linux-kernel - Re: [syzbot] [fuse?] WARNING in fuse_request

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Message-Id: <20240511123655.2700-1-hdanton@sina.com>
Date: Sat, 11 May 2024 20:36:55 +0800
From: Hillf Danton <hdanton@...a.com>
To: syzbot <syzbot+da4ed53f6a834e1bf57f@...kaller.appspotmail.com>
Cc: linux-kernel@...r.kernel.org,
	syzkaller-bugs@...glegroups.com
Subject: Re: [syzbot] [fuse?] WARNING in fuse_request_end

On Sat, 11 May 2024 00:42:19 -0700
> syzbot found the following issue on:
> 
> HEAD commit:    dccb07f2914c Merge tag 'for-6.9-rc7-tag' of git://git.kern..
> git tree:       upstream
> C reproducer:   https://syzkaller.appspot.com/x/repro.c?x=119603c0980000

#syz test https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git  dccb07f2914c

--- x/fs/fuse/dev.c
+++ y/fs/fuse/dev.c
@@ -1267,6 +1267,7 @@ static ssize_t fuse_dev_do_read(struct f
 
 	req = list_entry(fiq->pending.next, struct fuse_req, list);
 	clear_bit(FR_PENDING, &req->flags);
+	clear_bit(FR_SENT, &req->flags);
 	list_del_init(&req->list);
 	spin_unlock(&fiq->lock);
 
--