Warning: Permanently added '10.128.10.37' (ECDSA) to the list of known hosts. executing program syzkaller login: [ 62.122891][ T6796] IPVS: ftp: loaded support on port[0] = 21 [ 62.160282][ T6796] netlink: 24 bytes leftover after parsing attributes in process `syz-executor927'. [ 62.226175][ T6796] device veth1 entered promiscuous mode [ 62.266924][ C1] ------------[ cut here ]------------ [ 62.266929][ C1] WARNING: CPU: 1 PID: 6796 at net/core/dev.c:8992 rollback_registered_many+0xbdb/0xf60 [ 62.266932][ C1] Kernel panic - not syncing: panic_on_warn set ... [ 62.266936][ C1] CPU: 1 PID: 6796 Comm: syz-executor927 Not tainted 5.8.0-rc2-syzkaller #0 [ 62.266939][ C1] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 62.266941][ C1] Call Trace: [ 62.266943][ C1] dump_stack+0x18f/0x20d [ 62.266944][ C1] panic+0x2e3/0x75c [ 62.266946][ C1] ? __warn_printk+0xf3/0xf3 [ 62.266948][ C1] ? printk+0xba/0xed [ 62.266950][ C1] ? log_store.cold+0x16/0x16 [ 62.266951][ C1] ? __warn.cold+0x5/0x45 [ 62.266953][ C1] ? __warn+0xd6/0x1f2 [ 62.266955][ C1] ? rollback_registered_many+0xbdb/0xf60 [ 62.266957][ C1] __warn.cold+0x20/0x45 [ 62.266959][ C1] ? rollback_registered_many+0xbdb/0xf60 [ 62.266961][ C1] report_bug+0x1bd/0x210 [ 62.266963][ C1] exc_invalid_op+0x24d/0x400 [ 62.266965][ C1] ? exc_overflow+0x40/0x40 [ 62.266967][ C1] ? mark_lock+0xbc/0x1710 [ 62.266969][ C1] asm_exc_invalid_op+0x12/0x20 [ 62.266971][ C1] RIP: 0010:rollback_registered_many+0xbdb/0xf60 [ 62.266979][ 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 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 [ 62.266981][ C1] RSP: 0018:ffffc90001576f60 EFLAGS: 00010293 [ 62.266986][ C1] RAX: 0000000000000000 RBX: dffffc0000000000 RCX: ffffffff8634eef5 [ 62.266989][ C1] RDX: ffff888091172200 RSI: ffffffff8634f10b RDI: 0000000000000005 [ 62.266992][ C1] RBP: ffff888096c620b8 R08: 0000000000000000 R09: ffffffff8a7b0087 [ 62.266995][ C1] R10: 0000000000000000 R11: 0000000000000000 R12: ffff8880a47b4600 [ 62.266998][ C1] R13: 0000000000034960 R14: ffff888096c62000 R15: 0000000000000000 [ 62.267000][ C1] ? rollback_registered_many+0x9c5/0xf60 [ 62.267002][ C1] ? rollback_registered_many+0xbdb/0xf60 [ 62.267005][ C1] ? dev_xdp_uninstall+0x3f0/0x3f0 [ 62.267007][ C1] ? dev_set_mtu_ext+0x590/0x590 [ 62.267009][ C1] unregister_netdevice_queue+0x2dd/0x570 [ 62.267011][ C1] ? unregister_netdevice_many+0x50/0x50 [ 62.267013][ C1] ? hsr_add_port+0x4f3/0x790 [ 62.267015][ C1] hsr_dev_finalize+0x5ce/0x746 [ 62.267017][ C1] hsr_newlink+0x27c/0x520 [ 62.267018][ C1] ? hsr_dellink+0x70/0x70 [ 62.267020][ C1] ? rtnl_create_link+0x184/0xad0 [ 62.267022][ C1] ? hsr_dellink+0x70/0x70 [ 62.267024][ C1] __rtnl_newlink+0x1090/0x1730 [ 62.267026][ C1] ? rtnl_setlink+0x3c0/0x3c0 [ 62.267028][ C1] ? lock_downgrade+0x820/0x820 [ 62.267030][ C1] ? check_preemption_disabled+0x38/0x220 [ 62.267032][ C1] ? is_bpf_text_address+0xcb/0x160 [ 62.267034][ C1] ? kernel_text_address+0xbd/0xf0 [ 62.267036][ C1] ? __kernel_text_address+0x9/0x30 [ 62.267039][ C1] ? unwind_get_return_address+0x51/0x90 [ 62.267041][ C1] ? profile_setup.cold+0xc1/0xc1 [ 62.267043][ C1] ? arch_stack_walk+0x97/0xf0 [ 62.267045][ C1] ? stack_trace_save+0x8c/0xc0 [ 62.267047][ C1] ? stack_trace_consume_entry+0x160/0x160 [ 62.267049][ C1] ? mark_lock+0xbc/0x1710 [ 62.267051][ C1] ? trace_kmalloc+0xfd/0x130 [ 62.267053][ C1] ? kmem_cache_alloc_trace+0x168/0x2d0 [ 62.267055][ C1] rtnl_newlink+0x64/0xa0 [ 62.267057][ C1] ? __rtnl_newlink+0x1730/0x1730 [ 62.267059][ C1] rtnetlink_rcv_msg+0x44e/0xad0 [ 62.267061][ C1] ? rtnetlink_put_metrics+0x510/0x510 [ 62.267063][ C1] ? lock_acquire+0x1f1/0xad0 [ 62.267065][ C1] ? netlink_deliver_tap+0x146/0xb70 [ 62.267067][ C1] netlink_rcv_skb+0x15a/0x430 [ 62.267069][ C1] ? rtnetlink_put_metrics+0x510/0x510 [ 62.267071][ C1] ? netlink_ack+0xa10/0xa10 [ 62.267073][ C1] netlink_unicast+0x533/0x7d0 [ 62.267075][ C1] ? netlink_attachskb+0x810/0x810 [ 62.267077][ C1] ? _copy_from_iter_full+0x247/0x890 [ 62.267079][ C1] ? __phys_addr+0x9a/0x110 [ 62.267081][ C1] ? __phys_addr_symbol+0x2c/0x70 [ 62.267083][ C1] ? __check_object_size+0x171/0x3e4 [ 62.267085][ C1] netlink_sendmsg+0x856/0xd90 [ 62.267087][ C1] ? netlink_unicast+0x7d0/0x7d0 [ 62.267089][ C1] ? netlink_unicast+0x7d0/0x7d0 [ 62.267090][ C1] sock_sendmsg+0xcf/0x120 [ 62.267092][ C1] ____sys_sendmsg+0x6e8/0x810 [ 62.267094][ C1] ? kernel_sendmsg+0x50/0x50 [ 62.267096][ C1] ? do_recvmmsg+0x6d0/0x6d0 [ 62.267098][ C1] ? find_held_lock+0x2d/0x110 [ 62.267100][ C1] ? lockdep_hardirqs_on_prepare+0x590/0x590 [ 62.267102][ C1] ? __wake_up_common_lock+0xde/0x130 [ 62.267104][ C1] ___sys_sendmsg+0xf3/0x170 [ 62.267106][ C1] ? sendmsg_copy_msghdr+0x160/0x160 [ 62.267108][ C1] ? lock_downgrade+0x820/0x820 [ 62.267110][ C1] ? __might_fault+0x190/0x1d0 [ 62.267112][ C1] ? _copy_to_user+0x126/0x160 [ 62.267114][ C1] ? move_addr_to_user+0xb5/0x200 [ 62.267116][ C1] ? __fget_light+0x215/0x280 [ 62.267119][ C1] __sys_sendmsg+0xe5/0x1b0 [ 62.267122][ C1] ? __sys_sendmsg_sock+0xb0/0xb0 [ 62.267124][ C1] ? check_preemption_disabled+0x38/0x220 [ 62.267126][ C1] ? do_syscall_64+0x1c/0xe0 [ 62.267128][ C1] ? lockdep_hardirqs_on_prepare+0x3a2/0x590 [ 62.267130][ C1] do_syscall_64+0x60/0xe0 [ 62.267132][ C1] entry_SYSCALL_64_after_hwframe+0x44/0xa9 [ 62.267134][ C1] RIP: 0033:0x440e29 [ 62.267136][ C1] Code: Bad RIP value. [ 62.267138][ C1] RSP: 002b:00007ffdad1d3338 EFLAGS: 00000246 ORIG_RAX: 000000000000002e [ 62.267143][ C1] RAX: ffffffffffffffda RBX: 00000000004a25f0 RCX: 0000000000440e29 [ 62.267146][ C1] RDX: 0000000000000000 RSI: 0000000020000240 RDI: 0000000000000003 [ 62.267149][ C1] RBP: 00007ffdad1d3340 R08: 0000000120080522 R09: 0000000120080522 [ 62.267152][ C1] R10: 0000000120080522 R11: 0000000000000246 R12: 00000000004a25f0 [ 62.267155][ C1] R13: 00000000004023c0 R14: 0000000000000000 R15: 0000000000000000 [ 62.268609][ C1] Kernel Offset: disabled