nfqueue_tg_check: 19 callbacks suppressed xt_NFQUEUE: number of total queues is 0 ------------[ cut here ]------------ proc_dir_entry 'ipt_CLUSTERIP/127.0.0.1' already registered WARNING: CPU: 1 PID: 26483 at fs/proc/generic.c:359 proc_register+0x3d4/0x540 fs/proc/generic.c:359 Kernel panic - not syncing: panic_on_warn set ... CPU: 1 PID: 26483 Comm: syz-executor.4 Not tainted 4.19.121-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 Call Trace: __dump_stack lib/dump_stack.c:77 [inline] dump_stack+0x188/0x20d lib/dump_stack.c:118 panic+0x26a/0x50e kernel/panic.c:186 __warn.cold+0x20/0x46 kernel/panic.c:541 report_bug+0x262/0x2a0 lib/bug.c:186 fixup_bug arch/x86/kernel/traps.c:178 [inline] fixup_bug arch/x86/kernel/traps.c:173 [inline] do_error_trap+0x1d7/0x310 arch/x86/kernel/traps.c:296 invalid_op+0x14/0x20 arch/x86/entry/entry_64.S:1037 RIP: 0010:proc_register+0x3d4/0x540 fs/proc/generic.c:359 Code: ff df 48 89 f9 48 c1 e9 03 80 3c 01 00 0f 85 61 01 00 00 48 8b 04 24 48 c7 c7 20 eb 96 87 48 8b b0 d0 00 00 00 e8 a7 1e 76 ff <0f> 0b 48 c7 c7 00 62 e7 88 e8 7e da 5a 05 48 8b 4c 24 28 48 b8 00 RSP: 0018:ffff888214c776a8 EFLAGS: 00010286 RAX: 0000000000000000 RBX: ffff888051860ef0 RCX: 0000000000000000 RDX: 00000000000155ef RSI: ffffffff8152fab1 RDI: ffffed104298eec7 RBP: ffff8880a3946e00 R08: ffff88802cc74540 R09: ffffed1015ce5079 R10: ffffed1015ce5078 R11: ffff8880ae7283c7 R12: 0000000000000000 R13: dffffc0000000000 R14: ffff8880968d1838 R15: 0000000000000009 proc_create_data+0xc4/0x120 fs/proc/generic.c:548 clusterip_config_init net/ipv4/netfilter/ipt_CLUSTERIP.c:285 [inline] clusterip_tg_check+0x1101/0x1627 net/ipv4/netfilter/ipt_CLUSTERIP.c:506 xt_check_target+0x267/0x650 net/netfilter/x_tables.c:1024 check_target net/ipv4/netfilter/ip_tables.c:514 [inline] find_check_entry.isra.0+0x6f0/0x8d0 net/ipv4/netfilter/ip_tables.c:556 translate_table+0xbcc/0x1610 net/ipv6/netfilter/ip6_tables.c:736 do_replace net/ipv4/netfilter/ip_tables.c:1139 [inline] do_ipt_set_ctl+0x29d/0x41f net/ipv4/netfilter/ip_tables.c:1675 nf_sockopt net/netfilter/nf_sockopt.c:106 [inline] nf_setsockopt+0x6f/0xc0 net/netfilter/nf_sockopt.c:115 ip_setsockopt net/ipv4/ip_sockglue.c:1258 [inline] ip_setsockopt+0xd8/0xf0 net/ipv4/ip_sockglue.c:1238 udp_setsockopt+0x5d/0xa0 net/ipv4/udp.c:2549 __sys_setsockopt+0x14d/0x240 net/socket.c:1901 __do_sys_setsockopt net/socket.c:1912 [inline] __se_sys_setsockopt net/socket.c:1909 [inline] __x64_sys_setsockopt+0xba/0x150 net/socket.c:1909 do_syscall_64+0xf9/0x620 arch/x86/entry/common.c:293 entry_SYSCALL_64_after_hwframe+0x49/0xbe RIP: 0033:0x45c829 Code: 0d b7 fb ff c3 66 2e 0f 1f 84 00 00 00 00 00 66 90 48 89 f8 48 89 f7 48 89 d6 48 89 ca 4d 89 c2 4d 89 c8 4c 8b 4c 24 08 0f 05 <48> 3d 01 f0 ff ff 0f 83 db b6 fb ff c3 66 2e 0f 1f 84 00 00 00 00 RSP: 002b:00007f2d9516bc78 EFLAGS: 00000246 ORIG_RAX: 0000000000000036 RAX: ffffffffffffffda RBX: 0000000000501ba0 RCX: 000000000045c829 RDX: 0000000000000040 RSI: 0004000000000000 RDI: 0000000000000003 RBP: 000000000078bfa0 R08: 0000000000000260 R09: 0000000000000000 R10: 0000000020000000 R11: 0000000000000246 R12: 00000000ffffffff R13: 0000000000000a3f R14: 00000000004cce86 R15: 00007f2d9516c6d4 Kernel Offset: disabled Rebooting in 86400 seconds..