Messages in this thread Patch in this message | | | From | Andrey Ryabinin <> | Subject | [PATCH v2] kcov: don't profile branches in kcov | Date | Thu, 21 Apr 2016 15:16:24 +0300 |
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Profiling 'if' statements in __sanitizer_cov_trace_pc() leads to unbound recursion and crash: __sanitizer_cov_trace_pc() -> ftrace_likely_update -> __sanitizer_cov_trace_pc() ...
Define DISABLE_BRANCH_PROFILING to disable this tracer.
Signed-off-by: Andrey Ryabinin <aryabinin@virtuozzo.com> --- kernel/kcov.c | 1 + 1 file changed, 1 insertion(+)
diff --git a/kernel/kcov.c b/kernel/kcov.c index 3efbee0..aee961f 100644 --- a/kernel/kcov.c +++ b/kernel/kcov.c @@ -1,5 +1,6 @@ #define pr_fmt(fmt) "kcov: " fmt +#define DISABLE_BRANCH_PROFILING #include <linux/compiler.h> #include <linux/types.h> #include <linux/file.h> -- 2.7.3
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