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From: Thomas Gleixner <tglx@linutronix.de>
To: syzbot <syzbot+51c9bdfa559769d2f897@syzkaller.appspotmail.com>,
	akpm@linux-foundation.org, anna.schumaker@netapp.com,
	bfields@fieldses.org, bp@alien8.de, davem@davemloft.net,
	douly.fnst@cn.fujitsu.com, hpa@zytor.com, jlayton@kernel.org,
	konrad.wilk@oracle.com, len.brown@intel.com,
	linux-kernel@vger.kernel.org, linux-nfs@vger.kernel.org,
	mingo@kernel.org, mingo@redhat.com, netdev@vger.kernel.org,
	paulmck@kernel.org, peterz@infradead.org, puwen@hygon.cn,
	rafael.j.wysocki@intel.com, syzkaller-bugs@googlegroups.com,
	trond.myklebust@hammerspace.com, trond.myklebust@primarydata.com,
	vbabka@suse.cz, x86@kernel.org,
	David Howells <dhowells@redhat.com>
Subject: Re: WARNING: ODEBUG bug in __do_softirq
Date: Wed, 26 Aug 2020 13:03:02 +0200	[thread overview]
Message-ID: <87v9h5vfdl.fsf@nanos.tec.linutronix.de> (raw)
In-Reply-To: <000000000000e7fab005adc3f636@google.com>

On Wed, Aug 26 2020 at 01:54, syzbot wrote:

Cc+: David Howells

> syzbot has found a reproducer for the following issue on:
>
> HEAD commit:    3a00d3df Add linux-next specific files for 20200825
> git tree:       linux-next
> console output: https://syzkaller.appspot.com/x/log.txt?x=15080fa9900000
> kernel config:  https://syzkaller.appspot.com/x/.config?x=9ef0a5f95935d447
> dashboard link: https://syzkaller.appspot.com/bug?extid=51c9bdfa559769d2f897
> compiler:       gcc (GCC) 10.1.0-syz 20200507
> syz repro:      https://syzkaller.appspot.com/x/repro.syz?x=17927a2e900000
> C reproducer:   https://syzkaller.appspot.com/x/repro.c?x=132b8ede900000
>
> The issue was bisected to:
>
> commit 5b317cbf2bcb85a1e96ce87717cb991ecab1dd4d
> Author: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
> Date:   Fri Feb 22 09:17:11 2019 +0000
>
>     Merge branch 'pm-cpufreq-fixes'
>
> bisection log:  https://syzkaller.appspot.com/x/bisect.txt?x=171ead5d200000
> final oops:     https://syzkaller.appspot.com/x/report.txt?x=149ead5d200000
> console output: https://syzkaller.appspot.com/x/log.txt?x=109ead5d200000
>
> IMPORTANT: if you fix the issue, please add the following tag to the commit:
> Reported-by: syzbot+51c9bdfa559769d2f897@syzkaller.appspotmail.com
> Fixes: 5b317cbf2bcb ("Merge branch 'pm-cpufreq-fixes'")
>
> ------------[ cut here ]------------
> ODEBUG: free active (active state 0) object type: work_struct hint: afs_manage_cell+0x0/0x11c0 fs/afs/cell.c:498

AFS is leaking an active work struct in a to be freed data struct.

Thanks,

        tglx

      reply	other threads:[~2020-08-26 11:03 UTC|newest]

Thread overview: 6+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2018-02-17  8:15 WARNING: ODEBUG bug in __do_softirq syzbot
2018-06-29  8:58 ` syzbot
2019-04-02  5:04 ` syzbot
2019-04-02  8:26   ` Borislav Petkov
2020-08-26  8:54 ` syzbot
2020-08-26 11:03   ` Thomas Gleixner [this message]

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