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: 8968 Comm: syz-executor3 Not tainted 4.15.0-rc4-mm1+ #47
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
RIP: 0010:__fire_sched_in_preempt_notifiers kernel/sched/core.c:2534 [inline]
RIP: 0010:fire_sched_in_preempt_notifiers kernel/sched/core.c:2540 [inline]
RIP: 0010:finish_task_switch+0x42d/0x740 kernel/sched/core.c:2670
RSP: 0018:ffff8801c705f258 EFLAGS: 00010a06
RAX: dffffc0000000000 RBX: ffff8801db22c900 RCX: 1bd5a00000000022
RDX: 0000000000009899 RSI: ffffc90003425000 RDI: dead000000000110
RBP: ffff8801c705f308 R08: 1ffff1003a2e7c2b R09: 0000000000000000
R10: ffff8801c705f230 R11: 0000000000000000 R12: ffff8801c6a06440
R13: 1ffff10038e0be50 R14: dffffc0000000000 R15: dead000000000100
FS:  00007f037965e700(0000) GS:ffff8801db200000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000001b9bc25000 CR3: 00000001cacbf004 CR4: 00000000001626f0
DR0: 0000000020000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000600
Call Trace:
 context_switch kernel/sched/core.c:2803 [inline]
 __schedule+0x8f3/0x2060 kernel/sched/core.c:3376
 schedule+0xf5/0x430 kernel/sched/core.c:3435
 freezable_schedule include/linux/freezer.h:172 [inline]
 futex_wait_queue_me+0x3ed/0x7e0 kernel/futex.c:2476
 futex_wait+0x34b/0x9a0 kernel/futex.c:2591
 do_futex+0x11ec/0x22a0 kernel/futex.c:3473
 SYSC_futex kernel/futex.c:3533 [inline]
 SyS_futex+0x260/0x390 kernel/futex.c:3501
 entry_SYSCALL_64_fastpath+0x1f/0x96
RIP: 0033:0x452a09
RSP: 002b:00007f037965dce8 EFLAGS: 00000246 ORIG_RAX: 00000000000000ca
RAX: ffffffffffffffda RBX: 00007f037965c810 RCX: 0000000000452a09
RDX: 0000000000000000 RSI: 0000000000000000 RDI: 000000000071bec8
RBP: 0000000000000000 R08: 000000000000059d R09: 000000000071bea0
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000018
R13: 000000002096f000 R14: 00007f037965e6d4 R15: 0000000000000000
Code: ff 11 4c 89 f9 48 c1 e9 03 42 80 3c 31 00 0f 85 1b 02 00 00 4d 8b 3f 4d 85 ff 0f 84 c0 fd ff ff 49 8d 7f 10 48 89 f9 48 c1 e9 03 <42> 80 3c 31 00 74 ae e8 17 d1 5b 00 eb a7 4c 89 fe 4c 89 e7 e8 
RIP: __fire_sched_in_preempt_notifiers kernel/sched/core.c:2534 [inline] RSP: ffff8801c705f258
RIP: fire_sched_in_preempt_notifiers kernel/sched/core.c:2540 [inline] RSP: ffff8801c705f258
RIP: finish_task_switch+0x42d/0x740 kernel/sched/core.c:2670 RSP: ffff8801c705f258
---[ end trace 69e4498ac193dcec ]---
Kernel panic - not syncing: Fatal exception
Dumping ftrace buffer:
   (ftrace buffer empty)
Kernel Offset: disabled
Rebooting in 86400 seconds..