From: Kevin Wolf <kwolf@redhat.com>
To: P J P <ppandit@redhat.com>
Cc: Qinghao Tang <luodalongde@gmail.com>,
John Snow <jsnow@redhat.com>,
qemu-devel@nongnu.org, qemu-block@nongnu.org,
Prasad J Pandit <pjp@fedoraproject.org>
Subject: Re: [Qemu-devel] [Qemu-block] [PATCH v2] ide: ahci: reset ncq object to unused on error
Date: Mon, 11 Jan 2016 16:00:13 +0100 [thread overview]
Message-ID: <20160111150013.GB9454@noname.redhat.com> (raw)
In-Reply-To: <1452282511-4116-1-git-send-email-ppandit@redhat.com>
Am 08.01.2016 um 20:48 hat P J P geschrieben:
> From: Prasad J Pandit <pjp@fedoraproject.org>
>
> When processing NCQ commands, ACHI device emulation prepares a
s/ACHI/AHCI/
Can you still fix this in your tree, John?
Kevin
> NCQ transfer object; To which an aio control block(aiocb) object
> is assigned in 'execute_ncq_command'. In case, when the NCQ
> command is invalid, the 'aiocb' object is not assigned, and NCQ
> transfer object is left as 'used'. This leads to a use after
> free kind of error in 'bdrv_aio_cancel_async' via 'ahci_reset_port'.
> Reset NCQ transfer object to 'unused' to avoid it.
>
> Reported-by: Qinghao Tang <luodalongde@gmail.com>
> Signed-off-by: Prasad J Pandit <pjp@fedoraproject.org>
next prev parent reply other threads:[~2016-01-11 15:00 UTC|newest]
Thread overview: 7+ messages / expand[flat|nested] mbox.gz Atom feed top
2016-01-08 19:48 [Qemu-devel] [PATCH v2] ide: ahci: reset ncq object to unused on error P J P
2016-01-08 19:54 ` John Snow
2016-01-08 20:07 ` John Snow
2016-01-09 4:16 ` P J P
2016-01-11 15:00 ` Kevin Wolf [this message]
2016-01-11 16:28 ` [Qemu-devel] [Qemu-block] " John Snow
2016-01-11 17:09 ` P J P
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