syzbot


KASAN: use-after-free Write in paging32_walk_addr_generic
Status: upstream: reported C repro on 2020/08/17 18:02
Reported-by: syzbot+47665dbce263479409c8@syzkaller.appspotmail.com
First crash: 43d, last: 9d15h

Cause bisection: introduced by (bisect log):

commit 7ba31c3f2f1ee095d8126f4d3757fc3b2bc3c838
Author: Linus Torvalds <torvalds@linux-foundation.org>
Date: Wed Jan 29 18:15:11 2020 +0000

  Merge tag 'staging-5.6-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/staging

Crash: INFO: rcu detected stall in kvm_vcpu_ioctl (log)
Repro: C syz .config

Sample crash report:

Fix bisection attempts:
Manager Time Kernel Commit Syzkaller Config Log Report Syz repro C repro VM info
ci-upstream-kasan-gce-root 2020/09/19 13:44 upstream eb5f95f1 424dd8e7 .config log syz C
Crashes (6):
Manager Time Kernel Commit Syzkaller Config Log Report Syz repro C repro VM info Maintainers
ci-upstream-kasan-gce-root 2020/08/18 10:22 upstream 06a4ec1d 424dd8e7 .config log report syz C bp@alien8.de, hpa@zytor.com, jmattson@google.com, joro@8bytes.org, kvm@vger.kernel.org, linux-kernel@vger.kernel.org, mingo@redhat.com, pbonzini@redhat.com, sean.j.christopherson@intel.com, tglx@linutronix.de, vkuznets@redhat.com, wanpengli@tencent.com, x86@kernel.org
ci-upstream-kasan-gce-selinux-root 2020/08/17 12:17 upstream 9123e3a7 424dd8e7 .config log report syz C bp@alien8.de, hpa@zytor.com, jmattson@google.com, joro@8bytes.org, kvm@vger.kernel.org, linux-kernel@vger.kernel.org, mingo@redhat.com, pbonzini@redhat.com, sean.j.christopherson@intel.com, tglx@linutronix.de, vkuznets@redhat.com, wanpengli@tencent.com, x86@kernel.org
ci-upstream-kasan-gce-smack-root 2020/08/16 22:48 upstream 2cc3c4b3 424dd8e7 .config log report syz C bp@alien8.de, hpa@zytor.com, jmattson@google.com, joro@8bytes.org, kvm@vger.kernel.org, linux-kernel@vger.kernel.org, mingo@redhat.com, pbonzini@redhat.com, sean.j.christopherson@intel.com, tglx@linutronix.de, vkuznets@redhat.com, wanpengli@tencent.com, x86@kernel.org
ci-upstream-kasan-gce-root 2020/08/16 20:54 upstream 2cc3c4b3 424dd8e7 .config log report syz C bp@alien8.de, hpa@zytor.com, jmattson@google.com, joro@8bytes.org, kvm@vger.kernel.org, linux-kernel@vger.kernel.org, mingo@redhat.com, pbonzini@redhat.com, sean.j.christopherson@intel.com, tglx@linutronix.de, vkuznets@redhat.com, wanpengli@tencent.com, x86@kernel.org
ci-upstream-linux-next-kasan-gce-root 2020/08/20 13:04 linux-next 605cbf3d ed282a3a .config log report syz C bp@alien8.de, hpa@zytor.com, jmattson@google.com, joro@8bytes.org, kvm@vger.kernel.org, linux-kernel@vger.kernel.org, mingo@redhat.com, pbonzini@redhat.com, sean.j.christopherson@intel.com, tglx@linutronix.de, vkuznets@redhat.com, wanpengli@tencent.com, x86@kernel.org
ci-upstream-kasan-gce-root 2020/08/16 20:30 upstream 2cc3c4b3 424dd8e7 .config log report bp@alien8.de, hpa@zytor.com, jmattson@google.com, joro@8bytes.org, kvm@vger.kernel.org, linux-kernel@vger.kernel.org, mingo@redhat.com, pbonzini@redhat.com, sean.j.christopherson@intel.com, tglx@linutronix.de, vkuznets@redhat.com, wanpengli@tencent.com, x86@kernel.org