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

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Message-ID: <67209987.050a0220.4735a.0258.GAE@google.com>
Date: Tue, 29 Oct 2024 01:15:03 -0700
From: syzbot <syzbot+7c48153a9d788824044b@...kaller.appspotmail.com>
To: aha310510@...il.com, brauner@...nel.org, dhowells@...hat.com, 
	hdanton@...a.com, jlayton@...nel.org, linux-fsdevel@...r.kernel.org, 
	linux-kernel@...r.kernel.org, linux-trace-kernel@...r.kernel.org, 
	mathieu.desnoyers@...icios.com, mhiramat@...nel.org, netfs@...ts.linux.dev, 
	oliver.sang@...el.com, rostedt@...dmis.org, stfrench@...rosoft.com, 
	syzkaller-bugs@...glegroups.com
Subject: Re: [syzbot] [netfs?] KASAN: slab-use-after-free Read in iov_iter_advance

syzbot suspects this issue was fixed by commit:

commit df9b455633aee0bad3e5c3dc9fc1c860b13c96d2
Author: David Howells <dhowells@...hat.com>
Date:   Thu Sep 26 13:58:30 2024 +0000

    netfs: Fix write oops in generic/346 (9p) and generic/074 (cifs)

bisection log:  https://syzkaller.appspot.com/x/bisect.txt?x=12c2eca7980000
start commit:   a430d95c5efa Merge tag 'lsm-pr-20240911' of git://git.kern..
git tree:       upstream
kernel config:  https://syzkaller.appspot.com/x/.config?x=d85e1e571a820894
dashboard link: https://syzkaller.appspot.com/bug?extid=7c48153a9d788824044b
syz repro:      https://syzkaller.appspot.com/x/repro.syz?x=1511a607980000
C reproducer:   https://syzkaller.appspot.com/x/repro.c?x=10c7d69f980000

If the result looks correct, please mark the issue as fixed by replying with:

#syz fix: netfs: Fix write oops in generic/346 (9p) and generic/074 (cifs)

For information about bisection process see: https://goo.gl/tpsmEJ#bisection