From mboxrd@z Thu Jan 1 00:00:00 1970 From: Subject: Patch "[PATCH BACKPORT 3.10-3.15 3/4] MIPS: KVM: Fix gfn range check in kseg0 tlb faults" has been added to the 3.14-stable tree Date: Thu, 18 Aug 2016 11:47:00 +0200 Message-ID: <14715136205363@kroah.com> References: <86ad47b80d7285bab4b9bb144764d4ac1d4d1adf.1471021142.git-series.james.hogan@imgtec.com> Mime-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit Cc: , To: james.hogan@imgtec.com, gregkh@linuxfoundation.org, kvm@vger.kernel.org, linux-mips@linux-mips.org, pbonzini@redhat.com, ralf@linux-mips.org, rkrcmar@redhat.com, stable@vger.kernel.org Return-path: In-Reply-To: <86ad47b80d7285bab4b9bb144764d4ac1d4d1adf.1471021142.git-series.james.hogan@imgtec.com> Sender: stable-owner@vger.kernel.org List-Id: kvm.vger.kernel.org This is a note to let you know that I've just added the patch titled [PATCH BACKPORT 3.10-3.15 3/4] MIPS: KVM: Fix gfn range check in kseg0 tlb faults to the 3.14-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-3.14 subdirectory. If you, or anyone else, feels it should not be added to the stable tree, please let know about it. >>From james.hogan@imgtec.com Thu Aug 18 11:46:25 2016 From: James Hogan Date: Thu, 18 Aug 2016 10:22:54 +0100 Subject: [PATCH BACKPORT 3.10-3.15 3/4] MIPS: KVM: Fix gfn range check in kseg0 tlb faults To: Cc: James Hogan , Paolo Bonzini , Radim Krčmář , Ralf Baechle , , Message-ID: <86ad47b80d7285bab4b9bb144764d4ac1d4d1adf.1471021142.git-series.james.hogan@imgtec.com> From: James Hogan 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 Cc: Paolo Bonzini Cc: "Radim Krčmář" Cc: Ralf Baechle Cc: linux-mips@linux-mips.org Cc: kvm@vger.kernel.org Signed-off-by: Radim Krčmář [james.hogan@imgtec.com: Backport to v3.10.y - v3.15.y] Signed-off-by: James Hogan Signed-off-by: Greg Kroah-Hartman --- arch/mips/kvm/kvm_tlb.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) --- a/arch/mips/kvm/kvm_tlb.c +++ b/arch/mips/kvm/kvm_tlb.c @@ -285,7 +285,7 @@ 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(); Patches currently in stable-queue which might be from james.hogan@imgtec.com are queue-3.14/mips-kvm-add-missing-gfn-range-check.patch queue-3.14/mips-kvm-propagate-kseg0-mapped-tlb-fault-errors.patch queue-3.14/mips-kvm-fix-mapped-fault-broken-commpage-handling.patch queue-3.14/mips-kvm-fix-gfn-range-check-in-kseg0-tlb-faults.patch