From: Dmitry Vyukov <dvyukov@xxxxxxxxxx> Subject: kcov: fix comparison callback signature Fix a silly copy-paste bug. We truncated u32 args to u16. Link: http://lkml.kernel.org/r/20171207101134.107168-1-dvyukov@xxxxxxxxxx Fixes: ded97d2c2b2c ("kcov: support comparison operands collection") Signed-off-by: Dmitry Vyukov <dvyukov@xxxxxxxxxx> Cc: syzkaller@xxxxxxxxxxxxxxxx Cc: Alexander Potapenko <glider@xxxxxxxxxx> Cc: Vegard Nossum <vegard.nossum@xxxxxxxxxx> Cc: Quentin Casasnovas <quentin.casasnovas@xxxxxxxxxx> Signed-off-by: Andrew Morton <akpm@xxxxxxxxxxxxxxxxxxxx> --- kernel/kcov.c | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-) diff -puN kernel/kcov.c~kcov-fix-comparison-callback-signature kernel/kcov.c --- a/kernel/kcov.c~kcov-fix-comparison-callback-signature +++ a/kernel/kcov.c @@ -157,7 +157,7 @@ void notrace __sanitizer_cov_trace_cmp2( } EXPORT_SYMBOL(__sanitizer_cov_trace_cmp2); -void notrace __sanitizer_cov_trace_cmp4(u16 arg1, u16 arg2) +void notrace __sanitizer_cov_trace_cmp4(u32 arg1, u32 arg2) { write_comp_data(KCOV_CMP_SIZE(2), arg1, arg2, _RET_IP_); } @@ -183,7 +183,7 @@ void notrace __sanitizer_cov_trace_const } EXPORT_SYMBOL(__sanitizer_cov_trace_const_cmp2); -void notrace __sanitizer_cov_trace_const_cmp4(u16 arg1, u16 arg2) +void notrace __sanitizer_cov_trace_const_cmp4(u32 arg1, u32 arg2) { write_comp_data(KCOV_CMP_SIZE(2) | KCOV_CMP_CONST, arg1, arg2, _RET_IP_); _ -- To unsubscribe from this list: send the line "unsubscribe mm-commits" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
