[PATCH] KVM: arm64: Pass the actual page address to mte_clear_page_tags()
Catalin Marinas
catalin.marinas at arm.com
Thu Jan 19 09:09:02 PST 2023
Commit d77e59a8fccd ("arm64: mte: Lock a page for MTE tag
initialisation") added a call to mte_clear_page_tags() in case a
prior mte_copy_tags_from_user() failed in order to avoid stale tags in
the guest page (it should have really been a separate commit).
Unfortunately, the argument passed to this function was the address of
the struct page rather than the actual page address. Fix this function
call.
Fixes: d77e59a8fccd ("arm64: mte: Lock a page for MTE tag initialisation")
Signed-off-by: Catalin Marinas <catalin.marinas at arm.com>
Cc: Marc Zyngier <maz at kernel.org>
---
arch/arm64/kvm/guest.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/arch/arm64/kvm/guest.c b/arch/arm64/kvm/guest.c
index 5626ddb540ce..cf4c495a4321 100644
--- a/arch/arm64/kvm/guest.c
+++ b/arch/arm64/kvm/guest.c
@@ -1079,7 +1079,7 @@ long kvm_vm_ioctl_mte_copy_tags(struct kvm *kvm,
/* uaccess failed, don't leave stale tags */
if (num_tags != MTE_GRANULES_PER_PAGE)
- mte_clear_page_tags(page);
+ mte_clear_page_tags(maddr);
set_page_mte_tagged(page);
kvm_release_pfn_dirty(pfn);
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