys - replace timer and workqueue with delayed workqueue
Input: gpio_keys - allow separating gpio and irq in device tree
This reverts commit 24a0aa212e.
It's causing severe userspace breakage. Namely, all the utilities from
wireless-utils which are relying on CONFIG_WEXT (which means tools like
'iwconfig', 'iwlist', etc) are not working anymore. There is a 'iw'
utility in newer wireless-tools, which is supposed to be a replacement
for all the "deprecated" binaries, but it's far away from being
massively adopted.
Please see [1] for example of the userspace breakage this is causing.
In addition to that, Larry Finger reports [2] that this patch is also
causing ipw2200 driver being impossible to build.
To me this clearly shows that CONFIG_WEXT is far, far away from being
"deprecated enough" to be removed.
[1] http://thread.gmane.org/gmane.linux.kernel/1857010
[2] http://thread.gmane.org/gmane.linux.network/343688
Signed-off-by: Jiri Kosina <jkosina@suse.cz>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Pull networking fixes from David Miller:
1) Fix double SKB free in bluetooth 6lowpan layer, from Jukka Rissanen.
2) Fix receive checksum handling in enic driver, from Govindarajulu
Varadarajan.
3) Fix NAPI poll list corruption in virtio_net and caif_virtio, from
Herbert Xu. Also, add code to detect drivers that have this mistake
in the future.
4) Fix doorbell endianness handling in mlx4 driver, from Amir Vadai.
5) Don't clobber IP6CB() before xfrm6_policy_check() is called in TCP
input path,f rom Nicolas Dichtel.
6) Fix MPLS action validation in openvswitch, from Pravin B Shelar.
7) Fix double SKB free in vxlan driver, also from Pravin.
8) When we scrub a packet, which happens when we are switching the
context of the packet (namespace, etc.), we should reset the
secmark. From Thomas Graf.
9) ->ndo_gso_check() needs to do more than return true/false, it also
has to allow the driver to clear netdev feature bits in order for
the caller to be able to proceed properly. From Jesse Gross.
* git://git.kernel.org/pub/scm/linux/kernel/git/davem/net: (62 commits)
genetlink: A genl_bind() to an out-of-range multicast group should not WARN().
netlink/genetlink: pass network namespace to bind/unbind
ne2k-pci: Add pci_disable_device in error handling
bonding: change error message to debug message in __bond_release_one()
genetlink: pass multicast bind/unbind to families
netlink: call unbind when releasing socket
netlink: update listeners directly when removing socket
genetlink: pass only network namespace to genl_has_listeners()
netlink: rename netlink_unbind() to netlink_undo_bind()
net: Generalize ndo_gso_check to ndo_features_check
net: incorrect use of init_completion fixup
neigh: remove next ptr from struct neigh_table
net: xilinx: Remove unnecessary temac_property in the driver
net: phy: micrel: use generic config_init for KSZ8021/KSZ8031
net/core: Handle csum for CHECKSUM_COMPLETE VXLAN forwarding
openvswitch: fix odd_ptr_err.cocci warnings
Bluetooth: Fix accepting connections when not using mgmt
Bluetooth: Fix controller configuration with HCI_QUIRK_INVALID_BDADDR
brcmfmac: Do not crash if platform data is not populated
ipw2200: select CFG80211_WEXT
...
Currently we enable Exynos devices in the multi v7 defconfig, however, when
testing on my ODROID-U3, I noticed that USB was not working. Enabling this
option causes USB to work, which enables networking support as well since the
ODROID-U3 has networking on the USB bus.
[arnd] Support for odroid-u3 was added in 3.10, so it would be nice to
backport this fix at least that far.
Signed-off-by: Steev Klimaszewski <steev@gentoo.org>
Cc: stable@vger.kernel.org # 3.10
Signed-off-by: Arnd Bergmann <arnd@arndb.de>
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Merge tag 'mvebu-fixes-3.19' of git://git.infradead.org/linux-mvebu into fixes
Pull "Fixes for 3.19" from Andrew Lunn:
Jason is taking a back seat this cycle and i'm doing all the patch
wrangling for mvebu.
* tag 'mvebu-fixes-3.19' of git://git.infradead.org/linux-mvebu:
ARM: mvebu: Fix pinctrl configuration for Armada 370 DB
Also update to Linux 3.19-rc1, which this was based on.
Signed-off-by: Arnd Bergmann <arnd@arndb.de>
Unfortunately, while commit 4a928436 ("audit: correctly record file
names with different path name types") fixed a problem where we were
not recording filenames, it created a new problem by attempting to use
these file names after they had been freed. This patch resolves the
issue by creating a copy of the filename which the audit subsystem
frees after it is done with the string.
At some point it would be nice to resolve this issue with refcounts,
or something similar, instead of having to allocate/copy strings, but
that is almost surely beyond the scope of a -rcX patch so we'll defer
that for later. On the plus side, only audit users should be impacted
by the string copying.
Reported-by: Toralf Foerster <toralf.foerster@gmx.de>
Signed-off-by: Paul Moore <pmoore@redhat.com>
After the commit ef691ff48b (OMAPDSS: DT: Get source endpoint by
matching reg-id) we look for the SDI output using the port number.
However, the SDI driver doesn't set the port number, which causes the
SDI display to not initialize.
Fix this by setting the SDI port number to 1. We use a hardcoded value,
as SDI was used only on OMAP3 and it's always port number 1 there.
Reported-by: Aaro Koskinen <aaro.koskinen@iki.fi>
Reported-by: Pavel Machek <pavel@ucw.cz>
Signed-off-by: Tomi Valkeinen <tomi.valkeinen@ti.com>
fb_deferred_io_fsync() returns the value of schedule_delayed_work() as
an error code, but schedule_delayed_work() does not return an error. It
returns true/false depending on whether the work was already queued.
Fix this by ignoring the return value of schedule_delayed_work().
Signed-off-by: Tomi Valkeinen <tomi.valkeinen@ti.com>
Cc: stable@vger.kernel.org
Pull CIFS fixes from Steve French:
"A set of three minor cifs fixes"
* 'for-linus' of git://git.samba.org/sfrench/cifs-2.6:
cifs: make new inode cache when file type is different
Fix signed/unsigned pointer warning
Convert MessageID in smb2_hdr to LE
Pull UDF & isofs fixes from Jan Kara:
"A couple of UDF fixes of handling of corrupted media and one iso9660
fix of the same"
* 'for_linus' of git://git.kernel.org/pub/scm/linux/kernel/git/jack/linux-fs:
udf: Reduce repeated dereferences
udf: Check component length before reading it
udf: Check path length when reading symlink
udf: Verify symlink size before loading it
udf: Verify i_size when loading inode
isofs: Fix unchecked printing of ER records
- Fix for a potential NULL pointer dereference in the cpufreq
core due to an initialization race condition (Ethan Zhao).
- Fixes for abuse of the OPP (Operating Performance Points) API
related to RCU and other minor issues in the OPP library and
the cpufreq-dt driver (Dmitry Torokhov).
- cpuidle governors cleanup making them measure idle duration in
a better way without using the CPUIDLE_FLAG_TIME_INVALID flag
which allows that flag to be dropped from the ACPI cpuidle driver
and from the core too (Len Brown).
- New ACPI backlight blacklist entries for Samsung machines
without a working native backlight interface that need to
use the ACPI backlight instead (Aaron Lu).
- New CPU IDs of future Intel Xeon CPUs for the Intel RAPL power
capping driver (Jacob Pan).
- Generic power domains framework modification to export the
of_genpd_get_from_provider() function to modular drivers that
will allow future driver modifications to be based on the mainline
(Amit Daniel Kachhap).
- Two fixes for the cpupower tool (Michal Privoznik, Prarit Bhargava).
/
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Merge tag 'pm+acpi-3.19-rc3' of git://git.kernel.org/pub/scm/linux/kernel/git/rafael/linux-pm
Pull power management and ACPI material from Rafael J Wysocki:
"These are fixes (operating performance points library, cpufreq-dt
driver, cpufreq core, ACPI backlight, cpupower tool), cleanups
(cpuidle), new processor IDs for the RAPL (Running Average Power
Limit) power capping driver, and a modification of the generic power
domains framework allowing modular drivers to call one of its helper
functions.
Specifics:
- Fix for a potential NULL pointer dereference in the cpufreq core
due to an initialization race condition (Ethan Zhao).
- Fixes for abuse of the OPP (Operating Performance Points) API
related to RCU and other minor issues in the OPP library and the
cpufreq-dt driver (Dmitry Torokhov).
- cpuidle governors cleanup making them measure idle duration in a
better way without using the CPUIDLE_FLAG_TIME_INVALID flag which
allows that flag to be dropped from the ACPI cpuidle driver and
from the core too (Len Brown).
- New ACPI backlight blacklist entries for Samsung machines without a
working native backlight interface that need to use the ACPI
backlight instead (Aaron Lu).
- New CPU IDs of future Intel Xeon CPUs for the Intel RAPL power
capping driver (Jacob Pan).
- Generic power domains framework modification to export the
of_genpd_get_from_provider() function to modular drivers that will
allow future driver modifications to be based on the mainline (Amit
Daniel Kachhap).
- Two fixes for the cpupower tool (Michal Privoznik, Prarit
Bhargava)"
* tag 'pm+acpi-3.19-rc3' of git://git.kernel.org/pub/scm/linux/kernel/git/rafael/linux-pm:
ACPI / video: Add some Samsung models to disable_native_backlight list
tools / cpupower: Fix no idle state information return value
tools / cpupower: Correctly detect if running as root
cpufreq: fix a NULL pointer dereference in __cpufreq_governor()
cpufreq-dt: defer probing if OPP table is not ready
PM / OPP: take RCU lock in dev_pm_opp_get_opp_count
PM / OPP: fix warning in of_free_opp_table()
PM / OPP: add some lockdep annotations
powercap / RAPL: add IDs for future Xeon CPUs
PM / Domains: Export of_genpd_get_from_provider function
cpuidle / ACPI: remove unused CPUIDLE_FLAG_TIME_INVALID
cpuidle: ladder: Better idle duration measurement without using CPUIDLE_FLAG_TIME_INVALID
cpuidle: menu: Better idle duration measurement without using CPUIDLE_FLAG_TIME_INVALID
Users can request to bind to arbitrary multicast groups, so warning
when the requested group number is out of range is not appropriate.
And with the warning removed, and the 'err' variable properly given
an initial value, we can remove 'found' altogether.
Reported-by: Sedat Dilek <sedat.dilek@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
A few driver specific fixes here, the DMA burst size increase in the
spfi driver is a fix to make the hardware happier in some situations.
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Merge tag 'spi-v3.19-rc2' of git://git.kernel.org/pub/scm/linux/kernel/git/broonie/spi
Pull spi fixes from Mark Brown:
"A few driver specific fixes here, the DMA burst size increase in the
spfi driver is a fix to make the hardware happier in some situations"
* tag 'spi-v3.19-rc2' of git://git.kernel.org/pub/scm/linux/kernel/git/broonie/spi:
spi: img-spfi: Increase DMA burst size
spi: img-spfi: Enable controller before starting TX DMA
spi: sh-msiof: Add runtime PM lock in initializing
One fix here, a fix for the voltage mapping on one of the s2mps11
regulators which broke systems using it including apparently the Gear 2
smartwatches.
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Merge tag 'regulator-v3.19-rc2' of git://git.kernel.org/pub/scm/linux/kernel/git/broonie/regulator
Pull one regulator fix from Mark Brown:
"One fix here, a fix for the voltage mapping on one of the s2mps11
regulators which broke systems using it including apparently the
Gear 2 smartwatches"
* tag 'regulator-v3.19-rc2' of git://git.kernel.org/pub/scm/linux/kernel/git/broonie/regulator:
regulator: s2mps11: Fix dw_mmc failure on Gear 2
- Fix selection of buswidth for mmc hosts supporting 1-bit only.
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Merge tag 'mmc-v3.19-2' of git://git.linaro.org/people/ulf.hansson/mmc
Pull one MMC fix from Ulf Hansson:
"MMC core:
- Fix selection of buswidth for mmc hosts supporting 1-bit only"
* tag 'mmc-v3.19-2' of git://git.linaro.org/people/ulf.hansson/mmc:
mmc: core: stop trying to switch width when only one bit is supported
Pull thermal management updates from Zhang Rui:
"First of all, the most important change is the thermal cpu cooling
fixes. The major fix here is to have proper sequencing between
cpufreq layer and thermal cpu cooling registration. A take away of
this fix is an improvement in the thermal drivers code. Thermal
drivers that require cpu cooling do not need to check for cpufreq
layer. The requirement now is to propagate the error code, if any,
while registering cpu cooling device. Thanks to Viresh for
implementing the required CPUfreq changes.
Second, a new driver is introduced for int340x processor thermal
device. Given that int340x thermal is disabled by default, and this
processor thermal device is only available on limited platforms, plus
the driver does nothing but exposes some thermal limitation
information for user space to use, thus I think it is safe to include
it in this pull request after missing 3.19-rc2.
Specifics:
- Thermal cpu cooling fixes and cleanups.
- introduce INT340X processor thermal reporting device driver.
- several small fixes and cleanups for int340x thermal drivers"
* 'next' of git://git.kernel.org/pub/scm/linux/kernel/git/rzhang/linux: (43 commits)
Thermal/int340x/int3403: Free acpi notification handler
Thermal/int340x/processor_thermal: Fix memory leak
Thermal/int340x/int3403: Fix memory leak
thermal: int340x: Introduce processor reporting device
thermal: int340x_thermal: drop owner assignment from platform_drivers
thermal: drop owner assignment from platform_drivers
thermal: cpu_cooling: document node in struct cpufreq_cooling_device
thermal/powerclamp: add ids for future xeon cpus
Thermal/int340x: Handle properly the case when _trt or _art acpi entry is missing
thermal: cpu_cooling: return ERR_PTR() for !CPU_THERMAL or !THERMAL_OF
thermal: cpu_cooling: small memory leak on error
thermal: ti-soc-thermal: Do not print error message in the EPROBE_DEFER case
thermal: db8500: Do not print error message in the EPROBE_DEFER case
thermal: imx: Do not print error message in the EPROBE_DEFER case
thermal: Fix cdev registration with THERMAL_NO_LIMIT on 64bit
drivers: thermal: Remove ARCH_HAS_BANDGAP dependency for samsung
thermal:core:fix: Check return code of the ->get_max_state() callback
thermal: cpu_cooling: update copyright tags
thermal: cpu_cooling: Use cpufreq_dev->freq_table for finding level/freq
thermal: cpu_cooling: Store frequencies in descending order
...
Commit 2457aec637 ("mm: non-atomically mark page accessed during page
cache allocation where possible") has added a separate parameter for
specifying gfp mask for radix tree allocations.
Not only this is less than optimal from the API point of view because it
is error prone, it is also buggy currently because
grab_cache_page_write_begin is using GFP_KERNEL for radix tree and if
fgp_flags doesn't contain FGP_NOFS (mostly controlled by fs by
AOP_FLAG_NOFS flag) but the mapping_gfp_mask has __GFP_FS cleared then
the radix tree allocation wouldn't obey the restriction and might
recurse into filesystem and cause deadlocks. This is the case for most
filesystems unfortunately because only ext4 and gfs2 are using
AOP_FLAG_NOFS.
Let's simply remove radix_gfp_mask parameter because the allocation
context is same for both page cache and for the radix tree. Just make
sure that the radix tree gets only the sane subset of the mask (e.g. do
not pass __GFP_WRITE).
Long term it is more preferable to convert remaining users of
AOP_FLAG_NOFS to use mapping_gfp_mask instead and simplify this
interface even further.
Reported-by: Dave Chinner <david@fromorbit.com>
Signed-off-by: Michal Hocko <mhocko@suse.cz>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
* pm-domains:
PM / Domains: Export of_genpd_get_from_provider function
* powercap:
powercap / RAPL: add IDs for future Xeon CPUs
* pm-tools:
tools / cpupower: Fix no idle state information return value
tools / cpupower: Correctly detect if running as root
* pm-cpufreq:
cpufreq: fix a NULL pointer dereference in __cpufreq_governor()
cpufreq-dt: defer probing if OPP table is not ready
* pm-cpuidle:
cpuidle / ACPI: remove unused CPUIDLE_FLAG_TIME_INVALID
cpuidle: ladder: Better idle duration measurement without using CPUIDLE_FLAG_TIME_INVALID
cpuidle: menu: Better idle duration measurement without using CPUIDLE_FLAG_TIME_INVALID
mmc_select_bus_width() will try to switch to MMC_BUS_WIDTH_4 even if
MMC_CAP_4_BIT_DATA and MMC_CAP_8_BIT_DATA are not set in host->caps.
Return as soon as possible when those flags are not set
Fixes: 577fb13199 (mmc: rework selection of bus speed mode)
Signed-off-by: Alexandre Belloni <alexandre.belloni@free-electrons.com>
Cc: <stable@vger.kernel.org> # 3.17
Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>
If the probe of an fb driver has been deferred due to missing
dependencies, and the probe is later ran when a module is loaded, the
fbdev framework will try to find a logo to use.
However, the logos are __initdata, and have already been freed. This
causes sometimes page faults, if the logo memory is not mapped,
sometimes other random crashes as the logo data is invalid, and
sometimes nothing, if the fbdev decides to reject the logo (e.g. the
random value depicting the logo's height is too big).
This patch adds a late_initcall function to mark the logos as freed. In
reality the logos are freed later, and fbdev probe may be ran between
this late_initcall and the freeing of the logos. In that case we will
miss drawing the logo, even if it would be possible.
Signed-off-by: Tomi Valkeinen <tomi.valkeinen@ti.com>
Cc: stable@vger.kernel.org
The regulator_disable() doesn't accept NULL pointers.
Signed-off-by: Dan Carpenter <dan.carpenter@oracle.com>
Signed-off-by: Tomi Valkeinen <tomi.valkeinen@ti.com>
HDMI hardware parameters structs for OMAP4 and OMAP5 contained two
initializers for 'clkdco_max'. The first one was a remnant with wrong
value.
Remove the extra initializer entries.
Signed-off-by: Tomi Valkeinen <tomi.valkeinen@ti.com>
On top of this, add a couple of WARN_ONs and stop spamming dmesg on
pretty much every boot of a virtual machine.
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Merge tag 'for-linus' of git://git.kernel.org/pub/scm/virt/kvm/kvm
Pull KVM fixes from Paolo Bonzini:
"The important fixes are for two bugs introduced by the merge window.
On top of this, add a couple of WARN_ONs and stop spamming dmesg on
pretty much every boot of a virtual machine"
* tag 'for-linus' of git://git.kernel.org/pub/scm/virt/kvm/kvm:
kvm: warn on more invariant breakage
kvm: fix sorting of memslots with base_gfn == 0
kvm: x86: drop severity of "generation wraparound" message
kvm: x86: vmx: reorder some msr writing
Pull vfs fix from Al Viro:
"An embarrassing bug in lustre patches from this cycle ;-/"
* 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs:
[regression] braino in "lustre: use is_root_inode()"
