[PATCH] Re: memory leak in reiserfs_fill_super

[Randy Dunlap <rdunlap@xxxxxxxxxxxxx>]

From: Randy Dunlap <rdunlap@xxxxxxxxxxxxx>

fill_super() conditionally allocates a jdev string if "jdev=x"
is specified.  put_super() should free that memory.

Reported-by: syzbot+1c6756baf4b16b94d2a6@xxxxxxxxxxxxxxxxxxxxxxxxx
Signed-off-by: Randy Dunlap <rdunlap@xxxxxxxxxxxxx>
---
 fs/reiserfs/super.c |    1 +
 1 file changed, 1 insertion(+)

--- linux-next-20191213.orig/fs/reiserfs/super.c
+++ linux-next-20191213/fs/reiserfs/super.c
@@ -629,6 +629,7 @@ static void reiserfs_put_super(struct su
 	reiserfs_write_unlock(s);
 	mutex_destroy(&REISERFS_SB(s)->lock);
 	destroy_workqueue(REISERFS_SB(s)->commit_wq);
+	kfree(REISERFS_SB(s)->s_jdev);
 	kfree(s->s_fs_info);
 	s->s_fs_info = NULL;
 }