------------[ cut here ]------------
precision 1048489 too large
WARNING: CPU: 1 PID: 16035 at lib/vsprintf.c:2164 set_precision lib/vsprintf.c:2164 [inline]
WARNING: CPU: 1 PID: 16035 at lib/vsprintf.c:2164 vsnprintf+0x2e77/0x3450 lib/vsprintf.c:2240
Kernel panic - not syncing: panic_on_warn set ...

CPU: 1 PID: 16035 Comm: syz-executor7 Not tainted 4.18.0-rc4+ #25
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+0x185/0x1e0 lib/dump_stack.c:113
 panic+0x3d0/0x9b0 kernel/panic.c:184
 __warn+0x40f/0x580 kernel/panic.c:536
 report_bug+0x72a/0x880 lib/bug.c:186
 fixup_bug arch/x86/kernel/traps.c:179 [inline]
 do_error_trap+0x1fe/0x710 arch/x86/kernel/traps.c:298
 do_invalid_op+0x46/0x50 arch/x86/kernel/traps.c:318
 invalid_op+0x14/0x20 arch/x86/entry/entry_64.S:999
RIP: 0010:set_precision lib/vsprintf.c:2164 [inline]
RIP: 0010:vsnprintf+0x2e77/0x3450 lib/vsprintf.c:2240
Code: 00 00 89 88 48 06 00 00 89 90 68 09 00 00 48 c7 80 80 0c 00 00 00 00 00 00 48 c7 c7 28 0a ed 8a 31 c0 44 89 fe e8 b9 b4 ed f6 <0f> 0b 48 8b 45 c8 48 89 85 60 ff ff ff 48 8d 7d c8 e8 03 cf 90 f7 
RSP: 0018:ffff88010d9df630 EFLAGS: 00010046
RAX: 8ccde9e0c5686700 RBX: ffa900000fffa900 RCX: 8ccde9e0c5686700
RDX: ffffc9000239e000 RSI: 0000000000000103 RDI: 0000000000000104
RBP: ffff88010d9df748 R08: ffffffff7fffffff R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000000 R12: ffffffff8ba0158a
R13: ffffffffffffffa9 R14: 0000000000000000 R15: 00000000000fffa9
 vscnprintf+0xc2/0x180 lib/vsprintf.c:2370
 vprintk_emit+0x246/0x1120 kernel/printk/printk.c:1861
 vprintk_default+0x90/0xa0 kernel/printk/printk.c:1956
 vprintk_func+0x132/0x170 kernel/printk/printk_safe.c:382
 printk+0x1f1/0x230 kernel/printk/printk.c:1992
 dns_resolver_preparse+0x10e6/0x1770 net/dns_resolver/dns_key.c:130
 key_create_or_update+0x822/0x1ce0 security/keys/key.c:849
 __do_sys_add_key security/keys/keyctl.c:122 [inline]
 __se_sys_add_key+0x760/0x9c0 security/keys/keyctl.c:62
 __x64_sys_add_key+0x15d/0x1b0 security/keys/keyctl.c:62
 do_syscall_64+0x15b/0x230 arch/x86/entry/common.c:290
 entry_SYSCALL_64_after_hwframe+0x63/0xe7
RIP: 0033:0x455a79
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:00007f462da52c68 EFLAGS: 00000246 ORIG_RAX: 00000000000000f8
RAX: ffffffffffffffda RBX: 00007f462da536d4 RCX: 0000000000455a79
RDX: 00000000200000c0 RSI: 0000000020000000 RDI: 0000000020000080
RBP: 000000000072bea0 R08: fffffffffffffffb R09: 0000000000000000
R10: 00000000000fffff R11: 0000000000000246 R12: 00000000ffffffff
R13: 00000000004bb4e7 R14: 00000000004c8760 R15: 0000000000000000
Dumping ftrace buffer:
   (ftrace buffer empty)
Kernel Offset: disabled