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| author | SeongJae Park <sj@kernel.org> | 2022-11-07 17:50:01 +0100 |
|---|---|---|
| committer | Andrew Morton <akpm@linux-foundation.org> | 2022-12-01 00:58:47 +0100 |
| commit | d7ec8f421ade2817983963a106b0085cc478c17b (patch) | |
| tree | 85fab93cae3b18ae14c414ad44b91309525fb04f /tools/testing/selftests/damon/debugfs_rm_non_contexts.sh | |
| parent | mm,thp,rmap: handle the normal !PageCompound case first (diff) | |
| download | linux-d7ec8f421ade2817983963a106b0085cc478c17b.tar.xz linux-d7ec8f421ade2817983963a106b0085cc478c17b.zip | |
selftests/damon: test non-context inputs to rm_contexts file
There was a bug[1] that triggered by writing non-context DAMON debugfs
file names to the 'rm_contexts' DAMON debugfs file. Add a selftest for
the bug to avoid it happen again.
[1] https://lore.kernel.org/damon/000000000000ede3ac05ec4abf8e@google.com/
Link: https://lkml.kernel.org/r/20221107165001.5717-3-sj@kernel.org
Signed-off-by: SeongJae Park <sj@kernel.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Diffstat (limited to 'tools/testing/selftests/damon/debugfs_rm_non_contexts.sh')
| -rw-r--r-- | tools/testing/selftests/damon/debugfs_rm_non_contexts.sh | 19 |
1 files changed, 19 insertions, 0 deletions
diff --git a/tools/testing/selftests/damon/debugfs_rm_non_contexts.sh b/tools/testing/selftests/damon/debugfs_rm_non_contexts.sh new file mode 100644 index 000000000000..48b7af6b022c --- /dev/null +++ b/tools/testing/selftests/damon/debugfs_rm_non_contexts.sh @@ -0,0 +1,19 @@ +#!/bin/bash +# SPDX-License-Identifier: GPL-2.0 + +source _debugfs_common.sh + +# Test putting non-ctx files/dirs to rm_contexts file +# =================================================== + +dmesg -C + +for file in "$DBGFS/"* +do + echo "$(basename "$f")" > "$DBGFS/rm_contexts" + if dmesg | grep -q BUG + then + dmesg + exit 1 + fi +done |