failed to run ["ssh" "-p" "22" "-F" "/dev/null" "-o" "UserKnownHostsFile=/dev/null" "-o" "BatchMode=yes" "-o" "IdentitiesOnly=yes" "-o" "StrictHostKeyChecking=no" "-o" "ConnectTimeout=10" "-i" "/syzkaller/managers/main/latest.tmp/key" "root@10.128.0.144" "pwd"]: exit status 255 ssh: connect to host 10.128.0.144 port 22: Operation timed out Pseudo-terminal will not be allocated because stdin is not a terminal. Warning: Permanently added '[ssh-serialport.googleapis.com]:9600' (RSA) to the list of known hosts. SeaBIOS (version 1.8.2-20190503_170316-google) Total RAM Size = 0x0000000080000000 = 2048 MiB CPUs found: 2 Max CPUs supported: 2 found virtio-scsi at 0:3 virtio-scsi vendor='Google' product='PersistentDisk' rev='1' type=0 removable=0 virtio-scsi blksize=512 sectors=6291456 = 3072 MiB drive 0x000f2790: PCHS=0/0/0 translation=lba LCHS=780/128/63 s=6291456 Booting from Hard Disk 0... Loading /boot/loader.conf.local -\|/-\|/-\|/-\|/-\|/-\|/-\|/-\|/-\|/-\|/-\|/-\|/-\|/-\|/-Loading kernel... \|/-\|/-\|/-\|/-\|/-\|/-\|/-\|/-\|/-\|/-\/boot/kernel/kernel text=0x1dfe9dc |/-\|/-\|/-\|/-\|/-\|/-\|/-\|/-\|/-\|/-\|/-\|/-\|/-\|/-\|/-\|/-\|/-\|/-\|/-\|/-\|/-\|/-\|/-\|/-\|/-\|/-\|/-\|/-\|/-\|/-\|/-\|/-\|/-\|/-\|/-\|/-\|/-\|/-\|/-\|/-\|/-\|/-\|/-\|/-\|/-\|/-\|/-\|/-\|/-\|/-\|/-\|/-\|/-\|/-\|/-\|/-\|/-\|/-\|/-\|/-\|data=0x247778+0x819278 /-\|/-\|/-\|/-\|/-\syms=[0x8+0x1b9468|/-\|/-\|/-\|/+0x8+0x1a48a3-\|/-\|/-\|/-] Loading configured modules... \|/-\|/-/boot/entropy size=0x1000 \|/-\GDB: no debug ports present KDB: debugger backends: ddb KDB: current backend: ddb ---<>--- Copyright (c) 1992-2019 The FreeBSD Project. Copyright (c) 1979, 1980, 1983, 1986, 1988, 1989, 1991, 1992, 1993, 1994 The Regents of the University of California. All rights reserved. FreeBSD is a registered trademark of The FreeBSD Foundation. FreeBSD 13.0-CURRENT d6aab066983(HEAD) SYZKALLER amd64 FreeBSD clang version 8.0.1 (branches/release_80 363030) (based on LLVM 8.0.1) WARNING: WITNESS option enabled, expect reduced performance. VT(vga): text 80x25 CPU: Intel(R) Xeon(R) CPU @ 2.30GHz (2173.79-MHz K8-class CPU) Origin="GenuineIntel" Id=0x306f0 Family=0x6 Model=0x3f Stepping=0 Features=0x1f83fbff Features2=0xfefa3223 AMD Features=0x2c100800 AMD Features2=0x21 Structured Extended Features=0x27eb Structured Extended Features3=0x20000400 XSAVE Features=0x1 IA32_ARCH_CAPS=0xc VT-x: PAT,HLT,PAUSE,EPT,UG,VPID TSC: P-state invariant Hypervisor: Origin = "KVMKVMKVM" real memory = 2147483648 (2048 MB) avail memory = 2030837760 (1936 MB) Event timer "LAPIC" quality 600 ACPI APIC Table: FreeBSD/SMP: Multiprocessor System Detected: 2 CPUs FreeBSD/SMP: 1 package(s) x 1 core(s) x 2 hardware threads random: unblocking device. ioapic0 irqs 0-23 on motherboard Launching APs: 1 random: entropy device external interface [ath_hal] loaded kbd1 at kbdmux0 module_register_init: MOD_LOAD (vesa, 0xffffffff817bab60, 0) error 19 random: registering fast source Intel Secure Key RNG random: fast provider: "Intel Secure Key RNG" 000.000051 [4254] netmap_init netmap: loaded module nexus0 vtvga0: on motherboard cryptosoft0: on motherboard acpi0: on motherboard acpi0: Power Button (fixed) acpi0: Sleep Button (fixed) cpu0: on acpi0 atrtc0: port 0x70-0x71,0x72-0x77 irq 8 on acpi0 atrtc0: registered as a time-of-day clock, resolution 1.000000s Event timer "RTC" frequency 32768 Hz quality 0 Timecounter "ACPI-fast" frequency 3579545 Hz quality 900 acpi_timer0: <24-bit timer at 3.579545MHz> port 0xb008-0xb00b on acpi0 pcib0: port 0xcf8-0xcff on acpi0 pci0: on pcib0 isab0: at device 1.0 on pci0 isa0: on isab0 pci0: at device 1.3 (no driver attached) virtio_pci0: port 0xc000-0xc03f mem 0xfebfe000-0xfebfe07f irq 11 at device 3.0 on pci0 vtscsi0: on virtio_pci0 virtio_pci1: port 0xc040-0xc07f mem 0xfebff000-0xfebff07f irq 11 at device 4.0 on pci0 vtnet0: on virtio_pci1 vtnet0: Ethernet address: 42:01:0a:80:00:90 vtnet0: netmap queues/slots: TX 2/2048, RX 2/2048 000.000122 [ 503] vtnet_netmap_attach vtnet attached txq=2, txd=2048 rxq=2, rxd=2048 atkbdc0: port 0x60,0x64 irq 1 on acpi0 atkbd0: irq 1 on atkbdc0 kbd0 at atkbd0 atkbd0: [GIANT-LOCKED] psm0: irq 12 on atkbdc0 psm0: [GIANT-LOCKED] psm0: model IntelliMouse Explorer, device ID 4 uart0: <16550 or compatible> port 0x3f8-0x3ff irq 4 flags 0x10 on acpi0 uart0: console (9600,n,8,1) uart1: <16550 or compatible> port 0x2f8-0x2ff irq 3 on acpi0 uart2: <16550 or compatible> port 0x3e8-0x3ef irq 6 on acpi0 uart3: <16550 or compatible> port 0x2e8-0x2ef irq 7 on acpi0 orm0: at iomem 0xeb800-0xeffff pnpid ORM0000 on isa0 vga0: at port 0x3b0-0x3bb iomem 0xb0000-0xb7fff pnpid PNP0900 on isa0 attimer0: at port 0x40 on isa0 Timecounter "i8254" frequency 1193182 Hz quality 0 attimer0: Can't map interrupt. Timecounters tick every 10.000 msec usb_needs_explore_all: no devclass da0 at vtscsi0 bus 0 scbus0 target 1 lun 0 da0: Fixed Direct Access SPC-4 SCSI device da0: 4294967.295MB/s transfers da0: Command Queueing enabled da0: 3072MB (6291456 512 byte sectors) Trying to mount root from ufs:/dev/gpt/rootfs [rw]... WARNING: WITNESS option enabled, expect reduced performance. GEOM: da0: the secondary GPT header is not in the last LBA. panic: Bad entry start/end for new stack entry cpuid = 0 time = 1561512892 KDB: stack backtrace: db_trace_self_wrapper() at db_trace_self_wrapper+0x47/frame 0xfffffe0016ae3370 vpanic() at vpanic+0x1e0/frame 0xfffffe0016ae33d0 panic() at panic+0x43/frame 0xfffffe0016ae3430 vm_map_stack_locked() at vm_map_stack_locked+0x364/frame 0xfffffe0016ae34a0 vm_map_stack() at vm_map_stack+0x11f/frame 0xfffffe0016ae3500 exec_new_vmspace() at exec_new_vmspace+0x4bd/frame 0xfffffe0016ae3570 exec_elf64_imgact() at exec_elf64_imgact+0x1262/frame 0xfffffe0016ae3670 kern_execve() at kern_execve+0x7d8/frame 0xfffffe0016ae39c0 start_init() at start_init+0x249/frame 0xfffffe0016ae3a60 fork_exit() at fork_exit+0xb0/frame 0xfffffe0016ae3ab0 fork_trampoline() at fork_trampoline+0xe/frame 0xfffffe0016ae3ab0 --- trap 0, rip = 0, rsp = 0, rbp = 0 --- KDB: enter: panic [ thread pid 1 tid 100002 ] Stopped at kdb_enter+0x6a: movq $0,kdb_why db> serialport: Connected to syzkaller.us-central1-c.ci-freebsd-main-test-1 port 1 (session ID: 6e2b3e8c2bbda2f2d75170c7973e1a4f10c1df267a5e84ade99eef10eccdc281, active connections: 1).