kasan: GPF could be caused by NULL-ptr deref or user memory access
general protection fault: 0000 [#1] SMP KASAN
Dumping ftrace buffer:
   (ftrace buffer empty)
Modules linked in:
CPU: 3 PID: 3095 Comm: syz-executor2 Not tainted 4.14.0-rc1-next-20170918+ #6
Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS Bochs 01/01/2011
task: ffff8800680f8640 task.stack: ffff880068258000
RIP: 0010:__hlist_del include/linux/list.h:650 [inline]
RIP: 0010:detach_timer kernel/time/timer.c:791 [inline]
RIP: 0010:expire_timers kernel/time/timer.c:1309 [inline]
RIP: 0010:__run_timers+0x619/0xb90 kernel/time/timer.c:1620
RSP: 0018:ffff88006df07968 EFLAGS: 00010806
RAX: 1bd5a00000000041 RBX: ffff88004b5bbf80 RCX: 1ffff1000dbe0f76
RDX: ffff88006df07bb0 RSI: 0000000000000008 RDI: dead000000000208
RBP: ffff88006df07c58 R08: ffff88006df072b8 R09: ffff88006df072b0
R10: ffff88006df07228 R11: 1ffff1000d01f35b R12: ffff88004b5bbf88
R13: dffffc0000000000 R14: dead000000000200 R15: ffff88006df07c30
FS:  00000000028cc940(0000) GS:ffff88006df00000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f21b97be1e1 CR3: 000000006c802000 CR4: 00000000000006e0
Call Trace:
 <IRQ>
 run_timer_softirq+0x4c/0xb0 kernel/time/timer.c:1646
 __do_softirq+0x2bb/0xbd0 kernel/softirq.c:284
 invoke_softirq kernel/softirq.c:364 [inline]
 irq_exit+0x1d3/0x210 kernel/softirq.c:405
 exiting_irq arch/x86/include/asm/apic.h:638 [inline]
 smp_apic_timer_interrupt+0x177/0x710 arch/x86/kernel/apic/apic.c:1048
 apic_timer_interrupt+0x9d/0xb0 arch/x86/entry/entry_64.S:577
 </IRQ>
RIP: 0010:hrtimer_active+0x314/0x410 kernel/time/hrtimer.c:1137
RSP: 0018:ffff88006825f960 EFLAGS: 00000297 ORIG_RAX: ffffffffffffff10
RAX: 1ffff1000d04bf33 RBX: 0000000000000000 RCX: 0000000000000000
RDX: dffffc0000000000 RSI: 00000000ffffffff RDI: ffff88006df1d530
RBP: ffff88006825faa0 R08: ffff88006df25c18 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000000 R12: ffff88006df1d4c0
R13: 00000000000c0028 R14: ffffed000d04bf37 R15: dffffc0000000000
 hrtimer_try_to_cancel+0x91/0x5c0 kernel/time/hrtimer.c:1006
 hrtimer_cancel kernel/time/hrtimer.c:1032 [inline]
 do_nanosleep+0x330/0x6f0 kernel/time/hrtimer.c:1475
 hrtimer_nanosleep+0x2b2/0x860 kernel/time/hrtimer.c:1527
 SYSC_nanosleep kernel/time/hrtimer.c:1559 [inline]
 SyS_nanosleep+0x175/0x1f0 kernel/time/hrtimer.c:1546
 entry_SYSCALL_64_fastpath+0x1f/0xbe
RIP: 0033:0x471290
RSP: 002b:0000000000a5f9d8 EFLAGS: 00000246 ORIG_RAX: 0000000000000023
RAX: ffffffffffffffda RBX: 0000000000016e1b RCX: 0000000000471290
RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000a5f9e0
RBP: 0000000000000082 R08: 0000000000000001 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 00000000000006ac
R13: 0000000000000000 R14: 0000000000000013 R15: 0000000000016dcc
Code: 4d 85 f6 4c 89 32 48 89 95 58 fd ff ff 42 c6 04 28 f8 74 26 e8 a9 33 10 00 49 8d 7e 08 48 8b 95 58 fd ff ff 48 89 f8 48 c1 e8 03 <42> 80 3c 28 00 0f 85 b5 04 00 00 49 89 56 08 e8 83 33 10 00 4c 
RIP: __hlist_del include/linux/list.h:650 [inline] RSP: ffff88006df07968
RIP: detach_timer kernel/time/timer.c:791 [inline] RSP: ffff88006df07968
RIP: expire_timers kernel/time/timer.c:1309 [inline] RSP: ffff88006df07968
RIP: __run_timers+0x619/0xb90 kernel/time/timer.c:1620 RSP: ffff88006df07968
---[ end trace e7cb02c82cfa9904 ]---