Josh Poimboeuf 7631376b2d objtool: Fix retpoline detection in asm code ...

[ Upstream commit 1f9a1b7494 ]

The JMP_NOSPEC macro branches to __x86_retpoline_*() rather than the
__x86_indirect_thunk_*() wrappers used by C code.  Detect jumps to
__x86_retpoline_*() as retpoline dynamic jumps.

Presumably this doesn't trigger a user-visible bug.  I only found it
when testing vmlinux.o validation.

Fixes: 39b735332c ("objtool: Detect jumps to retpoline thunks")
Signed-off-by: Josh Poimboeuf <jpoimboe@redhat.com>
Link: https://lore.kernel.org/r/31f5833e2e4f01e3d755889ac77e3661e906c09f.1611263461.git.jpoimboe@redhat.com
Signed-off-by: Sasha Levin <sashal@kernel.org>

2021-03-04 11:38:00 +01:00

..

include

objtool: Move macros describing structures to arch-dependent code

2020-09-10 10:43:13 -05:00

Build

objtool: Abstract alternative special case handling

2020-09-10 10:43:13 -05:00

decode.c

objtool: Decode unwind hint register depending on architecture

2020-09-10 10:43:13 -05:00

special.c

objtool: Fix retpoline detection in asm code

2021-03-04 11:38:00 +01:00