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| author | Zhihao Cheng <chengzhihao1@huawei.com> | 2020-09-29 20:45:29 +0800 |
|---|---|---|
| committer | Richard Weinberger <richard@nod.at> | 2020-10-11 22:05:49 +0200 |
| commit | 47f6d9ce45b03a40c34b668a9884754c58122b39 (patch) | |
| tree | 57af4dd3f05185bcd1d762fe1f5211d5a83b6bb0 /fs/ubifs | |
| parent | b30e2238b7ff0c3cbe27f7bf024d73e17842f5fc (diff) | |
| download | linux-47f6d9ce45b03a40c34b668a9884754c58122b39.tar.gz linux-47f6d9ce45b03a40c34b668a9884754c58122b39.tar.bz2 linux-47f6d9ce45b03a40c34b668a9884754c58122b39.zip | |
ubifs: Fix a memleak after dumping authentication mount options
Fix a memory leak after dumping authentication mount options in error
handling branch.
Signed-off-by: Zhihao Cheng <chengzhihao1@huawei.com>
Cc: <stable@vger.kernel.org> # 4.20+
Fixes: d8a22773a12c6d7 ("ubifs: Enable authentication support")
Reviewed-by: Sascha Hauer <s.hauer@pengutronix.de>
Signed-off-by: Richard Weinberger <richard@nod.at>
Diffstat (limited to 'fs/ubifs')
| -rw-r--r-- | fs/ubifs/super.c | 16 |
1 files changed, 14 insertions, 2 deletions
diff --git a/fs/ubifs/super.c b/fs/ubifs/super.c index a2420c900275..6f85cd618766 100644 --- a/fs/ubifs/super.c +++ b/fs/ubifs/super.c @@ -1141,6 +1141,18 @@ static int ubifs_parse_options(struct ubifs_info *c, char *options, return 0; } +/* + * ubifs_release_options - release mount parameters which have been dumped. + * @c: UBIFS file-system description object + */ +static void ubifs_release_options(struct ubifs_info *c) +{ + kfree(c->auth_key_name); + c->auth_key_name = NULL; + kfree(c->auth_hash_name); + c->auth_hash_name = NULL; +} + /** * destroy_journal - destroy journal data structures. * @c: UBIFS file-system description object @@ -1650,8 +1662,7 @@ static void ubifs_umount(struct ubifs_info *c) ubifs_lpt_free(c, 0); ubifs_exit_authentication(c); - kfree(c->auth_key_name); - kfree(c->auth_hash_name); + ubifs_release_options(c); kfree(c->cbuf); kfree(c->rcvrd_mst_node); kfree(c->mst_node); @@ -2219,6 +2230,7 @@ out_umount: out_unlock: mutex_unlock(&c->umount_mutex); out_close: + ubifs_release_options(c); ubi_close_volume(c->ubi); out: return err; |