RBP: 000000000072bf00 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 00000000ffffffff
R13: 00000000004cfe90 R14: 00000000004bfd7b 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: 26468 Comm: syz-executor5 Not tainted 4.19.0-rc4-next-20180921+ #77
kobject: 'loop4' (000000004b899069): kobject_uevent_env
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:ffff880185547270 EFLAGS: 00010a06
RAX: 0000000000000000 RBX: ffff8801dac2cc40 RCX: 1bd5a00000000022
kobject: 'loop4' (000000004b899069): fill_kobj_path: path = '/devices/virtual/block/loop4'
RDX: 0000000000040000 RSI: ffffffff810f018e RDI: dead000000000110
RBP: ffff880185547358 R08: ffff8801c4410140 R09: 0000000000000006
R10: 0000000000000000 R11: ffff8801c4410140 R12: dffffc0000000000
R13: ffff880189b94400 R14: 0000000000000000 R15: dead000000000100
FS:  00007f9b43e43700(0000) GS:ffff8801dac00000(0000) knlGS:0000000000000000
kobject: 'loop3' (000000002e622721): kobject_uevent_env
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
kobject: 'loop3' (000000002e622721): fill_kobj_path: path = '/devices/virtual/block/loop3'
CR2: 00007ffce2a02e48 CR3: 0000000194a79000 CR4: 00000000001426f0
DR0: 0000000020000000 DR1: 0000000020000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000ffff0ff0 DR7: 0000000000000600
Call Trace:
kobject: 'loop0' (0000000022b3421a): kobject_uevent_env
kobject: 'loop0' (0000000022b3421a): fill_kobj_path: path = '/devices/virtual/block/loop0'
 context_switch kernel/sched/core.c:2833 [inline]
 __schedule+0x874/0x1ed0 kernel/sched/core.c:3479
kobject: 'loop1' (00000000ece496e2): kobject_uevent_env
kobject: 'loop1' (00000000ece496e2): fill_kobj_path: path = '/devices/virtual/block/loop1'
kobject: 'loop4' (000000004b899069): kobject_uevent_env
kobject: 'loop4' (000000004b899069): fill_kobj_path: path = '/devices/virtual/block/loop4'
 preempt_schedule_irq+0x87/0x110 kernel/sched/core.c:3706
 retint_kernel+0x1b/0x2d
kobject: 'loop1' (00000000ece496e2): kobject_uevent_env
RIP: 0010:arch_local_irq_restore arch/x86/include/asm/paravirt.h:761 [inline]
RIP: 0010:slab_alloc mm/slab.c:3385 [inline]
RIP: 0010:kmem_cache_alloc+0x297/0x730 mm/slab.c:3552
Code: 7e 0f 85 cf fe ff ff e8 46 0d 40 ff e9 c5 fe ff ff e8 1d f7 c2 ff 48 83 3d d5 b3 b1 07 00 0f 84 3b 03 00 00 48 8b 7d d0 57 9d <0f> 1f 44 00 00 e9 54 fe ff ff 31 d2 be a5 01 00 00 48 c7 c7 d2 f7
RSP: 0018:ffff880185547638 EFLAGS: 00000282
kobject: 'loop1' (00000000ece496e2): fill_kobj_path: path = '/devices/virtual/block/loop1'
 ORIG_RAX: ffffffffffffff13
RAX: 0000000000000000 RBX: 00000000006000c0 RCX: 1ffff1003888213c
RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000282
RBP: ffff8801855476a0 R08: ffff8801c44109e0 R09: 0000000000000006
R10: 0000000000000000 R11: ffff8801c4410140 R12: ffff880176f729d0
R13: ffff8801d90531c0 R14: ffff8801da989b00 R15: 00000000006000c0
kobject: 'loop0' (0000000022b3421a): kobject_uevent_env
 alloc_inode+0xb2/0x190 fs/inode.c:212
 new_inode_pseudo+0x71/0x1a0 fs/inode.c:903
kobject: 'loop0' (0000000022b3421a): fill_kobj_path: path = '/devices/virtual/block/loop0'
 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:00007f9b43e42c78 EFLAGS: 00000246 ORIG_RAX: 0000000000000010
RAX: ffffffffffffffda RBX: 00007f9b43e436d4 RCX: 0000000000457679
RDX: 0000000000000000 RSI: 000000000000ae01 RDI: 0000000000000006
RBP: 000000000072bf00 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 00000000ffffffff
R13: 00000000004cfe90 R14: 00000000004bfd7b R15: 0000000000000000
Modules linked in:
---[ end trace 3eb795a7e974441d ]---
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:ffff880185547270 EFLAGS: 00010a06
RAX: 0000000000000000 RBX: ffff8801dac2cc40 RCX: 1bd5a00000000022
RDX: 0000000000040000 RSI: ffffffff810f018e RDI: dead000000000110
RBP: ffff880185547358 R08: ffff8801c4410140 R09: 0000000000000006
R10: 0000000000000000 R11: ffff8801c4410140 R12: dffffc0000000000
R13: ffff880189b94400 R14: 0000000000000000 R15: dead000000000100
FS:  00007f9b43e43700(0000) GS:ffff8801dac00000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007ffce2a02e48 CR3: 0000000194a79000 CR4: 00000000001426f0
DR0: 0000000020000000 DR1: 0000000020000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000ffff0ff0 DR7: 0000000000000600