BUG: unable to handle kernel paging request at fffffbfff8a68575
IP: show_timer+0x1c7/0x2b0 fs/proc/base.c:2304
PGD 21ffd3067 P4D 21ffd3067 PUD 21ffd2067 PMD 0 
Oops: 0000 [#1] SMP KASAN
Dumping ftrace buffer:
   (ftrace buffer empty)
Modules linked in:
CPU: 0 PID: 11081 Comm: syz-executor3 Not tainted 4.15.0-rc1-mm1+ #27
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
task: ffff8801c0e90300 task.stack: ffff8801d8980000
RIP: 0010:show_timer+0x1c7/0x2b0 fs/proc/base.c:2304
RSP: 0018:ffff8801d8987ac8 EFLAGS: 00010802
RAX: dffffc0000000000 RBX: ffff8801911a2460 RCX: ffffffff81cd16ee
RDX: 1ffffffff8a68575 RSI: ffffc900029da000 RDI: ffffffffc5342ba8
RBP: ffff8801d8987af8 R08: ffffed003b2918b5 R09: ffffed003b2918b5
R10: ffff8801c0e90300 R11: ffffed003b2918b4 R12: 0000000008000001
R13: ffff8801c1a65a80 R14: ffffffff85341ca0 R15: 00000000000002f4
FS:  00007f6d8f587700(0000) GS:ffff8801db400000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: fffffbfff8a68575 CR3: 00000001cd35e000 CR4: 00000000001426f0
DR0: 0000000020001008 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000600
Call Trace:
 seq_read+0x385/0x13d0 fs/seq_file.c:234
 do_loop_readv_writev fs/read_write.c:673 [inline]
 do_iter_read+0x3db/0x5b0 fs/read_write.c:897
 vfs_readv+0x121/0x1c0 fs/read_write.c:959
 do_preadv+0x11b/0x1a0 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: 0033:0x4529d9
RSP: 002b:00007f6d8f586c58 EFLAGS: 00000212 ORIG_RAX: 0000000000000127
RAX: ffffffffffffffda RBX: 0000000000758020 RCX: 00000000004529d9
RDX: 0000000000000001 RSI: 0000000020b39000 RDI: 0000000000000013
RBP: 0000000000000398 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000212 R12: 00000000006f26e0
R13: 00000000ffffffff R14: 00007f6d8f5876d4 R15: 0000000000000000
Code: 89 c7 4c 0f 44 f1 41 83 e4 fb 4d 63 e4 e8 72 f6 a2 ff 4a 8d 3c e5 a0 2b 34 85 48 b8 00 00 00 00 00 fc ff df 48 89 fa 48 c1 ea 03 <80> 3c 02 00 0f 85 a2 00 00 00 4a 8b 14 e5 a0 2b 34 85 4c 89 ef 
RIP: show_timer+0x1c7/0x2b0 fs/proc/base.c:2304 RSP: ffff8801d8987ac8
CR2: fffffbfff8a68575
---[ end trace 49dc830fa3992549 ]---