From: Thomas Gleixner <tglx@linutronix.de>
To: syzbot <syzbot+c4521ac872a4ccc3afec@syzkaller.appspotmail.com>
Cc: alexander.h.duyck@intel.com, amritha.nambiar@intel.com,
andriy.shevchenko@linux.intel.com, davem@davemloft.net,
dmitry.torokhov@gmail.com, f.fainelli@gmail.com,
gregkh@linuxfoundation.org, idosch@mellanox.com,
linux-kernel@vger.kernel.org, netdev@vger.kernel.org,
syzkaller-bugs@googlegroups.com, tyhicks@canonical.com,
wanghai26@huawei.com, yuehaibing@huawei.com
Subject: Re: WARNING: ODEBUG bug in netdev_freemem (2)
Date: Mon, 24 Jun 2019 11:33:56 +0200 (CEST) [thread overview]
Message-ID: <alpine.DEB.2.21.1906241130100.32342@nanos.tec.linutronix.de> (raw)
In-Reply-To: <000000000000d6a8ba058c0df076@google.com>
On Mon, 24 Jun 2019, syzbot wrote:
> Hello,
>
> syzbot found the following crash on:
>
> HEAD commit: fd6b99fa Merge branch 'akpm' (patches from Andrew)
> git tree: upstream
> console output: https://syzkaller.appspot.com/x/log.txt?x=144de256a00000
> kernel config: https://syzkaller.appspot.com/x/.config?x=fa9f7e1b6a8bb586
> dashboard link: https://syzkaller.appspot.com/bug?extid=c4521ac872a4ccc3afec
> compiler: gcc (GCC) 9.0.0 20181231 (experimental)
>
> Unfortunately, I don't have any reproducer for this crash yet.
>
> IMPORTANT: if you fix the bug, please add the following tag to the commit:
> Reported-by: syzbot+c4521ac872a4ccc3afec@syzkaller.appspotmail.com
>
> device hsr_slave_0 left promiscuous mode
> team0 (unregistering): Port device team_slave_1 removed
> team0 (unregistering): Port device team_slave_0 removed
> bond0 (unregistering): Releasing backup interface bond_slave_1
> bond0 (unregistering): Releasing backup interface bond_slave_0
> bond0 (unregistering): Released all slaves
> ------------[ cut here ]------------
> ODEBUG: free active (active state 0) object type: timer_list hint:
> delayed_work_timer_fn+0x0/0x90 arch/x86/include/asm/paravirt.h:767
One of the cleaned up devices has left an active timer which belongs to a
delayed work. That's all I can decode out of that splat. :(
Thanks,
tglx
next prev parent reply other threads:[~2019-06-24 9:34 UTC|newest]
Thread overview: 9+ messages / expand[flat|nested] mbox.gz Atom feed top
2019-06-24 8:53 WARNING: ODEBUG bug in netdev_freemem (2) syzbot
2019-06-24 9:33 ` Thomas Gleixner [this message]
2019-06-24 10:54 ` Dmitry Vyukov
2019-06-24 12:08 ` Eric Dumazet
2019-06-24 12:22 ` Dmitry Vyukov
2019-06-24 13:18 ` Thomas Gleixner
2019-06-24 17:27 ` Thomas Gleixner
2019-08-08 0:25 ` syzbot
2019-08-12 19:45 ` Thomas Gleixner
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