syzbot


general protection fault in gfn_to_rmap (2)
Status: upstream: reported C repro on 2021/06/08 16:24
Reported-by: syzbot+fb0b6a7e8713aeb0319c@syzkaller.appspotmail.com
Fix commit: 78fcb2c91adf KVM: x86: Immediately reset the MMU context when the SMM flag is cleared
Patched on: [ci-qemu-upstream ci-qemu-upstream-386 ci-qemu2-arm64 ci-qemu2-arm64-compat ci-qemu2-arm64-mte ci-qemu2-riscv64 ci-upstream-bpf-kasan-gce ci-upstream-bpf-next-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-kmsan-gce ci-upstream-kmsan-gce-386 ci-upstream-linux-next-kasan-gce-root ci-upstream-net-kasan-gce ci-upstream-net-this-kasan-gce ci2-upstream-kcsan-gce ci2-upstream-usb], missing on: [ci-qemu2-arm32]
First crash: 54d, last: 54d

Cause bisection: introduced by (bisect log) :
commit 9ec19493fb86d6d5fbf9286b94ff21e56ef66376
Author: Sean Christopherson <sean.j.christopherson@intel.com>
Date: Tue Apr 2 15:03:11 2019 +0000

  KVM: x86: clear SMM flags before loading state while leaving SMM

Crash: general protection fault in gfn_to_rmap (log)
Repro: C syz .config
similar bugs (1):
Kernel Title Repro Cause bisect Fix bisect Count Last Reported Patched Status
upstream general protection fault in gfn_to_rmap syz 7 1259d 1369d 6/22 fixed on 2018/05/17 19:21

Sample crash report:

Crashes (1):
Manager Time Kernel Commit Syzkaller Config Log Report Syz repro C repro VM info Title
ci-upstream-kasan-gce-smack-root 2021/06/07 22:48 upstream 614124bea77e e59537be .config log report syz C general protection fault in gfn_to_rmap