Re: Meet the bugs for linux-3.19-rc4 on aarch64 board

[Ding Tianhong]

On 2015/2/5 1:09, Catalin Marinas wrote:
> On Wed, Feb 04, 2015 at 03:17:25PM +0000, Ding Tianhong wrote:
>> bad mode in Synchronous Abort handler detected, code 0x86000005
>> CPU: 1 PID: 381 Comm: kworker/1:1 Tainted: G           O   3.19.0-rc4+ #6
>> Hardware name: Hisilicon Board ESL (DT)
>> Workqueue: events           (null)
>> task: ffffffc01cdb5800 ti: ffffffc01db28000 task.ti: ffffffc01db28000
>> PC is at 0x0
>> LR is at process_one_work+0x144/0x33c
> 
> This looks like process_one_work() tried to execute address 0, possibly
> when it does:
> 
> 	worker->current_func(work);
> 
>> Internal error: Oops - bad mode: 0 [#1] SMP
>> Modules linked in: sre(O)
>> CPU: 1 PID: 381 Comm: kworker/1:1 Tainted: G           O   3.19.0-rc4+ #6
>> Hardware name: Hisilicon Board ESL (DT)
>> Workqueue: events           (null)
> 
> So there is an "events" workqueue with a NULL function which
> process_one_work() tries to call. You could add some more debugging in
> this function or you could start bisecting (could check 3.18 first).
> 

ok, try it, thanks.

Ding


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