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Diffstat (limited to 'tools/testing/selftests/arm64/mte/check_user_mem.c')
-rw-r--r--tools/testing/selftests/arm64/mte/check_user_mem.c3
1 files changed, 2 insertions, 1 deletions
diff --git a/tools/testing/selftests/arm64/mte/check_user_mem.c b/tools/testing/selftests/arm64/mte/check_user_mem.c
index 4bfa80f2a8c3..1de7a0abd0ae 100644
--- a/tools/testing/selftests/arm64/mte/check_user_mem.c
+++ b/tools/testing/selftests/arm64/mte/check_user_mem.c
@@ -33,7 +33,8 @@ static int check_usermem_access_fault(int mem_type, int mode, int mapping)
if (fd == -1)
return KSFT_FAIL;
for (i = 0; i < len; i++)
- write(fd, &val, sizeof(val));
+ if (write(fd, &val, sizeof(val)) != sizeof(val))
+ return KSFT_FAIL;
lseek(fd, 0, 0);
ptr = mte_allocate_memory(len, mem_type, mapping, true);
if (check_allocated_memory(ptr, len, mem_type, true) != KSFT_PASS) {