linux-kernel - Re: [syzbot] [netfs?] KASAN: slab-use-after-free Read in iov_iter

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Message-ID: <67786ea9.050a0220.7f35c.0000.GAE@google.com>
Date: Fri, 03 Jan 2025 15:11:37 -0800
From: syzbot <syzbot+2625ce08c2659fb9961a@...kaller.appspotmail.com>
To: joannelkoong@...il.com
Cc: dhowells@...hat.com, jlayton@...nel.org, joannelkoong@...il.com, 
	josef@...icpanda.com, linux-fsdevel@...r.kernel.org, 
	linux-kernel@...r.kernel.org, miklos@...redi.hu, mszeredi@...hat.com, 
	netfs@...ts.linux.dev, syzkaller-bugs@...glegroups.com
Subject: Re: [syzbot] [netfs?] KASAN: slab-use-after-free Read in iov_iter_revert

> On Thu, Jan 2, 2025 at 12:19 PM syzbot
> <syzbot+2625ce08c2659fb9961a@...kaller.appspotmail.com> wrote:
>>
>> > #syz test git://git.kernel.org/pub/scm/linux/kernel/git/mszeredi/fuse.git
>>
>> want either no args or 2 args (repo, branch), got 1
>>
>> > 7a4f5418
>
> Sorry for the late reply on this Miklos, didn't realize this was
> related to my "convert direct io to use folios" change.
>
> I think Bernd's fix in 78f2560fc ("fuse: Set *nbytesp=0 in
> fuse_get_user_pages on allocation failure") should have fixed this?
>
> #syz test git://git.kernel.org/pub/scm/linux/kernel/git/mszeredi/fuse.git

want either no args or 2 args (repo, branch), got 1

> for-next