| From: Dmitry Vyukov <dvyukov@google.com> |
| 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@google.com |
| Fixes: ded97d2c2b2c ("kcov: support comparison operands collection") |
| Signed-off-by: Dmitry Vyukov <dvyukov@google.com> |
| Cc: syzkaller@googlegroups.com |
| Cc: Alexander Potapenko <glider@google.com> |
| Cc: Vegard Nossum <vegard.nossum@oracle.com> |
| Cc: Quentin Casasnovas <quentin.casasnovas@oracle.com> |
| Signed-off-by: Andrew Morton <akpm@linux-foundation.org> |
| --- |
| |
| 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_); |
| _ |
