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mm/damon/sysfs: dealloc commit test ctx always

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commit 139e7a572af0b45f558b5e502121a768dc328ba8 upstream.

The damon_ctx for testing online DAMON parameters commit inputs is
deallocated only when the test fails.  This means memory is leaked for
every successful online DAMON parameters commit.  Fix the leak by always
deallocating it.

Link: https://lkml.kernel.org/r/20251003201455.41448-3-sj@kernel.org
Fixes: 4c9ea539ad ("mm/damon/sysfs: validate user inputs from damon_sysfs_commit_input()")
Signed-off-by: SeongJae Park <sj@kernel.org>
Cc: <stable@vger.kernel.org>	[6.15+]
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
This commit is contained in:
SeongJae Park
2025-10-03 13:14:55 -07:00
committed by Greg Kroah-Hartman
parent 5b3609d9b9
commit ba236520ae
1 changed files with 2 additions and 3 deletions
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5
mm/damon/sysfs.c
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@@ -1438,12 +1438,11 @@ static int damon_sysfs_commit_input(void *data)
if (!test_ctx)
return -ENOMEM;
err = damon_commit_ctx(test_ctx, param_ctx);
if (err) {
damon_destroy_ctx(test_ctx);
if (err)
goto out;
}
err = damon_commit_ctx(kdamond->damon_ctx, param_ctx);
out:
damon_destroy_ctx(test_ctx);
damon_destroy_ctx(param_ctx);
return err;
}