Re: [PATCH] KVM: arm64: Pass the actual page address to mte_clear_page_tags()
From: Anshuman Khandual <hidden>
Date: 2023-01-20 12:10:03
Also in:
kvmarm
On 1/19/23 22:39, Catalin Marinas wrote:
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@arm.com>
Cc: Marc Zyngier <maz@kernel.org>Reviewed-by: Anshuman Khandual <redacted>
quoted hunk ↗ jump to hunk
--- 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);_______________________________________________ linux-arm-kernel mailing list linux-arm-kernel@lists.infradead.org http://lists.infradead.org/mailman/listinfo/linux-arm-kernel
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