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From: Jens Axboe <[email protected]>
To: Glauber Costa <[email protected]>,
	[email protected], Avi Kivity <[email protected]>,
	Peter Zijlstra <[email protected]>
Subject: Re: Crash on using the poll ring
Date: Fri, 21 Feb 2020 11:04:13 -0800	[thread overview]
Message-ID: <[email protected]> (raw)
In-Reply-To: <[email protected]>

On 2/21/20 7:51 AM, Jens Axboe wrote:
> On 2/21/20 6:17 AM, Glauber Costa wrote:
>> Hi
>>
>> Today I found a crash when adding code for the poll ring to my implementation.
>> Kernel is 2b58a38ef46e91edd68eec58bdb817c42474cad6
>>
>> Here's how to reproduce:
>>
>> code at
>> https://github.com/glommer/seastar.git branch poll-ring
>>
>> 1. same as previous steps to configure seastar, but compile with:
>> ninja -C build/release apps/io_tester/io_tester
>>
>> 2. Download the yaml file attached
>>
>> 3. Run with:
>>
>> ./build/release/apps/io_tester/io_tester --conf ~/test.yaml --duration
>> 15 --directory /var/disk1  --reactor-backend=uring --smp 1
>>
>> (directory must be on xfs because we do c++ but we're not savages)
> 
> This is due to killing the dummy callback function on the task work.
> I'll play with this a bit and see how we can fix it.

I re-did the code to use task_works instead, can you try the current
one? Same branch, sha is currently 9ba3cd1b8923.

-- 
Jens Axboe


  reply	other threads:[~2020-02-21 19:04 UTC|newest]

Thread overview: 4+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2020-02-21 13:17 Crash on using the poll ring Glauber Costa
2020-02-21 14:51 ` Jens Axboe
2020-02-21 19:04   ` Jens Axboe [this message]
2020-02-21 19:51     ` Glauber Costa

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