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KVM: lapic: Check for in-kernel LAPIC before deferencing apic pointer
authorSean Christopherson <sean.j.christopherson@intel.com>
Fri, 26 Apr 2019 02:01:09 +0000 (19:01 -0700)
committerPaolo Bonzini <pbonzini@redhat.com>
Tue, 30 Apr 2019 19:22:15 +0000 (21:22 +0200)
commitb904cb8dff824b79233e82c078837627ebd52717
tree52455de1292a96b7b5d65f0b99556cfe69422d3dtree
parent76d58e0f07ec203bbdfcaabd9a9fc10a5a3ed5eacommit | diff
KVM: lapic: Check for in-kernel LAPIC before deferencing apic pointer

...to avoid dereferencing a null pointer when querying the per-vCPU
timer advance.

Fixes: 39497d7660d98 ("KVM: lapic: Track lapic timer advance per vCPU")
Reported-by: syzbot+f7e65445a40d3e0e4ebf@syzkaller.appspotmail.com
Signed-off-by: Sean Christopherson <sean.j.christopherson@intel.com>
Reviewed-by: Konrad Rzeszutek Wilk <konrad.wilk@oracle.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
arch/x86/kvm/lapic.c diff | blob | history
arch/x86/kvm/x86.c diff | blob | history
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