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: 1 PID: 9022 Comm: syz-executor6 Not tainted 4.13.0-rc7-next-20170901+ #13
Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS Bochs 01/01/2011
task: ffff880038286300 task.stack: ffff8800383e8000
RIP: 0010:__write_once_size include/linux/compiler.h:305 [inline]
RIP: 0010:__hlist_del include/linux/list.h:648 [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+0x5df/0xb90 kernel/time/timer.c:1620
RSP: 0000:ffff88003ed07968 EFLAGS: 00010046
RAX: ffff88003ed07af0 RBX: ffff88001df3bd40 RCX: 0000000000000000
RDX: 0000000000000000 RSI: ffffffff85b380e0 RDI: 0000000000000082
RBP: ffff88003ed07c58 R08: ffff88003ed072b8 R09: ffff88003ed072b0
R10: ffff88003ed07228 R11: 1ffff10007050ef3 R12: ffff88001df3bd48
R13: dffffc0000000000 R14: dead000000000200 R15: ffff88003ed07c30
FS:  0000000001cbd940(0000) GS:ffff88003ed00000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000000020fa5ff8 CR3: 0000000039c64000 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: 0033:0x406a4d
RSP: 002b:0000000000a5f8a0 EFLAGS: 00000202 ORIG_RAX: ffffffffffffff10
RAX: 0000000000000000 RBX: 00000000007080b0 RCX: 0000000000000e76
RDX: 0000000082449bb6 RSI: 00000000ab494bef RDI: 0000000082a23a79
RBP: 0000000000000006 R08: 0000000000001a79 R09: 0000003d0000001e
R10: 0000000000a5f960 R11: 0000000000000206 R12: 0000000000000057
R13: 0000000000000092 R14: 0000000000000000 R15: 00000000c605b19a
Code: 0f 85 e9 04 00 00 49 8d 87 c0 fe ff ff 48 8b 53 08 48 89 c1 48 c1 e9 03 42 c6 04 29 00 48 89 d1 4d 89 b7 c0 fe ff ff 48 c1 e9 03 <42> 80 3c 29 00 0f 85 c6 04 00 00 48 c1 e8 03 4d 85 f6 4c 89 32 
RIP: __write_once_size include/linux/compiler.h:305 [inline] RSP: ffff88003ed07968
RIP: __hlist_del include/linux/list.h:648 [inline] RSP: ffff88003ed07968
RIP: detach_timer kernel/time/timer.c:791 [inline] RSP: ffff88003ed07968
RIP: expire_timers kernel/time/timer.c:1309 [inline] RSP: ffff88003ed07968
RIP: __run_timers+0x5df/0xb90 kernel/time/timer.c:1620 RSP: ffff88003ed07968
---[ end trace 229701ce04002478 ]---
Kernel panic - not syncing: Fatal exception in interrupt
Dumping ftrace buffer:
   (ftrace buffer empty)
Kernel Offset: disabled
Rebooting in 86400 seconds..