[ OK ] Started Getty on tty2. [ OK ] Started OpenBSD Secure Shell server. [ OK ] Started getty on tty2-tty6 if dbus and logind are not available. [ OK ] Started Getty on tty6. [ OK ] Started Getty on tty5. [ OK ] Reached target Login Prompts. [ OK ] Reached target Multi-User System. [ OK ] Reached target Graphical Interface. Starting Update UTMP about System Runlevel Changes... [ OK ] Started Update UTMP about System Runlevel Changes. Debian GNU/Linux 9 syzkaller ttyS0 Warning: Permanently added '10.128.0.204' (ECDSA) to the list of known hosts. executing program syzkaller login: [ 56.937345][ T6816] IPVS: ftp: loaded support on port[0] = 21 [ 56.972637][ T6816] netlink: 24 bytes leftover after parsing attributes in process `syz-executor429'. [ 57.036880][ T6816] device veth1 entered promiscuous mode [ 57.076093][ T6816] ------------[ cut here ]------------ [ 57.081568][ T6816] WARNING: CPU: 1 PID: 6816 at net/core/dev.c:9001 rollback_registered_many+0xbdb/0xf60 [ 57.092044][ T6816] Kernel panic - not syncing: panic_on_warn set ... [ 57.098622][ T6816] CPU: 1 PID: 6816 Comm: syz-executor429 Not tainted 5.8.0-rc3-next-20200701-syzkaller #0 [ 57.108475][ T6816] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 57.118498][ T6816] Call Trace: [ 57.121766][ T6816] dump_stack+0x18f/0x20d [ 57.126073][ T6816] panic+0x2e3/0x75c [ 57.129941][ T6816] ? __warn_printk+0xf3/0xf3 [ 57.134508][ T6816] ? printk+0xba/0xed [ 57.138466][ T6816] ? log_store.cold+0x16/0x16 [ 57.143116][ T6816] ? do_syscall_64+0x60/0xe0 [ 57.147682][ T6816] ? __warn.cold+0x5/0x45 [ 57.151983][ T6816] ? __warn+0xd6/0x1f2 [ 57.156025][ T6816] ? rollback_registered_many+0xbdb/0xf60 [ 57.161714][ T6816] __warn.cold+0x20/0x45 [ 57.165931][ T6816] ? rollback_registered_many+0xbdb/0xf60 [ 57.171625][ T6816] report_bug+0x1bd/0x210 [ 57.175929][ T6816] handle_bug+0x38/0x90 [ 57.180054][ T6816] exc_invalid_op+0x13/0x40 [ 57.184528][ T6816] asm_exc_invalid_op+0x12/0x20 [ 57.189350][ T6816] RIP: 0010:rollback_registered_many+0xbdb/0xf60 [ 57.195647][ T6816] Code: 00 00 31 f6 4c 89 f7 e8 13 d9 fc ff e9 4f fe ff ff 4c 89 e7 e9 48 fd ff ff e8 21 35 3b fb 0f 0b e9 da fd ff ff e8 15 35 3b fb <0f> 0b e9 18 fe ff ff e8 09 35 3b fb 0f b6 2d a2 36 71 04 31 ff 89 [ 57.215221][ T6816] RSP: 0018:ffffc90001886f60 EFLAGS: 00010293 [ 57.221262][ T6816] RAX: 0000000000000000 RBX: dffffc0000000000 RCX: ffffffff8638b445 [ 57.229205][ T6816] RDX: ffff888096660500 RSI: ffffffff8638b65b RDI: 0000000000000005 [ 57.237151][ T6816] RBP: ffff8880970de0b8 R08: 0000000000000000 R09: ffffffff8a7b8c47 [ 57.245095][ T6816] R10: 0000000000000000 R11: 0000000000000000 R12: ffff888096af7180 [ 57.253039][ T6816] R13: 0000000000034960 R14: ffff8880970de000 R15: 0000000000000000 [ 57.260992][ T6816] ? rollback_registered_many+0x9c5/0xf60 [ 57.266684][ T6816] ? rollback_registered_many+0xbdb/0xf60 [ 57.272380][ T6816] ? dev_xdp_uninstall+0x3f0/0x3f0 [ 57.277465][ T6816] ? dev_set_mtu_ext+0x590/0x590 [ 57.282416][ T6816] unregister_netdevice_queue+0x2dd/0x570 [ 57.288111][ T6816] ? unregister_netdevice_many+0x50/0x50 [ 57.293721][ T6816] ? hsr_add_port+0x4f3/0x790 [ 57.298374][ T6816] hsr_dev_finalize+0x5ce/0x746 [ 57.303197][ T6816] hsr_newlink+0x27c/0x520 [ 57.307584][ T6816] ? hsr_dellink+0x70/0x70 [ 57.312061][ T6816] ? rtnl_create_link+0x184/0xad0 [ 57.317056][ T6816] ? hsr_dellink+0x70/0x70 [ 57.321444][ T6816] __rtnl_newlink+0x1090/0x1730 [ 57.326273][ T6816] ? rtnl_setlink+0x3c0/0x3c0 [ 57.330925][ T6816] ? unwind_next_frame+0xe3b/0x1f90 [ 57.336110][ T6816] ? is_bpf_text_address+0xcb/0x160 [ 57.341279][ T6816] ? kernel_text_address+0xbd/0xf0 [ 57.346360][ T6816] ? __kernel_text_address+0x9/0x30 [ 57.351530][ T6816] ? unwind_get_return_address+0x51/0x90 [ 57.357146][ T6816] ? profile_setup.cold+0xc1/0xc1 [ 57.362144][ T6816] ? arch_stack_walk+0x97/0xf0 [ 57.366886][ T6816] ? stack_trace_save+0x8c/0xc0 [ 57.371709][ T6816] ? stack_trace_consume_entry+0x160/0x160 [ 57.377486][ T6816] ? mark_lock+0xbc/0x1710 [ 57.381899][ T6816] ? lock_is_held_type+0xb0/0xe0 [ 57.386815][ T6816] ? kmem_cache_alloc_trace+0x181/0x480 [ 57.392334][ T6816] rtnl_newlink+0x64/0xa0 [ 57.396637][ T6816] ? __rtnl_newlink+0x1730/0x1730 [ 57.401636][ T6816] rtnetlink_rcv_msg+0x44e/0xad0 [ 57.406547][ T6816] ? rtnetlink_put_metrics+0x510/0x510 [ 57.411977][ T6816] ? lock_acquire+0x1f1/0xad0 [ 57.416624][ T6816] ? netlink_deliver_tap+0x146/0xb70 [ 57.421880][ T6816] netlink_rcv_skb+0x15a/0x430 [ 57.426618][ T6816] ? rtnetlink_put_metrics+0x510/0x510 [ 57.432058][ T6816] ? netlink_ack+0xa10/0xa10 [ 57.436626][ T6816] ? lock_is_held_type+0xb0/0xe0 [ 57.441538][ T6816] netlink_unicast+0x533/0x7d0 [ 57.446304][ T6816] ? netlink_attachskb+0x810/0x810 [ 57.451389][ T6816] ? _copy_from_iter_full+0x247/0x890 [ 57.456739][ T6816] ? __phys_addr+0x9a/0x110 [ 57.461217][ T6816] ? __phys_addr_symbol+0x2c/0x70 [ 57.466229][ T6816] ? __check_object_size+0x171/0x3e4 [ 57.471490][ T6816] netlink_sendmsg+0x856/0xd90 [ 57.476231][ T6816] ? netlink_unicast+0x7d0/0x7d0 [ 57.481144][ T6816] ? netlink_unicast+0x7d0/0x7d0 [ 57.486056][ T6816] sock_sendmsg+0xcf/0x120 [ 57.490452][ T6816] ____sys_sendmsg+0x6e8/0x810 [ 57.495190][ T6816] ? kernel_sendmsg+0x50/0x50 [ 57.499839][ T6816] ? do_recvmmsg+0x6d0/0x6d0 [ 57.504421][ T6816] ? __wake_up_common_lock+0xb4/0x130 [ 57.509767][ T6816] ? find_held_lock+0x2d/0x110 [ 57.514604][ T6816] ? lockdep_hardirqs_on_prepare+0x590/0x590 [ 57.520559][ T6816] ? __wake_up_common_lock+0xde/0x130 [ 57.525905][ T6816] ___sys_sendmsg+0xf3/0x170 [ 57.530470][ T6816] ? sendmsg_copy_msghdr+0x160/0x160 [ 57.535728][ T6816] ? lock_downgrade+0x820/0x820 [ 57.540565][ T6816] ? lock_downgrade+0x820/0x820 [ 57.545393][ T6816] ? __might_fault+0x190/0x1d0 [ 57.550129][ T6816] ? _copy_to_user+0x126/0x160 [ 57.554866][ T6816] ? move_addr_to_user+0xb5/0x200 [ 57.559902][ T6816] ? __fget_light+0x215/0x280 [ 57.564554][ T6816] __sys_sendmsg+0xe5/0x1b0 [ 57.569030][ T6816] ? __sys_sendmsg_sock+0xb0/0xb0 [ 57.574033][ T6816] ? do_syscall_64+0x1c/0xe0 [ 57.578597][ T6816] ? lockdep_hardirqs_on_prepare+0x3a2/0x590 [ 57.584554][ T6816] do_syscall_64+0x60/0xe0 [ 57.588945][ T6816] entry_SYSCALL_64_after_hwframe+0x44/0xa9 [ 57.594810][ T6816] RIP: 0033:0x440e29 [ 57.598692][ T6816] Code: Bad RIP value. [ 57.602826][ T6816] RSP: 002b:00007fff3b689518 EFLAGS: 00000246 ORIG_RAX: 000000000000002e [ 57.611210][ T6816] RAX: ffffffffffffffda RBX: 00000000004a25f0 RCX: 0000000000440e29 [ 57.619164][ T6816] RDX: 0000000000000000 RSI: 0000000020000240 RDI: 0000000000000003 [ 57.627108][ T6816] RBP: 00007fff3b689520 R08: 0000000120080522 R09: 0000000120080522 [ 57.635054][ T6816] R10: 0000000120080522 R11: 0000000000000246 R12: 00000000004a25f0 [ 57.642996][ T6816] R13: 00000000004023c0 R14: 0000000000000000 R15: 0000000000000000 [ 57.652173][ T6816] Kernel Offset: disabled [ 57.656573][ T6816] Rebooting in 86400 seconds..