The patch titled Subject: mm/damon/sysfs: dealloc commit test ctx always has been added to the -mm mm-hotfixes-unstable branch. Its filename is mm-damon-sysfs-dealloc-commit-test-ctx-always.patch
This patch will shortly appear at https://git.kernel.org/pub/scm/linux/kernel/git/akpm/25-new.git/tree/patches...
This patch will later appear in the mm-hotfixes-unstable branch at git://git.kernel.org/pub/scm/linux/kernel/git/akpm/mm
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------------------------------------------------------ From: SeongJae Park sj@kernel.org Subject: mm/damon/sysfs: dealloc commit test ctx always Date: Fri, 3 Oct 2025 13:14:55 -0700
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: 4c9ea539ad59 ("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 ---
mm/damon/sysfs.c | 5 ++--- 1 file changed, 2 insertions(+), 3 deletions(-)
--- a/mm/damon/sysfs.c~mm-damon-sysfs-dealloc-commit-test-ctx-always +++ a/mm/damon/sysfs.c @@ -1476,12 +1476,11 @@ static int damon_sysfs_commit_input(void 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; } _
Patches currently in -mm which might be from sj@kernel.org are
mm-damon-sysfs-catch-commit-test-ctx-alloc-failure.patch mm-damon-sysfs-dealloc-commit-test-ctx-always.patch mm-zswap-remove-unnecessary-dlen-writes-for-incompressible-pages.patch mm-zswap-fix-typos-s-zwap-zswap.patch mm-zswap-s-red-black-tree-xarray.patch docs-admin-guide-mm-zswap-s-red-black-tree-xarray.patch