Warning: Permanently added '10.128.0.57' (ECDSA) to the list of known hosts. executing program syzkaller login: [ 56.103963][ T6801] ------------[ cut here ]------------ [ 56.109705][ T6801] hook not found, pf 2 num 0 [ 56.110082][ T6801] WARNING: CPU: 0 PID: 6801 at net/netfilter/core.c:413 __nf_unregister_net_hook+0x1eb/0x500 [ 56.125461][ T6801] Kernel panic - not syncing: panic_on_warn set ... [ 56.132067][ T6801] CPU: 0 PID: 6801 Comm: syz-executor571 Not tainted 5.8.0-rc4-syzkaller #0 [ 56.140842][ T6801] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 56.150914][ T6801] Call Trace: [ 56.154222][ T6801] dump_stack+0x18f/0x20d [ 56.158756][ T6801] panic+0x2e3/0x75c [ 56.162689][ T6801] ? __warn_printk+0xf3/0xf3 [ 56.167287][ T6801] ? __warn.cold+0x5/0x45 [ 56.171801][ T6801] ? __warn+0xd6/0x1f2 [ 56.176418][ T6801] ? __nf_unregister_net_hook+0x1eb/0x500 [ 56.182137][ T6801] __warn.cold+0x20/0x45 [ 56.186508][ T6801] ? __nf_unregister_net_hook+0x1eb/0x500 [ 56.192335][ T6801] report_bug+0x1bd/0x210 [ 56.196677][ T6801] handle_bug+0x38/0x90 [ 56.200843][ T6801] ? __warn_printk+0xc6/0xf3 [ 56.205638][ T6801] exc_invalid_op+0x13/0x40 [ 56.210143][ T6801] asm_exc_invalid_op+0x12/0x20 [ 56.215216][ T6801] RIP: 0010:__nf_unregister_net_hook+0x1eb/0x500 [ 56.221547][ T6801] Code: 0f b6 14 02 48 89 c8 83 e0 07 83 c0 03 38 d0 7c 08 84 d2 0f 85 09 03 00 00 8b 53 1c 89 ee 48 c7 c7 e0 d3 02 89 e8 37 92 d7 fa <0f> 0b e9 b1 00 00 00 e8 c9 51 06 fb 44 8b 3c 24 4c 89 f8 48 c1 e0 [ 56.241158][ T6801] RSP: 0018:ffffc900014773e0 EFLAGS: 00010286 [ 56.247219][ T6801] RAX: 0000000000000000 RBX: ffff8880954ad000 RCX: 0000000000000000 [ 56.255184][ T6801] RDX: ffff8880972aa3c0 RSI: ffffffff815d4f87 RDI: fffff5200028ee6e [ 56.263151][ T6801] RBP: 0000000000000002 R08: 0000000000000000 R09: 0000000000000000 [ 56.271371][ T6801] R10: 000000000000059a R11: 0000000000000000 R12: ffffffff8a7a8048 [ 56.279553][ T6801] R13: 0000000000000000 R14: ffff8880a6b91e00 R15: 0000000000000005 [ 56.287546][ T6801] ? vprintk_func+0x97/0x1a6 [ 56.292156][ T6801] nf_unregister_net_hook+0x59/0xa0 [ 56.297351][ T6801] nft_table_disable+0xb3/0x2d0 [ 56.302204][ T6801] nf_tables_commit+0x2dcf/0x4155 [ 56.307343][ T6801] ? nf_tables_setelem_notify.constprop.0+0x1e0/0x1e0 [ 56.314118][ T6801] ? __nla_parse+0x3d/0x4a [ 56.318544][ T6801] nfnetlink_rcv_batch+0xb2c/0x1de0 [ 56.323789][ T6801] ? __nf_tables_abort+0x2421/0x2f50 [ 56.329092][ T6801] ? nfnetlink_bind+0x2b0/0x2b0 [ 56.333954][ T6801] ? lock_is_held_type+0xb0/0xe0 [ 56.338907][ T6801] ? nla_get_range_signed+0x520/0x520 [ 56.344277][ T6801] ? netlink_deliver_tap+0x146/0xb70 [ 56.349559][ T6801] ? apparmor_capable+0x1d8/0x460 [ 56.354634][ T6801] ? security_capable+0x8f/0xc0 [ 56.359494][ T6801] ? __nla_parse+0x3d/0x4a [ 56.363904][ T6801] nfnetlink_rcv+0x3af/0x420 [ 56.368499][ T6801] ? nfnetlink_rcv_batch+0x1de0/0x1de0 [ 56.373951][ T6801] netlink_unicast+0x533/0x7d0 [ 56.378719][ T6801] ? netlink_attachskb+0x810/0x810 [ 56.383838][ T6801] ? _copy_from_iter_full+0x247/0x890 [ 56.389230][ T6801] ? __phys_addr+0x9a/0x110 [ 56.393754][ T6801] ? __phys_addr_symbol+0x2c/0x70 [ 56.398785][ T6801] ? __check_object_size+0x171/0x3e4 [ 56.404073][ T6801] netlink_sendmsg+0x856/0xd90 [ 56.408834][ T6801] ? netlink_unicast+0x7d0/0x7d0 [ 56.413779][ T6801] ? netlink_unicast+0x7d0/0x7d0 [ 56.418712][ T6801] sock_sendmsg+0xcf/0x120 [ 56.423115][ T6801] ____sys_sendmsg+0x6e8/0x810 [ 56.427884][ T6801] ? kernel_sendmsg+0x50/0x50 [ 56.432563][ T6801] ? do_recvmmsg+0x6d0/0x6d0 [ 56.437149][ T6801] ? lock_acquire+0x1f1/0xad0 [ 56.441845][ T6801] ? do_huge_pmd_anonymous_page+0x120d/0x2230 [ 56.447916][ T6801] ? find_held_lock+0x2d/0x110 [ 56.452674][ T6801] ___sys_sendmsg+0xf3/0x170 [ 56.457263][ T6801] ? sendmsg_copy_msghdr+0x160/0x160 [ 56.462559][ T6801] ? lockdep_hardirqs_on_prepare+0x3a2/0x590 [ 56.468622][ T6801] ? do_huge_pmd_anonymous_page+0x8ef/0x2230 [ 56.474620][ T6801] ? handle_mm_fault+0xad9/0x43f0 [ 56.479645][ T6801] ? find_held_lock+0x2d/0x110 [ 56.484403][ T6801] ? __fget_light+0x215/0x280 [ 56.489095][ T6801] __sys_sendmsg+0xe5/0x1b0 [ 56.493621][ T6801] ? __sys_sendmsg_sock+0xb0/0xb0 [ 56.498648][ T6801] ? do_syscall_64+0x1c/0xe0 [ 56.503251][ T6801] ? lockdep_hardirqs_on_prepare+0x3a2/0x590 [ 56.509236][ T6801] do_syscall_64+0x60/0xe0 [ 56.513668][ T6801] entry_SYSCALL_64_after_hwframe+0x44/0xa9 [ 56.519570][ T6801] RIP: 0033:0x440709 [ 56.523445][ T6801] Code: Bad RIP value. [ 56.527533][ T6801] RSP: 002b:00007ffffab7dcd8 EFLAGS: 00000246 ORIG_RAX: 000000000000002e [ 56.535930][ T6801] RAX: ffffffffffffffda RBX: 00000000004002c8 RCX: 0000000000440709 [ 56.543936][ T6801] RDX: 0000000000000000 RSI: 000000002000c2c0 RDI: 0000000000000003 [ 56.551904][ T6801] RBP: 00000000006ca018 R08: 0000000000000000 R09: 00000000004002c8 [ 56.559876][ T6801] R10: 0000000000000003 R11: 0000000000000246 R12: 0000000000401f10 [ 56.567866][ T6801] R13: 0000000000401fa0 R14: 0000000000000000 R15: 0000000000000000 [ 56.577347][ T6801] Kernel Offset: disabled [ 56.581765][ T6801] Rebooting in 86400 seconds..