lists.openwall.net   lists  /  announce  owl-users  owl-dev  john-users  john-dev  passwdqc-users  yescrypt  popa3d-users  /  oss-security  kernel-hardening  musl  sabotage  tlsify  passwords  /  crypt-dev  xvendor  /  Bugtraq  Full-Disclosure  linux-kernel  linux-netdev  linux-ext4  linux-hardening  PHC 
Open Source and information security mailing list archives
 
Hash Suite: Windows password security audit tool. GUI, reports in PDF.
[<prev] [next>] [<thread-prev] [day] [month] [year] [list]
Date:   Sun, 31 Oct 2021 13:40:48 -0600
From:   Jens Axboe <axboe@...nel.dk>
To:     syzbot <syzbot+e4f5deeeccdd5a4873fe@...kaller.appspotmail.com>,
        asml.silence@...il.com, fweisbec@...il.com,
        io-uring@...r.kernel.org, linux-kernel@...r.kernel.org,
        mingo@...nel.org, syzkaller-bugs@...glegroups.com,
        tglx@...utronix.de, xiaoguang.wang@...ux.alibaba.com
Subject: Re: [syzbot] INFO: rcu detected stall in tctx_task_work

On 10/31/21 11:40 AM, syzbot wrote:
> Hello,
> 
> syzbot found the following issue on:
> 
> HEAD commit:    bdcc9f6a5682 Add linux-next specific files for 20211029
> git tree:       linux-next
> console output: https://syzkaller.appspot.com/x/log.txt?x=10be38f4b00000
> kernel config:  https://syzkaller.appspot.com/x/.config?x=4b504bcb4c507265
> dashboard link: https://syzkaller.appspot.com/bug?extid=e4f5deeeccdd5a4873fe
> 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=10b915d4b00000
> C reproducer:   https://syzkaller.appspot.com/x/repro.c?x=1395f3e2b00000
> 
> The issue was bisected to:
> 
> commit 34ced75ca1f63fac6148497971212583aa0f7a87
> Author: Xiaoguang Wang <xiaoguang.wang@...ux.alibaba.com>
> Date:   Mon Oct 25 05:38:48 2021 +0000
> 
>     io_uring: reduce frequent add_wait_queue() overhead for multi-shot poll request

This was dropped from the tree last week:

#syz invalid

-- 
Jens Axboe

Powered by blists - more mailing lists