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| author | Gabriel Krisman Bertazi <krisman@collabora.com> | 2020-10-22 16:58:41 -0400 |
|---|---|---|
| committer | Jens Axboe <axboe@kernel.dk> | 2020-10-26 07:57:46 -0600 |
| commit | 52abfcbd57eefdd54737fc8c2dc79d8f46d4a3e5 (patch) | |
| tree | a5ebedefbf3c4d43496867f39f5fb07e41b9d063 /block/blk-cgroup.c | |
| parent | 3650b228f83adda7e5ee532e2b90429c03f7b9ec (diff) | |
| download | lwn-52abfcbd57eefdd54737fc8c2dc79d8f46d4a3e5.tar.gz lwn-52abfcbd57eefdd54737fc8c2dc79d8f46d4a3e5.zip | |
blk-cgroup: Fix memleak on error path
If new_blkg allocation raced with blk_policy change and
blkg_lookup_check fails, new_blkg is leaked.
Acked-by: Tejun Heo <tj@kernel.org>
Signed-off-by: Gabriel Krisman Bertazi <krisman@collabora.com>
Signed-off-by: Jens Axboe <axboe@kernel.dk>
Diffstat (limited to 'block/blk-cgroup.c')
| -rw-r--r-- | block/blk-cgroup.c | 1 |
1 files changed, 1 insertions, 0 deletions
diff --git a/block/blk-cgroup.c b/block/blk-cgroup.c index f9b55614d67d..f9389b7cf823 100644 --- a/block/blk-cgroup.c +++ b/block/blk-cgroup.c @@ -663,6 +663,7 @@ int blkg_conf_prep(struct blkcg *blkcg, const struct blkcg_policy *pol, blkg = blkg_lookup_check(pos, pol, q); if (IS_ERR(blkg)) { ret = PTR_ERR(blkg); + blkg_free(new_blkg); goto fail_unlock; } |