* [LTP] [PATCH COMMITTED] mtest06/mmap1: add note about known panics/stalls on s390x
@ 2019-03-08 10:09 Jan Stancek
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From: Jan Stancek @ 2019-03-08 10:09 UTC (permalink / raw)
To: ltp
Signed-off-by: Jan Stancek <jstancek@redhat.com>
---
testcases/kernel/mem/mtest06/mmap1.c | 3 +++
1 file changed, 3 insertions(+)
diff --git a/testcases/kernel/mem/mtest06/mmap1.c b/testcases/kernel/mem/mtest06/mmap1.c
index 6e8269be02be..b7b742653114 100644
--- a/testcases/kernel/mem/mtest06/mmap1.c
+++ b/testcases/kernel/mem/mtest06/mmap1.c
@@ -11,6 +11,9 @@
* hit SIGSEGV in between mmap/munmap it is a failure. If a read
* between mmap/munmap worked, then its value must match expected
* value.
+ *
+ * Can trigger panics/stalls since at least 4.14 on some arches. See:
+ * fc8efd2ddfed ("mm/memory.c: do_fault: avoid usage of stale vm_area_struct")
*/
#include <errno.h>
#include <float.h>
--
1.8.3.1
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2019-03-08 10:09 [LTP] [PATCH COMMITTED] mtest06/mmap1: add note about known panics/stalls on s390x Jan Stancek
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