From: Andrew Morton <akpm@linux-foundation.org>
To: mm-commits@vger.kernel.org,stable@vger.kernel.org,sj@kernel.org,akpm@linux-foundation.org
Subject: [merged mm-hotfixes-stable] mm-damon-sysfs-schemes-fix-dir-put-orders-in-access_pattern_add_dirs.patch removed from -mm tree
Date: Wed, 01 Jul 2026 19:03:30 -0700 [thread overview]
Message-ID: <20260702020331.2D7D11F00A3A@smtp.kernel.org> (raw)
The quilt patch titled
Subject: mm/damon/sysfs-schemes: fix dir put orders in access_pattern_add_dirs()
has been removed from the -mm tree. Its filename was
mm-damon-sysfs-schemes-fix-dir-put-orders-in-access_pattern_add_dirs.patch
This patch was dropped because it was merged into the mm-hotfixes-stable branch
of git://git.kernel.org/pub/scm/linux/kernel/git/akpm/mm
------------------------------------------------------
From: SeongJae Park <sj@kernel.org>
Subject: mm/damon/sysfs-schemes: fix dir put orders in access_pattern_add_dirs()
Date: Wed, 17 Jun 2026 17:56:47 -0700
Patch series "mm/damon/sysfs-schemes: fix wrong directories put orders in
error paths".
Error paths of damon_sysfs_access_pattern_add_dirs() and
damon_sysfs_scheme_add_dirs() functions put references to directories in
wrong orders. As a result, uninitialized memory dereference and/or
memory leak can happen. Fix those.
This patch (of 2):
In access_pattern_add_dirs(), error handling path puts references starting
from setup failed directories. If the failure happpened from the initial
allication in the setup functions, uninitialized memory dereference
happen. The allocation failures will not commonly happen, but the
consequence is quite bad. Fix the wrong reference put orders.
The issue was discovered [1] by Sashiko.
Link: https://lore.kernel.org/20260618005650.83868-2-sj@kernel.org
Link: https://lore.kernel.org/20260617060005.86852-1-sj@kernel.org [1]
Fixes: 7e84b1f8212a ("mm/damon/sysfs: support DAMON-based Operation Schemes")
Signed-off-by: SeongJae Park <sj@kernel.org>
Cc: <stable@vger.kernel.org> # 5.18.x
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
---
mm/damon/sysfs-schemes.c | 9 +++------
1 file changed, 3 insertions(+), 6 deletions(-)
--- a/mm/damon/sysfs-schemes.c~mm-damon-sysfs-schemes-fix-dir-put-orders-in-access_pattern_add_dirs
+++ a/mm/damon/sysfs-schemes.c
@@ -1993,22 +1993,19 @@ static int damon_sysfs_access_pattern_ad
err = damon_sysfs_access_pattern_add_range_dir(access_pattern,
&access_pattern->sz, "sz");
if (err)
- goto put_sz_out;
+ return err;
err = damon_sysfs_access_pattern_add_range_dir(access_pattern,
&access_pattern->nr_accesses, "nr_accesses");
if (err)
- goto put_nr_accesses_sz_out;
+ goto put_sz_out;
err = damon_sysfs_access_pattern_add_range_dir(access_pattern,
&access_pattern->age, "age");
if (err)
- goto put_age_nr_accesses_sz_out;
+ goto put_nr_accesses_sz_out;
return 0;
-put_age_nr_accesses_sz_out:
- kobject_put(&access_pattern->age->kobj);
- access_pattern->age = NULL;
put_nr_accesses_sz_out:
kobject_put(&access_pattern->nr_accesses->kobj);
access_pattern->nr_accesses = NULL;
_
Patches currently in -mm which might be from sj@kernel.org are
maintainers-s-seongjae-sj.patch
mm-damon-core-validate-ranges-in-damon_set_regions.patch
samples-damon-wsse-handle-damon_start-failure.patch
samples-damon-prcl-handle-damon_start-failure.patch
samples-damon-mtier-handle-damon_start-failure.patch
samples-damon-mtier-handle-damon_stop-failure.patch
samples-damon-wsse-stop-and-free-damon-ctx-when-damon_call-fails.patch
samples-damon-prcl-stop-and-free-damon-ctx-when-damon_call-fails.patch
mm-damon-sysfs-kobject_del-target-normal-context-and-kdamond-dirs.patch
mm-damon-sysfs-kobject_del-region-and-target-error-dirs.patch
mm-damon-sysfs-schemes-kobject_del-scheme-dirs.patch
mm-damon-sysfs-schemes-kobject_del-scheme-region-dirs.patch
mm-damon-sysfs-schemes-kobject_del-scheme-filter-dirs.patch
mm-damon-sysfs-schemes-kobject_del-scheme-quota-goal-dirs.patch
mm-damon-sysfs-schemes-kobject_del-scheme-action-destination-dirs.patch
mm-damon-sysfs-kobject_del-probe-dirs.patch
mm-damon-sysfs-kobject_del-probe-filter-dirs.patch
mm-damon-sysfs-kobject_del-probe-dirs-in-probes_addd_dir-error-path.patch
mm-damon-sysfs-schemes-kobject_del-region-for-populate_region-error.patch
docs-mm-damon-design-update-for-damos_quota_node_eligible_mem_bp.patch
docs-abi-damon-document-probe-files.patch
mm-damon-tests-core-kunit-test-damon_rand.patch
selftests-damon-sysfssh-test-multiple-probe-dirs-creation.patch
selftests-damon-sysfssh-test-coreops_filters-directories.patch
selftests-damon-sysfssh-test-dests-dir.patch
selftests-damon-sysfssh-test-all-files-in-quota-goal-dir.patch
mm-damon-core-reduce-range-setup-in-damon_commit_target_regions.patch
mm-damon-sysfs-split-probe-setup-function-out.patch
mm-damon-sysfs-split-out-filters-setup-function.patch
mm-damon-sysfs-fix-typos-in-probe_addrm_dirs-s-attr-probe.patch
mm-damon-core-introduce-damon_nr_accesses_mvsum.patch
mm-damon-tests-core-kunit-test-damon_mvsum.patch
mm-damon-core-always-update-last_nr_accesses-for-intervals-change.patch
mm-damon-core-handle-unreset-nr_accesses-in-damon_nr_accesses_mvsum.patch
mm-damon-core-use-damon_nr_accesses_mvsum-in-__damos_valid_target.patch
mm-damon-core-use-damon_nr_accesses_mvsum-for-damos-region-tracing.patch
mm-damon-sysfs-schemes-use-damon_nr_accesses_mvsum-for-damo-regions.patch
mm-damon-core-remove-damon_warn_fix_nr_accesses_corruption.patch
mm-damon-core-remove-damon_verify_reset_aggregated.patch
mm-damon-core-remove-damon_verify_merge_regions_of.patch
mm-damon-tests-core-kunit-remove-nr_accesses_bp-setup-and-tests.patch
selftests-damon-drgn_dump_damon_status-do-not-dump-nr_accesses_bp.patch
mm-damon-core-remove-nr_accesses_bp-setups-and-updates.patch
mm-damon-core-remove-attrs-param-from-damon_update_region_access_rate.patch
mm-damon-paddr-remove-attrs-param-from-__damon_pa_check_access.patch
mm-damon-vaddr-remove-attrs-param-from-__damon_va_check_access.patch
mm-damon-core-remove-damon_moving_sum-and-its-unit-test.patch
mm-damon-core-remove-damon_region-nr_accesses_bp.patch
reply other threads:[~2026-07-02 2:03 UTC|newest]
Thread overview: [no followups] expand[flat|nested] mbox.gz Atom feed
Reply instructions:
You may reply publicly to this message via plain-text email
using any one of the following methods:
* Save the following mbox file, import it into your mail client,
and reply-to-all from there: mbox
Avoid top-posting and favor interleaved quoting:
https://en.wikipedia.org/wiki/Posting_style#Interleaved_style
* Reply using the --to, --cc, and --in-reply-to
switches of git-send-email(1):
git send-email \
--in-reply-to=20260702020331.2D7D11F00A3A@smtp.kernel.org \
--to=akpm@linux-foundation.org \
--cc=mm-commits@vger.kernel.org \
--cc=sj@kernel.org \
--cc=stable@vger.kernel.org \
/path/to/YOUR_REPLY
https://kernel.org/pub/software/scm/git/docs/git-send-email.html
* If your mail client supports setting the In-Reply-To header
via mailto: links, try the mailto: link
Be sure your reply has a Subject: header at the top and a blank line
before the message body.
This is an external index of several public inboxes,
see mirroring instructions on how to clone and mirror
all data and code used by this external index.