[PATCH 01/53] selftests/mm: hugetlb-read-hwpoison: add SIGBUS handler

Mike Rapoport
2026-04-06T14:17:52Z

Access of poisoned memory causes SIGBUS, which terminates the
hugetlb-read-hwpoison test prematurely.

Add a dummy SIGBUS handler to allow the test to continue regardless of
SIGBUS.

Signed-off-by: Mike Rapoport (Microsoft) <rppt@kernel.org>
---
tools/testing/selftests/mm/hugetlb-read-hwpoison.c | 7 +++++++
1 file changed, 7 insertions(+)

diff --git a/tools/testing/selftests/mm/hugetlb-read-hwpoison.c b/tools/testing/selftests/mm/hugetlb-read-hwpoison.c
index 46230462ad48..6bbf15f78061 100644
--- a/tools/testing/selftests/mm/hugetlb-read-hwpoison.c
+++ b/tools/testing/selftests/mm/hugetlb-read-hwpoison.c
@@ -10,6 +10,7 @@
#include <sys/statfs.h>
#include <errno.h>
#include <stdbool.h>
+#include <signal.h>

#include "kselftest.h"

@@ -261,6 +262,11 @@ static int create_hugetlbfs_file(struct statfs *file_stat)
return -1;
}

+static void sigbus_handler(int sig)
+{
+ printf(PREFIX "received SIGBUS\n");
+}
+
int main(void)
{
int fd;
@@ -273,6 +279,7 @@ int main(void)
};
size_t i;

+ signal(SIGBUS, sigbus_handler);
for (i = 0; i < ARRAY_SIZE(wr_chunk_sizes); ++i) {
printf("Write/read chunk size=0x%lx\n",
wr_chunk_sizes[i]);
--
2.53.0