diff options
| author | Levi Yun <ppbuk5246@gmail.com> | 2022-09-26 16:06:11 +0000 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2022-10-05 10:40:55 +0200 |
| commit | b11cc6399c56b4d46e5334cc77ccfbc162642292 (patch) | |
| tree | 31e9dbd78ecb28fa9e7481a36b765804a88a2448 | |
| parent | 381eae6b1dc33170553fa09d8c401b89bc023823 (diff) | |
damon/sysfs: fix possible memleak on damon_sysfs_add_target
commit 1c8e2349f2d033f634d046063b704b2ca6c46972 upstream.
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>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
| -rw-r--r-- | mm/damon/sysfs.c | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/mm/damon/sysfs.c b/mm/damon/sysfs.c index 09f9e8ca3d1f..5b5ee3308d71 100644 --- a/mm/damon/sysfs.c +++ b/mm/damon/sysfs.c @@ -2181,13 +2181,13 @@ static int damon_sysfs_add_target(struct damon_sysfs_target *sys_target, if (!t) return -ENOMEM; + damon_add_target(ctx, t); if (ctx->ops.id == DAMON_OPS_VADDR || ctx->ops.id == DAMON_OPS_FVADDR) { 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; |