Warning: Permanently added '10.128.1.27' (ECDSA) to the list of known hosts. executing program syzkaller login: [ 65.210666][ T6806] IPVS: ftp: loaded support on port[0] = 21 [ 65.249848][ T6806] netlink: 24 bytes leftover after parsing attributes in process `syz-executor882'. [ 65.293848][ T6806] device veth1 entered promiscuous mode [ 65.344599][ C1] ------------[ cut here ]------------ [ 65.344605][ C1] WARNING: CPU: 1 PID: 6806 at net/core/dev.c:8992 rollback_registered_many+0xbdb/0xf60 [ 65.344608][ C1] Kernel panic - not syncing: panic_on_warn set ... [ 65.344612][ C1] CPU: 1 PID: 6806 Comm: syz-executor882 Not tainted 5.8.0-rc2-syzkaller #0 [ 65.344621][ C1] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 65.344623][ C1] Call Trace: [ 65.344625][ C1] dump_stack+0x18f/0x20d [ 65.344626][ C1] panic+0x2e3/0x75c [ 65.344628][ C1] ? __warn_printk+0xf3/0xf3 [ 65.344630][ C1] ? printk+0xba/0xed [ 65.344632][ C1] ? log_store.cold+0x16/0x16 [ 65.344634][ C1] ? __warn.cold+0x5/0x45 [ 65.344635][ C1] ? __warn+0xd6/0x1f2 [ 65.344638][ C1] ? rollback_registered_many+0xbdb/0xf60 [ 65.344640][ C1] __warn.cold+0x20/0x45 [ 65.344642][ C1] ? rollback_registered_many+0xbdb/0xf60 [ 65.344644][ C1] report_bug+0x1bd/0x210 [ 65.344646][ C1] exc_invalid_op+0x24d/0x400 [ 65.344648][ C1] ? exc_overflow+0x40/0x40 [ 65.344649][ C1] ? mark_lock+0xbc/0x1710 [ 65.344651][ C1] asm_exc_invalid_op+0x12/0x20 [ 65.344654][ C1] RIP: 0010:rollback_registered_many+0xbdb/0xf60 [ 65.344662][ C1] 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 e1 56 3e fb 0f 0b e9 da fd ff ff e8 d5 56 3e fb <0f> 0b e9 18 fe ff ff e8 c9 56 3e fb 0f b6 2d 2e 58 74 04 31 ff 89 [ 65.344664][ C1] RSP: 0018:ffffc90001096f60 EFLAGS: 00010293 [ 65.344670][ C1] RAX: 0000000000000000 RBX: dffffc0000000000 RCX: ffffffff8634f805 [ 65.344673][ C1] RDX: ffff8880905e8180 RSI: ffffffff8634fa1b RDI: 0000000000000005 [ 65.344676][ C1] RBP: ffff888097dec0b8 R08: 0000000000000000 R09: ffffffff8a7b0407 [ 65.344679][ C1] R10: 0000000000000000 R11: 0000000000000000 R12: ffff8880a23bfe00 [ 65.344682][ C1] R13: 0000000000034960 R14: ffff888097dec000 R15: 0000000000000000 [ 65.344685][ C1] ? rollback_registered_many+0x9c5/0xf60 [ 65.344687][ C1] ? rollback_registered_many+0xbdb/0xf60 [ 65.344689][ C1] ? dev_xdp_uninstall+0x3f0/0x3f0 [ 65.344691][ C1] ? dev_set_mtu_ext+0x590/0x590 [ 65.344694][ C1] unregister_netdevice_queue+0x2dd/0x570 [ 65.344696][ C1] ? unregister_netdevice_many+0x50/0x50 [ 65.344698][ C1] ? hsr_add_port+0x4f3/0x790 [ 65.344700][ C1] hsr_dev_finalize+0x5ce/0x746 [ 65.344702][ C1] hsr_newlink+0x27c/0x520 [ 65.344704][ C1] ? hsr_dellink+0x70/0x70 [ 65.344706][ C1] ? rtnl_create_link+0x184/0xad0 [ 65.344708][ C1] ? hsr_dellink+0x70/0x70 [ 65.344710][ C1] __rtnl_newlink+0x1090/0x1730 [ 65.344712][ C1] ? rtnl_setlink+0x3c0/0x3c0 [ 65.344714][ C1] ? lock_downgrade+0x820/0x820 [ 65.344716][ C1] ? check_preemption_disabled+0x38/0x220 [ 65.344718][ C1] ? is_bpf_text_address+0xcb/0x160 [ 65.344720][ C1] ? kernel_text_address+0xbd/0xf0 [ 65.344722][ C1] ? __kernel_text_address+0x9/0x30 [ 65.344725][ C1] ? unwind_get_return_address+0x51/0x90 [ 65.344727][ C1] ? profile_setup.cold+0xc1/0xc1 [ 65.344729][ C1] ? arch_stack_walk+0x97/0xf0 [ 65.344731][ C1] ? stack_trace_save+0x8c/0xc0 [ 65.344733][ C1] ? stack_trace_consume_entry+0x160/0x160 [ 65.344735][ C1] ? mark_lock+0xbc/0x1710 [ 65.344737][ C1] ? trace_kmalloc+0xfd/0x130 [ 65.344739][ C1] ? kmem_cache_alloc_trace+0x168/0x2d0 [ 65.344741][ C1] rtnl_newlink+0x64/0xa0 [ 65.344743][ C1] ? __rtnl_newlink+0x1730/0x1730 [ 65.344745][ C1] rtnetlink_rcv_msg+0x44e/0xad0 [ 65.344748][ C1] ? rtnetlink_put_metrics+0x510/0x510 [ 65.344750][ C1] ? lock_acquire+0x1f1/0xad0 [ 65.344752][ C1] ? netlink_deliver_tap+0x146/0xb70 [ 65.344754][ C1] netlink_rcv_skb+0x15a/0x430 [ 65.344756][ C1] ? rtnetlink_put_metrics+0x510/0x510 [ 65.344758][ C1] ? netlink_ack+0xa10/0xa10 [ 65.344760][ C1] netlink_unicast+0x533/0x7d0 [ 65.344762][ C1] ? netlink_attachskb+0x810/0x810 [ 65.344764][ C1] ? _copy_from_iter_full+0x247/0x890 [ 65.344766][ C1] ? __phys_addr+0x9a/0x110 [ 65.344768][ C1] ? __phys_addr_symbol+0x2c/0x70 [ 65.344770][ C1] ? __check_object_size+0x171/0x3e4 [ 65.344772][ C1] netlink_sendmsg+0x856/0xd90 [ 65.344774][ C1] ? netlink_unicast+0x7d0/0x7d0 [ 65.344777][ C1] ? netlink_unicast+0x7d0/0x7d0 [ 65.344778][ C1] sock_sendmsg+0xcf/0x120 [ 65.344780][ C1] ____sys_sendmsg+0x6e8/0x810 [ 65.344782][ C1] ? kernel_sendmsg+0x50/0x50 [ 65.344784][ C1] ? do_recvmmsg+0x6d0/0x6d0 [ 65.344786][ C1] ? find_held_lock+0x2d/0x110 [ 65.344789][ C1] ? lockdep_hardirqs_on_prepare+0x590/0x590 [ 65.344791][ C1] ? __wake_up_common_lock+0xde/0x130 [ 65.344793][ C1] ___sys_sendmsg+0xf3/0x170 [ 65.344795][ C1] ? sendmsg_copy_msghdr+0x160/0x160 [ 65.344797][ C1] ? lock_downgrade+0x820/0x820 [ 65.344799][ C1] ? __might_fault+0x190/0x1d0 [ 65.344801][ C1] ? _copy_to_user+0x126/0x160 [ 65.344803][ C1] ? move_addr_to_user+0xb5/0x200 [ 65.344805][ C1] ? __fget_light+0x215/0x280 [ 65.344807][ C1] __sys_sendmsg+0xe5/0x1b0 [ 65.344809][ C1] ? __sys_sendmsg_sock+0xb0/0xb0 [ 65.344811][ C1] ? do_syscall_64+0x1c/0xe0 [ 65.344814][ C1] ? lockdep_hardirqs_on_prepare+0x3a2/0x590 [ 65.344815][ C1] do_syscall_64+0x60/0xe0 [ 65.344818][ C1] entry_SYSCALL_64_after_hwframe+0x44/0xa9 [ 65.344820][ C1] RIP: 0033:0x440e29 [ 65.344821][ C1] Code: Bad RIP value. [ 65.344824][ C1] RSP: 002b:00007fffcc5ca1d8 EFLAGS: 00000246 ORIG_RAX: 000000000000002e [ 65.344829][ C1] RAX: ffffffffffffffda RBX: 00000000004a25f0 RCX: 0000000000440e29 [ 65.344832][ C1] RDX: 0000000000000000 RSI: 0000000020000240 RDI: 0000000000000003 [ 65.344836][ C1] RBP: 00007fffcc5ca1e0 R08: 0000000120080522 R09: 0000000120080522 [ 65.344839][ C1] R10: 0000000120080522 R11: 0000000000000246 R12: 00000000004a25f0 [ 65.344842][ C1] R13: 00000000004023c0 R14: 0000000000000000 R15: 0000000000000000 [ 65.347191][ C1] Kernel Offset: disabled