From: Jens Axboe <axboe@kernel.dk>
To: Glauber Costa <glauber@scylladb.com>,
io-uring@vger.kernel.org, Avi Kivity <avi@scylladb.com>,
Peter Zijlstra <peterz@infradead.org>
Subject: Re: Crash on using the poll ring
Date: Fri, 21 Feb 2020 06:51:32 -0800 [thread overview]
Message-ID: <97074e5b-896e-6bd5-3c6e-bfa38bf522c4@kernel.dk> (raw)
In-Reply-To: <CAD-J=zbKXuF1HCd5yG0oNaizNWZTD3248Oii7xoofQ--EqO3dw@mail.gmail.com>
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.
--
Jens Axboe
next prev parent reply other threads:[~2020-02-21 14:51 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 [this message]
2020-02-21 19:04 ` Jens Axboe
2020-02-21 19:51 ` Glauber Costa
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