linux-kernel - Re: [syzbot] [io-uring?] [usb?] WARNING in io_get_cqe

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Message-ID: <0daae856-a3c6-4eff-95cc-e39674f24d41@kernel.dk>
Date: Mon, 4 Nov 2024 10:03:27 -0700
From: Jens Axboe <axboe@...nel.dk>
To: Pavel Begunkov <asml.silence@...il.com>,
 syzbot <syzbot+e333341d3d985e5173b2@...kaller.appspotmail.com>,
 io-uring@...r.kernel.org, linux-kernel@...r.kernel.org,
 linux-usb@...r.kernel.org, syzkaller-bugs@...glegroups.com
Subject: Re: [syzbot] [io-uring?] [usb?] WARNING in io_get_cqe_overflow (2)

On 11/4/24 9:54 AM, Pavel Begunkov wrote:
> On 11/4/24 15:43, Jens Axboe wrote:
>> On 11/4/24 8:34 AM, Pavel Begunkov wrote:
>>> On 11/4/24 15:27, Pavel Begunkov wrote:
> ...
>>> Regardless, the rule with sth like that should be simpler,
>>> i.e. a ctx is getting killed => everything is run from fallback/kthread.
>>
>> I like it, and now there's another reason to do it. Can you out the
>> patch?
> 
> Let's see if it works, hopefully will try today.

I already tried it here fwiw, does fix the issue (as expected) and it
passes the full testing too.

-- 
Jens Axboe