WARNING: CPU: 3 PID: 23104 at kernel/kthread.c:87 free_kthread_struct+0xa2/0xe0 kernel/kthread.c:87
Kernel panic - not syncing: panic_on_warn set ...

CPU: 3 PID: 23104 Comm: modprobe Not tainted 4.14.0-rc7-next-20171103+ #10
Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS Bochs 01/01/2011
Call Trace:
 <IRQ>
 __dump_stack lib/dump_stack.c:17 [inline]
 dump_stack+0x194/0x257 lib/dump_stack.c:53
 panic+0x1e4/0x41c kernel/panic.c:183
 __warn+0x1c4/0x1e0 kernel/panic.c:546
 report_bug+0x211/0x2d0 lib/bug.c:184
 fixup_bug+0x40/0x90 arch/x86/kernel/traps.c:177
 do_trap_no_signal arch/x86/kernel/traps.c:211 [inline]
 do_trap+0x260/0x390 arch/x86/kernel/traps.c:260
 do_error_trap+0x120/0x390 arch/x86/kernel/traps.c:297
 do_invalid_op+0x1b/0x20 arch/x86/kernel/traps.c:310
 invalid_op+0x18/0x20 arch/x86/entry/entry_64.S:906
RIP: 0010:free_kthread_struct+0xa2/0xe0 kernel/kthread.c:87
RSP: 0018:ffff88006df07768 EFLAGS: 00010206
RAX: ffff88006d236080 RBX: ffff88006ab3b7c0 RCX: ffffffff814937d2
RDX: 0000000000000100 RSI: 0000000000000000 RDI: ffff88006ab3b948
RBP: ffff88006df07770 R08: ffffffff85f3b680 R09: 1ffff1000dbe0ed4
R10: ffff88006d236080 R11: 0000000000000002 R12: 1ffff1000dbe0ef0
R13: 1ffff1000dbe0ef4 R14: 0000000000000000 R15: ffff88006df077e0
 free_task+0x134/0x1a0 kernel/fork.c:390
 __put_task_struct+0x229/0x3b0 kernel/fork.c:663
 put_task_struct include/linux/sched/task.h:96 [inline]
 delayed_put_task_struct+0xca/0x3d0 kernel/exit.c:180
 __rcu_reclaim kernel/rcu/rcu.h:172 [inline]
 rcu_do_batch kernel/rcu/tree.c:2676 [inline]
 invoke_rcu_callbacks kernel/rcu/tree.c:2935 [inline]
 __rcu_process_callbacks kernel/rcu/tree.c:2902 [inline]
 rcu_process_callbacks+0xd74/0x17d0 kernel/rcu/tree.c:2919
 __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:1052
 apic_timer_interrupt+0x9d/0xb0 arch/x86/entry/entry_64.S:578
 </IRQ>
RIP: 0010:in_irqentry_text mm/kasan/kasan.c:417 [inline]
RIP: 0010:filter_irq_stacks mm/kasan/kasan.c:430 [inline]
RIP: 0010:save_stack+0x72/0xd0 mm/kasan/kasan.c:448
RSP: 0018:ffff88006a74f6c0 EFLAGS: 00000287 ORIG_RAX: ffffffffffffff11
RAX: 000000000000000a RBX: 00000000014000c0 RCX: 000000000000000d
RDX: ffffffff81268f46 RSI: ffff88006a74f6d8 RDI: ffffffff8508a340
RBP: ffff88006a74f8e0 R08: ffffffff85f3b680 R09: 1ffff1000d4e9e8f
R10: ffff88006d236080 R11: 0000000000000001 R12: ffff880068756630
R13: 00000000014000c0 R14: ffff880068756630 R15: ffff88006d831c40
 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
 kmem_cache_alloc+0x12e/0x760 mm/slab.c:3549
 __split_vma+0x1b7/0x8c0 mm/mmap.c:2547
 do_munmap+0xb54/0xdf0 mm/mmap.c:2670
 mmap_region+0x59e/0x15a0 mm/mmap.c:1631
 do_mmap+0x6a1/0xd50 mm/mmap.c:1468
 do_mmap_pgoff include/linux/mm.h:2200 [inline]
 vm_mmap_pgoff+0x1de/0x280 mm/util.c:333
 SYSC_mmap_pgoff mm/mmap.c:1518 [inline]
 SyS_mmap_pgoff+0x462/0x5f0 mm/mmap.c:1476
 SYSC_mmap arch/x86/kernel/sys_x86_64.c:100 [inline]
 SyS_mmap+0x16/0x20 arch/x86/kernel/sys_x86_64.c:91
 entry_SYSCALL_64_fastpath+0x1f/0xbe
RIP: 0033:0x7ff1cb11d3ea
RSP: 002b:00007ffc593c4c88 EFLAGS: 00000206 ORIG_RAX: 0000000000000009
RAX: ffffffffffffffda RBX: 00007ff1cb3259a8 RCX: 00007ff1cb11d3ea
RDX: 0000000000000003 RSI: 0000000000005000 RDI: 00007ff1caee7000
RBP: 0000000000000086 R08: 0000000000000000 R09: 0000000000183000
R10: 0000000000000812 R11: 0000000000000206 R12: 00007ffc593c50f8
R13: 000000006fffff48 R14: 00007ffc593c4df0 R15: 00007ffc593c4d90
Dumping ftrace buffer:
   (ftrace buffer empty)
Kernel Offset: disabled
Rebooting in 86400 seconds..