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| author | Josh Poimboeuf <jpoimboe@redhat.com> | 2017-07-27 15:56:55 -0500 |
|---|---|---|
| committer | Ingo Molnar <mingo@kernel.org> | 2017-08-21 16:07:27 +0200 |
| commit | deecd4d71b12626db48544faa66bb897e2cafd07 (patch) | |
| tree | fb351bffbae38eec99a99b63bec7a2c3039d172d /lib/net_utils.c | |
| parent | 14ccee78fc82f5512908f4424f541549a5705b89 (diff) | |
objtool: Fix '-mtune=atom' decoding support in objtool 2.0
With '-mtune=atom', which is enabled with CONFIG_MATOM=y, GCC uses some
unusual instructions for setting up the stack.
Instead of:
mov %rsp, %rbp
it does:
lea (%rsp), %rbp
And instead of:
add imm, %rsp
it does:
lea disp(%rsp), %rsp
Add support for these instructions to the objtool decoder.
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: baa41469a7b9 ("objtool: Implement stack validation 2.0")
Link: http://lkml.kernel.org/r/4ea1db896e821226efe1f8e09f270771bde47e65.1501188854.git.jpoimboe@redhat.com
[ This is a cherry-picked version of upcoming commit 5b8de48e82ba. ]
Signed-off-by: Ingo Molnar <mingo@kernel.org>
Diffstat (limited to 'lib/net_utils.c')
0 files changed, 0 insertions, 0 deletions