general protection fault: 0000 [#1] SMP
Dumping ftrace buffer:
   (ftrace buffer empty)
Modules linked in:
CPU: 0 PID: 6871 Comm: syz-executor6 Not tainted 4.15.0-rc3-next-20171214+ #67
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
RIP: 0010:string+0x53/0x100 lib/vsprintf.c:594
RSP: 0018:ffffc90000e53b30 EFLAGS: 00010012
RAX: 0000000000010000 RBX: 006e656c6e727473 RCX: ffffffff825bba13
RDX: 00000000000004b7 RSI: ffffc9000576a000 RDI: ffff8801f9d9802a
RBP: ffffc90000e53b70 R08: 0000000000000184 R09: ffff8801f9d98011
R10: ffffc90000e53c98 R11: 000000006c756e28 R12: ffffffff82e68f8e
R13: ffffffff82e68f8e R14: ffff8801f9d9802a R15: ffffffffffffffff
FS:  00007f9fb3c3a700(0000) GS:ffff88021fc00000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000000020ebe000 CR3: 00000001f99e2001 CR4: 00000000001606f0
DR0: 0000000020001010 DR1: 0000000020000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000600
Call Trace:
 vsnprintf+0x400/0x760 lib/vsprintf.c:2281
 seq_vprintf+0x5d/0x90 fs/seq_file.c:397
 seq_printf+0x53/0x60 fs/seq_file.c:412
 show_timer+0xa4/0xd0 fs/proc/base.c:2303
 traverse+0xa4/0x290 fs/seq_file.c:111
 seq_read+0x1a7/0x520 fs/seq_file.c:189
 do_loop_readv_writev fs/read_write.c:673 [inline]
 do_iter_read+0x1c3/0x210 fs/read_write.c:897
 vfs_readv+0x87/0xc0 fs/read_write.c:959
 do_preadv+0xc5/0x110 fs/read_write.c:1043
 SYSC_preadv fs/read_write.c:1093 [inline]
 SyS_preadv+0x30/0x40 fs/read_write.c:1088
 entry_SYSCALL_64_fastpath+0x1f/0x96
RIP: 0033:0x452a09
RSP: 002b:00007f9fb3c39c58 EFLAGS: 00000212 ORIG_RAX: 0000000000000127
RAX: ffffffffffffffda RBX: 00007f9fb3c39950 RCX: 0000000000452a09
RDX: 0000000000000001 RSI: 00000000205e2ff0 RDI: 0000000000000014
RBP: 00007f9fb3c39940 R08: 0000000000000000 R09: 0000000000000000
R10: 0001000000000000 R11: 0000000000000212 R12: 00000000004b7366
R13: 00007f9fb3c39ac8 R14: 00000000004b7371 R15: 0000000000000000
Code: e9 cf fe 49 8d 47 ff 48 81 fb ff 0f 00 00 48 89 45 c8 0f 86 97 00 00 00 e8 3b e9 cf fe 4d 85 ff 0f 84 a9 00 00 00 e8 2d e9 cf fe <44> 0f b6 2b 4c 8d 63 01 45 84 ed 0f 84 93 00 00 00 48 8b 45 c8 
RIP: string+0x53/0x100 lib/vsprintf.c:594 RSP: ffffc90000e53b30
---[ end trace f1438421a9fedcd8 ]---