[ 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 '10.128.10.18' (ECDSA) to the list of known hosts. executing program syzkaller login: [ 54.205159][ T6792] IPVS: ftp: loaded support on port[0] = 21 [ 54.240067][ T6792] netlink: 24 bytes leftover after parsing attributes in process `syz-executor330'. [ 54.303579][ T6792] device veth1 entered promiscuous mode [ 54.343518][ T6792] ------------[ cut here ]------------ [ 54.349061][ T6792] WARNING: CPU: 1 PID: 6792 at net/core/dev.c:8992 rollback_registered_many+0xbdb/0xf60 [ 54.359695][ T6792] Kernel panic - not syncing: panic_on_warn set ... [ 54.366316][ T6792] CPU: 1 PID: 6792 Comm: syz-executor330 Not tainted 5.8.0-rc3-syzkaller #0 [ 54.374982][ T6792] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 54.385024][ T6792] Call Trace: [ 54.388302][ T6792] dump_stack+0x18f/0x20d [ 54.392618][ T6792] panic+0x2e3/0x75c [ 54.396493][ T6792] ? __warn_printk+0xf3/0xf3 [ 54.401064][ T6792] ? printk+0xba/0xed [ 54.405022][ T6792] ? log_store.cold+0x16/0x16 [ 54.409676][ T6792] ? do_syscall_64+0x60/0xe0 [ 54.414244][ T6792] ? __warn.cold+0x5/0x45 [ 54.418546][ T6792] ? __warn+0xd6/0x1f2 [ 54.422652][ T6792] ? rollback_registered_many+0xbdb/0xf60 [ 54.428473][ T6792] __warn.cold+0x20/0x45 [ 54.432696][ T6792] ? rollback_registered_many+0xbdb/0xf60 [ 54.438433][ T6792] report_bug+0x1bd/0x210 [ 54.442830][ T6792] handle_bug+0x38/0x90 [ 54.446961][ T6792] exc_invalid_op+0x13/0x40 [ 54.451443][ T6792] asm_exc_invalid_op+0x12/0x20 [ 54.456269][ T6792] RIP: 0010:rollback_registered_many+0xbdb/0xf60 [ 54.462588][ T6792] Code: 00 00 31 f6 4c 89 f7 e8 f3 d9 fc ff e9 4f fe ff ff 4c 89 e7 e9 48 fd ff ff e8 51 5d 3e fb 0f 0b e9 da fd ff ff e8 45 5d 3e fb <0f> 0b e9 18 fe ff ff e8 39 5d 3e fb 0f b6 2d 2e 24 74 04 31 ff 89 [ 54.482179][ T6792] RSP: 0018:ffffc900015b6f60 EFLAGS: 00010293 [ 54.488234][ T6792] RAX: 0000000000000000 RBX: dffffc0000000000 RCX: ffffffff863557c5 [ 54.496181][ T6792] RDX: ffff888095902240 RSI: ffffffff863559db RDI: 0000000000000005 [ 54.504128][ T6792] RBP: ffff888095dbe0b8 R08: 0000000000000000 R09: ffffffff8a7b2fc7 [ 54.512074][ T6792] R10: 0000000000000000 R11: 0000000000000000 R12: ffff8880a6f76900 [ 54.520019][ T6792] R13: 0000000000034960 R14: ffff888095dbe000 R15: 0000000000000000 [ 54.527974][ T6792] ? rollback_registered_many+0x9c5/0xf60 [ 54.533683][ T6792] ? rollback_registered_many+0xbdb/0xf60 [ 54.539384][ T6792] ? dev_xdp_uninstall+0x3f0/0x3f0 [ 54.544472][ T6792] ? dev_set_mtu_ext+0x590/0x590 [ 54.549387][ T6792] unregister_netdevice_queue+0x2dd/0x570 [ 54.555089][ T6792] ? unregister_netdevice_many+0x50/0x50 [ 54.560716][ T6792] ? hsr_add_port+0x4f3/0x790 [ 54.565377][ T6792] hsr_dev_finalize+0x5ce/0x746 [ 54.570202][ T6792] hsr_newlink+0x27c/0x520 [ 54.574592][ T6792] ? hsr_dellink+0x70/0x70 [ 54.578984][ T6792] ? rtnl_create_link+0x184/0xad0 [ 54.583982][ T6792] ? hsr_dellink+0x70/0x70 [ 54.588374][ T6792] __rtnl_newlink+0x1090/0x1730 [ 54.593206][ T6792] ? rtnl_setlink+0x3c0/0x3c0 [ 54.597857][ T6792] ? lock_downgrade+0x820/0x820 [ 54.602711][ T6792] ? is_bpf_text_address+0xcb/0x160 [ 54.607912][ T6792] ? kernel_text_address+0xbd/0xf0 [ 54.613014][ T6792] ? __kernel_text_address+0x9/0x30 [ 54.618187][ T6792] ? unwind_get_return_address+0x51/0x90 [ 54.623795][ T6792] ? profile_setup.cold+0xc1/0xc1 [ 54.628792][ T6792] ? arch_stack_walk+0x97/0xf0 [ 54.633535][ T6792] ? stack_trace_save+0x8c/0xc0 [ 54.638361][ T6792] ? stack_trace_consume_entry+0x160/0x160 [ 54.644175][ T6792] ? mark_lock+0xbc/0x1710 [ 54.648568][ T6792] ? lock_is_held_type+0xb0/0xe0 [ 54.653498][ T6792] ? trace_kmalloc+0xfd/0x130 [ 54.658167][ T6792] ? kmem_cache_alloc_trace+0x168/0x2d0 [ 54.663691][ T6792] rtnl_newlink+0x64/0xa0 [ 54.667993][ T6792] ? __rtnl_newlink+0x1730/0x1730 [ 54.672992][ T6792] rtnetlink_rcv_msg+0x44e/0xad0 [ 54.677904][ T6792] ? rtnetlink_put_metrics+0x510/0x510 [ 54.683340][ T6792] ? lock_acquire+0x1f1/0xad0 [ 54.687991][ T6792] ? netlink_deliver_tap+0x146/0xb70 [ 54.693252][ T6792] netlink_rcv_skb+0x15a/0x430 [ 54.698008][ T6792] ? rtnetlink_put_metrics+0x510/0x510 [ 54.703455][ T6792] ? netlink_ack+0xa10/0xa10 [ 54.708023][ T6792] netlink_unicast+0x533/0x7d0 [ 54.712765][ T6792] ? netlink_attachskb+0x810/0x810 [ 54.717849][ T6792] ? _copy_from_iter_full+0x247/0x890 [ 54.723195][ T6792] ? __phys_addr+0x9a/0x110 [ 54.727674][ T6792] ? __phys_addr_symbol+0x2c/0x70 [ 54.732672][ T6792] ? __check_object_size+0x171/0x3e4 [ 54.737932][ T6792] netlink_sendmsg+0x856/0xd90 [ 54.742760][ T6792] ? netlink_unicast+0x7d0/0x7d0 [ 54.747675][ T6792] ? netlink_unicast+0x7d0/0x7d0 [ 54.752587][ T6792] sock_sendmsg+0xcf/0x120 [ 54.756995][ T6792] ____sys_sendmsg+0x6e8/0x810 [ 54.761822][ T6792] ? kernel_sendmsg+0x50/0x50 [ 54.766470][ T6792] ? do_recvmmsg+0x6d0/0x6d0 [ 54.771034][ T6792] ? __wake_up_common_lock+0xb4/0x130 [ 54.776379][ T6792] ? find_held_lock+0x2d/0x110 [ 54.781116][ T6792] ? lockdep_hardirqs_on_prepare+0x590/0x590 [ 54.787067][ T6792] ? __wake_up_common_lock+0xde/0x130 [ 54.792414][ T6792] ___sys_sendmsg+0xf3/0x170 [ 54.796979][ T6792] ? sendmsg_copy_msghdr+0x160/0x160 [ 54.802253][ T6792] ? lock_downgrade+0x820/0x820 [ 54.807093][ T6792] ? lock_downgrade+0x820/0x820 [ 54.811940][ T6792] ? __might_fault+0x190/0x1d0 [ 54.816679][ T6792] ? _copy_to_user+0x126/0x160 [ 54.821421][ T6792] ? move_addr_to_user+0xb5/0x200 [ 54.826438][ T6792] ? __fget_light+0x215/0x280 [ 54.831093][ T6792] __sys_sendmsg+0xe5/0x1b0 [ 54.835569][ T6792] ? __sys_sendmsg_sock+0xb0/0xb0 [ 54.840599][ T6792] ? do_syscall_64+0x1c/0xe0 [ 54.845163][ T6792] ? lockdep_hardirqs_on_prepare+0x3a2/0x590 [ 54.851118][ T6792] do_syscall_64+0x60/0xe0 [ 54.855510][ T6792] entry_SYSCALL_64_after_hwframe+0x44/0xa9 [ 54.861376][ T6792] RIP: 0033:0x440e29 [ 54.865241][ T6792] Code: Bad RIP value. [ 54.869280][ T6792] RSP: 002b:00007ffdf1105258 EFLAGS: 00000246 ORIG_RAX: 000000000000002e [ 54.877666][ T6792] RAX: ffffffffffffffda RBX: 00000000004a25f0 RCX: 0000000000440e29 [ 54.885612][ T6792] RDX: 0000000000000000 RSI: 0000000020000240 RDI: 0000000000000003 [ 54.893560][ T6792] RBP: 00007ffdf1105260 R08: 0000000120080522 R09: 0000000120080522 [ 54.901506][ T6792] R10: 0000000120080522 R11: 0000000000000246 R12: 00000000004a25f0 [ 54.909453][ T6792] R13: 00000000004023c0 R14: 0000000000000000 R15: 0000000000000000 [ 54.918916][ T6792] Kernel Offset: disabled [ 54.923312][ T6792] Rebooting in 86400 seconds..