linux-kernel - Re: WARNING in posix_cpu_timer

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Message-ID: <alpine.DEB.2.21.1908281309400.1869@nanos.tec.linutronix.de>
Date:   Wed, 28 Aug 2019 13:11:40 +0200 (CEST)
From:   Thomas Gleixner <tglx@...utronix.de>
To:     syzbot <syzbot+654f89dafed9092dac4d@...kaller.appspotmail.com>
cc:     linux-kernel@...r.kernel.org, syzkaller-bugs@...glegroups.com
Subject: Re: WARNING in posix_cpu_timer_del

On Tue, 27 Aug 2019, syzbot wrote:
> HEAD commit:    ed858b88 Add linux-next specific files for 20190826
> git tree:       linux-next
> console output: https://syzkaller.appspot.com/x/log.txt?x=130c2eca600000
> kernel config:  https://syzkaller.appspot.com/x/.config?x=ee8373cd9733e305
> dashboard link: https://syzkaller.appspot.com/bug?extid=654f89dafed9092dac4d
> compiler:       gcc (GCC) 9.0.0 20181231 (experimental)
> syz repro:      https://syzkaller.appspot.com/x/repro.syz?x=133cbeb6600000
> C reproducer:   https://syzkaller.appspot.com/x/repro.c?x=16e931ca600000
> 
> Bisection is inconclusive: the first bad commit could be any of:

It's this one:

> ce709abd posix-cpu-timers: Utilize timerqueue for storage

The issue got already spotted by review. The fix is folded back and the
cleaned up result will be in next as of tomorrow.

Thanks,

	tglx