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 <aryabi...@virtuozzo.com>
Cc: Dmitry Vyukov <dvyu...@google.com>
Signed-off-by: Andrew Morton <a...@linux-foundation.org>
Signed-off-by: Linus Torvalds <torva...@linux-foundation.org>
(cherry picked from commit 36f05ae8bce904b4c8105363e6227a79d343bda6)
Signed-off-by: Andrey Ryabinin <aryabi...@virtuozzo.com>
---
kernel/kcov.c | 1 +
1 file changed, 1 insertion(+)
diff --git a/kernel/kcov.c b/kernel/kcov.c
index f963fca..91b00e6 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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