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linux/tools/objtool
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Josh Poimboeuf 56fb2d6eb6 objtool: Fix rare switch jump table pattern detection 
The following commit:

  3732710ff6 ("objtool: Improve rare switch jump table pattern detection")

... improved objtool's ability to detect GCC switch statement jump
tables for GCC 6.  However the check to allow short jumps with the
scanned range of instructions wasn't quite right.  The pattern detection
should allow jumps to the indirect jump instruction itself.

This fixes the following warning:

  drivers/infiniband/sw/rxe/rxe_comp.o: warning: objtool: rxe_completer()+0x315: sibling call from callable instruction with changed frame pointer

Reported-by: Arnd Bergmann <arnd@arndb.de>
Signed-off-by: Josh Poimboeuf <jpoimboe@redhat.com>
Cc: Linus Torvalds <torvalds@linux-foundation.org>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Thomas Gleixner <tglx@linutronix.de>
Fixes: 3732710ff6 ("objtool: Improve rare switch jump table pattern detection")
Link: http://lkml.kernel.org/r/20161026153408.2rifnw7bvoc5sex7@treble
Signed-off-by: Ingo Molnar <mingo@kernel.org>
History 2016-10-27 08:20:27 +02:00
..
arch/x86 objtool: Support '-mtune=atom' stack frame setup instruction 2016-10-11 10:35:45 +02:00
Documentation objtool: Detect falling through to the next function 2016-04-16 11:14:17 +02:00
.gitignore objtool: Add 'fixdep' to objtool/.gitignore 2016-07-27 11:07:11 +02:00
arch.h objtool: Add tool to perform compile-time stack metadata validation 2016-02-29 08:35:12 +01:00
Build tools build: Fix objtool build with ARCH=x86_64 2016-07-22 16:37:44 -03:00
builtin-check.c objtool: Fix rare switch jump table pattern detection 2016-10-27 08:20:27 +02:00
builtin.h objtool: Add tool to perform compile-time stack metadata validation 2016-02-29 08:35:12 +01:00
elf.c objtool: Add fallback from ELF_C_READ_MMAP to ELF_C_READ 2016-07-13 15:38:50 -03:00
elf.h objtool: Allow building with older libelf 2016-05-17 10:42:46 +02:00
Makefile objtool: Un-capitalize "Warning" for out-of-sync instruction decoder 2016-07-29 16:57:16 +02:00
objtool.c objtool: Add tool to perform compile-time stack metadata validation 2016-02-29 08:35:12 +01:00
special.c objtool: Add tool to perform compile-time stack metadata validation 2016-02-29 08:35:12 +01:00
special.h objtool: Add tool to perform compile-time stack metadata validation 2016-02-29 08:35:12 +01:00
warn.h objtool: Add tool to perform compile-time stack metadata validation 2016-02-29 08:35:12 +01:00