Warning: Permanently added '10.128.0.83' (ECDSA) to the list of known hosts. executing program syzkaller login: [ 63.164186][ T6816] IPVS: ftp: loaded support on port[0] = 21 [ 63.200191][ T6816] netlink: 24 bytes leftover after parsing attributes in process `syz-executor851'. [ 63.250235][ T6816] device veth1 entered promiscuous mode [ 63.300876][ C0] ------------[ cut here ]------------ [ 63.300882][ C0] WARNING: CPU: 0 PID: 6816 at net/core/dev.c:8992 rollback_registered_many+0xbdb/0xf60 [ 63.300885][ C0] Kernel panic - not syncing: panic_on_warn set ... [ 63.300888][ C0] CPU: 0 PID: 6816 Comm: syz-executor851 Not tainted 5.8.0-rc2-syzkaller #0 [ 63.300892][ C0] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 63.300893][ C0] Call Trace: [ 63.300895][ C0] dump_stack+0x18f/0x20d [ 63.300897][ C0] panic+0x2e3/0x75c [ 63.300899][ C0] ? __warn_printk+0xf3/0xf3 [ 63.300900][ C0] ? printk+0xba/0xed [ 63.300902][ C0] ? log_store.cold+0x16/0x16 [ 63.300904][ C0] ? __warn.cold+0x5/0x45 [ 63.300906][ C0] ? __warn+0xd6/0x1f2 [ 63.300908][ C0] ? rollback_registered_many+0xbdb/0xf60 [ 63.300910][ C0] __warn.cold+0x20/0x45 [ 63.300912][ C0] ? rollback_registered_many+0xbdb/0xf60 [ 63.300914][ C0] report_bug+0x1bd/0x210 [ 63.300915][ C0] exc_invalid_op+0x24d/0x400 [ 63.300917][ C0] ? exc_overflow+0x40/0x40 [ 63.300919][ C0] ? mark_lock+0xbc/0x1710 [ 63.300921][ C0] asm_exc_invalid_op+0x12/0x20 [ 63.300924][ C0] RIP: 0010:rollback_registered_many+0xbdb/0xf60 [ 63.300931][ C0] 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 61 3e fb 0f 0b e9 da fd ff ff e8 45 61 3e fb <0f> 0b e9 18 fe ff ff e8 39 61 3e fb 0f b6 2d fc 5d 74 04 31 ff 89 [ 63.300933][ C0] RSP: 0018:ffffc900015b6f60 EFLAGS: 00010293 [ 63.300938][ C0] RAX: 0000000000000000 RBX: dffffc0000000000 RCX: ffffffff8634eef5 [ 63.300941][ C0] RDX: ffff88808b242100 RSI: ffffffff8634f10b RDI: 0000000000000005 [ 63.300944][ C0] RBP: ffff888096f840b8 R08: 0000000000000000 R09: ffffffff8a7b0087 [ 63.300947][ C0] R10: 0000000000000000 R11: 0000000000000000 R12: ffff8880947d2a00 [ 63.300950][ C0] R13: 0000000000034960 R14: ffff888096f84000 R15: 0000000000000000 [ 63.300952][ C0] ? rollback_registered_many+0x9c5/0xf60 [ 63.300955][ C0] ? rollback_registered_many+0xbdb/0xf60 [ 63.300957][ C0] ? dev_xdp_uninstall+0x3f0/0x3f0 [ 63.300959][ C0] ? dev_set_mtu_ext+0x590/0x590 [ 63.300961][ C0] unregister_netdevice_queue+0x2dd/0x570 [ 63.300963][ C0] ? unregister_netdevice_many+0x50/0x50 [ 63.300965][ C0] ? hsr_add_port+0x4f3/0x790 [ 63.300967][ C0] hsr_dev_finalize+0x5ce/0x746 [ 63.300969][ C0] hsr_newlink+0x27c/0x520 [ 63.300971][ C0] ? hsr_dellink+0x70/0x70 [ 63.300973][ C0] ? rtnl_create_link+0x184/0xad0 [ 63.300974][ C0] ? hsr_dellink+0x70/0x70 [ 63.300976][ C0] __rtnl_newlink+0x1090/0x1730 [ 63.300978][ C0] ? rtnl_setlink+0x3c0/0x3c0 [ 63.300980][ C0] ? lock_downgrade+0x820/0x820 [ 63.300983][ C0] ? check_preemption_disabled+0x38/0x220 [ 63.300985][ C0] ? is_bpf_text_address+0xcb/0x160 [ 63.300987][ C0] ? kernel_text_address+0xbd/0xf0 [ 63.300989][ C0] ? __kernel_text_address+0x9/0x30 [ 63.300991][ C0] ? unwind_get_return_address+0x51/0x90 [ 63.300993][ C0] ? profile_setup.cold+0xc1/0xc1 [ 63.300995][ C0] ? arch_stack_walk+0x97/0xf0 [ 63.300997][ C0] ? stack_trace_save+0x8c/0xc0 [ 63.300999][ C0] ? stack_trace_consume_entry+0x160/0x160 [ 63.301001][ C0] ? mark_lock+0xbc/0x1710 [ 63.301003][ C0] ? trace_kmalloc+0xfd/0x130 [ 63.301005][ C0] ? kmem_cache_alloc_trace+0x168/0x2d0 [ 63.301007][ C0] rtnl_newlink+0x64/0xa0 [ 63.301009][ C0] ? __rtnl_newlink+0x1730/0x1730 [ 63.301011][ C0] rtnetlink_rcv_msg+0x44e/0xad0 [ 63.301013][ C0] ? rtnetlink_put_metrics+0x510/0x510 [ 63.301015][ C0] ? lock_acquire+0x1f1/0xad0 [ 63.301017][ C0] ? netlink_deliver_tap+0x146/0xb70 [ 63.301019][ C0] netlink_rcv_skb+0x15a/0x430 [ 63.301021][ C0] ? rtnetlink_put_metrics+0x510/0x510 [ 63.301023][ C0] ? netlink_ack+0xa10/0xa10 [ 63.301025][ C0] netlink_unicast+0x533/0x7d0 [ 63.301027][ C0] ? netlink_attachskb+0x810/0x810 [ 63.301029][ C0] ? _copy_from_iter_full+0x247/0x890 [ 63.301031][ C0] ? __phys_addr+0x9a/0x110 [ 63.301033][ C0] ? __phys_addr_symbol+0x2c/0x70 [ 63.301035][ C0] ? __check_object_size+0x171/0x3e4 [ 63.301037][ C0] netlink_sendmsg+0x856/0xd90 [ 63.301039][ C0] ? netlink_unicast+0x7d0/0x7d0 [ 63.301041][ C0] ? netlink_unicast+0x7d0/0x7d0 [ 63.301043][ C0] sock_sendmsg+0xcf/0x120 [ 63.301044][ C0] ____sys_sendmsg+0x6e8/0x810 [ 63.301046][ C0] ? kernel_sendmsg+0x50/0x50 [ 63.301048][ C0] ? do_recvmmsg+0x6d0/0x6d0 [ 63.301050][ C0] ? find_held_lock+0x2d/0x110 [ 63.301052][ C0] ? lockdep_hardirqs_on_prepare+0x590/0x590 [ 63.301055][ C0] ? __wake_up_common_lock+0xde/0x130 [ 63.301056][ C0] ___sys_sendmsg+0xf3/0x170 [ 63.301059][ C0] ? sendmsg_copy_msghdr+0x160/0x160 [ 63.301061][ C0] ? lock_downgrade+0x820/0x820 [ 63.301062][ C0] ? __might_fault+0x190/0x1d0 [ 63.301064][ C0] ? _copy_to_user+0x126/0x160 [ 63.301066][ C0] ? move_addr_to_user+0xb5/0x200 [ 63.301068][ C0] ? __fget_light+0x215/0x280 [ 63.301070][ C0] __sys_sendmsg+0xe5/0x1b0 [ 63.301072][ C0] ? __sys_sendmsg_sock+0xb0/0xb0 [ 63.301074][ C0] ? do_syscall_64+0x1c/0xe0 [ 63.301076][ C0] ? lockdep_hardirqs_on_prepare+0x3a2/0x590 [ 63.301078][ C0] do_syscall_64+0x60/0xe0 [ 63.301080][ C0] entry_SYSCALL_64_after_hwframe+0x44/0xa9 [ 63.301082][ C0] RIP: 0033:0x440e29 [ 63.301084][ C0] Code: Bad RIP value. [ 63.301086][ C0] RSP: 002b:00007ffcf4861f38 EFLAGS: 00000246 ORIG_RAX: 000000000000002e [ 63.301091][ C0] RAX: ffffffffffffffda RBX: 00000000004a25f0 RCX: 0000000000440e29 [ 63.301094][ C0] RDX: 0000000000000000 RSI: 0000000020000240 RDI: 0000000000000003 [ 63.301097][ C0] RBP: 00007ffcf4861f40 R08: 0000000120080522 R09: 0000000120080522 [ 63.301100][ C0] R10: 0000000120080522 R11: 0000000000000246 R12: 00000000004a25f0 [ 63.301103][ C0] R13: 00000000004023c0 R14: 0000000000000000 R15: 0000000000000000 [ 63.302787][ C0] Kernel Offset: disabled