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SubjectRe: cdbeb78c7a ("kernel/workqueue: Use dynamic lockdep keys for .."): WARNING: CPU: 0 PID: 0 at kernel/locking/lockdep.c:1002 lockdep_register_key
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On Mon, 2018-12-17 at 12:16 +0800, kernel test robot wrote:
> Greetings,
>
> 0day kernel testing robot got the below dmesg and the first bad commit is
>
> https://github.com/bvanassche/linux for-next
>
> commit cdbeb78c7a2e34af6d6cc5d3570a585a23eea8e9
> Author: Bart Van Assche <bvanassche@acm.org>
> AuthorDate: Fri Nov 9 09:53:31 2018 -0800
> Commit: Bart Van Assche <bvanassche@acm.org>
> CommitDate: Fri Dec 14 11:24:37 2018 -0800
>
> kernel/workqueue: Use dynamic lockdep keys for workqueues
>
> [ ... ]
>
> 60e521015c locking/lockdep: Add support for dynamic keys
> cdbeb78c7a kernel/workqueue: Use dynamic lockdep keys for workqueues
> 9294000d6d IB/srp: Drain the send queue before destroying a QP
> +-----------------------------------------------------------+------------+------------+---------------------+
> > | 60e521015c | cdbeb78c7a | bvanassche/for-next |
>
> +-----------------------------------------------------------+------------+------------+---------------------+
> > boot_successes | 915 | 305 | 0 |
> > boot_failures | 1 | 7 | 310 |
> > INFO:rcu_preempt_self-detected_stall_on_CPU | 1 | | |
> > EIP:smp_call_function_single | 1 | | |
> > BUG:kernel_hang_in_boot-around-mounting-root_stage | 1 | | |
> > WARNING:at_kernel/locking/lockdep.c:#lockdep_register_key | 0 | 7 | |
> > EIP:lockdep_register_key | 0 | 7 | |
> > WARNING:kernel_stack | 0 | 0 | 310 |
>
> +-----------------------------------------------------------+------------+------------+---------------------+

The "WARNING:at_kernel/locking/lockdep.c:#lockdep_register_key" warnings have
already been removed from my branch so I think this report can be ignored.

Bart.


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