syscalls/x86: Use the correct function type in SYSCALL_DEFINE0

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Although a syscall defined using SYSCALL_DEFINE0 doesn't accept
parameters, use the correct function type to avoid type mismatches
with Control-Flow Integrity (CFI) checking.

Signed-off-by: Sami Tolvanen <samitolvanen@google.com>
Acked-by: Andy Lutomirski <luto@kernel.org>
Cc: Borislav Petkov <bp@alien8.de>
Cc: H . Peter Anvin <hpa@zytor.com>
Cc: Kees Cook <keescook@chromium.org>
Cc: Linus Torvalds <torvalds@linux-foundation.org>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Thomas Gleixner <tglx@linutronix.de>
Link: https://lkml.kernel.org/r/20191008224049.115427-2-samitolvanen@google.com
Signed-off-by: Ingo Molnar <mingo@kernel.org>

...

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Sami Tolvanen 2019-10-08 15:40:45 -07:00 • committed by Ingo Molnar

parent 8a8c600de5

commit 8661d769ab

1 changed files with 12 additions and 11 deletions

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23

arch/x86/include/asm/syscall_wrapper.h

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