From: Fabian Frederick <fabf@skynet.be>
Date: Sat, 10 Jan 2015 18:13:32 +0000 (+0100)
Subject: udf: destroy sbi mutex in put_super
X-Git-Tag: firefly_0821_release~176^2~2379^2~18
X-Git-Url: http://demsky.eecs.uci.edu/git/?a=commitdiff_plain;h=bbe48dd811474adc2df96803f910d4dc2b5e5bde;p=firefly-linux-kernel-4.4.55.git

udf: destroy sbi mutex in put_super

Call mutex_destroy() on superblock mutex in udf_put_super()
otherwise mutex debugging code isn't able to detect that
mutex is used after being freed.
(thanks to Jan Kara for complete definition).

Signed-off-by: Fabian Frederick <fabf@skynet.be>
Signed-off-by: Jan Kara <jack@suse.cz>
---

diff --git a/fs/udf/super.c b/fs/udf/super.c
index 3ccb2f11fc76..3d35a754293a 100644
--- a/fs/udf/super.c
+++ b/fs/udf/super.c
@@ -2300,6 +2300,7 @@ static void udf_put_super(struct super_block *sb)
 		udf_close_lvid(sb);
 	brelse(sbi->s_lvid_bh);
 	udf_sb_free_partitions(sb);
+	mutex_destroy(&sbi->s_alloc_mutex);
 	kfree(sb->s_fs_info);
 	sb->s_fs_info = NULL;
 }