From: Andrew Morton <akpm@linux-foundation.org>
To: mm-commits@vger.kernel.org, stable@vger.kernel.org,
sj@kernel.org, ppbuk5246@gmail.com, akpm@linux-foundation.org
Subject: [merged mm-hotfixes-stable] damon-sysfs-fix-possible-memleak-on-damon_sysfs_add_target.patch removed from -mm tree
Date: Fri, 30 Sep 2022 18:47:21 -0700 [thread overview]
Message-ID: <20221001014722.5FE2AC433D6@smtp.kernel.org> (raw)
The quilt patch titled
Subject: damon/sysfs: fix possible memleak on damon_sysfs_add_target
has been removed from the -mm tree. Its filename was
damon-sysfs-fix-possible-memleak-on-damon_sysfs_add_target.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: Levi Yun <ppbuk5246@gmail.com>
Subject: damon/sysfs: fix possible memleak on damon_sysfs_add_target
Date: Mon, 26 Sep 2022 16:06:11 +0000
When damon_sysfs_add_target couldn't find proper task, New allocated
damon_target structure isn't registered yet, So, it's impossible to free
new allocated one by damon_sysfs_destroy_targets.
By calling damon_add_target as soon as allocating new target, Fix this
possible memory leak.
Link: https://lkml.kernel.org/r/20220926160611.48536-1-sj@kernel.org
Fixes: a61ea561c871 ("mm/damon/sysfs: link DAMON for virtual address spaces monitoring")
Signed-off-by: Levi Yun <ppbuk5246@gmail.com>
Signed-off-by: SeongJae Park <sj@kernel.org>
Reviewed-by: SeongJae Park <sj@kernel.org>
Cc: <stable@vger.kernel.org> [5.17.x]
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
---
mm/damon/sysfs.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
--- a/mm/damon/sysfs.c~damon-sysfs-fix-possible-memleak-on-damon_sysfs_add_target
+++ a/mm/damon/sysfs.c
@@ -2182,12 +2182,12 @@ static int damon_sysfs_add_target(struct
if (!t)
return -ENOMEM;
+ damon_add_target(ctx, t);
if (damon_target_has_pid(ctx)) {
t->pid = find_get_pid(sys_target->pid);
if (!t->pid)
goto destroy_targets_out;
}
- damon_add_target(ctx, t);
err = damon_sysfs_set_regions(t, sys_target->regions);
if (err)
goto destroy_targets_out;
_
Patches currently in -mm which might be from ppbuk5246@gmail.com are
reply other threads:[~2022-10-01 1:47 UTC|newest]
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