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

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Date:   Mon, 23 Jan 2023 07:16:26 -0700
From:   Jens Axboe <axboe@...nel.dk>
To:     syzbot <syzbot+200ab9a0f030458682a9@...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_get_cqe_overflow

On 1/22/23 10:16 PM, syzbot wrote:
> Hello,
> 
> syzbot found the following issue on:
> 
> HEAD commit:    edb2f0dc90f2 Merge branch 'for-next/core' into for-kernelci
> git tree:       git://git.kernel.org/pub/scm/linux/kernel/git/arm64/linux.git for-kernelci
> console output: https://syzkaller.appspot.com/x/log.txt?x=11cb0589480000
> kernel config:  https://syzkaller.appspot.com/x/.config?x=a1c301efa2b11613
> dashboard link: https://syzkaller.appspot.com/bug?extid=200ab9a0f030458682a9
> compiler:       Debian clang version 13.0.1-++20220126092033+75e33f71c2da-1~exp1~20220126212112.63, GNU ld (GNU Binutils for Debian) 2.35.2
> userspace arch: arm64
> 
> Unfortunately, I don't have any reproducer for this issue yet.

#syz fix: io_uring/msg_ring: fix missing lock on overflow for IOPOLL

-- 
Jens Axboe