>From ffd64dcf946502e7bb1d23c021ee9a4fc92f9312 Mon Sep 17 00:00:00 2001 From: Tetsuo Handa <penguin-kernel@xxxxxxxxxxxxxxxxxxx> Date: Tue, 15 May 2018 12:23:03 +0900 Subject: [PATCH] hfsplus: stop workqueue when fill_super() failed syzbot is reporting ODEBUG messages at hfsplus_fill_super() [1]. This is because hfsplus_fill_super() forgot to call cancel_delayed_work_sync(). As far as I can see, it is hfsplus_mark_mdb_dirty() from hfsplus_new_inode() in hfsplus_fill_super() that calls queue_delayed_work(). Therefore, I assume that hfsplus_new_inode() does not fail if queue_delayed_work() was called, and the out_put_hidden_dir label is the appropriate location to call cancel_delayed_work_sync(). [1] https://syzkaller.appspot.com/bug?id=a66f45e96fdbeb76b796bf46eb25ea878c42a6c9 Signed-off-by: Tetsuo Handa <penguin-kernel@xxxxxxxxxxxxxxxxxxx> Reported-by: syzbot <syzbot+4f2e5f086147d543ab03@xxxxxxxxxxxxxxxxxxxxxxxxx> Cc: Al Viro <viro@xxxxxxxxxxxxxxxxxx> --- fs/hfsplus/super.c | 1 + 1 file changed, 1 insertion(+) diff --git a/fs/hfsplus/super.c b/fs/hfsplus/super.c index 9e690ae..80abba5 100644 --- a/fs/hfsplus/super.c +++ b/fs/hfsplus/super.c @@ -590,6 +590,7 @@ static int hfsplus_fill_super(struct super_block *sb, void *data, int silent) return 0; out_put_hidden_dir: + cancel_delayed_work_sync(&sbi->sync_work); iput(sbi->hidden_dir); out_put_root: dput(sb->s_root); -- 1.8.3.1
