linux-kernel - [PATCH 0/3] KVM: x86: VM alloc bug fix and cleanup

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Message-Id: <20200127004113.25615-1-sean.j.christopherson@intel.com>
Date:   Sun, 26 Jan 2020 16:41:10 -0800
From:   Sean Christopherson <sean.j.christopherson@...el.com>
To:     Paolo Bonzini <pbonzini@...hat.com>
Cc:     Sean Christopherson <sean.j.christopherson@...el.com>,
        Vitaly Kuznetsov <vkuznets@...hat.com>,
        Wanpeng Li <wanpengli@...cent.com>,
        Jim Mattson <jmattson@...gle.com>,
        Joerg Roedel <joro@...tes.org>, kvm@...r.kernel.org,
        linux-kernel@...r.kernel.org
Subject: [PATCH 0/3] KVM: x86: VM alloc bug fix and cleanup

Fix a (fairly) long standing NULL pointer dereference if VM allocation
fails, and do a bit of clean up on top.

I would have preferred to omit patch 01, i.e. fix the bug via patch 02,
but unfortunately (long term support) kernel 4.19 doesn't have the
accounting changes, which would make backporting the fix extra annoying
for no real benefit.

Sean Christopherson (3):
  KVM: x86: Gracefully handle __vmalloc() failure during VM allocation
  KVM: x86: Directly return __vmalloc() result in ->vm_alloc()
  KVM: x86: Consolidate VM allocation and free for VMX and SVM

 arch/x86/include/asm/kvm_host.h | 12 ++++--------
 arch/x86/kvm/svm.c              | 15 ++++-----------
 arch/x86/kvm/vmx/vmx.c          | 16 ++++------------
 arch/x86/kvm/x86.c              |  7 +++++++
 4 files changed, 19 insertions(+), 31 deletions(-)

-- 
2.24.1