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ocfs2: fix possible memory leak in ocfs2_finish_quota_recovery

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[ Upstream commit cdc3ed3035 ]

If ocfs2_finish_quota_recovery() exits due to an error before passing all
rc_list elements to ocfs2_recover_local_quota_file() then it can lead to a
memory leak as rc_list may still contain elements that have to be freed.

Release all memory allocated by ocfs2_add_recovery_chunk() using
ocfs2_free_quota_recovery() instead of kfree().

Found by Linux Verification Center (linuxtesting.org) with Syzkaller.

Link: https://lkml.kernel.org/r/20250402065628.706359-2-m.masimov@mt-integration.ru
Fixes: 2205363dce ("ocfs2: Implement quota recovery")
Signed-off-by: Murad Masimov <m.masimov@mt-integration.ru>
Reviewed-by: Jan Kara <jack@suse.cz>
Reviewed-by: Joseph Qi <joseph.qi@linux.alibaba.com>
Cc: Mark Fasheh <mark@fasheh.com>
Cc: Joel Becker <jlbec@evilplan.org>
Cc: Junxiao Bi <junxiao.bi@oracle.com>
Cc: Changwei Ge <gechangwei@live.cn>
Cc: Jun Piao <piaojun@huawei.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Sasha Levin <sashal@kernel.org>
This commit is contained in:
Murad Masimov 2025-04-02 09:56:27 +03:00 committed by Greg Kroah-Hartman
parent 5c51aa862c
commit 1a955db411
1 changed files with 1 additions and 1 deletions
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2
fs/ocfs2/quota_local.c
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@ -671,7 +671,7 @@ out_put:
break;
}
out:
kfree(rec);
ocfs2_free_quota_recovery(rec);
return status;
}