------------[ cut here ]------------
precision 64152 too large
WARNING: CPU: 1 PID: 7271 at lib/vsprintf.c:2192 set_precision+0xc3/0xe0 lib/vsprintf.c:2192
Kernel panic - not syncing: panic_on_warn set ...

CPU: 1 PID: 7271 Comm: syz-executor1 Not tainted 4.18.0-rc4-next-20180710+ #3
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+0x1c9/0x2b4 lib/dump_stack.c:113
 panic+0x238/0x4e7 kernel/panic.c:184
 __warn.cold.8+0x163/0x1ba kernel/panic.c:536
 report_bug+0x252/0x2d0 lib/bug.c:186
 fixup_bug arch/x86/kernel/traps.c:178 [inline]
 do_error_trap+0x1fc/0x4d0 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:996
RIP: 0010:set_precision+0xc3/0xe0 lib/vsprintf.c:2192
Code: fc ff df 80 3c 02 00 75 32 66 41 89 5d 06 eb 9d e8 02 59 e3 f9 89 de 48 c7 c7 40 f8 86 88 c6 05 fb 20 01 02 01 e8 1d 22 ae f9 <0f> 0b eb a7 4c 89 ef e8 41 da 21 fa e9 5a ff ff ff 4c 89 ef e8 34 
RSP: 0018:ffff88018f9c7680 EFLAGS: 00010086
RAX: 0000000000000000 RBX: 000000000000fa98 RCX: ffffc90008e84000
RDX: 000000000000036a RSI: ffffffff816344d0 RDI: 0000000000000001
RBP: ffff88018f9c7698 R08: ffff880197d760c0 R09: ffffed003b5e42cd
R10: ffffed003b5e42cd R11: ffff8801daf2166f R12: 0000000000000000
R13: ffff88018f9c7710 R14: ffffffff8884c60e R15: ffff88018f9c7750
 vsnprintf+0x38b/0x1b60 lib/vsprintf.c:2268
 vscnprintf+0x2d/0x80 lib/vsprintf.c:2398
 vprintk_store+0x43/0x560 kernel/printk/printk.c:1846
 vprintk_emit+0x1c1/0x910 kernel/printk/printk.c:1907
 vprintk_default+0x28/0x30 kernel/printk/printk.c:1965
 vprintk_func+0x7a/0x117 kernel/printk/printk_safe.c:398
 printk+0xa7/0xcf kernel/printk/printk.c:1998
 dns_resolver_preparse.cold.3+0x1fd/0x252 net/dns_resolver/dns_key.c:130
 key_create_or_update+0x583/0x1120 security/keys/key.c:849
 __do_sys_add_key security/keys/keyctl.c:122 [inline]
 __se_sys_add_key security/keys/keyctl.c:62 [inline]
 __x64_sys_add_key+0x3cf/0x4e0 security/keys/keyctl.c:62
 do_syscall_64+0x1b9/0x820 arch/x86/entry/common.c:290
 entry_SYSCALL_64_after_hwframe+0x49/0xbe
RIP: 0033:0x455e29
Code: 1d ba 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 eb b9 fb ff c3 66 2e 0f 1f 84 00 00 00 00 
RSP: 002b:00007f6e257b6c68 EFLAGS: 00000246 ORIG_RAX: 00000000000000f8
RAX: ffffffffffffffda RBX: 00007f6e257b76d4 RCX: 0000000000455e29
RDX: 0000000020000180 RSI: 0000000020000080 RDI: 0000000020000680
RBP: 000000000072bf48 R08: 0000000002b923b5 R09: 0000000000000000
R10: 000000000000fd88 R11: 0000000000000246 R12: 00000000ffffffff
R13: 00000000004bb8f6 R14: 00000000004c89c0 R15: 0000000000000001
Dumping ftrace buffer:
   (ftrace buffer empty)
Kernel Offset: disabled