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Re: [Qemu-block] [Qemu-devel] [PATCH] quorum: Fix crash in quorum_aio_cb

From: Changlong Xie
Subject: Re: [Qemu-block] [Qemu-devel] [PATCH] quorum: Fix crash in quorum_aio_cb()
Date: Mon, 14 Mar 2016 09:57:31 +0800
User-agent: Mozilla/5.0 (X11; Linux x86_64; rv:31.0) Gecko/20100101 Thunderbird/31.7.0

On 03/11/2016 04:25 PM, Alberto Garcia wrote:
On Fri 11 Mar 2016 02:31:31 AM CET, Wen Congyang wrote:
On 03/10/2016 08:13 PM, Alberto Garcia wrote:
quorum_aio_cb() emits the QUORUM_REPORT_BAD event if there's
an I/O error in a Quorum child. However sacb->aiocb must be
correctly initialized for this to happen. read_quorum_children() and
read_fifo_child() are not doing this, which results in a QEMU crash.

If we use FIFO mode, we don't call quorum_report_bad() in
quorum_aio_cb().  But it is OK to iniialize sacb->aiocb for it.

Hi betro

You're right. I still think it's a good idea to leave it initialized in
case we change that in the future.


And now that we're at it, shouldn't we call quorum_report_bad() in FIFO
mode as well? Or is there any reason not to do it?

IMO, no reason not to do it.



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