kasan: GPF could be caused by NULL-ptr deref or user memory access general protection fault: 0000 [#1] PREEMPT SMP KASAN CPU: 1 PID: 30853 Comm: syz-executor3 Not tainted 4.20.0-rc1+ #331 kobject: 'loop4' (0000000091d2a0dd): kobject_uevent_env Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 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 78 55 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' (00000000f6ab84ff): kobject_uevent_env RSP: 0018:ffff8801c1ca6ed8 EFLAGS: 00010203 RAX: dffffc0000000000 RBX: 0000000000000000 RCX: 0000000000000014 RDX: 0000000000000002 RSI: ffffffff811935a8 RDI: 0000000000000005 RBP: ffff8801c1ca7078 R08: ffff8801b40e4000 R09: ffffed003b5e5b67 R10: ffffed003b5e5b67 R11: ffff8801daf2db3b R12: ffff8801c1ca7050 R13: 0000000000000001 R14: 0000000000000000 R15: ffff8801c1ca6fd0 FS: 00007f8a15f57700(0000) GS:ffff8801daf00000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007f8a15ed2db8 CR3: 00000001d1018000 CR4: 00000000001426e0 kobject: 'loop4' (0000000091d2a0dd): fill_kobj_path: path = '/devices/virtual/block/loop4' DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: kobject: 'kvm' (00000000f6ab84ff): kobject_uevent_env kobject: 'loop2' (00000000f931ad58): kobject_uevent_env kobject: 'kvm' (00000000f6ab84ff): fill_kobj_path: path = '/devices/virtual/misc/kvm' kvm_emulate_hypercall+0xa1a/0xf20 arch/x86/kvm/x86.c:6999 kobject: 'kvm' (00000000f6ab84ff): fill_kobj_path: path = '/devices/virtual/misc/kvm' kobject: 'loop2' (00000000f931ad58): fill_kobj_path: path = '/devices/virtual/block/loop2' handle_vmcall+0x15/0x20 arch/x86/kvm/vmx.c:7510 kobject: 'kvm' (00000000f6ab84ff): kobject_uevent_env vmx_handle_exit+0x33d/0x4630 arch/x86/kvm/vmx.c:10600 kobject: 'kvm' (00000000f6ab84ff): kobject_uevent_env kobject: 'kvm' (00000000f6ab84ff): kobject_uevent_env kobject: 'kvm' (00000000f6ab84ff): fill_kobj_path: path = '/devices/virtual/misc/kvm' kobject: 'kvm' (00000000f6ab84ff): kobject_uevent_env kobject: 'kvm' (00000000f6ab84ff): fill_kobj_path: path = '/devices/virtual/misc/kvm' 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: 'kvm' (00000000f6ab84ff): fill_kobj_path: path = '/devices/virtual/misc/kvm' kobject: 'kvm' (00000000f6ab84ff): fill_kobj_path: path = '/devices/virtual/misc/kvm' kobject: 'kvm' (00000000f6ab84ff): kobject_uevent_env kobject: 'kvm' (00000000f6ab84ff): kobject_uevent_env kobject: 'kvm' (00000000f6ab84ff): fill_kobj_path: path = '/devices/virtual/misc/kvm' kvm_vcpu_ioctl+0x5c8/0x1150 arch/x86/kvm/../../../virt/kvm/kvm_main.c:2596 kobject: 'kvm' (00000000f6ab84ff): fill_kobj_path: path = '/devices/virtual/misc/kvm' kobject: 'kvm' (00000000f6ab84ff): fill_kobj_path: path = '/devices/virtual/misc/kvm' kobject: 'kvm' (00000000f6ab84ff): kobject_uevent_env kobject: 'loop0' (00000000682f2e14): kobject_uevent_env kobject: 'kvm' (00000000f6ab84ff): fill_kobj_path: path = '/devices/virtual/misc/kvm' kobject: 'loop0' (00000000682f2e14): fill_kobj_path: path = '/devices/virtual/block/loop0' kobject: 'loop5' (00000000a388f252): kobject_uevent_env kobject: 'loop5' (00000000a388f252): fill_kobj_path: path = '/devices/virtual/block/loop5' vfs_ioctl fs/ioctl.c:46 [inline] file_ioctl fs/ioctl.c:509 [inline] do_vfs_ioctl+0x1de/0x1790 fs/ioctl.c:696 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:00007f8a15f56c78 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: 00007f8a15f576d4 R13: 00000000004c028e R14: 00000000004d06d8 R15: 00000000ffffffff Modules linked in: kobject: 'kvm' (00000000f6ab84ff): kobject_uevent_env ---[ end trace b150dd38b7f666dc ]--- RIP: 0010:kvm_pv_send_ipi+0x364/0xdd0 arch/x86/kvm/lapic.c:579 kobject: 'kvm' (00000000f6ab84ff): fill_kobj_path: path = '/devices/virtual/misc/kvm' Code: 45 84 ed 0f 84 da 07 00 00 e8 78 55 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:ffff8801c1ca6ed8 EFLAGS: 00010203 RAX: dffffc0000000000 RBX: 0000000000000000 RCX: 0000000000000014 RDX: 0000000000000002 RSI: ffffffff811935a8 RDI: 0000000000000005 RBP: ffff8801c1ca7078 R08: ffff8801b40e4000 R09: ffffed003b5e5b67 R10: ffffed003b5e5b67 R11: ffff8801daf2db3b R12: ffff8801c1ca7050 R13: 0000000000000001 R14: 0000000000000000 R15: ffff8801c1ca6fd0 FS: 00007f8a15f57700(0000) GS:ffff8801daf00000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 0000000000625208 CR3: 00000001d1018000 CR4: 00000000001426e0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400