From: Vasily Averin <vvs@virtuozzo.com>
Date: Wed, 7 Nov 2018 15:56:28 +0000 (-0500)
Subject: ext4: fix possible leak of s_journal_flag_rwsem in error path
X-Git-Tag: v4.18.20~56
X-Git-Url: http://git.ipfire.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=2efa77a4df208ac375d2a438852035240a570973;p=thirdparty%2Fkernel%2Fstable.git

ext4: fix possible leak of s_journal_flag_rwsem in error path

commit af18e35bfd01e6d65a5e3ef84ffe8b252d1628c5 upstream.

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
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
---

diff --git a/fs/ext4/super.c b/fs/ext4/super.c
index 895158ef0053e..8b8c351fa9c59 100644
--- a/fs/ext4/super.c
+++ b/fs/ext4/super.c
@@ -4488,6 +4488,7 @@ failed_mount6:
 	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);