syzbot


WARNING: refcount bug in ip6erspan_tunnel_uninit
Status: internal: reported C repro on 2021/03/28 01:24
Reported-by: syzbot+@syzkaller.appspotmail.com
Fix commit: ip6_gre: proper dev_{hold|put} in ndo_[un]init methods
Patched on: [ci-upstream-bpf-next-kasan-gce ci-upstream-linux-next-kasan-gce-root ci-upstream-net-kasan-gce], missing on: [ci-qemu-upstream ci-qemu-upstream-386 ci-qemu2-arm32 ci-qemu2-arm64 ci-qemu2-arm64-compat ci-qemu2-arm64-mte ci-qemu2-riscv64 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-kmsan-gce ci-upstream-kmsan-gce-386 ci-upstream-net-this-kasan-gce ci2-upstream-kcsan-gce ci2-upstream-usb]
First crash: 26d, last: 23d

Cause bisection: failed (bisect log)

Sample crash report:

Crashes (11):
Manager Time Kernel Commit Syzkaller Config Log Report Syz repro C repro VM info Title
ci-upstream-net-kasan-gce 2021/03/28 02:33 net-next a1281601 a8529b82 .config log report syz C WARNING: refcount bug in ip6erspan_tunnel_uninit
ci-upstream-net-kasan-gce 2021/03/30 07:54 net-next 37f368d8 6a81331a .config log report info WARNING: refcount bug in ip6erspan_tunnel_uninit
ci-upstream-net-kasan-gce 2021/03/30 07:54 net-next 37f368d8 6a81331a .config log report info WARNING: refcount bug in ip6erspan_tunnel_uninit
ci-upstream-net-kasan-gce 2021/03/30 07:53 net-next 37f368d8 6a81331a .config log report info WARNING: refcount bug in ip6erspan_tunnel_uninit
ci-upstream-net-kasan-gce 2021/03/30 07:53 net-next 37f368d8 6a81331a .config log report info WARNING: refcount bug in ip6erspan_tunnel_uninit
ci-upstream-net-kasan-gce 2021/03/29 21:54 net-next 37f368d8 6a81331a .config log report info WARNING: refcount bug in ip6erspan_tunnel_uninit
ci-upstream-net-kasan-gce 2021/03/28 01:23 net-next a1281601 a8529b82 .config log report info WARNING: refcount bug in ip6erspan_tunnel_uninit
ci-upstream-linux-next-kasan-gce-root 2021/03/30 08:04 linux-next 93129492 6a81331a .config log report info WARNING: refcount bug in ip6erspan_tunnel_uninit
ci-upstream-linux-next-kasan-gce-root 2021/03/30 08:03 linux-next 93129492 6a81331a .config log report info WARNING: refcount bug in ip6erspan_tunnel_uninit
ci-upstream-linux-next-kasan-gce-root 2021/03/30 07:45 linux-next 93129492 6a81331a .config log report info WARNING: refcount bug in ip6erspan_tunnel_uninit
ci-upstream-linux-next-kasan-gce-root 2021/03/30 07:28 linux-next 93129492 6a81331a .config log report info WARNING: refcount bug in ip6erspan_tunnel_uninit