On 07.11.2019 01:05, Alexander Popov wrote:
> On 06.11.2019 15:05, Michael S. Tsirkin wrote:
>> Do you want to cook up a patch like this then?
>
> Yes, I will take this task and return with a patch.
>
> Thanks!
I've just sent the v2 of the patch.
Looking forward to your feedback.
Best regards,
On 06.11.2019 15:05, Michael S. Tsirkin wrote:
> On Thu, Jul 25, 2019 at 08:25:03PM -0400, John Snow wrote:
>>
>>
>> On 7/5/19 10:07 AM, Alexander Popov wrote:
>>> This assertion was introduced in the commit a718978ed58a in July 2015.
>>> It implies that the size of successful DMA transfers handled
On 06.11.2019 15:08, Michael S. Tsirkin wrote:
> On Wed, Nov 06, 2019 at 01:17:51PM +0300, Alexander Popov wrote:
>> On 27.07.2019 00:09, Alexander Popov wrote:
>>> On 26.07.2019 2:25:03 GMT+02:00, John Snow wrote:
Oh, this is fun.
>>> ...
I can worry about a proper fix for 4.2+.
>>>
>>>
On Wed, Nov 06, 2019 at 01:17:51PM +0300, Alexander Popov wrote:
> On 27.07.2019 00:09, Alexander Popov wrote:
> > On 26.07.2019 2:25:03 GMT+02:00, John Snow wrote:
> >> Oh, this is fun.
> > ...
> >> I can worry about a proper fix for 4.2+.
> >
> > Hello John,
> >
> > Thanks for your letter.
> >
>
On Thu, Jul 25, 2019 at 08:25:03PM -0400, John Snow wrote:
>
>
> On 7/5/19 10:07 AM, Alexander Popov wrote:
> > This assertion was introduced in the commit a718978ed58a in July 2015.
> > It implies that the size of successful DMA transfers handled in
> > ide_dma_cb() should be multiple of 512 (th
On 27.07.2019 00:09, Alexander Popov wrote:
> On 26.07.2019 2:25:03 GMT+02:00, John Snow wrote:
>> Oh, this is fun.
> ...
>> I can worry about a proper fix for 4.2+.
>
> Hello John,
>
> Thanks for your letter.
>
> I double-checked the git history and mailing list, I'm still sure
> that my fix for
26 июля 2019 г. 2:25:03 GMT+02:00, John Snow пишет:
>Oh, this is fun.
...
>I can worry about a proper fix for 4.2+.
Hello John,
Thanks for your letter.
I double-checked the git history and mailing list, I'm still sure
that my fix for this assertion is correct.
You know this code very wel
On 7/5/19 10:07 AM, Alexander Popov wrote:
> This assertion was introduced in the commit a718978ed58a in July 2015.
> It implies that the size of successful DMA transfers handled in
> ide_dma_cb() should be multiple of 512 (the size of a sector).
>
> But guest systems can initiate DMA transfers
+-- On Tue, 16 Jul 2019, John Snow wrote --+
| I also feel that a privileged DOS by a guest of a legacy device is actually
| low priority security-wise, unless we can demonstrate that there are side
| effects that can be exploited.
Right, we are not treating this as a CVE issue as is. Privileged
On 7/16/19 7:25 AM, Kevin Wolf wrote:
> Am 15.07.2019 um 13:24 hat Alexander Popov geschrieben:
>> On 05.07.2019 17:07, Alexander Popov wrote:
>>> This assertion was introduced in the commit a718978ed58a in July 2015.
>>> It implies that the size of successful DMA transfers handled in
>>> ide_dm
Am 15.07.2019 um 13:24 hat Alexander Popov geschrieben:
> On 05.07.2019 17:07, Alexander Popov wrote:
> > This assertion was introduced in the commit a718978ed58a in July 2015.
> > It implies that the size of successful DMA transfers handled in
> > ide_dma_cb() should be multiple of 512 (the size o
On 05.07.2019 17:07, Alexander Popov wrote:
> This assertion was introduced in the commit a718978ed58a in July 2015.
> It implies that the size of successful DMA transfers handled in
> ide_dma_cb() should be multiple of 512 (the size of a sector).
>
> But guest systems can initiate DMA transfers t
This assertion was introduced in the commit a718978ed58a in July 2015.
It implies that the size of successful DMA transfers handled in
ide_dma_cb() should be multiple of 512 (the size of a sector).
But guest systems can initiate DMA transfers that don't fit this
requirement. Let's improve the asse
On 05.07.2019 17:07, Alexander Popov wrote:
> This assertion was introduced in the commit a718978ed58a in July 2015.
> It implies that the size of successful DMA transfers handled in
> ide_dma_cb() should be multiple of 512 (the size of a sector).
>
> But guest systems can initiate DMA transfers t
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