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

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Message-ID: <677c15ed.050a0220.3b3668.0016.GAE@google.com>
Date: Mon, 06 Jan 2025 09:42:05 -0800
From: syzbot <syzbot+2625ce08c2659fb9961a@...kaller.appspotmail.com>
To: 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] [fuse?] KASAN: slab-use-after-free Read in iov_iter_revert

Hello,

syzbot has tested the proposed patch and the reproducer did not trigger any issue:

Reported-by: syzbot+2625ce08c2659fb9961a@...kaller.appspotmail.com
Tested-by: syzbot+2625ce08c2659fb9961a@...kaller.appspotmail.com

Tested on:

commit:         78f2560f fuse: Set *nbytesp=0 in fuse_get_user_pages o..
git tree:       git://git.kernel.org/pub/scm/linux/kernel/git/mszeredi/fuse.git for-next
console output: https://syzkaller.appspot.com/x/log.txt?x=16eeb418580000
kernel config:  https://syzkaller.appspot.com/x/.config?x=a0669984e46cc674
dashboard link: https://syzkaller.appspot.com/bug?extid=2625ce08c2659fb9961a
compiler:       gcc (Debian 12.2.0-14) 12.2.0, GNU ld (GNU Binutils for Debian) 2.40

Note: no patches were applied.
Note: testing is done by a robot and is best-effort only.