If uprobes are not enabled, the test currently fails with:
7151 12:46:54.627936 # # # RUN merge.handle_uprobe_upon_merged_vma
...
7152 12:46:54.639014 # # f /sys/bus/event_source/devices/uprobe/type
7153 12:46:54.639306 # # fopen: No such file or directory
7154 12:46:54.650451 # # # merge.c:473:handle_uprobe_upon_merged_vma:Expected
read_sysfs("/sys/bus/event_source/devices/uprobe/type", &type) (1) == 0 (0)
7155 12:46:54.650730 # # # handle_uprobe_upon_merged_vma: Test terminated by
assertion
7156 12:46:54.661750 # # # FAIL merge.handle_uprobe_upon_merged_vma
7157 12:46:54.662030 # # not ok 8 merge.handle_uprobe_upon_merged_vma
Skipping is a more sane and friendly behavior here.
Fixes: efe99fabeb11b ("selftests/mm: add test about uprobe pte be orphan during
vma merge")
Reported-by: Aishwarya <aishwarya....@arm.com>
Closes:
https://lore.kernel.org/linux-mm/20250610103729.72440-1-aishwarya....@arm.com/
Signed-off-by: Pedro Falcato <pfalc...@suse.de>
---
tools/testing/selftests/mm/merge.c | 5 ++++-
1 file changed, 4 insertions(+), 1 deletion(-)
diff --git a/tools/testing/selftests/mm/merge.c
b/tools/testing/selftests/mm/merge.c
index bbae66fc5038..cc26480098ae 100644
--- a/tools/testing/selftests/mm/merge.c
+++ b/tools/testing/selftests/mm/merge.c
@@ -470,7 +470,9 @@ TEST_F(merge, handle_uprobe_upon_merged_vma)
ASSERT_GE(fd, 0);
ASSERT_EQ(ftruncate(fd, page_size), 0);
- ASSERT_EQ(read_sysfs("/sys/bus/event_source/devices/uprobe/type",
&type), 0);
+ if (read_sysfs("/sys/bus/event_source/devices/uprobe/type", &type) !=
0) {
+ SKIP(goto out, "Failed to read uprobe sysfs file, skipping");
+ }
memset(&attr, 0, attr_sz);
attr.size = attr_sz;
@@ -491,6 +493,7 @@ TEST_F(merge, handle_uprobe_upon_merged_vma)
ASSERT_NE(mremap(ptr2, page_size, page_size,
MREMAP_MAYMOVE | MREMAP_FIXED, ptr1), MAP_FAILED);
+out:
close(fd);
remove(probe_file);
}
--
2.49.0
