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

From: Dexuan Cui decui@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@vger.kernel.org Cc: Michael Kelley mikelley@microsoft.com Reported-and-tested-by: Juliana Rodrigueiro juliana.rodrigueiro@intra2net.com Signed-off-by: Dexuan Cui decui@microsoft.com

Reviewed-by: Michael Kelley mikelley@microsoft.com