From af18e35bfd01e6d65a5e3ef84ffe8b252d1628c5 Mon Sep 17 00:00:00 2001
From: Vasily Averin <vvs@virtuozzo.com>
Date: Wed, 7 Nov 2018 10:56:28 -0500
Subject: [PATCH] ext4: fix possible leak of s_journal_flag_rwsem in error path
Git-commit: af18e35bfd01e6d65a5e3ef84ffe8b252d1628c5
Patch-mainline: v4.20-rc2
References: bsc#1117804

Fixes: c8585c6fcaf2 ("ext4: fix races between changing inode journal ...")
Signed-off-by: Vasily Averin <vvs@virtuozzo.com>
Signed-off-by: Theodore Ts'o <tytso@mit.edu>
Cc: stable@kernel.org # 4.7
Acked-by: Jan Kara <jack@suse.cz>

---
 fs/ext4/super.c | 1 +
 1 file changed, 1 insertion(+)

diff --git a/fs/ext4/super.c b/fs/ext4/super.c
index 92092b55db1e..53ff6c2a26ed 100644
--- a/fs/ext4/super.c
+++ b/fs/ext4/super.c
@@ -4510,6 +4510,7 @@ static int ext4_fill_super(struct super_block *sb, void *data, int silent)
 	percpu_counter_destroy(&sbi->s_freeinodes_counter);
 	percpu_counter_destroy(&sbi->s_dirs_counter);
 	percpu_counter_destroy(&sbi->s_dirtyclusters_counter);
+	percpu_free_rwsem(&sbi->s_journal_flag_rwsem);
 failed_mount5:
 	ext4_ext_release(sb);
 	ext4_release_system_zone(sb);
-- 
2.16.4