On 29.09.2020 08:48, Jason Yan wrote:
> When USE_SPLIT_PTE_PTLOCKS is false, xen_pte_lock() actually do nothing
> but returns NULL. So xen_pte_unlock() should not actually unlock.
> Otherwise a NULL pointer dereference will be triggered.
>
> Fixes: 74260714c56d ("xen: lock pte pages while pinning/
When USE_SPLIT_PTE_PTLOCKS is false, xen_pte_lock() actually do nothing
but returns NULL. So xen_pte_unlock() should not actually unlock.
Otherwise a NULL pointer dereference will be triggered.
Fixes: 74260714c56d ("xen: lock pte pages while pinning/unpinning")
Signed-off-by: Jason Yan
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arch/