------------[ cut here ]------------
name len 0
WARNING: CPU: 0 PID: 11700 at fs/proc/generic.c:354 __proc_create+0x6ac/0x890 fs/proc/generic.c:354
Kernel panic - not syncing: panic_on_warn set ...

CPU: 0 PID: 11700 Comm: syz-executor5 Not tainted 4.16.0-rc1+ #309
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:988
RIP: 0010:__proc_create+0x6ac/0x890 fs/proc/generic.c:354
RSP: 0018:ffff8801a231f258 EFLAGS: 00010282
RAX: dffffc0000000008 RBX: 1ffff10034463e50 RCX: ffffffff815aaf3e
RDX: 0000000000003cfd RSI: ffffc90002ec9000 RDI: 1ffff10034463dd0
RBP: ffff8801a231f3c8 R08: 1ffff10034463d92 R09: 0000000000000000
R10: ffff8801a231f110 R11: 0000000000000000 R12: ffff8801a977c6a8
R13: ffff8801a231f3a0 R14: 0000000000000000 R15: ffff8801a231f360
 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_v2+0x495/0x640 net/netfilter/xt_hashlimit.c:944
audit: type=1400 audit(1518438578.224:81): avc:  denied  { map } for  pid=11735 comm="syz-executor3" path="/dev/loop0" dev="devtmpfs" ino=9147 scontext=unconfined_u:system_r:insmod_t:s0-s0:c0.c1023 tcontext=system_u:object_r:fixed_disk_device_t:s0 tclass=blk_file permissive=1
 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
 udp_setsockopt+0x45/0x80 net/ipv4/udp.c:2401
 ipv6_setsockopt+0xa0/0x130 net/ipv6/ipv6_sockglue.c:917
 tcp_setsockopt+0x82/0xd0 net/ipv4/tcp.c:2905
 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
 do_syscall_64+0x282/0x940 arch/x86/entry/common.c:287
 entry_SYSCALL_64_after_hwframe+0x26/0x9b
RIP: 0033:0x453a59
RSP: 002b:00007f11cfc77c68 EFLAGS: 00000246 ORIG_RAX: 0000000000000036
RAX: ffffffffffffffda RBX: 00007f11cfc786d4 RCX: 0000000000453a59
RDX: 0000000000000040 RSI: 0000000000000000 RDI: 0000000000000013
RBP: 000000000071bea0 R08: 0000000000000438 R09: 0000000000000000
R10: 0000000020023000 R11: 0000000000000246 R12: 00000000ffffffff
R13: 00000000000004d5 R14: 00000000006f7498 R15: 0000000000000000
Dumping ftrace buffer:
   (ftrace buffer empty)
Kernel Offset: disabled
Rebooting in 86400 seconds..