kasan: GPF could be caused by NULL-ptr deref or user memory access
general protection fault: 0000 [#1] PREEMPT SMP KASAN
kobject: 'loop4' (00000000972a1451): kobject_uevent_env
CPU: 0 PID: 32220 Comm: syz-executor5 Not tainted 4.20.0-rc3+ #122
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
kobject: 'loop4' (00000000972a1451): fill_kobj_path: path = '/devices/virtual/block/loop4'
RIP: 0010:kvm_pv_send_ipi+0x364/0xdd0 arch/x86/kvm/lapic.c:579
Code: 45 84 ed 0f 84 da 07 00 00 e8 e8 51 66 00 48 8d 4b 14 48 b8 00 00 00 00 00 fc ff df 48 89 ca 48 89 8d 70 fe ff ff 48 c1 ea 03 <0f> b6 14 02 48 89 c8 83 e0 07 83 c0 03 38 d0 7c 08 84 d2 0f 85 f5
RSP: 0018:ffff888180db6ed8 EFLAGS: 00010203
RAX: dffffc0000000000 RBX: 0000000000000000 RCX: 0000000000000014
RDX: 0000000000000002 RSI: ffffffff81193908 RDI: 0000000000000005
RBP: ffff888180db7078 R08: ffff8881cb75e280 R09: ffffed103b5e5b67
kobject: 'loop2' (00000000310b87ba): kobject_uevent_env
R10: ffffed103b5e5b67 R11: ffff8881daf2db3b R12: ffff888180db7050
R13: 0000000000000001 R14: 0000000000000000 R15: ffff888180db6fd0
FS:  00007f1b4c3a3700(0000) GS:ffff8881dae00000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007fac9f53bdb8 CR3: 00000001c12c6000 CR4: 00000000001426f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
kobject: 'loop2' (00000000310b87ba): fill_kobj_path: path = '/devices/virtual/block/loop2'
Call Trace:
kobject: 'kvm' (0000000029411d50): kobject_uevent_env
kobject: 'loop2' (00000000310b87ba): kobject_uevent_env
kobject: 'loop2' (00000000310b87ba): fill_kobj_path: path = '/devices/virtual/block/loop2'
 kvm_emulate_hypercall+0xa1a/0xf20 arch/x86/kvm/x86.c:6999
kobject: 'kvm' (0000000029411d50): fill_kobj_path: path = '/devices/virtual/misc/kvm'
kobject: 'kvm' (0000000029411d50): kobject_uevent_env
 handle_vmcall+0x15/0x20 arch/x86/kvm/vmx.c:7510
kobject: 'kvm' (0000000029411d50): fill_kobj_path: path = '/devices/virtual/misc/kvm'
 vmx_handle_exit+0x33d/0x4630 arch/x86/kvm/vmx.c:10600
kobject: 'kvm' (0000000029411d50): kobject_uevent_env
kobject: 'loop2' (00000000310b87ba): kobject_uevent_env
kobject: 'loop2' (00000000310b87ba): fill_kobj_path: path = '/devices/virtual/block/loop2'
kobject: 'kvm' (0000000029411d50): fill_kobj_path: path = '/devices/virtual/misc/kvm'
kobject: 'loop2' (00000000310b87ba): kobject_uevent_env
 vcpu_enter_guest arch/x86/kvm/x86.c:7809 [inline]
 vcpu_run arch/x86/kvm/x86.c:7872 [inline]
 kvm_arch_vcpu_ioctl_run+0x3ded/0x72a0 arch/x86/kvm/x86.c:8072
kobject: 'loop2' (00000000310b87ba): fill_kobj_path: path = '/devices/virtual/block/loop2'
kobject: 'kvm' (0000000029411d50): kobject_uevent_env
 kvm_vcpu_ioctl+0x5c8/0x1150 arch/x86/kvm/../../../virt/kvm/kvm_main.c:2596
kobject: 'kvm' (0000000029411d50): fill_kobj_path: path = '/devices/virtual/misc/kvm'
kobject: 'loop2' (00000000310b87ba): kobject_uevent_env
kobject: 'loop2' (00000000310b87ba): fill_kobj_path: path = '/devices/virtual/block/loop2'
kobject: 'loop3' (000000002cb1aa39): kobject_uevent_env
kobject: 'loop3' (000000002cb1aa39): fill_kobj_path: path = '/devices/virtual/block/loop3'
kobject: 'loop0' (00000000a7f97a7b): kobject_uevent_env
 vfs_ioctl fs/ioctl.c:46 [inline]
 file_ioctl fs/ioctl.c:509 [inline]
 do_vfs_ioctl+0x1de/0x1790 fs/ioctl.c:696
kobject: 'loop0' (00000000a7f97a7b): fill_kobj_path: path = '/devices/virtual/block/loop0'
kobject: 'kvm' (0000000029411d50): kobject_uevent_env
kobject: 'kvm' (0000000029411d50): fill_kobj_path: path = '/devices/virtual/misc/kvm'
 ksys_ioctl+0xa9/0xd0 fs/ioctl.c:713
 __do_sys_ioctl fs/ioctl.c:720 [inline]
 __se_sys_ioctl fs/ioctl.c:718 [inline]
 __x64_sys_ioctl+0x73/0xb0 fs/ioctl.c:718
 do_syscall_64+0x1b9/0x820 arch/x86/entry/common.c:290
 entry_SYSCALL_64_after_hwframe+0x49/0xbe
RIP: 0033:0x457569
Code: fd b3 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 cb b3 fb ff c3 66 2e 0f 1f 84 00 00 00 00
RSP: 002b:00007f1b4c3a2c78 EFLAGS: 00000246 ORIG_RAX: 0000000000000010
RAX: ffffffffffffffda RBX: 0000000000000003 RCX: 0000000000457569
RDX: 0000000000000000 RSI: 000000000000ae80 RDI: 0000000000000005
RBP: 000000000072bf00 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 00007f1b4c3a36d4
R13: 00000000004c034e R14: 00000000004d0d60 R15: 00000000ffffffff
Modules linked in:
---[ end trace ce070043bd1b09e2 ]---
kobject: 'kvm' (0000000029411d50): kobject_uevent_env
kobject: 'kvm' (0000000029411d50): kobject_uevent_env
kobject: 'kvm' (0000000029411d50): fill_kobj_path: path = '/devices/virtual/misc/kvm'
RIP: 0010:kvm_pv_send_ipi+0x364/0xdd0 arch/x86/kvm/lapic.c:579
kobject: 'kvm' (0000000029411d50): fill_kobj_path: path = '/devices/virtual/misc/kvm'
kobject: 'kvm' (0000000029411d50): kobject_uevent_env
kobject: 'kvm' (0000000029411d50): kobject_uevent_env
kobject: 'kvm' (0000000029411d50): fill_kobj_path: path = '/devices/virtual/misc/kvm'
kobject: 'kvm' (0000000029411d50): fill_kobj_path: path = '/devices/virtual/misc/kvm'
Code: 45 84 ed 0f 84 da 07 00 00 e8 e8 51 66 00 48 8d 4b 14 48 b8 00 00 00 00 00 fc ff df 48 89 ca 48 89 8d 70 fe ff ff 48 c1 ea 03 <0f> b6 14 02 48 89 c8 83 e0 07 83 c0 03 38 d0 7c 08 84 d2 0f 85 f5
kobject: 'kvm' (0000000029411d50): kobject_uevent_env
RSP: 0018:ffff888180db6ed8 EFLAGS: 00010203
kobject: 'kvm' (0000000029411d50): fill_kobj_path: path = '/devices/virtual/misc/kvm'
RAX: dffffc0000000000 RBX: 0000000000000000 RCX: 0000000000000014
RDX: 0000000000000002 RSI: ffffffff81193908 RDI: 0000000000000005
kobject: 'kvm' (0000000029411d50): kobject_uevent_env
RBP: ffff888180db7078 R08: ffff8881cb75e280 R09: ffffed103b5e5b67
R10: ffffed103b5e5b67 R11: ffff8881daf2db3b R12: ffff888180db7050
R13: 0000000000000001 R14: 0000000000000000 R15: ffff888180db6fd0
FS:  00007f1b4c3a3700(0000) GS:ffff8881dae00000(0000) knlGS:0000000000000000
kobject: 'loop4' (00000000972a1451): kobject_uevent_env
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007ff8f7921db8 CR3: 00000001c12c6000 CR4: 00000000001426f0
kobject: 'kvm' (0000000029411d50): fill_kobj_path: path = '/devices/virtual/misc/kvm'
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400