------------[ cut here ]------------ kernel BUG at arch/x86/kvm/x86.c:357! overlayfs: filesystem on './file0' not supported as upperdir invalid opcode: 0000 [#1] PREEMPT SMP KASAN CPU: 0 PID: 16448 Comm: syz-executor2 Not tainted 4.20.0+ #2 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 RIP: 0010:kvm_spurious_fault+0x9/0x10 arch/x86/kvm/x86.c:357 Code: e8 3c a6 75 00 41 bd 03 00 00 00 5b 44 89 e8 41 5c 41 5d 5d c3 66 90 66 2e 0f 1f 84 00 00 00 00 00 55 48 89 e5 e8 17 a6 75 00 <0f> 0b 0f 1f 44 00 00 55 48 89 e5 41 57 41 56 49 89 d6 41 55 41 54 RSP: 0018:ffff88804d41f198 EFLAGS: 00010212 RAX: 0000000000040000 RBX: 1ffff11009a83e3a RCX: ffffc90008124000 kobject: 'loop1' (000000002d5bc794): kobject_uevent_env RDX: 0000000000002ac9 RSI: ffffffff810bdb99 RDI: 0000000000000005 RBP: ffff88804d41f198 R08: ffff88809f4cc6c0 R09: ffffed1014c7969a R10: ffffed1014c79699 R11: ffff8880a63cb4cf R12: ffff88804d41f2c8 R13: ffff88804d0bc000 R14: 0000000000000175 R15: ffff88804d41f230 FS: 00007f7457a91700(0000) GS:ffff8880ae600000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 0000000000940004 CR3: 0000000096d75000 CR4: 00000000001426f0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 kobject: 'loop1' (000000002d5bc794): fill_kobj_path: path = '/devices/virtual/block/loop1' DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: __vmcs_writel arch/x86/kvm/vmx/ops.h:117 [inline] vmcs_writel arch/x86/kvm/vmx/ops.h:160 [inline] vmx_set_msr+0x1763/0x2350 arch/x86/kvm/vmx/vmx.c:1827 kobject: 'loop1' (000000002d5bc794): kobject_uevent_env kobject: 'loop1' (000000002d5bc794): fill_kobj_path: path = '/devices/virtual/block/loop1' kvm_set_msr+0x190/0x380 arch/x86/kvm/x86.c:1334 do_set_msr+0x10e/0x180 arch/x86/kvm/x86.c:1363 __msr_io arch/x86/kvm/x86.c:2917 [inline] msr_io+0x226/0x390 arch/x86/kvm/x86.c:2953 kvm_arch_vcpu_ioctl+0x137c/0x3ba0 arch/x86/kvm/x86.c:3970 kvm_vcpu_ioctl+0x9d5/0x12d0 arch/x86/kvm/../../../virt/kvm/kvm_main.c:2826 vfs_ioctl fs/ioctl.c:46 [inline] file_ioctl fs/ioctl.c:509 [inline] do_vfs_ioctl+0x107b/0x17d0 fs/ioctl.c:696 ksys_ioctl+0xab/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+0x1a3/0x800 arch/x86/entry/common.c:290 entry_SYSCALL_64_after_hwframe+0x49/0xbe RIP: 0033:0x457d37 Code: 48 83 c4 08 48 89 d8 5b 5d c3 66 0f 1f 84 00 00 00 00 00 48 89 e8 48 f7 d8 48 39 c3 0f 92 c0 eb 92 66 90 b8 10 00 00 00 0f 05 <48> 3d 01 f0 ff ff 0f 83 cd b8 fb ff c3 66 2e 0f 1f 84 00 00 00 00 RSP: 002b:00007f7457a8f028 EFLAGS: 00000206 ORIG_RAX: 0000000000000010 RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 0000000000457d37 RDX: 00007f7457a8f030 RSI: 000000004008ae89 RDI: 0000000000000005 RBP: 00000000000001ff R08: 0000000000000090 R09: 0000000000000005 R10: 00000000000000b3 R11: 0000000000000206 R12: 0000000000000000 R13: 0000000020020000 R14: 00000000004db2c0 R15: 00000000ffffffff Modules linked in: ------------[ cut here ]------------ kernel BUG at arch/x86/kvm/x86.c:357! invalid opcode: 0000 [#2] PREEMPT SMP KASAN CPU: 0 PID: 9 Comm: ksoftirqd/0 Tainted: G D 4.20.0+ #2 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 RIP: 0010:kvm_spurious_fault+0x9/0x10 arch/x86/kvm/x86.c:357 Code: e8 3c a6 75 00 41 bd 03 00 00 00 5b 44 89 e8 41 5c 41 5d 5d c3 66 90 66 2e 0f 1f 84 00 00 00 00 00 55 48 89 e5 e8 17 a6 75 00 <0f> 0b 0f 1f 44 00 00 55 48 89 e5 41 57 41 56 49 89 d6 41 55 41 54 RSP: 0018:ffff8880ae607c78 EFLAGS: 00010006 RAX: ffff8880a9464240 RBX: ffff88804d0bf810 RCX: ffffffff8139c3ba RDX: 0000000000010100 RSI: ffffffff810bdb99 RDI: 0000000000000007 RBP: ffff8880ae607c78 R08: ffff8880a9464240 R09: ffffed1015cc5ba9 R10: ffffed1015cc5ba8 R11: ffff8880ae62dd47 R12: 1ffff11015cc0f94 R13: ffff8880ae607cc0 R14: ffff8880ae607d20 R15: ffff88805951f000 FS: 0000000000000000(0000) GS:ffff8880ae600000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: ffff8880ae607cc0 CR3: 00000000a78ad000 CR4: 00000000001426f0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: vmcs_clear arch/x86/kvm/vmx/ops.h:185 [inline] loaded_vmcs_init+0xcb/0x320 arch/x86/kvm/vmx/vmx.c:565 __loaded_vmcs_clear+0x2c1/0x520 arch/x86/kvm/vmx/vmx.c:632 flush_smp_call_function_queue+0x1bb/0x640 kernel/smp.c:243 generic_smp_call_function_single_interrupt+0x13/0x2b kernel/smp.c:192 smp_call_function_single_interrupt+0x117/0x640 arch/x86/kernel/smp.c:296 call_function_single_interrupt+0xf/0x20 arch/x86/entry/entry_64.S:829 RIP: 0010:br_nf_hook_thresh+0x22c/0x580 net/bridge/br_netfilter_hooks.c:1000 Code: 00 0f 85 b2 02 00 00 48 8b 03 48 8d 78 20 48 89 fa 48 c1 ea 03 42 0f b6 14 32 84 d2 74 09 80 fa 03 0f 8e 9f 02 00 00 8b 70 20 <31> ff 89 b5 10 ff ff ff e8 27 0f 8b fa 8b b5 10 ff ff ff 85 f6 7e RSP: 0018:ffff8880a9476df0 EFLAGS: 00000246 ORIG_RAX: ffffffffffffff04 RAX: ffffffff88eb4f90 RBX: ffff8880a8293a28 RCX: ffffffff86f6738d RDX: 0000000000000000 RSI: 00000000fffffed4 RDI: ffffffff88eb4fb0 RBP: ffff8880a9476f28 R08: ffff8880a9464240 R09: 0000000000000000 R10: 0000000000000000 R11: ffff88809cbbfd97 R12: 0000000000000000 R13: 0000000000000002 R14: dffffc0000000000 R15: ffff8880a9476f00 br_nf_pre_routing_finish_ipv6+0x7d9/0xf60 net/bridge/br_netfilter_ipv6.c:209 NF_HOOK include/linux/netfilter.h:289 [inline] br_nf_pre_routing_ipv6+0x3d3/0x950 net/bridge/br_netfilter_ipv6.c:237 br_nf_pre_routing+0xed1/0x1620 net/bridge/br_netfilter_hooks.c:482 nf_hook_entry_hookfn include/linux/netfilter.h:119 [inline] nf_hook_slow+0xbf/0x1f0 net/netfilter/core.c:511 nf_hook include/linux/netfilter.h:244 [inline] NF_HOOK include/linux/netfilter.h:287 [inline] br_handle_frame+0xbc7/0x19e0 net/bridge/br_input.c:305 __netif_receive_skb_core+0xd87/0x3750 net/core/dev.c:4902 __netif_receive_skb_one_core+0xcd/0x210 net/core/dev.c:4971 __netif_receive_skb+0x2c/0x1c0 net/core/dev.c:5083 process_backlog+0x206/0x750 net/core/dev.c:5923 napi_poll net/core/dev.c:6346 [inline] net_rx_action+0x76d/0x1930 net/core/dev.c:6412 __do_softirq+0x30b/0xb11 kernel/softirq.c:292 run_ksoftirqd kernel/softirq.c:654 [inline] run_ksoftirqd+0x8e/0x110 kernel/softirq.c:646 smpboot_thread_fn+0x6ab/0xa10 kernel/smpboot.c:164 kthread+0x357/0x430 kernel/kthread.c:246 ret_from_fork+0x3a/0x50 arch/x86/entry/entry_64.S:352 Modules linked in: ---[ end trace ff4c93007ed0a021 ]--- RIP: 0010:kvm_spurious_fault+0x9/0x10 arch/x86/kvm/x86.c:357 Code: e8 3c a6 75 00 41 bd 03 00 00 00 5b 44 89 e8 41 5c 41 5d 5d c3 66 90 66 2e 0f 1f 84 00 00 00 00 00 55 48 89 e5 e8 17 a6 75 00 <0f> 0b 0f 1f 44 00 00 55 48 89 e5 41 57 41 56 49 89 d6 41 55 41 54 RSP: 0018:ffff88804d41f198 EFLAGS: 00010212 RAX: 0000000000040000 RBX: 1ffff11009a83e3a RCX: ffffc90008124000 RDX: 0000000000002ac9 RSI: ffffffff810bdb99 RDI: 0000000000000005 RBP: ffff88804d41f198 R08: ffff88809f4cc6c0 R09: ffffed1014c7969a R10: ffffed1014c79699 R11: ffff8880a63cb4cf R12: ffff88804d41f2c8 R13: ffff88804d0bc000 R14: 0000000000000175 R15: ffff88804d41f230 FS: 0000000000000000(0000) GS:ffff8880ae600000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: ffff8880ae607cc0 CR3: 00000000a78ad000 CR4: 00000000001426f0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400