------------[ cut here ]------------
WARNING: CPU: 0 PID: 3435 at kernel/kthread.c:87 free_kthread_struct+0xa2/0xe0 kernel/kthread.c:87
Kernel panic - not syncing: panic_on_warn set ...

CPU: 0 PID: 3435 Comm: modprobe Not tainted 4.14.0-rc2-next-20170929+ #32
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
 panic+0x1e4/0x41c kernel/panic.c:181
 __warn+0x1c4/0x1e0 kernel/panic.c:542
 report_bug+0x211/0x2d0 lib/bug.c:183
 fixup_bug+0x40/0x90 arch/x86/kernel/traps.c:178
 do_trap_no_signal arch/x86/kernel/traps.c:212 [inline]
 do_trap+0x260/0x390 arch/x86/kernel/traps.c:261
 do_error_trap+0x120/0x390 arch/x86/kernel/traps.c:298
 do_invalid_op+0x1b/0x20 arch/x86/kernel/traps.c:311
 invalid_op+0x18/0x20 arch/x86/entry/entry_64.S:905
RIP: 0010:free_kthread_struct+0xa2/0xe0 kernel/kthread.c:87
RSP: 0018:ffff8801db207768 EFLAGS: 00010206
RAX: ffff8801c704a140 RBX: ffff8801c7331a40 RCX: 1ffff1003b640ee1
RDX: 0000000000000100 RSI: 0000000000000000 RDI: ffff8801c7331bc8
RBP: ffff8801db207770 R08: ffffffff85b3c5c0 R09: 1ffff1003b640ed4
R10: ffff8801c704a140 R11: 0000000000000002 R12: 1ffff1003b640ef0
R13: 1ffff1003b640ef4 R14: 0000000000000000 R15: ffff8801db2077e0
 free_task+0x134/0x1a0 kernel/fork.c:386
 __put_task_struct+0x229/0x3b0 kernel/fork.c:667
 put_task_struct include/linux/sched/task.h:95 [inline]
 delayed_put_task_struct+0xca/0x3d0 kernel/exit.c:180
 __rcu_reclaim kernel/rcu/rcu.h:195 [inline]
 rcu_do_batch kernel/rcu/tree.c:2758 [inline]
 invoke_rcu_callbacks kernel/rcu/tree.c:3012 [inline]
 __rcu_process_callbacks kernel/rcu/tree.c:2979 [inline]
 rcu_process_callbacks+0xd74/0x17d0 kernel/rcu/tree.c:2996
 __do_softirq+0x29d/0xbb2 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:540 [inline]
 smp_apic_timer_interrupt+0x16b/0x700 arch/x86/kernel/apic/apic.c:1041
 apic_timer_interrupt+0x9d/0xb0 arch/x86/entry/entry_64.S:770
 </IRQ>
RIP: 0010:arch_local_irq_restore arch/x86/include/asm/paravirt.h:777 [inline]
RIP: 0010:lock_acquire+0x256/0x580 kernel/locking/lockdep.c:4005
RSP: 0018:ffff8801c91ff800 EFLAGS: 00000286 ORIG_RAX: ffffffffffffff11
RAX: dffffc0000000000 RBX: ffff8801c704a140 RCX: 0000000000000000
RDX: 1ffffffff0b5970d RSI: 0000000047f11325 RDI: 0000000000000286
RBP: ffff8801c91ff8f8 R08: 0000000000000000 R09: 0000000000000001
R10: 0000000000000000 R11: ffffffff87069c20 R12: 1ffff1003923ff06
R13: 0000000000000000 R14: 0000000000000002 R15: 0000000000000000
 rcu_lock_acquire include/linux/rcupdate.h:244 [inline]
 rcu_read_lock include/linux/rcupdate.h:631 [inline]
 __is_insn_slot_addr+0xb4/0x330 kernel/kprobes.c:293
 is_kprobe_optinsn_slot include/linux/kprobes.h:344 [inline]
 kernel_text_address+0x11b/0x140 kernel/extable.c:148
 __kernel_text_address+0xd/0x40 kernel/extable.c:105
 unwind_get_return_address+0x61/0xa0 arch/x86/kernel/unwind_frame.c:18
 __save_stack_trace+0x7e/0xd0 arch/x86/kernel/stacktrace.c:45
 save_stack_trace+0x16/0x20 arch/x86/kernel/stacktrace.c:59
 save_stack+0x43/0xd0 mm/kasan/kasan.c:447
 set_track mm/kasan/kasan.c:459 [inline]
 kasan_kmalloc+0xad/0xe0 mm/kasan/kasan.c:551
 kasan_slab_alloc+0x12/0x20 mm/kasan/kasan.c:489
 slab_post_alloc_hook mm/slab.h:448 [inline]
 slab_alloc mm/slab.c:3398 [inline]
 kmem_cache_alloc+0x11b/0x760 mm/slab.c:3560
 getname_flags+0xcb/0x580 fs/namei.c:137
 user_path_at_empty+0x2d/0x50 fs/namei.c:2598
 user_path_at include/linux/namei.h:56 [inline]
 SYSC_faccessat fs/open.c:384 [inline]
 SyS_faccessat fs/open.c:353 [inline]
 SYSC_access fs/open.c:431 [inline]
 SyS_access+0x22c/0x6a0 fs/open.c:429
 entry_SYSCALL_64_fastpath+0x1f/0xbe
RIP: 0033:0x7f0f46aa0267
RSP: 002b:00007ffd8c904938 EFLAGS: 00000246 ORIG_RAX: 0000000000000015
RAX: ffffffffffffffda RBX: 00007f0f46cab1c8 RCX: 00007f0f46aa0267
RDX: 00007f0f46a8a158 RSI: 0000000000000004 RDI: 00007f0f46aa6e30
RBP: 0000000000000086 R08: 00007f0f46cab770 R09: 0000000000000050
R10: ffffffffffffffb0 R11: 0000000000000246 R12: 0000000000000000
R13: 0000000000000002 R14: 00007f0f46cabbc8 R15: 000000000000000f
Dumping ftrace buffer:
   (ftrace buffer empty)
Kernel Offset: disabled
Rebooting in 86400 seconds..