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From: "Denis V. Lunev" <den@openvz.org>
Cc: Amit Shah <amit.shah@redhat.com>,
	Paolo Bonzini <pbonzini@redhat.com>,
	qemu-devel@nongnu.org, Juan Quintela <quintela@redhat.com>
Subject: Re: [Qemu-devel] [PATCH v2 0/2] move qcow2_invalidate_cache() out of coroutine context
Date: Tue, 16 Feb 2016 08:56:56 +0300	[thread overview]
Message-ID: <56C2BA28.7020105@openvz.org> (raw)
In-Reply-To: <1455259174-3384-1-git-send-email-den@openvz.org>

On 02/12/2016 09:39 AM, Denis V. Lunev wrote:
> There is a possibility to hit an assert in qcow2_get_specific_info that
> s->qcow_version is undefined. This happens when VM in starting from
> suspended state, i.e. it processes incoming migration, and in the same
> time 'info block' is called.
>
> The problem is that qcow2_invalidate_cache() closes the image and
> memset()s BDRVQcowState in the middle.
>
> This operation should not be performed in coroutine context.
>
> Changes from v1:
> - fixed spelling. Eric, thank you for spell checking
>
> Signed-off-by: Denis V. Lunev <den@openvz.org>
> CC: Paolo Bonzini <pbonzini@redhat.com>
> CC: Juan Quintela <quintela@redhat.com>
> CC: Amit Shah <amit.shah@redhat.com>
>
ping

  parent reply	other threads:[~2016-02-16  5:57 UTC|newest]

Thread overview: 16+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2016-02-12  6:39 [Qemu-devel] [PATCH v2 0/2] move qcow2_invalidate_cache() out of coroutine context Denis V. Lunev
2016-02-12  6:39 ` [Qemu-devel] [PATCH 1/2] migration: move bdrv_invalidate_cache_all of " Denis V. Lunev
2016-02-23 12:54   ` Fam Zheng
2016-02-12  6:39 ` [Qemu-devel] [PATCH 2/2] " Denis V. Lunev
2016-02-12 12:50   ` Dr. David Alan Gilbert
2016-02-12 12:55     ` Paolo Bonzini
2016-02-12 16:25       ` Denis V. Lunev
2016-02-16  5:56 ` Denis V. Lunev [this message]
2016-02-18  5:17 ` [Qemu-devel] [PATCH v2 0/2] move qcow2_invalidate_cache() out " Amit Shah
2016-02-18  8:03   ` Denis V. Lunev
2016-02-18 14:54     ` Paolo Bonzini
2016-02-22  9:32       ` Amit Shah
2016-02-22  9:01   ` Denis V. Lunev
2016-02-23  7:39 ` Amit Shah
2016-02-23 10:47   ` Amit Shah
2016-02-23 12:39     ` Denis V. Lunev

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