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Message-ID: <cba736c2-2e5b-e433-2334-4e96624a8d5f@gmail.com>
Date: Mon, 26 Sep 2022 11:04:03 +0100
From: Pavel Begunkov <asml.silence@...il.com>
To: syzbot <syzbot+edfd15cd4246a3fc615a@...kaller.appspotmail.com>,
axboe@...nel.dk, io-uring@...r.kernel.org,
linux-kernel@...r.kernel.org, syzkaller-bugs@...glegroups.com
Subject: Re: [syzbot] KASAN: invalid-free in io_clean_op
On 9/25/22 18:54, Pavel Begunkov wrote:
> On 9/25/22 18:29, syzbot wrote:
>> Hello,
>>
>> syzbot found the following issue on:
>>
>> HEAD commit: aaa11ce2ffc8 Add linux-next specific files for 20220923
>> git tree: linux-next
>> console+strace: https://syzkaller.appspot.com/x/log.txt?x=1608cadf080000
>> kernel config: https://syzkaller.appspot.com/x/.config?x=186d1ff305f10294
>> dashboard link: https://syzkaller.appspot.com/bug?extid=edfd15cd4246a3fc615a
>> compiler: gcc (Debian 10.2.1-6) 10.2.1 20210110, GNU ld (GNU Binutils for Debian) 2.35.2
>> syz repro: https://syzkaller.appspot.com/x/repro.syz?x=144acdef080000
>> C reproducer: https://syzkaller.appspot.com/x/repro.c?x=10686540880000
>>
>> IMPORTANT: if you fix the issue, please add the following tag to the commit:
>> Reported-by: syzbot+edfd15cd4246a3fc615a@...kaller.appspotmail.com
>
> #syz test: git://git.kernel.dk/linux.git for-6.1/io_uring
Should be similar to the previous net/op_clean problem but
now zc and because of that we set CLEANUP too early. Just
a guess, will take a look at the repro
--
Pavel Begunkov
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