device syz7 left promiscuous mode
device syz7 entered promiscuous mode
==================================================================
BUG: KASAN: use-after-free in tick_sched_handle+0x149/0x160 kernel/time/tick-sched.c:152
kasan: CONFIG_KASAN_INLINE enabled
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: 0 PID: 1331 Comm: kworker/0:2 Not tainted 4.13.0-rc5-next-20170816+ #4
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
task: ffff8801d2a4c500 task.stack: ffff8801d29b0000
RIP: 0010:__switch_to+0x8f2/0x1310 arch/x86/kernel/process_64.c:520
RSP: 0018:ffff8801d29b76a0 EFLAGS: 00010092
RAX: ffff8801cde761c0 RBX: ffff8801d8734644 RCX: 0000000000000000
RDX: 1ffff10039bcec38 RSI: 0000000000000001 RDI: ffffed003a536ec8
RBP: ffff8801d8734648 R08: 0000000000000001 R09: 1ffff10033fe5efb
R10: 0000001650af8d63 R11: 0000000000000000 R12: ffff8801c8e9a240
R13: ffff8801c5bfd440 R14: 0000000000000000 R15: ffff8801d2a4c500
FS:  0000000000000000(0000) GS:ffff8801db200000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000000000000130 CR3: 000000019fe90000 CR4: 00000000001426f0
Call Trace:
Code: c7 41 24 00 00 00 00 48 83 e7 f8 48 29 f9 83 c1 2c c1 e9 03 f3 48 ab 48 81 c4 98 01 00 00 4c 89 e0 5b 41 5c 41 5d 41 5e 41 5f 5d <c3> e9 33 05 00 00 b8 2b 00 00 00 8e e0 41 8e e7 e9 74 fb ff ff 
RIP: __switch_to+0x8f2/0x1310 arch/x86/kernel/process_64.c:520 RSP: ffff8801d29b76a0
---[ end trace ce6b4ee8aca4852a ]---
Kernel panic - not syncing: Fatal exception
Read of size 8 at addr ffff8801d2959a00 by task syz-executor1/14182

CPU: 1 PID: 14182 Comm: syz-executor1 Tainted: G      D         4.13.0-rc5-next-20170816+ #4
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
Call Trace:
 <IRQ>
 __dump_stack lib/dump_stack.c:16 [inline]
 dump_stack+0x194/0x257 lib/dump_stack.c:52
 print_address_description+0x73/0x250 mm/kasan/report.c:252
 kasan_report_error mm/kasan/report.c:351 [inline]
 kasan_report+0x24e/0x340 mm/kasan/report.c:409
 __asan_report_load8_noabort+0x14/0x20 mm/kasan/report.c:430
 tick_sched_handle+0x149/0x160 kernel/time/tick-sched.c:152
 tick_sched_timer+0x42/0x120 kernel/time/tick-sched.c:1190
 __run_hrtimer kernel/time/hrtimer.c:1213 [inline]
 __hrtimer_run_queues+0x349/0xe10 kernel/time/hrtimer.c:1277
 hrtimer_interrupt+0x1c2/0x5e0 kernel/time/hrtimer.c:1311
 local_apic_timer_interrupt+0x6b/0xa0 arch/x86/kernel/apic/apic.c:1019
 smp_apic_timer_interrupt+0x71/0xa0 arch/x86/kernel/apic/apic.c:1043
 apic_timer_interrupt+0x9d/0xb0 arch/x86/entry/entry_64.S:783
 </IRQ>

The buggy address belongs to the page:
page:ffffea00074a5640 count:0 mapcount:0 mapping:          (null) index:0x0
flags: 0x200000000000000()
raw: 0200000000000000 0000000000000000 0000000000000000 00000000ffffffff
raw: dead000000000100 dead000000000200 0000000000000000 0000000000000000
page dumped because: kasan: bad access detected

Memory state around the buggy address:
 ffff8801d2959900: ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff
 ffff8801d2959980: ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff
>ffff8801d2959a00: ff ff ff ff ff ff ff ff ff f1 f1 f1 f1 f8 f2 f2
                   ^
 ffff8801d2959a80: f2 f2 f2 f2 f2 00 f2 f2 f2 f2 f2 f2 f2 00 f2 f2
 ffff8801d2959b00: f2 f3 f3 f3 f3 00 00 00 00 00 00 00 00 00 00 00
==================================================================
Shutting down cpus with NMI
Dumping ftrace buffer:
   (ftrace buffer empty)
Kernel Offset: disabled
Rebooting in 86400 seconds..