BUG: unable to handle kernel paging request at fffffbfff1a6863c
IP: show_timer+0x1c7/0x2b0 fs/proc/base.c:2274
device gre0 entered promiscuous mode
PGD 21ffd3067 P4D 21ffd3067 PUD 21ffd2067 PMD 0 
device gre0 entered promiscuous mode
Oops: 0000 [#1] SMP KASAN
Dumping ftrace buffer:
   (ftrace buffer empty)
Modules linked in:
CPU: 0 PID: 1667 Comm: syz-executor4 Not tainted 4.15.0-rc2+ #212
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:ffff8801d56079e0 EFLAGS: 00010806
RAX: dffffc0000000000 RBX: ffff8801c1d31340 RCX: ffffffff81cd11fe
RDX: 1ffffffff1a6863c RSI: ffffc900037ca000 RDI: ffffffff8d3431e0
RBP: ffff8801d5607a10 R08: ffffed003a01959d R09: ffffed003a01959d
R10: ffff8801d43c02c0 R11: ffffed003a01959c R12: 0000000001000000
R13: ffff8801cf079980 R14: ffffffff853422a0 R15: 0000000000000c7d
FS:  00007f25786a9700(0000) GS:ffff8801db400000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: fffffbfff1a6863c CR3: 00000001d422a000 CR4: 00000000001406f0
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:00007f25786a8c58 EFLAGS: 00000212 ORIG_RAX: 0000000000000127
RAX: ffffffffffffffda RBX: 0000000000758020 RCX: 0000000000452a39
RDX: 0000000000000001 RSI: 00000000205e2ff0 RDI: 0000000000000013
RBP: 00000000000005f1 R08: 0000000000000000 R09: 0000000000000000
R10: 0001000000000000 R11: 0000000000000212 R12: 00000000006f5f38
R13: 00000000ffffffff R14: 00007f25786a96d4 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: ffff8801d56079e0
CR2: fffffbfff1a6863c
---[ end trace ea6ad01c0a37dc6f ]---