Warning: Permanently added '10.128.0.155' (ECDSA) to the list of known hosts. executing program syzkaller login: [ 52.780528][ T6794] IPVS: ftp: loaded support on port[0] = 21 [ 52.823918][ T6794] netlink: 24 bytes leftover after parsing attributes in process `syz-executor134'. [ 52.868947][ T6794] device veth1 entered promiscuous mode [ 52.908480][ C1] ------------[ cut here ]------------ [ 52.908485][ C1] WARNING: CPU: 1 PID: 6794 at net/core/dev.c:9000 rollback_registered_many+0xbdb/0xf60 [ 52.908488][ C1] Kernel panic - not syncing: panic_on_warn set ... [ 52.908491][ C1] CPU: 1 PID: 6794 Comm: syz-executor134 Not tainted 5.8.0-rc2-next-20200626-syzkaller #0 [ 52.908494][ C1] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 52.908513][ C1] Call Trace: [ 52.908515][ C1] dump_stack+0x18f/0x20d [ 52.908517][ C1] panic+0x2e3/0x75c [ 52.908518][ C1] ? __warn_printk+0xf3/0xf3 [ 52.908520][ C1] ? printk+0xba/0xed [ 52.908522][ C1] ? log_store.cold+0x16/0x16 [ 52.908523][ C1] ? __warn.cold+0x5/0x45 [ 52.908525][ C1] ? __warn+0xd6/0x1f2 [ 52.908527][ C1] ? rollback_registered_many+0xbdb/0xf60 [ 52.908529][ C1] __warn.cold+0x20/0x45 [ 52.908531][ C1] ? rollback_registered_many+0xbdb/0xf60 [ 52.908533][ C1] report_bug+0x1bd/0x210 [ 52.908534][ C1] exc_invalid_op+0xb1/0x120 [ 52.908536][ C1] asm_exc_invalid_op+0x12/0x20 [ 52.908538][ C1] RIP: 0010:rollback_registered_many+0xbdb/0xf60 [ 52.908545][ C1] 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 71 71 3c fb 0f 0b e9 da fd ff ff e8 65 71 3c fb <0f> 0b e9 18 fe ff ff e8 59 71 3c fb 0f b6 2d db 5f 72 04 31 ff 89 [ 52.908548][ C1] RSP: 0018:ffffc90001626f60 EFLAGS: 00010293 [ 52.908552][ C1] RAX: 0000000000000000 RBX: dffffc0000000000 RCX: ffffffff86377685 [ 52.908555][ C1] RDX: ffff88809547a580 RSI: ffffffff8637789b RDI: 0000000000000005 [ 52.908558][ C1] RBP: ffff8880965f20b8 R08: 0000000000000000 R09: ffffffff8a7b7907 [ 52.908561][ C1] R10: 0000000000000000 R11: 0000000000000000 R12: ffff88809e313100 [ 52.908564][ C1] R13: 00000000000349a0 R14: ffff8880965f2000 R15: 0000000000000000 [ 52.908566][ C1] ? rollback_registered_many+0x9c5/0xf60 [ 52.908568][ C1] ? rollback_registered_many+0xbdb/0xf60 [ 52.908570][ C1] ? dev_xdp_uninstall+0x3f0/0x3f0 [ 52.908572][ C1] ? dev_set_mtu_ext+0x590/0x590 [ 52.908574][ C1] unregister_netdevice_queue+0x2dd/0x570 [ 52.908576][ C1] ? unregister_netdevice_many+0x50/0x50 [ 52.908578][ C1] ? hsr_add_port+0x4f3/0x790 [ 52.908580][ C1] hsr_dev_finalize+0x5ce/0x746 [ 52.908581][ C1] hsr_newlink+0x27c/0x520 [ 52.908583][ C1] ? hsr_dellink+0x70/0x70 [ 52.908585][ C1] ? rtnl_create_link+0x184/0xad0 [ 52.908587][ C1] ? hsr_dellink+0x70/0x70 [ 52.908589][ C1] __rtnl_newlink+0x1090/0x1730 [ 52.908590][ C1] ? rtnl_setlink+0x3c0/0x3c0 [ 52.908592][ C1] ? unwind_next_frame+0xe3b/0x1f90 [ 52.908594][ C1] ? is_bpf_text_address+0xcb/0x160 [ 52.908596][ C1] ? kernel_text_address+0xbd/0xf0 [ 52.908598][ C1] ? __kernel_text_address+0x9/0x30 [ 52.908600][ C1] ? unwind_get_return_address+0x51/0x90 [ 52.908602][ C1] ? profile_setup.cold+0xc1/0xc1 [ 52.908604][ C1] ? arch_stack_walk+0x97/0xf0 [ 52.908606][ C1] ? stack_trace_save+0x8c/0xc0 [ 52.908608][ C1] ? stack_trace_consume_entry+0x160/0x160 [ 52.908610][ C1] ? mark_lock+0xbc/0x1710 [ 52.908612][ C1] ? lock_is_held_type+0xb0/0xe0 [ 52.908614][ C1] ? kmem_cache_alloc_trace+0x181/0x480 [ 52.908615][ C1] rtnl_newlink+0x64/0xa0 [ 52.908617][ C1] ? __rtnl_newlink+0x1730/0x1730 [ 52.908619][ C1] rtnetlink_rcv_msg+0x44e/0xad0 [ 52.908621][ C1] ? rtnetlink_put_metrics+0x510/0x510 [ 52.908623][ C1] ? lock_acquire+0x1f1/0xad0 [ 52.908625][ C1] ? netlink_deliver_tap+0x146/0xb70 [ 52.908627][ C1] netlink_rcv_skb+0x15a/0x430 [ 52.908629][ C1] ? rtnetlink_put_metrics+0x510/0x510 [ 52.908630][ C1] ? netlink_ack+0xa10/0xa10 [ 52.908632][ C1] ? lock_is_held_type+0xb0/0xe0 [ 52.908634][ C1] netlink_unicast+0x533/0x7d0 [ 52.908636][ C1] ? netlink_attachskb+0x810/0x810 [ 52.908638][ C1] ? _copy_from_iter_full+0x247/0x890 [ 52.908640][ C1] ? __phys_addr+0x9a/0x110 [ 52.908642][ C1] ? __phys_addr_symbol+0x2c/0x70 [ 52.908644][ C1] ? __check_object_size+0x171/0x3e4 [ 52.908645][ C1] netlink_sendmsg+0x856/0xd90 [ 52.908647][ C1] ? netlink_unicast+0x7d0/0x7d0 [ 52.908649][ C1] ? netlink_unicast+0x7d0/0x7d0 [ 52.908651][ C1] sock_sendmsg+0xcf/0x120 [ 52.908653][ C1] ____sys_sendmsg+0x6e8/0x810 [ 52.908654][ C1] ? kernel_sendmsg+0x50/0x50 [ 52.908656][ C1] ? do_recvmmsg+0x6d0/0x6d0 [ 52.908671][ C1] ? __wake_up_common_lock+0xb4/0x130 [ 52.908672][ C1] ? find_held_lock+0x2d/0x110 [ 52.908674][ C1] ? lockdep_hardirqs_on_prepare+0x590/0x590 [ 52.908676][ C1] ? __wake_up_common_lock+0xde/0x130 [ 52.908678][ C1] ___sys_sendmsg+0xf3/0x170 [ 52.908680][ C1] ? sendmsg_copy_msghdr+0x160/0x160 [ 52.908681][ C1] ? lock_downgrade+0x820/0x820 [ 52.908683][ C1] ? lock_downgrade+0x820/0x820 [ 52.908685][ C1] ? __might_fault+0x190/0x1d0 [ 52.908686][ C1] ? _copy_to_user+0x126/0x160 [ 52.908688][ C1] ? move_addr_to_user+0xb5/0x200 [ 52.908690][ C1] ? __fget_light+0x215/0x280 [ 52.908692][ C1] __sys_sendmsg+0xe5/0x1b0 [ 52.908693][ C1] ? __sys_sendmsg_sock+0xb0/0xb0 [ 52.908695][ C1] ? do_syscall_64+0x1c/0xe0 [ 52.908697][ C1] ? lockdep_hardirqs_on_prepare+0x3a2/0x590 [ 52.908699][ C1] do_syscall_64+0x60/0xe0 [ 52.908701][ C1] entry_SYSCALL_64_after_hwframe+0x44/0xa9 [ 52.908702][ C1] RIP: 0033:0x4416c9 [ 52.908704][ C1] Code: Bad RIP value. [ 52.908706][ C1] RSP: 002b:00007ffe0dd5c7d8 EFLAGS: 00000246 ORIG_RAX: 000000000000002e [ 52.908710][ C1] RAX: ffffffffffffffda RBX: 0000000000000003 RCX: 00000000004416c9 [ 52.908713][ C1] RDX: 0000000000000000 RSI: 0000000020000240 RDI: 0000000000000003 [ 52.908716][ C1] RBP: 00007ffe0dd5c7f0 R08: 00000000bb1414ac R09: 00000000bb1414ac [ 52.908719][ C1] R10: 00000000bb1414ac R11: 0000000000000246 R12: 0000000000000000 [ 52.908721][ C1] R13: 0000000000000000 R14: 0000000000000000 R15: 0000000000000000 [ 52.910155][ C1] Kernel Offset: disabled