syzbot


WARNING: refcount bug in register_netdevice
Status: internal: reported C repro on 2021/03/27 08:50
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: 20d

Cause bisection: introduced by (bisect log) [merge commit]:
commit 7fafb54c7d390e9b273a1d7d377e38d9c408046e
Author: Linus Torvalds <torvalds@linux-foundation.org>
Date: Wed Oct 14 22:22:07 2020 +0000

  Merge tag 'leds-5.10-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/pavel/linux-leds

Crash: kernel panic: panic_on_warn set (log)
Repro: C syz .config

Sample crash report:

Crashes (97):
Manager Time Kernel Commit Syzkaller Config Log Report Syz repro C repro VM info Title
ci-upstream-linux-next-kasan-gce-root 2021/03/27 15:53 linux-next 93129492 a8529b82 .config log report syz C WARNING: refcount bug in register_netdevice
ci-upstream-bpf-next-kasan-gce 2021/04/02 23:54 bpf-next 89d69c5d 6a81331a .config log report info WARNING: refcount bug in register_netdevice
ci-upstream-bpf-next-kasan-gce 2021/04/02 03:36 bpf-next 89d69c5d 6a81331a .config log report info WARNING: refcount bug in register_netdevice
ci-upstream-bpf-next-kasan-gce 2021/04/01 19:51 bpf-next 89d69c5d 6a81331a .config log report info WARNING: refcount bug in register_netdevice
ci-upstream-bpf-next-kasan-gce 2021/04/01 15:40 bpf-next e27bfefb 6a81331a .config log report info WARNING: refcount bug in register_netdevice
ci-upstream-bpf-next-kasan-gce 2021/04/01 04:33 bpf-next 235fc0e3 6a81331a .config log report info WARNING: refcount bug in register_netdevice
ci-upstream-net-kasan-gce 2021/03/31 20:28 net-next 37f368d8 6a81331a .config log report info WARNING: refcount bug in register_netdevice
ci-upstream-net-kasan-gce 2021/03/31 17:00 net-next 37f368d8 6a81331a .config log report info WARNING: refcount bug in register_netdevice
ci-upstream-net-kasan-gce 2021/03/31 15:53 net-next 37f368d8 6a81331a .config log report info WARNING: refcount bug in register_netdevice
ci-upstream-net-kasan-gce 2021/03/31 10:46 net-next 37f368d8 6a81331a .config log report info WARNING: refcount bug in register_netdevice
ci-upstream-net-kasan-gce 2021/03/31 08:58 net-next 37f368d8 6a81331a .config log report info WARNING: refcount bug in register_netdevice
ci-upstream-bpf-next-kasan-gce 2021/03/30 23:16 bpf-next 2976706f 6a81331a .config log report info WARNING: refcount bug in register_netdevice
ci-upstream-net-kasan-gce 2021/03/30 20:12 net-next 37f368d8 6a81331a .config log report info WARNING: refcount bug in register_netdevice
ci-upstream-net-kasan-gce 2021/03/30 17:16 net-next 37f368d8 6a81331a .config log report info WARNING: refcount bug in register_netdevice
ci-upstream-net-kasan-gce 2021/03/30 14:09 net-next 37f368d8 6a81331a .config log report info WARNING: refcount bug in register_netdevice
ci-upstream-net-kasan-gce 2021/03/30 09:47 net-next 37f368d8 6a81331a .config log report info WARNING: refcount bug in register_netdevice
ci-upstream-net-kasan-gce 2021/03/30 05:39 net-next 37f368d8 6a81331a .config log report info WARNING: refcount bug in register_netdevice
ci-upstream-net-kasan-gce 2021/03/30 02:54 net-next 37f368d8 6a81331a .config log report info WARNING: refcount bug in register_netdevice
ci-upstream-bpf-next-kasan-gce 2021/03/30 01:42 bpf-next 36e79851 6a81331a .config log report info WARNING: refcount bug in register_netdevice
ci-upstream-net-kasan-gce 2021/03/29 21:53 net-next 37f368d8 6a81331a .config log report info WARNING: refcount bug in register_netdevice
ci-upstream-bpf-next-kasan-gce 2021/03/29 19:54 bpf-next 36e79851 6a81331a .config log report info WARNING: refcount bug in register_netdevice
ci-upstream-net-kasan-gce 2021/03/29 15:26 net-next 72642f41 a8529b82 .config log report info WARNING: refcount bug in register_netdevice
ci-upstream-net-kasan-gce 2021/03/29 12:22 net-next 72642f41 a8529b82 .config log report info WARNING: refcount bug in register_netdevice
ci-upstream-net-kasan-gce 2021/03/29 10:19 net-next 72642f41 a8529b82 .config log report info WARNING: refcount bug in register_netdevice
ci-upstream-net-kasan-gce 2021/03/29 08:32 net-next 72642f41 a8529b82 .config log report info WARNING: refcount bug in register_netdevice
ci-upstream-net-kasan-gce 2021/03/29 07:27 net-next 72642f41 a8529b82 .config log report info WARNING: refcount bug in register_netdevice
ci-upstream-net-kasan-gce 2021/03/29 06:37 net-next 72642f41 a8529b82 .config log report info WARNING: refcount bug in register_netdevice
ci-upstream-bpf-next-kasan-gce 2021/03/29 06:29 bpf-next 36e79851 a8529b82 .config log report info WARNING: refcount bug in register_netdevice
ci-upstream-net-kasan-gce 2021/03/29 04:46 net-next a1281601 a8529b82 .config log report info WARNING: refcount bug in register_netdevice
ci-upstream-bpf-next-kasan-gce 2021/03/29 04:21 bpf-next 36e79851 a8529b82 .config log report info WARNING: refcount bug in register_netdevice
ci-upstream-net-kasan-gce 2021/03/28 20:07 net-next a1281601 a8529b82 .config log report info WARNING: refcount bug in register_netdevice
ci-upstream-net-kasan-gce 2021/03/28 20:06 net-next a1281601 a8529b82 .config log report info WARNING: refcount bug in register_netdevice
ci-upstream-net-kasan-gce 2021/03/28 17:26 net-next a1281601 a8529b82 .config log report info WARNING: refcount bug in register_netdevice
ci-upstream-net-kasan-gce 2021/03/28 17:05 net-next a1281601 a8529b82 .config log report info WARNING: refcount bug in register_netdevice
ci-upstream-net-kasan-gce 2021/03/28 16:51 net-next a1281601 a8529b82 .config log report info WARNING: refcount bug in register_netdevice
ci-upstream-net-kasan-gce 2021/03/28 16:44 net-next a1281601 a8529b82 .config log report info WARNING: refcount bug in register_netdevice
ci-upstream-net-kasan-gce 2021/03/28 15:48 net-next a1281601 a8529b82 .config log report info WARNING: refcount bug in register_netdevice
ci-upstream-linux-next-kasan-gce-root 2021/04/01 12:01 linux-next 93129492 6a81331a .config log report info WARNING: refcount bug in register_netdevice
ci-upstream-linux-next-kasan-gce-root 2021/03/31 18:53 linux-next 93129492 6a81331a .config log report info WARNING: refcount bug in register_netdevice
ci-upstream-linux-next-kasan-gce-root 2021/03/31 14:35 linux-next 93129492 6a81331a .config log report info WARNING: refcount bug in register_netdevice
ci-upstream-linux-next-kasan-gce-root 2021/03/31 11:08 linux-next 93129492 6a81331a .config log report info WARNING: refcount bug in register_netdevice
ci-upstream-linux-next-kasan-gce-root 2021/03/31 04:05 linux-next 93129492 6a81331a .config log report info WARNING: refcount bug in register_netdevice
ci-upstream-linux-next-kasan-gce-root 2021/03/30 12:28 linux-next 93129492 6a81331a .config log report info WARNING: refcount bug in register_netdevice
ci-upstream-linux-next-kasan-gce-root 2021/03/30 06:18 linux-next 93129492 6a81331a .config log report info WARNING: refcount bug in register_netdevice
ci-upstream-linux-next-kasan-gce-root 2021/03/29 18:33 linux-next 93129492 a8529b82 .config log report info WARNING: refcount bug in register_netdevice
ci-upstream-linux-next-kasan-gce-root 2021/03/29 17:22 linux-next 93129492 a8529b82 .config log report info WARNING: refcount bug in register_netdevice
ci-upstream-linux-next-kasan-gce-root 2021/03/29 11:16 linux-next 93129492 a8529b82 .config log report info WARNING: refcount bug in register_netdevice
ci-upstream-linux-next-kasan-gce-root 2021/03/29 05:53 linux-next 93129492 a8529b82 .config log report info WARNING: refcount bug in register_netdevice
ci-upstream-linux-next-kasan-gce-root 2021/03/28 16:21 linux-next 93129492 a8529b82 .config log report info WARNING: refcount bug in register_netdevice
ci-upstream-linux-next-kasan-gce-root 2021/03/27 08:49 linux-next 93129492 a8529b82 .config log report info WARNING: refcount bug in register_netdevice