syzbot


[upstream] WARNING: refcount bug in kvm_vm_ioctl
Status: upstream: reported syz repro on 2018/10/10 07:58
Reported-by: syzbot+6df4d24a0a50fd5d1a08@syzkaller.appspotmail.com
Fix commit: cfa39381 kvm: fix kvm_ioctl_create_device() reference counting (CVE-2019-6974)
Patched on: [ci-upstream-bpf-kasan-gce ci-upstream-gce-leak ci-upstream-kasan-gce ci-upstream-kasan-gce-386 ci-upstream-kasan-gce-root ci-upstream-kasan-gce-selinux-root ci-upstream-kasan-gce-smack-root ci-upstream-linux-next-kasan-gce-root ci-upstream-net-kasan-gce ci-upstream-net-this-kasan-gce], missing on: [ci-upstream-bpf-next-kasan-gce ci-upstream-kmsan-gce]
First crash: 140d, last: 17d
duplicates:
Title Repro Count Last Reported Patched Status
BUG: unable to handle kernel paging request in refcount_inc_not_zero_checked 2 74d 130d 0/12 closed as dup on 2018/10/11 14:33
kernel BUG at arch/x86/kvm/x86.c:LINE! (2) C 174 1d08h 130d 0/12 closed as dup on 2018/10/11 14:32

Sample crash report:

All crashes (13):
Manager Time Kernel Commit Syzkaller Config Log Report Syz repro C repro Maintainers
ci-upstream-kasan-gce-root 2018/10/10 03:04 upstream 64c5e530 8b311eaf .config log report syz kvm@vger.kernel.org, linux-kernel@vger.kernel.org, pbonzini@redhat.com, rkrcmar@redhat.com
ci-upstream-kasan-gce-selinux-root 2019/01/18 01:17 upstream 7fbfee7c 769e75ed .config log report syz kvm@vger.kernel.org, linux-kernel@vger.kernel.org, pbonzini@redhat.com, rkrcmar@redhat.com
ci-upstream-kasan-gce-smack-root 2019/01/17 21:44 upstream 7fbfee7c 769e75ed .config log report syz kvm@vger.kernel.org, linux-kernel@vger.kernel.org, pbonzini@redhat.com, rkrcmar@redhat.com
ci-upstream-kasan-gce-selinux-root 2018/10/10 01:30 upstream 64c5e530 8b311eaf .config log report syz kvm@vger.kernel.org, linux-kernel@vger.kernel.org, pbonzini@redhat.com, rkrcmar@redhat.com
ci-upstream-kasan-gce-386 2018/12/05 10:23 upstream 0072a0c1 f162ad97 .config log report syz kvm@vger.kernel.org, linux-kernel@vger.kernel.org, pbonzini@redhat.com, rkrcmar@redhat.com
ci-upstream-kasan-gce-386 2018/11/11 21:44 upstream e255aee5 7b5f8621 .config log report syz kvm@vger.kernel.org, linux-kernel@vger.kernel.org, pbonzini@redhat.com, rkrcmar@redhat.com
ci-upstream-linux-next-kasan-gce-root 2018/10/10 01:02 linux-next 570b7bde 8b311eaf .config log report syz kvm@vger.kernel.org, linux-kernel@vger.kernel.org, pbonzini@redhat.com, rkrcmar@redhat.com
ci-upstream-linux-next-kasan-gce-root 2019/01/17 22:59 linux-next a37d50ca 769e75ed .config log report syz kvm@vger.kernel.org, linux-kernel@vger.kernel.org, pbonzini@redhat.com, rkrcmar@redhat.com
ci-upstream-kasan-gce-smack-root 2019/01/17 20:09 upstream 7fbfee7c 769e75ed .config log report kvm@vger.kernel.org, linux-kernel@vger.kernel.org, pbonzini@redhat.com, rkrcmar@redhat.com
ci-upstream-kasan-gce-selinux-root 2018/12/21 17:25 upstream 9097a058 588075e6 .config log report kvm@vger.kernel.org, linux-kernel@vger.kernel.org, pbonzini@redhat.com, rkrcmar@redhat.com
ci-upstream-kasan-gce-smack-root 2018/11/23 15:43 upstream edeca3a7 2b0dc848 .config log report kvm@vger.kernel.org, linux-kernel@vger.kernel.org, pbonzini@redhat.com, rkrcmar@redhat.com
ci-upstream-kasan-gce-386 2018/09/30 08:58 upstream 291d0e5d 41e4b329 .config log report kvm@vger.kernel.org, linux-kernel@vger.kernel.org, pbonzini@redhat.com, rkrcmar@redhat.com
ci-upstream-kasan-gce-386 2019/01/31 05:38 upstream 1c0490ce aa432daf .config log report kvm@vger.kernel.org, linux-kernel@vger.kernel.org, pbonzini@redhat.com, rkrcmar@redhat.com