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* Fix NULL pointer read on ioctl(KVM_CHECK_EXTENSION) for /dev/kvm.
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Merge tag 'for-linus-6.9' of git://git.kernel.org/pub/scm/virt/kvm/kvm

Pull kvm fix from Paolo Bonzini:

 - Fix NULL pointer read on s390 in ioctl(KVM_CHECK_EXTENSION) for
   /dev/kvm

* tag 'for-linus-6.9' of git://git.kernel.org/pub/scm/virt/kvm/kvm:
  KVM: s390: Check kvm pointer when testing KVM_CAP_S390_HPAGE_1M
This commit is contained in:
Linus Torvalds 2024-05-12 12:15:39 -07:00
commit 2842076beb
1 changed files with 1 additions and 1 deletions
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2
arch/s390/kvm/kvm-s390.c
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@ -587,7 +587,7 @@ int kvm_vm_ioctl_check_extension(struct kvm *kvm, long ext)
break; break;
case KVM_CAP_S390_HPAGE_1M: case KVM_CAP_S390_HPAGE_1M:
r = 0; r = 0;
if (hpage && !kvm_is_ucontrol(kvm)) if (hpage && !(kvm && kvm_is_ucontrol(kvm)))
r = 1; r = 1;
break; break;
case KVM_CAP_S390_MEM_OP: case KVM_CAP_S390_MEM_OP: