diff options
| author | Dexuan Cui <[email protected]> | 2019-05-07 07:46:55 +0000 |
|---|---|---|
| committer | Sasha Levin <[email protected]> | 2019-08-20 12:49:57 -0400 |
| commit | a9fc4340aee041dd186d1fb8f1b5d1e9caf28212 (patch) | |
| tree | 306ef60e4cfe64f9a058dba56de7f402fc12dcf9 | |
| parent | 89eb4d8d25722a0a0194cf7fa47ba602e32a6da7 (diff) | |
Drivers: hv: vmbus: Fix virt_to_hvpfn() for X86_PAE
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: [email protected]
Cc: Michael Kelley <[email protected]>
Reported-and-tested-by: Juliana Rodrigueiro <[email protected]>
Signed-off-by: Dexuan Cui <[email protected]>
Reviewed-by: Michael Kelley <[email protected]>
Signed-off-by: Sasha Levin <[email protected]>
| -rw-r--r-- | drivers/hv/channel.c | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/drivers/hv/channel.c b/drivers/hv/channel.c index 5f9505a087f6..23f358cb7f49 100644 --- a/drivers/hv/channel.c +++ b/drivers/hv/channel.c @@ -26,7 +26,7 @@ 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)) + |