x_tables: ip_tables: rpfilter match: used from hooks OUTPUT, but only valid from PREROUTING x_tables: ip_tables: rpfilter match: used from hooks OUTPUT, but only valid from PREROUTING x_tables: ip_tables: rpfilter match: used from hooks OUTPUT, but only valid from PREROUTING ------------[ cut here ]------------ proc_dir_entry 'ipt_CLUSTERIP/172.30.0.1' already registered WARNING: CPU: 1 PID: 15813 at fs/proc/generic.c:374 proc_register+0x2f1/0x4c0 fs/proc/generic.c:373 Kernel panic - not syncing: panic_on_warn set ... CPU: 1 PID: 15813 Comm: syz-executor.0 Not tainted 4.19.208-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+0x17c/0x226 lib/dump_stack.c:118 panic+0x1cd/0x375 kernel/panic.c:186 __warn.cold.7+0x1b/0x36 kernel/panic.c:541 report_bug+0x1a1/0x200 lib/bug.c:183 fixup_bug arch/x86/kernel/traps.c:178 [inline] fixup_bug arch/x86/kernel/traps.c:173 [inline] do_error_trap+0x200/0x350 arch/x86/kernel/traps.c:296 do_invalid_op+0x1b/0x20 arch/x86/kernel/traps.c:316 invalid_op+0x14/0x20 arch/x86/entry/entry_64.S:1038 RIP: 0010:proc_register+0x2f1/0x4c0 fs/proc/generic.c:373 Code: 00 00 00 fc ff df 48 89 f9 48 c1 e9 03 80 3c 01 00 0f 85 bd 01 00 00 48 8b b3 d0 00 00 00 48 c7 c7 e0 ae 15 88 e8 b4 19 d1 05 <0f> 0b 48 c7 c7 20 bd a5 89 e8 51 94 f4 05 4c 89 ea 48 b8 00 00 00 RSP: 0018:ffff888231b17628 EFLAGS: 00010282 RAX: 0000000000000000 RBX: ffff8880a979b000 RCX: 0000000000000000 RDX: 0000000000000004 RSI: ffffffff885024a0 RDI: ffffffff8bad9720 RBP: ffff888231b17678 R08: ffffed1017464ea9 R09: ffffed1017464ea8 R10: ffffed1017464ea8 R11: ffff8880ba327547 R12: ffffed101274390b R13: ffff888093a1c80c R14: ffff888093a1c850 R15: ffff888093a1c780 proc_create_data+0x9f/0xf0 fs/proc/generic.c:567 clusterip_config_init net/ipv4/netfilter/ipt_CLUSTERIP.c:285 [inline] clusterip_tg_check+0xf38/0x14d0 net/ipv4/netfilter/ipt_CLUSTERIP.c:506 xt_check_target+0x200/0x640 net/netfilter/x_tables.c:1023 check_target net/ipv4/netfilter/ip_tables.c:514 [inline] find_check_entry.isra.2+0x630/0x8b0 net/ipv4/netfilter/ip_tables.c:556 translate_table+0xc6b/0x1a30 net/ipv4/netfilter/ip_tables.c:720 do_replace net/ipv4/netfilter/ip_tables.c:1139 [inline] do_ipt_set_ctl+0x259/0x3f0 net/ipv4/netfilter/ip_tables.c:1677 nf_sockopt net/netfilter/nf_sockopt.c:106 [inline] nf_setsockopt+0x5c/0xb0 net/netfilter/nf_sockopt.c:115 ip_setsockopt net/ipv4/ip_sockglue.c:1258 [inline] ip_setsockopt+0x59/0x70 net/ipv4/ip_sockglue.c:1238 udp_setsockopt+0x16/0x30 net/ipv4/udp.c:2556 sock_common_setsockopt+0x73/0xf0 net/core/sock.c:3072 __sys_setsockopt+0x13e/0x210 net/socket.c:2013 __do_sys_setsockopt net/socket.c:2024 [inline] __se_sys_setsockopt net/socket.c:2021 [inline] __x64_sys_setsockopt+0xb9/0x150 net/socket.c:2021 do_syscall_64+0xd0/0x4e0 arch/x86/entry/common.c:293 entry_SYSCALL_64_after_hwframe+0x49/0xbe RIP: 0033:0x4665d9 Code: ff ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 40 00 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 73 01 c3 48 c7 c1 bc ff ff ff f7 d8 64 89 01 48 RSP: 002b:00007f228526e188 EFLAGS: 00000246 ORIG_RAX: 0000000000000036 RAX: ffffffffffffffda RBX: 000000000056bf80 RCX: 00000000004665d9 RDX: 0000000000000040 RSI: 8001000000000000 RDI: 0000000000000005 RBP: 00000000004bfcb9 R08: 00000000000002c0 R09: 0000000000000000 R10: 00000000200004c0 R11: 0000000000000246 R12: 000000000056bf80 R13: 00007fff17c5cacf R14: 00007f228526e300 R15: 0000000000022000 Kernel Offset: disabled Rebooting in 86400 seconds..