------------[ cut here ]------------
name len 0
WARNING: CPU: 0 PID: 16148 at fs/proc/generic.c:354 __proc_create+0x696/0x880 fs/proc/generic.c:354
Kernel panic - not syncing: panic_on_warn set ...

CPU: 0 PID: 16148 Comm: syz-executor4 Not tainted 4.15.0+ #221
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
Call Trace:
 __dump_stack lib/dump_stack.c:17 [inline]
 dump_stack+0x194/0x257 lib/dump_stack.c:53
 panic+0x1e4/0x41c kernel/panic.c:183
 __warn+0x1dc/0x200 kernel/panic.c:547
 report_bug+0x211/0x2d0 lib/bug.c:184
 fixup_bug.part.11+0x37/0x80 arch/x86/kernel/traps.c:178
 fixup_bug arch/x86/kernel/traps.c:247 [inline]
 do_error_trap+0x2d7/0x3e0 arch/x86/kernel/traps.c:296
 do_invalid_op+0x1b/0x20 arch/x86/kernel/traps.c:315
 invalid_op+0x22/0x40 arch/x86/entry/entry_64.S:1097
RIP: 0010:__proc_create+0x696/0x880 fs/proc/generic.c:354
RSP: 0018:ffff8801d7ed6d10 EFLAGS: 00010286
RAX: dffffc0000000008 RBX: 1ffff1003afdada7 RCX: ffffffff815a57ae
RDX: 0000000000002b76 RSI: ffffc90003678000 RDI: 1ffff1003afdad27
RBP: ffff8801d7ed6e80 R08: 1ffff1003afdace9 R09: 0000000000000000
R10: ffff8801d7ed6bc8 R11: 0000000000000000 R12: ffff8801a97a0240
R13: ffff8801d7ed6e58 R14: 0000000000000000 R15: ffff8801d7ed6e18
 proc_create_data+0x76/0x180 fs/proc/generic.c:488
 htable_create net/netfilter/xt_hashlimit.c:333 [inline]
 hashlimit_mt_check_common.isra.9+0xaee/0x1420 net/netfilter/xt_hashlimit.c:900
 hashlimit_mt_check_v1+0x48d/0x640 net/netfilter/xt_hashlimit.c:926
 xt_check_match+0x231/0x7d0 net/netfilter/x_tables.c:470
 check_match net/ipv4/netfilter/ip_tables.c:474 [inline]
 find_check_match net/ipv4/netfilter/ip_tables.c:490 [inline]
 find_check_entry.isra.8+0x3fc/0xcb0 net/ipv4/netfilter/ip_tables.c:539
 translate_table+0xed1/0x1610 net/ipv4/netfilter/ip_tables.c:725
 do_replace net/ipv4/netfilter/ip_tables.c:1141 [inline]
 do_ipt_set_ctl+0x370/0x5f0 net/ipv4/netfilter/ip_tables.c:1675
 nf_sockopt net/netfilter/nf_sockopt.c:106 [inline]
 nf_setsockopt+0x67/0xc0 net/netfilter/nf_sockopt.c:115
 ip_setsockopt+0x97/0xa0 net/ipv4/ip_sockglue.c:1259
 sctp_setsockopt+0x2b6/0x61d0 net/sctp/socket.c:4104
 sock_common_setsockopt+0x95/0xd0 net/core/sock.c:2975
 SYSC_setsockopt net/socket.c:1849 [inline]
 SyS_setsockopt+0x189/0x360 net/socket.c:1828
 entry_SYSCALL_64_fastpath+0x29/0xa0
RIP: 0033:0x453299
RSP: 002b:00007f29db024c58 EFLAGS: 00000212 ORIG_RAX: 0000000000000036
RAX: ffffffffffffffda RBX: 000000000071bea0 RCX: 0000000000453299
RDX: 0000000000000040 RSI: 0000000000000000 RDI: 0000000000000013
RBP: 00000000000003d9 R08: 0000000000000328 R09: 0000000000000000
R10: 0000000020015cd8 R11: 0000000000000212 R12: 00000000006f4cf8
R13: 00000000ffffffff R14: 00007f29db0256d4 R15: 0000000000000000
Dumping ftrace buffer:
   (ftrace buffer empty)
Kernel Offset: disabled
Rebooting in 86400 seconds..