From: Jens Axboe <axboe@kernel.dk>
To: Thomas Gleixner <tglx@linutronix.de>,
Sebastian Andrzej Siewior <bigeasy@linutronix.de>
Cc: Peter Zijlstra <peterz@infradead.org>,
syzbot <syzbot+034246a838a10d181e78@syzkaller.appspotmail.com>,
andrealmeid@igalia.com, dave@stgolabs.net, dvhart@infradead.org,
linux-kernel@vger.kernel.org, mingo@redhat.com,
syzkaller-bugs@googlegroups.com
Subject: Re: [syzbot] [kernel?] general protection fault in try_to_wake_up (3)
Date: Tue, 9 Sep 2025 14:46:34 -0600 [thread overview]
Message-ID: <81a70994-8195-44a5-9da4-473c01197fe5@kernel.dk> (raw)
In-Reply-To: <875xdruzl4.ffs@tglx>
On 9/9/25 2:43 PM, Thomas Gleixner wrote:
> On Tue, Sep 09 2025 at 13:27, Jens Axboe wrote:
>> On 9/4/25 10:28 AM, Sebastian Andrzej Siewior wrote:
>> Was on the road, and now back at least for a day or two... So I took a
>> gander at this one too. One thing that puzzles me is the io_uring traces
>> in that syzbot log - if they are to be trusted, it only ever submits an
>> io_uring RECVMSG request? IOW, no futex usage on the io_uring side at
>> all?
>>
>> Going to try and download the disk image and kernel and see if I can
>> actually run this locally.
>
> It has nothing to do with IO/URING. It reproduces cleanly with the
> provided repro.syz. It just takes ages. The bisect log, which contains
> the IO/URING muck is irrelevant.
OK thanks for confirming!
--
Jens Axboe
next prev parent reply other threads:[~2025-09-09 20:46 UTC|newest]
Thread overview: 12+ messages / expand[flat|nested] mbox.gz Atom feed top
2025-09-02 20:54 syzbot
2025-09-02 21:46 ` Peter Zijlstra
2025-09-03 13:07 ` Sebastian Andrzej Siewior
2025-09-03 18:51 ` Jens Axboe
2025-09-04 16:28 ` Sebastian Andrzej Siewior
2025-09-09 18:56 ` Thomas Gleixner
2025-09-09 19:27 ` Jens Axboe
2025-09-09 20:43 ` Thomas Gleixner
2025-09-09 20:46 ` Jens Axboe [this message]
2025-09-10 10:42 ` [PATCH] futex: Prevent use-after-free during requeue-PI Sebastian Andrzej Siewior
2025-09-10 10:48 ` Sebastian Andrzej Siewior
2025-09-20 15:43 ` [tip: locking/urgent] " tip-bot2 for Sebastian Andrzej Siewior
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