Re: Lockup in BTRFS_IOC_CLONE/Kernel 4.2.0-rc5

["Elias Probst" <mail@eliasprobst.eu>]

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On 08/08/2015 01:29 AM, Elias Probst wrote:
> On 08/07/2015 06:01 AM, Liu Bo wrote:
>> Could you do 'echo w > /proc/sysrq-trigger' to gather the whole hang call stack?
> 
> Thanks a lot for the feedback. Full call stack output is attached
> (pasting inline makes no sense due to the size of 2423 lines/135k).
> 
> In case VGER will strip attachments of this size, I made it available as
> a pastebin here: https://bpaste.net/show/e5e0fd4bbb9f
> 
> 
>> Here's a quick patch that may address your problem, can you give it a shot after
>> getting sysrq-w output?
> 
> Will rebuild now with your patch and keep you updated about the outcome.

So far I've been unable to reproduce the lockup using your patch on
4.2.0-rc6.

Thanks a lot!

- Elias



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