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 --- drivers/hv/channel.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/drivers/hv/channel.c b/drivers/hv/channel.c index 23381c41d087..aaaee5f93193 100644 --- a/drivers/hv/channel.c +++ b/drivers/hv/channel.c @@ -38,7 +38,7 @@

static unsigned long virt_to_hvpfn(void *addr) { - unsigned long paddr; + phys_addr_t paddr;

if (is_vmalloc_addr(addr)) paddr = page_to_phys(vmalloc_to_page(addr)) +