path: root/tools/testing/selftests/arm64
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authorAndre Przywara <andre.przywara@arm.com>2021-03-19 16:53:34 +0000
committerCatalin Marinas <catalin.marinas@arm.com>2021-03-24 15:43:20 +0000
commit75347add03e0fa60ecf2f79e41ec2152b8504593 (patch)
tree986b06915f8119b666e4397465e1092e38957377 /tools/testing/selftests/arm64
parentkselftest/arm64: mte: Fix clang warning (diff)
kselftest/arm64: mte: Report filename on failing temp file creation
The MTE selftests create temporary files in /dev/shm, for later mmap-ing them. When there is no tmpfs mounted on /dev/shm, or /dev/shm does not exist in the first place (on minimal filesystems), the error message is not giving good hints: # FAIL: Unable to open temporary file # FAIL: memory allocation not ok 17 Check initial tags with private mapping, ... Add a perror() call, that gives both the filename and the actual error reason, so that users get a chance of correcting that. Signed-off-by: Andre Przywara <andre.przywara@arm.com> Reviewed-by: Mark Brown <broone@kernel.org> Link: https://lore.kernel.org/r/20210319165334.29213-12-andre.przywara@arm.com Signed-off-by: Catalin Marinas <catalin.marinas@arm.com>
Diffstat (limited to 'tools/testing/selftests/arm64')
1 files changed, 1 insertions, 0 deletions
diff --git a/tools/testing/selftests/arm64/mte/mte_common_util.c b/tools/testing/selftests/arm64/mte/mte_common_util.c
index 040abdca079d..f50ac31920d1 100644
--- a/tools/testing/selftests/arm64/mte/mte_common_util.c
+++ b/tools/testing/selftests/arm64/mte/mte_common_util.c
@@ -337,6 +337,7 @@ int create_temp_file(void)
/* Create a file in the tmpfs filesystem */
fd = mkstemp(&filename[0]);
if (fd == -1) {
+ perror(filename);
ksft_print_msg("FAIL: Unable to open temporary file\n");
return 0;