| Message ID | 14715136428861@kroah.com (mailing list archive) |
|---|---|
| State | New, archived |
| Headers | show |
--- a/arch/mips/kvm/tlb.c +++ b/arch/mips/kvm/tlb.c @@ -276,7 +276,7 @@ int kvm_mips_handle_kseg0_tlb_fault(unsi } gfn = (KVM_GUEST_CPHYSADDR(badvaddr) >> PAGE_SHIFT); - if (gfn >= kvm->arch.guest_pmap_npages) { + if ((gfn | 1) >= kvm->arch.guest_pmap_npages) { kvm_err("%s: Invalid gfn: %#llx, BadVaddr: %#lx\n", __func__, gfn, badvaddr); kvm_mips_dump_host_tlbs();
This is a note to let you know that I've just added the patch titled [PATCH BACKPORT 3.17-4.4 3/4] MIPS: KVM: Fix gfn range check in kseg0 tlb faults to the 4.4-stable tree which can be found at: http://www.kernel.org/git/?p=linux/kernel/git/stable/stable-queue.git;a=summary The filename of the patch is: mips-kvm-fix-gfn-range-check-in-kseg0-tlb-faults.patch and it can be found in the queue-4.4 subdirectory. If you, or anyone else, feels it should not be added to the stable tree, please let <stable@vger.kernel.org> know about it. From james.hogan@imgtec.com Thu Aug 18 11:44:51 2016 From: James Hogan <james.hogan@imgtec.com> Date: Thu, 18 Aug 2016 10:05:31 +0100 Subject: [PATCH BACKPORT 3.17-4.4 3/4] MIPS: KVM: Fix gfn range check in kseg0 tlb faults To: <stable@vger.kernel.org> Cc: James Hogan <james.hogan@imgtec.com>, Paolo Bonzini <pbonzini@redhat.com>, Radim Krčmář <rkrcmar@redhat.com>, Ralf Baechle <ralf@linux-mips.org>, <linux-mips@linux-mips.org>, <kvm@vger.kernel.org> Message-ID: <2c09ac935cd3721a0212d82eca7f9290481d5b4c.1471018436.git-series.james.hogan@imgtec.com> From: James Hogan <james.hogan@imgtec.com> commit 0741f52d1b980dbeb290afe67d88fc2928edd8ab upstream. Two consecutive gfns are loaded into host TLB, so ensure the range check isn't off by one if guest_pmap_npages is odd. Fixes: 858dd5d45733 ("KVM/MIPS32: MMU/TLB operations for the Guest.") Signed-off-by: James Hogan <james.hogan@imgtec.com> Cc: Paolo Bonzini <pbonzini@redhat.com> Cc: "Radim Krčmář" <rkrcmar@redhat.com> Cc: Ralf Baechle <ralf@linux-mips.org> Cc: linux-mips@linux-mips.org Cc: kvm@vger.kernel.org Signed-off-by: Radim Krčmář <rkrcmar@redhat.com> [james.hogan@imgtec.com: Backport to v3.17.y - v4.4.y] Signed-off-by: James Hogan <james.hogan@imgtec.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org> --- arch/mips/kvm/tlb.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) Patches currently in stable-queue which might be from james.hogan@imgtec.com are queue-4.4/mips-kvm-add-missing-gfn-range-check.patch queue-4.4/mips-kvm-propagate-kseg0-mapped-tlb-fault-errors.patch queue-4.4/mips-kvm-fix-mapped-fault-broken-commpage-handling.patch queue-4.4/mips-kvm-fix-gfn-range-check-in-kseg0-tlb-faults.patch -- To unsubscribe from this list: send the line "unsubscribe kvm" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html