From: Jens Axboe <axboe@kernel.dk>
To: syzbot <syzbot+46b0888255f68622d309@syzkaller.appspotmail.com>,
adilger.kernel@dilger.ca, asml.silence@gmail.com,
linux-ext4@vger.kernel.org, linux-kernel@vger.kernel.org,
syzkaller-bugs@googlegroups.com, tytso@mit.edu
Subject: Re: [syzbot] [ext4?] KASAN: use-after-free Read in ext4_inlinedir_to_tree
Date: Thu, 29 Aug 2024 04:39:39 -0600 [thread overview]
Message-ID: <b8b52b57-c80b-4165-8a99-ff5f40cda41d@kernel.dk> (raw)
In-Reply-To: <000000000000d133670620c640fe@google.com>
On 8/28/24 4:55 PM, syzbot wrote:
> Hello,
>
> syzbot found the following issue on:
>
> HEAD commit: d2bafcf224f3 Merge tag 'cgroup-for-6.11-rc4-fixes' of git:..
> git tree: upstream
> console output: https://syzkaller.appspot.com/x/log.txt?x=1660edd5980000
> kernel config: https://syzkaller.appspot.com/x/.config?x=4fc2afd52fd008bb
> dashboard link: https://syzkaller.appspot.com/bug?extid=46b0888255f68622d309
> compiler: Debian clang version 15.0.6, GNU ld (GNU Binutils for Debian) 2.40
> syz repro: https://syzkaller.appspot.com/x/repro.syz?x=15d4ae09980000
> C reproducer: https://syzkaller.appspot.com/x/repro.c?x=158d6609980000
>
> Downloadable assets:
> disk image: https://storage.googleapis.com/syzbot-assets/7569f02310fb/disk-d2bafcf2.raw.xz
> vmlinux: https://storage.googleapis.com/syzbot-assets/e30fee7b6c1d/vmlinux-d2bafcf2.xz
> kernel image: https://storage.googleapis.com/syzbot-assets/2ffddebac153/bzImage-d2bafcf2.xz
> mounted in repro: https://storage.googleapis.com/syzbot-assets/e4fb4afad539/mount_0.gz
>
> The issue was bisected to:
>
> commit e5598d6ae62626d261b046a2f19347c38681ff51
> Author: Pavel Begunkov <asml.silence@gmail.com>
> Date: Thu Aug 24 22:53:31 2023 +0000
>
> io_uring: compact SQ/CQ heads/tails
As mentioned before, this bisection result is clearly bogus.
--
Jens Axboe
prev parent reply other threads:[~2024-08-29 10:39 UTC|newest]
Thread overview: 2+ messages / expand[flat|nested] mbox.gz Atom feed top
2024-08-28 22:55 [syzbot] [ext4?] KASAN: use-after-free Read in ext4_inlinedir_to_tree syzbot
2024-08-29 10:39 ` Jens Axboe [this message]
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