Re: Lockup in BTRFS_IOC_CLONE/Kernel 4.2.0-rc5

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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.

Thanks a lot again!

- Elias



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