1 files changed, 2 insertions, 0 deletions

diff --git a/fs/ubifs/super.c b/fs/ubifs/super.c
index 845c5d7af909..bffadbb67e47 100644
--- a/fs/ubifs/super.c
+++ b/fs/ubifs/super.c
@@ -1876,8 +1876,10 @@ static int ubifs_remount_fs(struct super_block *sb, int *flags, char *data)
                 bu_init(c);
         else {
                 dbg_gen("disable bulk-read");
+                mutex_lock(&c->bu_mutex);
                 kfree(c->bu.buf);
                 c->bu.buf = NULL;
+                mutex_unlock(&c->bu_mutex);
         }
 
         ubifs_assert(c->lst.taken_empty_lebs > 0);