linux/tools
Josh Poimboeuf d8d1b2cb58 objtool: Fix false positive warnings related to sibling calls
With some configs [1], objtool prints a bunch of false positive warnings
like:

  arch/x86/events/core.o: warning: objtool: x86_del_exclusive()+0x0: frame pointer state mismatch

For some reason this config has a bunch of sibling calls.  When objtool
follows a sibling call jump, it attempts to compare the frame pointer
state.  But it also accidentally compares the FENTRY state, resulting in
a false positive warning.

[1] https://lkml.kernel.org/r/20160308154909.GA20956@gmail.com

Signed-off-by: Josh Poimboeuf <jpoimboe@redhat.com>
Cc: Andrew Morton <akpm@linux-foundation.org>
Cc: Andy Lutomirski <luto@kernel.org>
Cc: Arnaldo Carvalho de Melo <acme@infradead.org>
Cc: Arnaldo Carvalho de Melo <acme@kernel.org>
Cc: Bernd Petrovitsch <bernd@petrovitsch.priv.at>
Cc: Borislav Petkov <bp@alien8.de>
Cc: Chris J Arges <chris.j.arges@canonical.com>
Cc: Jiri Slaby <jslaby@suse.cz>
Cc: Linus Torvalds <torvalds@linux-foundation.org>
Cc: Michal Marek <mmarek@suse.cz>
Cc: Namhyung Kim <namhyung@gmail.com>
Cc: Pedro Alves <palves@redhat.com>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Thomas Gleixner <tglx@linutronix.de>
Cc: live-patching@vger.kernel.org
Link: http://lkml.kernel.org/r/382de77ccaaa8cd79b27a155c3d109ebd4ce0219.1457502970.git.jpoimboe@redhat.com
Signed-off-by: Ingo Molnar <mingo@kernel.org>
2016-03-09 10:48:08 +01:00
..
arch
build tools build: Add BPF feature check to test-all 2016-01-11 19:22:21 -03:00
cgroup
firewire
hv tools: hv: vss: fix the write()'s argument: error -> vss_msg 2015-12-14 19:15:05 -08:00
iio iio: generic_buffer: be helpful about enabling channels 2015-08-16 10:51:26 +01:00
include tools: Make list.h self-sufficient 2016-01-12 12:42:07 -03:00
laptop/freefall Move freefall program from Documentation/ to tools/ 2015-06-08 16:42:07 -06:00
lguest tools/lguest: Clean up include dir 2015-08-26 06:12:35 +02:00
lib objtool: Support CROSS_COMPILE 2016-03-03 16:13:00 +01:00
net tools/net: Use include/uapi with __EXPORTED_HEADERS__ 2015-11-15 17:24:33 -05:00
nfsd
objtool objtool: Fix false positive warnings related to sibling calls 2016-03-09 10:48:08 +01:00
perf x86/asm/decoder: Use explicitly signed chars 2016-03-03 16:13:00 +01:00
power Merge branch 'pm-tools' 2016-01-21 00:43:29 +01:00
scripts tools: Move Makefile.arch from perf/config to tools/scripts 2016-01-11 19:22:20 -03:00
spi spi: spidev_test: Fix typo in error message 2015-12-08 17:58:56 +00:00
testing Merge branch 'x86/debug' into core/objtool, to pick up frame pointer fixes 2016-02-25 09:00:38 +01:00
thermal/tmon tools/thermal: tmon: use pkg-config also for CFLAGS 2015-10-10 11:32:31 +08:00
time
usb usb: patches for v4.4 merge window 2015-10-22 17:19:33 -07:00
virtio tools/virtio: add ringtest utilities 2016-01-26 10:18:30 +02:00
vm tools/vm/page-types.c: support KPF_IDLE 2015-11-20 16:17:32 -08:00
Makefile objtool: Add tool to perform compile-time stack metadata validation 2016-02-29 08:35:12 +01:00