./strace-static-x86_64 -e \!wait4,clock_nanosleep,nanosleep -s 100 -x -f ./syz-executor2069024082 <...> DUID 00:04:5a:7a:52:ad:4b:e5:ff:c1:d1:3d:bd:97:7e:8a:4f:1f forked to background, child pid 3181 [ 24.106619][ T3182] 8021q: adding VLAN 0 to HW filter on device bond0 [ 24.115587][ T3182] eql: remember to turn off Van-Jacobson compression on your slave devices Starting sshd: OK syzkaller Warning: Permanently added '10.128.10.42' (ECDSA) to the list of known hosts. execve("./syz-executor2069024082", ["./syz-executor2069024082"], 0x7fff5df7ee70 /* 10 vars */) = 0 brk(NULL) = 0x555556595000 brk(0x555556595c40) = 0x555556595c40 arch_prctl(ARCH_SET_FS, 0x555556595300) = 0 uname({sysname="Linux", nodename="syzkaller", ...}) = 0 readlink("/proc/self/exe", "/root/syz-executor2069024082", 4096) = 28 brk(0x5555565b6c40) = 0x5555565b6c40 brk(0x5555565b7000) = 0x5555565b7000 mprotect(0x7f2ca6859000, 16384, PROT_READ) = 0 mmap(0x1ffff000, 4096, PROT_NONE, MAP_PRIVATE|MAP_FIXED|MAP_ANONYMOUS, -1, 0) = 0x1ffff000 mmap(0x20000000, 16777216, PROT_READ|PROT_WRITE|PROT_EXEC, MAP_PRIVATE|MAP_FIXED|MAP_ANONYMOUS, -1, 0) = 0x20000000 mmap(0x21000000, 4096, PROT_NONE, MAP_PRIVATE|MAP_FIXED|MAP_ANONYMOUS, -1, 0) = 0x21000000 openat(AT_FDCWD, "/dev/kvm", O_RDONLY) = 3 ioctl(3, KVM_CREATE_VM, 0) = 4 ioctl(4, KVM_CREATE_VCPU, 0) = 5 ioctl(4, KVM_SET_USER_MEMORY_REGION, {slot=0, flags=0, guest_phys_addr=0, memory_size=4096, userspace_addr=0x2003d000}) = 0 ioctl(4, KVM_SET_USER_MEMORY_REGION, {slot=1, flags=0, guest_phys_addr=0x1000, memory_size=4096, userspace_addr=0x2003e000}) = 0 ioctl(4, KVM_SET_USER_MEMORY_REGION, {slot=2, flags=0, guest_phys_addr=0x2000, memory_size=4096, userspace_addr=0x2003f000}) = 0 ioctl(4, KVM_SET_USER_MEMORY_REGION, {slot=3, flags=0, guest_phys_addr=0x3000, memory_size=4096, userspace_addr=0x20040000}) = 0 ioctl(4, KVM_SET_USER_MEMORY_REGION, {slot=4, flags=0, guest_phys_addr=0x4000, memory_size=4096, userspace_addr=0x20041000}) = 0 ioctl(4, KVM_SET_USER_MEMORY_REGION, {slot=5, flags=0, guest_phys_addr=0x5000, memory_size=4096, userspace_addr=0x20042000}) = 0 ioctl(4, KVM_SET_USER_MEMORY_REGION, {slot=6, flags=0, guest_phys_addr=0x6000, memory_size=4096, userspace_addr=0x20043000}) = 0 ioctl(4, KVM_SET_USER_MEMORY_REGION, {slot=7, flags=0, guest_phys_addr=0x7000, memory_size=4096, userspace_addr=0x20044000}) = 0 ioctl(4, KVM_SET_USER_MEMORY_REGION, {slot=8, flags=0, guest_phys_addr=0x8000, memory_size=4096, userspace_addr=0x20045000}) = 0 ioctl(4, KVM_SET_USER_MEMORY_REGION, {slot=9, flags=0, guest_phys_addr=0x9000, memory_size=4096, userspace_addr=0x20046000}) = 0 ioctl(4, KVM_SET_USER_MEMORY_REGION, {slot=10, flags=0, guest_phys_addr=0xfec00000, memory_size=4096, userspace_addr=0x20047000}) = 0 ioctl(4, KVM_SET_USER_MEMORY_REGION, {slot=11, flags=0, guest_phys_addr=0xb000, memory_size=4096, userspace_addr=0x20048000}) = 0 ioctl(4, KVM_SET_USER_MEMORY_REGION, {slot=12, flags=0, guest_phys_addr=0xc000, memory_size=4096, userspace_addr=0x20049000}) = 0 ioctl(4, KVM_SET_USER_MEMORY_REGION, {slot=13, flags=0, guest_phys_addr=0xd000, memory_size=4096, userspace_addr=0x2004a000}) = 0 ioctl(4, KVM_SET_USER_MEMORY_REGION, {slot=14, flags=0, guest_phys_addr=0xe000, memory_size=4096, userspace_addr=0x2004b000}) = 0 ioctl(4, KVM_SET_USER_MEMORY_REGION, {slot=15, flags=0, guest_phys_addr=0xf000, memory_size=4096, userspace_addr=0x2004c000}) = 0 ioctl(4, KVM_SET_USER_MEMORY_REGION, {slot=16, flags=0, guest_phys_addr=0x10000, memory_size=4096, userspace_addr=0x2004d000}) = 0 syzkaller login: [ 54.745957][ T3602] L1TF CPU bug present and SMT on, data leak possible. See CVE-2018-3646 and https://www.kernel.org/doc/html/latest/admin-guide/hw-vuln/l1tf.html for details. ioctl(4, KVM_SET_USER_MEMORY_REGION, {slot=17, flags=0, guest_phys_addr=0x11000, memory_size=4096, userspace_addr=0x2004e000}) = 0 ioctl(4, KVM_SET_USER_MEMORY_REGION, {slot=18, flags=0, guest_phys_addr=0x12000, memory_size=4096, userspace_addr=0x2004f000}) = 0 ioctl(4, KVM_SET_USER_MEMORY_REGION, {slot=19, flags=0, guest_phys_addr=0x13000, memory_size=4096, userspace_addr=0x20050000}) = 0 ioctl(4, KVM_SET_USER_MEMORY_REGION, {slot=20, flags=0, guest_phys_addr=0x14000, memory_size=4096, userspace_addr=0x20051000}) = 0 ioctl(4, KVM_SET_USER_MEMORY_REGION, {slot=21, flags=0, guest_phys_addr=0x15000, memory_size=4096, userspace_addr=0x20052000}) = 0 ioctl(4, KVM_SET_USER_MEMORY_REGION, {slot=22, flags=0, guest_phys_addr=0x16000, memory_size=4096, userspace_addr=0x20053000}) = 0 ioctl(4, KVM_SET_USER_MEMORY_REGION, {slot=23, flags=0, guest_phys_addr=0x17000, memory_size=4096, userspace_addr=0x20054000}) = 0 ioctl(4, KVM_SET_USER_MEMORY_REGION, {slot=65537, flags=0, guest_phys_addr=0x30000, memory_size=65536, userspace_addr=0x2003d000}) = 0 ioctl(5, KVM_GET_SREGS, {cs={base=0xffff0000, limit=65535, selector=61440, type=11, present=1, dpl=0, db=0, s=1, l=0, g=0, avl=0}, ...}) = 0 openat(AT_FDCWD, "/dev/kvm", O_RDWR) = 6 ioctl(6, KVM_GET_SUPPORTED_CPUID, {nent=33, entries=[...]}) = 0 ioctl(5, KVM_SET_CPUID2, {nent=33, entries=[...]}) = 0 close(6) = 0 ioctl(5, KVM_SET_MSRS, 0x7ffffc62c460) = 5 ioctl(5, KVM_SET_SREGS, {cs={base=0, limit=1048575, selector=48, type=11, present=1, dpl=0, db=1, s=1, l=0, g=0, avl=0}, ...}) = 0 ioctl(5, KVM_SET_REGS, {rax=0, ..., rsp=0xf80, rbp=0, ..., rip=0, rflags=0x2}) = 0 ioctl(5, KVM_RUN, 0) = 0 ioctl(5, KVM_SET_SREGS, {cs={base=0, limit=0, selector=0, type=0, present=0, dpl=0, db=0, s=0, l=0, g=0, avl=0}, ...}) = 0 ioctl(5, KVM_RUN, 0) = 0 [ 54.821376][ T3602] kvm: KVM_SET_TSS_ADDR need to be called before entering vcpu [ 54.831010][ T3602] set kvm_intel.dump_invalid_vmcs=1 to dump internal KVM state. [ 54.839264][ T3602] ------------[ cut here ]------------ [ 54.844739][ T3602] WARNING: CPU: 0 PID: 3602 at arch/x86/kvm/x86.c:11160 kvm_arch_vcpu_ioctl_run+0x247c/0x2b30 [ 54.855203][ T3602] Modules linked in: [ 54.859261][ T3602] CPU: 0 PID: 3602 Comm: syz-executor206 Not tainted 6.1.0-rc2-syzkaller-00105-gb229b6ca5abb #0 [ 54.869765][ T3602] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/11/2022 [ 54.879855][ T3602] RIP: 0010:kvm_arch_vcpu_ioctl_run+0x247c/0x2b30 [ 54.886273][ T3602] Code: e8 49 8b b6 00 e9 d0 dd ff ff 48 8b 7c 24 28 e8 ca 8a b6 00 e9 12 dd ff ff e8 70 3a 6a 00 0f 0b e9 4f e0 ff ff e8 64 3a 6a 00 <0f> 0b e9 87 e0 ff ff e8 58 3a 6a 00 be 08 00 00 00 65 48 8b 1c 25 [ 54.906174][ T3602] RSP: 0018:ffffc90003c2fca0 EFLAGS: 00010293 [ 54.912550][ T3602] RAX: 0000000000000000 RBX: 0000000000000001 RCX: 0000000000000000 [ 54.920686][ T3602] RDX: ffff88801edb0000 RSI: ffffffff8112621c RDI: 0000000000000005 [ 54.928734][ T3602] RBP: ffff88807cac0000 R08: 0000000000000005 R09: 0000000000000000 [ 54.936724][ T3602] R10: 0000000000000001 R11: 000000000008c07e R12: 0000000000000000 [ 54.944862][ T3602] R13: ffff88807cac0048 R14: ffff88801bbe93c0 R15: ffff88807cac02ec [ 54.952971][ T3602] FS: 0000555556595300(0000) GS:ffff8880b9a00000(0000) knlGS:0000000000000000 [ 54.961967][ T3602] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 54.968585][ T3602] CR2: 0000557c81dcf068 CR3: 00000000732aa000 CR4: 00000000003526f0 [ 54.976679][ T3602] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 54.984916][ T3602] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 54.992957][ T3602] Call Trace: [ 54.996243][ T3602] [ 54.999221][ T3602] kvm_vcpu_ioctl+0x570/0xfc0 [ 55.003934][ T3602] ? kvm_release_pfn_dirty+0x220/0x220 [ 55.009602][ T3602] ? rcu_read_lock_sched_held+0xd/0x70 [ 55.015088][ T3602] ? lock_release+0x5cb/0x810 [ 55.019820][ T3602] ? ptrace_notify+0xfa/0x140 [ 55.024518][ T3602] ? lock_downgrade+0x6e0/0x6e0 [ 55.029398][ T3602] ? bpf_lsm_file_ioctl+0x5/0x10 [ 55.034348][ T3602] ? kvm_release_pfn_dirty+0x220/0x220 [ 55.039856][ T3602] __x64_sys_ioctl+0x193/0x200 [ 55.044641][ T3602] do_syscall_64+0x35/0xb0 [ 55.049093][ T3602] entry_SYSCALL_64_after_hwframe+0x63/0xcd [ 55.055004][ T3602] RIP: 0033:0x7f2ca67ed279 [ 55.059454][ T3602] Code: 28 c3 e8 2a 14 00 00 66 2e 0f 1f 84 00 00 00 00 00 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 73 01 c3 48 c7 c1 c0 ff ff ff f7 d8 64 89 01 48 [ 55.079113][ T3602] RSP: 002b:00007ffffc62dfb8 EFLAGS: 00000246 ORIG_RAX: 0000000000000010 [ 55.087523][ T3602] RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 00007f2ca67ed279 [ 55.095514][ T3602] RDX: 0000000000000000 RSI: 000000000000ae80 RDI: 0000000000000005 [ 55.103525][ T3602] RBP: 00007f2ca67b0cd0 R08: 0000000000000000 R09: 0000000000000000 [ 55.111525][ T3602] R10: 0000000000000000 R11: 0000000000000246 R12: 00007f2ca67b0d60 [ 55.119659][ T3602] R13: 0000000000000000 R14: 0000000000000000 R15: 0000000000000000 [ 55.127633][ T3602] [ 55.130675][ T3602] Kernel panic - not syncing: panic_on_warn set ... [ 55.137266][ T3602] CPU: 0 PID: 3602 Comm: syz-executor206 Not tainted 6.1.0-rc2-syzkaller-00105-gb229b6ca5abb #0 [ 55.147684][ T3602] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/11/2022 [ 55.157740][ T3602] Call Trace: [ 55.161016][ T3602] [ 55.163949][ T3602] dump_stack_lvl+0xcd/0x134 [ 55.168560][ T3602] panic+0x2c8/0x622 [ 55.172480][ T3602] ? panic_print_sys_info.part.0+0x110/0x110 [ 55.178482][ T3602] ? __warn.cold+0x24b/0x350 [ 55.183090][ T3602] ? kvm_arch_vcpu_ioctl_run+0x247c/0x2b30 [ 55.188916][ T3602] __warn.cold+0x25c/0x350 [ 55.193353][ T3602] ? kvm_arch_vcpu_ioctl_run+0x247c/0x2b30 [ 55.199182][ T3602] report_bug+0x1bc/0x210 [ 55.203526][ T3602] handle_bug+0x3c/0x70 [ 55.207699][ T3602] exc_invalid_op+0x14/0x40 [ 55.212220][ T3602] asm_exc_invalid_op+0x16/0x20 [ 55.217085][ T3602] RIP: 0010:kvm_arch_vcpu_ioctl_run+0x247c/0x2b30 [ 55.223522][ T3602] Code: e8 49 8b b6 00 e9 d0 dd ff ff 48 8b 7c 24 28 e8 ca 8a b6 00 e9 12 dd ff ff e8 70 3a 6a 00 0f 0b e9 4f e0 ff ff e8 64 3a 6a 00 <0f> 0b e9 87 e0 ff ff e8 58 3a 6a 00 be 08 00 00 00 65 48 8b 1c 25 [ 55.243136][ T3602] RSP: 0018:ffffc90003c2fca0 EFLAGS: 00010293 [ 55.249208][ T3602] RAX: 0000000000000000 RBX: 0000000000000001 RCX: 0000000000000000 [ 55.257183][ T3602] RDX: ffff88801edb0000 RSI: ffffffff8112621c RDI: 0000000000000005 [ 55.265159][ T3602] RBP: ffff88807cac0000 R08: 0000000000000005 R09: 0000000000000000 [ 55.273141][ T3602] R10: 0000000000000001 R11: 000000000008c07e R12: 0000000000000000 [ 55.281115][ T3602] R13: ffff88807cac0048 R14: ffff88801bbe93c0 R15: ffff88807cac02ec [ 55.289096][ T3602] ? kvm_arch_vcpu_ioctl_run+0x247c/0x2b30 [ 55.294938][ T3602] kvm_vcpu_ioctl+0x570/0xfc0 [ 55.299633][ T3602] ? kvm_release_pfn_dirty+0x220/0x220 [ 55.305115][ T3602] ? rcu_read_lock_sched_held+0xd/0x70 [ 55.310587][ T3602] ? lock_release+0x5cb/0x810 [ 55.315279][ T3602] ? ptrace_notify+0xfa/0x140 [ 55.319977][ T3602] ? lock_downgrade+0x6e0/0x6e0 [ 55.324837][ T3602] ? bpf_lsm_file_ioctl+0x5/0x10 [ 55.329785][ T3602] ? kvm_release_pfn_dirty+0x220/0x220 [ 55.335263][ T3602] __x64_sys_ioctl+0x193/0x200 [ 55.340056][ T3602] do_syscall_64+0x35/0xb0 [ 55.344493][ T3602] entry_SYSCALL_64_after_hwframe+0x63/0xcd [ 55.350433][ T3602] RIP: 0033:0x7f2ca67ed279 [ 55.354850][ T3602] Code: 28 c3 e8 2a 14 00 00 66 2e 0f 1f 84 00 00 00 00 00 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 73 01 c3 48 c7 c1 c0 ff ff ff f7 d8 64 89 01 48 [ 55.374464][ T3602] RSP: 002b:00007ffffc62dfb8 EFLAGS: 00000246 ORIG_RAX: 0000000000000010 [ 55.382883][ T3602] RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 00007f2ca67ed279 [ 55.390866][ T3602] RDX: 0000000000000000 RSI: 000000000000ae80 RDI: 0000000000000005 [ 55.398845][ T3602] RBP: 00007f2ca67b0cd0 R08: 0000000000000000 R09: 0000000000000000 [ 55.406818][ T3602] R10: 0000000000000000 R11: 0000000000000246 R12: 00007f2ca67b0d60 [ 55.414799][ T3602] R13: 0000000000000000 R14: 0000000000000000 R15: 0000000000000000 [ 55.422801][ T3602] [ 55.425985][ T3602] Kernel Offset: disabled [ 55.430303][ T3602] Rebooting in 86400 seconds..