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| author | Peter Zijlstra <peterz@infradead.org> | 2017-02-03 13:13:12 -0800 |
|---|---|---|
| committer | Linus Torvalds <torvalds@linux-foundation.org> | 2017-02-03 14:13:19 -0800 |
| commit | 4f40c6e5627ea73b4e7c615c59631f38cc880885 (patch) | |
| tree | f1271c5000809746eef65329b4676430987438bc | |
| parent | d7b028f56a971a2e4d8d7887540a144eeefcd4ab (diff) | |
| download | linux-4f40c6e5627ea73b4e7c615c59631f38cc880885.tar.gz linux-4f40c6e5627ea73b4e7c615c59631f38cc880885.tar.bz2 linux-4f40c6e5627ea73b4e7c615c59631f38cc880885.zip | |
kasan: respect /proc/sys/kernel/traceoff_on_warning
After much waiting I finally reproduced a KASAN issue, only to find my
trace-buffer empty of useful information because it got spooled out :/
Make kasan_report honour the /proc/sys/kernel/traceoff_on_warning
interface.
Link: http://lkml.kernel.org/r/20170125164106.3514-1-aryabinin@virtuozzo.com
Signed-off-by: Peter Zijlstra (Intel) <peterz@infradead.org>
Signed-off-by: Andrey Ryabinin <aryabinin@virtuozzo.com>
Acked-by: Alexander Potapenko <glider@google.com>
Cc: Dmitry Vyukov <dvyukov@google.com>
Cc: Steven Rostedt <rostedt@goodmis.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
| -rw-r--r-- | mm/kasan/report.c | 3 |
1 files changed, 3 insertions, 0 deletions
diff --git a/mm/kasan/report.c b/mm/kasan/report.c index b82b3e215157..f479365530b6 100644 --- a/mm/kasan/report.c +++ b/mm/kasan/report.c @@ -13,6 +13,7 @@ * */ +#include <linux/ftrace.h> #include <linux/kernel.h> #include <linux/mm.h> #include <linux/printk.h> @@ -300,6 +301,8 @@ void kasan_report(unsigned long addr, size_t size, if (likely(!kasan_report_enabled())) return; + disable_trace_on_warning(); + info.access_addr = (void *)addr; info.access_size = size; info.is_write = is_write; |