RBP: 000000000072bf00 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 00000000ffffffff
R13: 00000000004cfc28 R14: 00000000004bfd60 R15: 0000000000000000
kasan: CONFIG_KASAN_INLINE enabled
kasan: GPF could be caused by NULL-ptr deref or user memory access
general protection fault: 0000 [#1] PREEMPT SMP KASAN
CPU: 0 PID: 23803 Comm: syz-executor0 Not tainted 4.19.0-rc4-next-20180920+ #76
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:2486 [inline]
RIP: 0010:fire_sched_in_preempt_notifiers kernel/sched/core.c:2492 [inline]
RIP: 0010:finish_task_switch+0x3a4/0x900 kernel/sched/core.c:2684
Code: 3d 04 00 00 4d 8b bc 24 50 03 00 00 4d 85 ff 0f 84 ab fe ff ff 49 bc 00 00 00 00 00 fc ff df 49 8d 7f 10 48 89 f9 48 c1 e9 03 <42> 80 3c 21 00 0f 85 da 03 00 00 49 8b 4f 10 48 89 ce 48 c1 ee 03
RSP: 0018:ffff88019142ef28 EFLAGS: 00010a06
RAX: 0000000000000000 RBX: ffff8801dac2cc40 RCX: 1bd5a00000000022
RDX: 0000000000040000 RSI: ffffffff810f018e RDI: dead000000000110
RBP: ffff88019142f010 R08: ffff8801cab66080 R09: ffffed003986ac5c
R10: ffffed003986ac5c R11: ffff8801cc3562e7 R12: dffffc0000000000
R13: ffff88018d512400 R14: 0000000000000000 R15: dead000000000100
FS:  00007fa15c026700(0000) GS:ffff8801dac00000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f82e4d3f000 CR3: 00000001bbecd000 CR4: 00000000001426f0
Call Trace:
 context_switch kernel/sched/core.c:2833 [inline]
 __schedule+0x874/0x1ed0 kernel/sched/core.c:3479
 preempt_schedule_common+0x1f/0xd0 kernel/sched/core.c:3603
 preempt_schedule+0x4d/0x60 kernel/sched/core.c:3629
 ___preempt_schedule+0x16/0x18
 rcu_read_unlock_sched include/linux/rcupdate.h:738 [inline]
 percpu_ref_tryget_live+0x255/0x460 include/linux/percpu-refcount.h:260
 css_tryget_online include/linux/cgroup.h:354 [inline]
 get_mem_cgroup_from_mm+0x3f7/0x4a0 mm/memcontrol.c:848
 get_mem_cgroup_from_current mm/memcontrol.c:890 [inline]
 memcg_kmem_get_cache+0x1fc/0x9d0 mm/memcontrol.c:2537
 slab_pre_alloc_hook mm/slab.h:428 [inline]
 slab_alloc mm/slab.c:3378 [inline]
 kmem_cache_alloc+0x193/0x730 mm/slab.c:3552
 alloc_inode+0xb2/0x190 fs/inode.c:212
 new_inode_pseudo+0x71/0x1a0 fs/inode.c:903
 new_inode+0x1c/0x40 fs/inode.c:932
 debugfs_get_inode+0x19/0x120 fs/debugfs/inode.c:37
 __debugfs_create_file+0xb5/0x400 fs/debugfs/inode.c:354
 debugfs_create_file+0x57/0x70 fs/debugfs/inode.c:401
 kvm_create_vm_debugfs arch/x86/kvm/../../../virt/kvm/kvm_main.c:619 [inline]
 kvm_dev_ioctl_create_vm arch/x86/kvm/../../../virt/kvm/kvm_main.c:3213 [inline]
 kvm_dev_ioctl+0xc0a/0x1ae0 arch/x86/kvm/../../../virt/kvm/kvm_main.c:3240
 vfs_ioctl fs/ioctl.c:46 [inline]
 file_ioctl fs/ioctl.c:501 [inline]
 do_vfs_ioctl+0x1de/0x1720 fs/ioctl.c:685
 ksys_ioctl+0xa9/0xd0 fs/ioctl.c:702
 __do_sys_ioctl fs/ioctl.c:709 [inline]
 __se_sys_ioctl fs/ioctl.c:707 [inline]
 __x64_sys_ioctl+0x73/0xb0 fs/ioctl.c:707
 do_syscall_64+0x1b9/0x820 arch/x86/entry/common.c:290
 entry_SYSCALL_64_after_hwframe+0x49/0xbe
RIP: 0033:0x457679
Code: 1d b4 fb ff c3 66 2e 0f 1f 84 00 00 00 00 00 66 90 48 89 f8 48 89 f7 48 89 d6 48 89 ca 4d 89 c2 4d 89 c8 4c 8b 4c 24 08 0f 05 <48> 3d 01 f0 ff ff 0f 83 eb b3 fb ff c3 66 2e 0f 1f 84 00 00 00 00
RSP: 002b:00007fa15c025c78 EFLAGS: 00000246 ORIG_RAX: 0000000000000010
RAX: ffffffffffffffda RBX: 00007fa15c0266d4 RCX: 0000000000457679
RDX: 0000000000000000 RSI: 000000000000ae01 RDI: 0000000000000006
RBP: 000000000072bf00 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 00000000ffffffff
R13: 00000000004cfc28 R14: 00000000004bfd60 R15: 0000000000000000
Modules linked in:
---[ end trace 7c0988472d87c9b2 ]---
kobject: 'loop4' (000000001164934b): kobject_uevent_env
RIP: 0010:__fire_sched_in_preempt_notifiers kernel/sched/core.c:2486 [inline]
RIP: 0010:fire_sched_in_preempt_notifiers kernel/sched/core.c:2492 [inline]
RIP: 0010:finish_task_switch+0x3a4/0x900 kernel/sched/core.c:2684
kobject: 'loop4' (000000001164934b): fill_kobj_path: path = '/devices/virtual/block/loop4'
Code: 3d 04 00 00 4d 8b bc 24 50 03 00 00 4d 85 ff 0f 84 ab fe ff ff 49 bc 00 00 00 00 00 fc ff df 49 8d 7f 10 48 89 f9 48 c1 e9 03 <42> 80 3c 21 00 0f 85 da 03 00 00 49 8b 4f 10 48 89 ce 48 c1 ee 03
RSP: 0018:ffff88019142ef28 EFLAGS: 00010a06
RAX: 0000000000000000 RBX: ffff8801dac2cc40 RCX: 1bd5a00000000022
RDX: 0000000000040000 RSI: ffffffff810f018e RDI: dead000000000110
RBP: ffff88019142f010 R08: ffff8801cab66080 R09: ffffed003986ac5c
R10: ffffed003986ac5c R11: ffff8801cc3562e7 R12: dffffc0000000000
R13: ffff88018d512400 R14: 0000000000000000 R15: dead000000000100
FS:  00007fa15c026700(0000) GS:ffff8801dac00000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f82e4d3f000 CR3: 00000001bbecd000 CR4: 00000000001426f0