syzbot


WARNING in kvm_mmu_notifier_invalidate_range_start
Status: upstream: reported C repro on 2021/12/28 17:02
Reported-by: syzbot+4e697fe80a31aa7efe21@syzkaller.appspotmail.com
Fix commit: d6aba4c8e20d hugetlbfs: fix off-by-one error in hugetlb_vmdelete_list()
Patched on: [ci-qemu-upstream ci-qemu-upstream-386 ci-qemu2-arm32 ci-qemu2-arm64 ci-qemu2-arm64-compat ci-qemu2-arm64-mte 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-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-riscv64 ci-upstream-kmsan-gce ci-upstream-kmsan-gce-386]
First crash: 34d, last: 8d19h

Cause bisection: introduced by (bisect log) :
commit e4b8954074f6d0db01c8c97d338a67f9389c042f
Author: Eric Dumazet <edumazet@google.com>
Date: Tue Dec 7 01:30:37 2021 +0000

  netlink: add net device refcount tracker to struct ethnl_req_info

Crash: WARNING in ref_tracker_dir_exit (log)
Repro: C syz .config

Sample crash report:

Crashes (5):
Manager Time Kernel Commit Syzkaller Config Log Report Syz repro C repro VM info Title
ci-upstream-linux-next-kasan-gce-root 2021/12/24 17:14 linux-next ea586a076e8a 6caa12e4 .config log report syz C WARNING in kvm_mmu_notifier_invalidate_range_start
ci-upstream-kasan-gce 2022/01/19 02:12 upstream 99613159ad74 731a2d23 .config log report info WARNING in kvm_mmu_notifier_invalidate_range_start
ci-upstream-kasan-gce 2022/01/19 01:44 upstream 99613159ad74 731a2d23 .config log report info WARNING in kvm_mmu_notifier_invalidate_range_start
ci-upstream-linux-next-kasan-gce-root 2022/01/09 01:22 linux-next b8170452cd51 2ca0d385 .config log report info WARNING in kvm_mmu_notifier_invalidate_range_start
ci-upstream-linux-next-kasan-gce-root 2021/12/24 16:51 linux-next ea586a076e8a 6caa12e4 .config log report info WARNING in kvm_mmu_notifier_invalidate_range_start