ext4: fix possible leak of s_journal_flag_rwsem in error path

vaverin · tytso · commit af18e35bfd01 · 2018-11-07T10:56:28.000-05:00
Fixes: c8585c6 ("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
diff --git 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);
