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selftests/mm: skip uprobe vma merge test if uprobes are not enabled

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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.

Link: https://lkml.kernel.org/r/20250610122209.3177587-1-pfalcato@suse.de
Fixes: efe99fabeb ("selftests/mm: add test about uprobe pte be orphan during vma merge")
Signed-off-by: Pedro Falcato <pfalcato@suse.de>
Reported-by: Aishwarya <aishwarya.tcv@arm.com>
Closes: https://lore.kernel.org/linux-mm/20250610103729.72440-1-aishwarya.tcv@arm.com/
Reviewed-by: Lorenzo Stoakes <lorenzo.stoakes@oracle.com>
Tested-by : Donet Tom <donettom@linux.ibm.com>
Reviewed-by : Donet Tom <donettom@linux.ibm.com>
Reviewed-by: Dev Jain <dev.jain@arm.com>
Reviewed-by: Pu Lehui <pulehui@huawei.com>
Cc: Jann Horn <jannh@google.com>
Cc: Liam Howlett <liam.howlett@oracle.com>
Cc: Mark Brown <broonie@kernel.org>
Cc: Shuah Khan <shuah@kernel.org>
Cc: Vlastimil Babka <vbabka@suse.cz>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
This commit is contained in:
Pedro Falcato 2025-06-10 13:22:09 +01:00 committed by Andrew Morton
parent 95b2e31e17
commit 3333871296
1 changed files with 4 additions and 1 deletions
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5
tools/testing/selftests/mm/merge.c
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@ -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);
}