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: 1 PID: 4539 Comm: syz-executor1 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:ffff8801d4e0f208 EFLAGS: 00010a06
RAX: dffffc0000000000 RBX: ffff8801db32c900 RCX: 1bd5a00000000022
RDX: 0000000000005a90 RSI: ffffc9000258c000 RDI: dead000000000110
RBP: ffff8801d4e0f2b8 R08: 1ffff1003a785b2b R09: 0000000000000000
R10: ffff8801d4e0f1e0 R11: 0000000000000000 R12: ffff8801d2d4e3c0
R13: 1ffff1003a9c1e46 R14: dffffc0000000000 R15: dead000000000100
FS:  00007efcd14dd700(0000) GS:ffff8801db300000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000000020a7101a CR3: 00000001d4e4f006 CR4: 00000000001626e0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
 context_switch kernel/sched/core.c:2803 [inline]
 __schedule+0x8f3/0x2060 kernel/sched/core.c:3376
 preempt_schedule_common+0x22/0x60 kernel/sched/core.c:3515
 _cond_resched+0x1d/0x30 kernel/sched/core.c:4852
 slab_pre_alloc_hook mm/slab.h:420 [inline]
 slab_alloc_node mm/slab.c:3286 [inline]
 kmem_cache_alloc_node_trace+0x264/0x750 mm/slab.c:3648
 __do_kmalloc_node mm/slab.c:3668 [inline]
 __kmalloc_node+0x33/0x70 mm/slab.c:3676
 kmalloc_node include/linux/slab.h:558 [inline]
 kvmalloc_node+0x64/0xd0 mm/util.c:397
 kvmalloc include/linux/mm.h:541 [inline]
 kvzalloc include/linux/mm.h:549 [inline]
 __kvm_set_memory_region+0x2117/0x24d0 arch/x86/kvm/../../../virt/kvm/kvm_main.c:999
 kvm_set_memory_region+0x2e/0x50 arch/x86/kvm/../../../virt/kvm/kvm_main.c:1061
 kvm_vm_ioctl_set_memory_region arch/x86/kvm/../../../virt/kvm/kvm_main.c:1073 [inline]
 kvm_vm_ioctl+0x1111/0x1c60 arch/x86/kvm/../../../virt/kvm/kvm_main.c:2954
 vfs_ioctl fs/ioctl.c:46 [inline]
 do_vfs_ioctl+0x1b1/0x1520 fs/ioctl.c:686
 SYSC_ioctl fs/ioctl.c:701 [inline]
 SyS_ioctl+0x8f/0xc0 fs/ioctl.c:692
 entry_SYSCALL_64_fastpath+0x1f/0x96
RIP: 0033:0x452897
RSP: 002b:00007efcd14db078 EFLAGS: 00000206 ORIG_RAX: 0000000000000010
RAX: ffffffffffffffda RBX: 000000000000000e RCX: 0000000000452897
RDX: 00007efcd14db4f0 RSI: 000000004020ae46 RDI: 0000000000000019
RBP: 0000000020a7e000 R08: 00007efcd14db080 R09: 000000000000059d
R10: 0000000000000019 R11: 0000000000000206 R12: 00000000fec00000
R13: 0000000000000019 R14: 00007efcd14dd6d4 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: ffff8801d4e0f208
RIP: fire_sched_in_preempt_notifiers kernel/sched/core.c:2540 [inline] RSP: ffff8801d4e0f208
RIP: finish_task_switch+0x42d/0x740 kernel/sched/core.c:2670 RSP: ffff8801d4e0f208
---[ end trace e3db37d110fd6964 ]---