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UPSTREAM: kcov: fix comparison callback signature

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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>

Bug: 64145065
(cherry-picked from 8c0431ec452de79ef3fe998c1fbb1e3d3ac13ddd)
Change-Id: Ic3872c33d03a456640dd6fdcce3b0795765dc1c0
Signed-off-by: Paul Lawrence <paullawrence@google.com>
This commit is contained in:
Dmitry Vyukov 2017-12-08 02:01:35 +00:00 • committed by Paul Lawrence
parent 540baa17a8
commit 4ae5c2ae5a
1 changed files with 2 additions and 2 deletions
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4
kernel/kcov.c
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@ -156,7 +156,7 @@ void notrace __sanitizer_cov_trace_cmp2(u16 arg1, u16 arg2)
}
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_);
}
@ -182,7 +182,7 @@ void notrace __sanitizer_cov_trace_const_cmp2(u16 arg1, u16 arg2)
}
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_);