Starting Load/Save RF Kill Switch Status... [ OK ] Started Load/Save RF Kill Switch Status. Debian GNU/Linux 9 syzkaller ttyS0 Warning: Permanently added '10.128.0.157' (ECDSA) to the list of known hosts. executing program syzkaller login: [ 59.534284][ T6826] IPVS: ftp: loaded support on port[0] = 21 [ 59.572546][ T6826] netlink: 24 bytes leftover after parsing attributes in process `syz-executor900'. [ 59.616185][ T6826] device veth1 entered promiscuous mode [ 59.667304][ C1] ------------[ cut here ]------------ [ 59.667309][ C1] WARNING: CPU: 1 PID: 6826 at net/core/dev.c:9000 rollback_registered_many+0xbdb/0xf60 [ 59.667312][ C1] Kernel panic - not syncing: panic_on_warn set ... [ 59.667315][ C1] CPU: 1 PID: 6826 Comm: syz-executor900 Not tainted 5.8.0-rc2-syzkaller #0 [ 59.667319][ C1] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 59.667320][ C1] Call Trace: [ 59.667322][ C1] dump_stack+0x18f/0x20d [ 59.667324][ C1] panic+0x2e3/0x75c [ 59.667325][ C1] ? __warn_printk+0xf3/0xf3 [ 59.667327][ C1] ? printk+0xba/0xed [ 59.667329][ C1] ? log_store.cold+0x16/0x16 [ 59.667331][ C1] ? __warn.cold+0x5/0x45 [ 59.667332][ C1] ? __warn+0xd6/0x1f2 [ 59.667335][ C1] ? rollback_registered_many+0xbdb/0xf60 [ 59.667336][ C1] __warn.cold+0x20/0x45 [ 59.667339][ C1] ? rollback_registered_many+0xbdb/0xf60 [ 59.667340][ C1] report_bug+0x1bd/0x210 [ 59.667342][ C1] exc_invalid_op+0x24d/0x400 [ 59.667345][ C1] ? exc_overflow+0x40/0x40 [ 59.667347][ C1] ? mark_lock+0xbc/0x1710 [ 59.667350][ C1] asm_exc_invalid_op+0x12/0x20 [ 59.667352][ C1] RIP: 0010:rollback_registered_many+0xbdb/0xf60 [ 59.667360][ 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 e1 30 3e fb 0f 0b e9 da fd ff ff e8 d5 30 3e fb <0f> 0b e9 18 fe ff ff e8 c9 30 3e fb 0f b6 2d 13 30 74 04 31 ff 89 [ 59.667362][ C1] RSP: 0018:ffffc90001636f60 EFLAGS: 00010293 [ 59.667367][ C1] RAX: 0000000000000000 RBX: dffffc0000000000 RCX: ffffffff86351d65 [ 59.667370][ C1] RDX: ffff8880961bc180 RSI: ffffffff86351f7b RDI: 0000000000000005 [ 59.667373][ C1] RBP: ffff8880967140b8 R08: 0000000000000000 R09: ffffffff8a7b0087 [ 59.667376][ C1] R10: 0000000000000000 R11: 0000000000000000 R12: ffff888099c37f00 [ 59.667379][ C1] R13: 0000000000034960 R14: ffff888096714000 R15: 0000000000000000 [ 59.667381][ C1] ? rollback_registered_many+0x9c5/0xf60 [ 59.667383][ C1] ? rollback_registered_many+0xbdb/0xf60 [ 59.667385][ C1] ? dev_xdp_uninstall+0x3f0/0x3f0 [ 59.667387][ C1] ? dev_set_mtu_ext+0x590/0x590 [ 59.667390][ C1] unregister_netdevice_queue+0x2dd/0x570 [ 59.667392][ C1] ? unregister_netdevice_many+0x50/0x50 [ 59.667394][ C1] ? hsr_add_port+0x4f3/0x790 [ 59.667396][ C1] hsr_dev_finalize+0x5ce/0x746 [ 59.667397][ C1] hsr_newlink+0x27c/0x520 [ 59.667399][ C1] ? hsr_dellink+0x70/0x70 [ 59.667401][ C1] ? rtnl_create_link+0x184/0xad0 [ 59.667408][ C1] ? hsr_dellink+0x70/0x70 [ 59.667410][ C1] __rtnl_newlink+0x1090/0x1730 [ 59.667412][ C1] ? rtnl_setlink+0x3c0/0x3c0 [ 59.667414][ C1] ? lock_downgrade+0x820/0x820 [ 59.667416][ C1] ? check_preemption_disabled+0x38/0x220 [ 59.667418][ C1] ? is_bpf_text_address+0xcb/0x160 [ 59.667420][ C1] ? kernel_text_address+0xbd/0xf0 [ 59.667422][ C1] ? __kernel_text_address+0x9/0x30 [ 59.667425][ C1] ? unwind_get_return_address+0x51/0x90 [ 59.667428][ C1] ? profile_setup.cold+0xc1/0xc1 [ 59.667430][ C1] ? arch_stack_walk+0x97/0xf0 [ 59.667432][ C1] ? stack_trace_save+0x8c/0xc0 [ 59.667435][ C1] ? stack_trace_consume_entry+0x160/0x160 [ 59.667437][ C1] ? mark_lock+0xbc/0x1710 [ 59.667438][ C1] ? trace_kmalloc+0xfd/0x130 [ 59.667441][ C1] ? kmem_cache_alloc_trace+0x168/0x2d0 [ 59.667442][ C1] rtnl_newlink+0x64/0xa0 [ 59.667444][ C1] ? __rtnl_newlink+0x1730/0x1730 [ 59.667446][ C1] rtnetlink_rcv_msg+0x44e/0xad0 [ 59.667448][ C1] ? rtnetlink_put_metrics+0x510/0x510 [ 59.667450][ C1] ? lock_acquire+0x1f1/0xad0 [ 59.667452][ C1] ? netlink_deliver_tap+0x146/0xb70 [ 59.667454][ C1] netlink_rcv_skb+0x15a/0x430 [ 59.667457][ C1] ? rtnetlink_put_metrics+0x510/0x510 [ 59.667458][ C1] ? netlink_ack+0xa10/0xa10 [ 59.667460][ C1] netlink_unicast+0x533/0x7d0 [ 59.667462][ C1] ? netlink_attachskb+0x810/0x810 [ 59.667464][ C1] ? _copy_from_iter_full+0x247/0x890 [ 59.667466][ C1] ? __phys_addr+0x9a/0x110 [ 59.667468][ C1] ? __phys_addr_symbol+0x2c/0x70 [ 59.667470][ C1] ? __check_object_size+0x171/0x3e4 [ 59.667472][ C1] netlink_sendmsg+0x856/0xd90 [ 59.667474][ C1] ? netlink_unicast+0x7d0/0x7d0 [ 59.667476][ C1] ? netlink_unicast+0x7d0/0x7d0 [ 59.667478][ C1] sock_sendmsg+0xcf/0x120 [ 59.667480][ C1] ____sys_sendmsg+0x6e8/0x810 [ 59.667482][ C1] ? kernel_sendmsg+0x50/0x50 [ 59.667484][ C1] ? do_recvmmsg+0x6d0/0x6d0 [ 59.667485][ C1] ? find_held_lock+0x2d/0x110 [ 59.667488][ C1] ? lockdep_hardirqs_on_prepare+0x590/0x590 [ 59.667490][ C1] ? __wake_up_common_lock+0xde/0x130 [ 59.667492][ C1] ___sys_sendmsg+0xf3/0x170 [ 59.667494][ C1] ? sendmsg_copy_msghdr+0x160/0x160 [ 59.667496][ C1] ? lock_downgrade+0x820/0x820 [ 59.667498][ C1] ? __might_fault+0x190/0x1d0 [ 59.667500][ C1] ? _copy_to_user+0x126/0x160 [ 59.667502][ C1] ? move_addr_to_user+0xb5/0x200 [ 59.667503][ C1] ? __fget_light+0x215/0x280 [ 59.667505][ C1] __sys_sendmsg+0xe5/0x1b0 [ 59.667507][ C1] ? __sys_sendmsg_sock+0xb0/0xb0 [ 59.667509][ C1] ? do_syscall_64+0x1c/0xe0 [ 59.667511][ C1] ? lockdep_hardirqs_on_prepare+0x3a2/0x590 [ 59.667513][ C1] do_syscall_64+0x60/0xe0 [ 59.667515][ C1] entry_SYSCALL_64_after_hwframe+0x44/0xa9 [ 59.667517][ C1] RIP: 0033:0x440e29 [ 59.667519][ C1] Code: Bad RIP value. [ 59.667521][ C1] RSP: 002b:00007ffd9c20c248 EFLAGS: 00000246 ORIG_RAX: 000000000000002e [ 59.667526][ C1] RAX: ffffffffffffffda RBX: 00000000004a25f0 RCX: 0000000000440e29 [ 59.667529][ C1] RDX: 0000000000000000 RSI: 0000000020000240 RDI: 0000000000000003 [ 59.667532][ C1] RBP: 00007ffd9c20c250 R08: 0000000120080522 R09: 0000000120080522 [ 59.667535][ C1] R10: 0000000120080522 R11: 0000000000000246 R12: 00000000004a25f0 [ 59.667538][ C1] R13: 00000000004023c0 R14: 0000000000000000 R15: 0000000000000000 [ 59.669086][ C1] Kernel Offset: disabled