[PATCH] Drivers: hv: vmbus: Fix virt_to_hvpfn() for X86_PAE

Sasha Levin sashal at kernel.org
Thu May 9 01:06:00 UTC 2019


On Tue, May 07, 2019 at 12:51:51PM +0000, Michael Kelley wrote:
>From: Dexuan Cui <decui at microsoft.com> Sent: Tuesday, May 7, 2019 12:47 AM
>>
>> In the case of X86_PAE, unsigned long is u32, but the physical address type
>> should be u64. Due to the bug here, the netvsc driver can not load
>> successfully, and sometimes the VM can panic due to memory corruption (the
>> hypervisor writes data to the wrong location).
>>
>> Fixes: 6ba34171bcbd ("Drivers: hv: vmbus: Remove use of slow_virt_to_phys()")
>> Cc: stable at vger.kernel.org
>> Cc: Michael Kelley <mikelley at microsoft.com>
>> Reported-and-tested-by: Juliana Rodrigueiro <juliana.rodrigueiro at intra2net.com>
>> Signed-off-by: Dexuan Cui <decui at microsoft.com>
>
>Reviewed-by:  Michael Kelley <mikelley at microsoft.com>

Queued for hyperv-fixes, thanks!

--
Thanks,
Sasha


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