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From: Markus Armbruster <armbru@redhat.com>
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Date: Mon, 27 Mar 2017 20:23:07 +0200
In-Reply-To: <abc2a347-5f42-59c0-5f51-0f03bb2b3c6d@redhat.com> (Max Reitz's
	message of "Mon, 27 Mar 2017 18:12:37 +0200")
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Subject: Re: [Qemu-devel] [PATCH RFC v3 for-2.9 02/11] rbd: Fix to cleanly
 reject -drive without pool or image
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To: Max Reitz <mreitz@redhat.com>
Cc: qemu-devel@nongnu.org, kwolf@redhat.com, jdurgin@redhat.com, jcody@redhat.com

Max Reitz <mreitz@redhat.com> writes:

> On 27.03.2017 18:10, Max Reitz wrote:
>> On 27.03.2017 15:26, Markus Armbruster wrote:
>>> qemu_rbd_open() neglects to check pool and image are present.
>>> Reproducer:
>>>
>>>     $ qemu-system-x86_64 -nodefaults -drive if=none,driver=rbd,pool=p
>>>     Segmentation fault (core dumped)
>>>     $ qemu-system-x86_64 -nodefaults -drive if=none,driver=rbd,image=i
>>>     qemu-system-x86_64: -drive if=none,driver=rbd,image=i: error opening pool (null)
>>>
>>> Doesn't affect -drive with file=..., because qemu_rbd_parse_filename()
>>> always sets both pool and image.
>>>
>>> Doesn't affect -blockdev, because pool and image are mandatory in the
>>> QAPI schema.
>>>
>>> Fix by adding the missing checks.
>>>
>>> Signed-off-by: Markus Armbruster <armbru@redhat.com>
>>> Reviewed-by: Eric Blake <eblake@redhat.com>
>>> ---
>>>  block/rbd.c | 10 +++++++---
>>>  1 file changed, 7 insertions(+), 3 deletions(-)
>> 
>> Reviewed-by: Max Reitz <mreitz@redhat.com>
>
> That said, don't we have a similar issue with qemu_rbd_create()? It too
> doesn't check whether those options are given but I guess they're just
> as mandatory.

Looks like it.  I'll try to stick a fix into v4.

Thanks!