Re: block: hung task writing to device

From	Jens Axboe <axboe@kernel.dk>
Newsgroups	linux.kernel
Subject	Re: block: hung task writing to device
Date	2017-07-10 18:10 +0200
Message-ID	<u1Jq2-7dI-25@gated-at.bofh.it> (permalink)
References	<u13h8-63v-21@gated-at.bofh.it>
Organization	linux.* mail to news gateway

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On 07/08/2017 01:06 PM, Levin, Alexander (Sasha Levin) wrote:
> Hi all,
> 
> syzkaller seems to be hitting a lockup with the reproducer below:
> 
> INFO: task syzkaller490361:8788 blocked for more than 120 seconds.
>      Not tainted 4.12.0-next-20170706+ #186
> "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
> syzkaller490361 D18312  8788   5843 0x00080004
> Call Trace:

I've run this for about an hour now, with mq-deadline and a regular SATA
drive, and it's still chugging along. I need to know more about your
setup.

-- 
Jens Axboe

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block: hung task writing to device "Levin, Alexander (Sasha Levin)" <alexander.levin@verizon.com> - 2017-07-08 21:10 +0200
  Re: block: hung task writing to device Jens Axboe <axboe@kernel.dk> - 2017-07-09 03:30 +0200
  Re: block: hung task writing to device Jens Axboe <axboe@kernel.dk> - 2017-07-10 18:10 +0200

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