BUG: unable to handle kernel paging request in lock_timer

Kernel	Title	Repro	Cause bisect	Fix bisect	Count	Last	Reported	Patched	Status
linux-4.14	general protection fault in lock_timer_base (3)				2	1148d	1165d	0/1	auto-closed as invalid on 2021/06/30 20:28
device syz0 left promiscuous mode
sock: process `syz-executor4' is using obsolete setsockopt SO_BSDCOMPAT
BUG: unable to handle kernel paging request at 0000000100017814
IP: get_timer_cpu_base kernel/time/timer.c:823 [inline]
IP: get_timer_base kernel/time/timer.c:851 [inline]
IP: lock_timer_base+0x61/0xc0 kernel/time/timer.c:931
PGD 1f85a0067 P4D 1f85a0067 PUD 0 
Oops: 0000 [#1] SMP
Dumping ftrace buffer:
   (ftrace buffer empty)
Modules linked in:
CPU: 0 PID: 1441 Comm: syz-executor0 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:get_timer_cpu_base kernel/time/timer.c:823 [inline]
RIP: 0010:get_timer_base kernel/time/timer.c:851 [inline]
RIP: 0010:lock_timer_base+0x61/0xc0 kernel/time/timer.c:931
RSP: 0018:ffffc90000f7ba10 EFLAGS: 00010002
RAX: 0000000000030da8 RBX: 00000001000177bf RCX: ffffffff81258a84
RDX: ffffffff82f65b20 RSI: ffffc9000551e000 RDI: ffff880213b30d88
RBP: ffffc90000f7ba38 R08: 0000000000000001 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000000 R12: ffff880213b30d88
R13: 0000000013b30da8 R14: 00000000ffffffff R15: ffffc90000f7ba48
FS:  00007f6c1d5a3700(0000) GS:ffff88021fc00000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000000100017814 CR3: 00000001f9b20003 CR4: 00000000001606f0
DR0: 0000000020000000 DR1: 0000000020000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000600
Call Trace:
 del_timer+0x30/0x70 kernel/time/timer.c:1195
 try_to_grab_pending+0x150/0x250 kernel/workqueue.c:1224
 __cancel_work+0x2d/0x130 kernel/workqueue.c:3009
 cancel_delayed_work+0x1a/0x20 kernel/workqueue.c:3046
 addrconf_del_dad_work+0x19/0x40 net/ipv6/addrconf.c:320
 addrconf_ifdown+0x4b8/0x780 net/ipv6/addrconf.c:3678
 addrconf_notify+0x86/0xd50 net/ipv6/addrconf.c:3514
 notifier_call_chain+0x41/0xc0 kernel/notifier.c:93
 __raw_notifier_call_chain kernel/notifier.c:394 [inline]
 raw_notifier_call_chain+0x2d/0x40 kernel/notifier.c:401
 call_netdevice_notifiers_info+0x32/0x60 net/core/dev.c:1679
 call_netdevice_notifiers net/core/dev.c:1697 [inline]
 __dev_notify_flags+0xcd/0x130 net/core/dev.c:6876
 dev_change_flags+0x5e/0x70 net/core/dev.c:6910
 dev_ifsioc+0x3c2/0x520 net/core/dev_ioctl.c:257
 dev_ioctl+0x15d/0x7a0 net/core/dev_ioctl.c:566
 sock_do_ioctl+0x59/0x60 net/socket.c:971
 sock_ioctl+0x211/0x320 net/socket.c:1061
 vfs_ioctl fs/ioctl.c:46 [inline]
 do_vfs_ioctl+0xaf/0x840 fs/ioctl.c:686
 SYSC_ioctl fs/ioctl.c:701 [inline]
 SyS_ioctl+0x8f/0xc0 fs/ioctl.c:692
 entry_SYSCALL_64_fastpath+0x1f/0x96
RIP: 0033:0x452a09
RSP: 002b:00007f6c1d5a2c58 EFLAGS: 00000212 ORIG_RAX: 0000000000000010
RAX: ffffffffffffffda RBX: 000000000071bea0 RCX: 0000000000452a09
RDX: 0000000020172fe0 RSI: 0000000000008914 RDI: 0000000000000014
RBP: 0000000000000574 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000212 R12: 00000000006f5380
R13: 00000000ffffffff R14: 00007f6c1d5a36d4 R15: 0000000000000000
Code: 41 f7 c5 00 00 04 00 75 e6 e8 bc 18 06 00 44 89 e8 48 c7 c2 20 5b f6 82 48 c7 c3 c0 77 01 00 25 ff ff 03 00 4c 8b 34 c2 4c 01 f3 <80> 7b 55 00 74 1d e8 94 18 06 00 41 f7 c5 00 00 08 00 74 0f 48 
RIP: get_timer_cpu_base kernel/time/timer.c:823 [inline] RSP: ffffc90000f7ba10
RIP: get_timer_base kernel/time/timer.c:851 [inline] RSP: ffffc90000f7ba10
RIP: lock_timer_base+0x61/0xc0 kernel/time/timer.c:931 RSP: ffffc90000f7ba10
CR2: 0000000100017814
---[ end trace 1e6b5aef6a5cff00 ]---