linux-kernel - Re: [syzbot] WARNING in io_cqring_overflow

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Date:   Wed, 21 Dec 2022 07:14:45 -0700
From:   Jens Axboe <axboe@...nel.dk>
To:     syzbot <syzbot+cf6ea1d6bb30a4ce10b2@...kaller.appspotmail.com>,
        asml.silence@...il.com, io-uring@...r.kernel.org,
        linux-kernel@...r.kernel.org, syzkaller-bugs@...glegroups.com
Subject: Re: [syzbot] WARNING in io_cqring_overflow_flush

On 12/20/22 9:24 PM, syzbot wrote:
> Hello,
> 
> syzbot found the following issue on:
> 
> HEAD commit:    77856d911a8c Merge tag 'arm64-fixes' of git://git.kernel.o..
> git tree:       upstream
> console+strace: https://syzkaller.appspot.com/x/log.txt?x=13e722d7880000
> kernel config:  https://syzkaller.appspot.com/x/.config?x=334a10f27a9ee2e0
> dashboard link: https://syzkaller.appspot.com/bug?extid=cf6ea1d6bb30a4ce10b2
> 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=112eeb13880000
> C reproducer:   https://syzkaller.appspot.com/x/repro.c?x=16b78bdb880000
> 
> Downloadable assets:
> disk image: https://storage.googleapis.com/syzbot-assets/84863f051feb/disk-77856d91.raw.xz
> vmlinux: https://storage.googleapis.com/syzbot-assets/87614e2a8a26/vmlinux-77856d91.xz
> kernel image: https://storage.googleapis.com/syzbot-assets/cb76bad63a90/bzImage-77856d91.xz
> 
> IMPORTANT: if you fix the issue, please add the following tag to the commit:
> Reported-by: syzbot+cf6ea1d6bb30a4ce10b2@...kaller.appspotmail.com

#syz test: git://git.kernel.dk/linux.git io_uring-6.2

-- 
Jens Axboe