Re: WARNING in posix_cpu_timer_del

From: Thomas Gleixner
Date: Wed Aug 28 2019 - 07:11:45 EST


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