BUG: unable to handle kernel paging request at fffffbfff4a6863c
IP: show_timer+0x1c7/0x2b0 fs/proc/base.c:2274
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: 8956 Comm: syz-executor6 Not tainted 4.15.0-rc2+ #213
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
RIP: 0010:show_timer+0x1c7/0x2b0 fs/proc/base.c:2274
RSP: 0018:ffff8801c4c379e0 EFLAGS: 00010806
RAX: dffffc0000000000 RBX: ffff8801bf8a4420 RCX: ffffffff81cd11fe
RDX: 1ffffffff4a6863c RSI: ffffc90003045000 RDI: ffffffffa53431e0
RBP: ffff8801c4c37a10 R08: ffffed0038ca140d R09: ffffed0038ca140d
R10: ffff8801cdf380c0 R11: ffffed0038ca140c R12: 0000000004000000
R13: ffff8801d3154e80 R14: ffffffff853422a0 R15: 000000000000022c
FS:  00007f4a30120700(0000) GS:ffff8801db400000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: fffffbfff4a6863c CR3: 00000001bfedf000 CR4: 00000000001406f0
DR0: 0000000020000000 DR1: 0000000020000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000600
Call Trace:
 traverse+0x248/0xa00 fs/seq_file.c:111
 seq_read+0x96a/0x13d0 fs/seq_file.c:189
 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: 0033:0x452a39
RSP: 002b:00007f4a3011fc58 EFLAGS: 00000212 ORIG_RAX: 0000000000000127
RAX: ffffffffffffffda RBX: 00007f4a3011f950 RCX: 0000000000452a39
RDX: 0000000000000001 RSI: 00000000205e2ff0 RDI: 0000000000000013
RBP: 00007f4a3011f940 R08: 0000000000000000 R09: 0000000000000000
R10: 0001000000000000 R11: 0000000000000212 R12: 00000000004b73a6
R13: 00007f4a3011fac8 R14: 00000000004b73b1 R15: 0000000000000000
Code: 89 c7 4c 0f 44 f1 41 83 e4 fb 4d 63 e4 e8 12 26 a3 ff 4a 8d 3c e5 e0 31 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 e0 31 34 85 4c 89 ef 
RIP: show_timer+0x1c7/0x2b0 fs/proc/base.c:2274 RSP: ffff8801c4c379e0
CR2: fffffbfff4a6863c
---[ end trace 66716e90c9ee17f8 ]---