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/netbsd-kubsan/latest.tmp/key" "root@10.128.0.177" "pwd"]: exit status 255
ssh: connect to host 10.128.0.177 port 22: Connection timed out
Pseudo-terminal will not be allocated because stdin is not a terminal.
Warning: Permanently added '[ssh-serialport.googleapis.com]:9600,[216.239.38.127]:9600' (RSA) to the list of known hosts.
serialport: Connected to syzkaller.us-central1-c.ci2-netbsd-kubsan-test-0 port 1 (session ID: cfe79bb4277fc15ab6aea8715b7af475c95adba9b102eb86a7eaf98eb3a95c9e, active connections: 1).
SeaBIOS (version 1.8.2-20191010_205345-google)
Total RAM Size = 0x00000001e0000000 = 7680 MiB
CPUs found: 2     Max CPUs supported: 2
Comparing RSDP and RSDP
Comparing RSDT and RSDT
Comparing FACP and FACP
Comparing FACS and FACS
return 0 for FACS vs FACS: SUCCESS
Comparing DSDT and DSDT
return 0 for DSDT vs DSDT: SUCCESS
return 0 for FACP vs FACP: SUCCESS
Comparing SRAT and SRAT
return 0 for SRAT vs SRAT: SUCCESS
Comparing APIC and APIC
return 0 for APIC vs APIC: SUCCESS
Comparing SSDT and SSDT
return 0 for SSDT vs SSDT: SUCCESS
Comparing WAET and WAET
return 0 for WAET vs WAET: SUCCESS
return 0 for RSDT vs RSDT: SUCCESS
return 0 for RSDP vs RSDP: SUCCESS
found virtio-scsi at 0:3
virtio-scsi vendor='Google' product='PersistentDisk' rev='1' type=0 removable=0
virtio-scsi blksize=512 sectors=16777216 = 8192 MiB
drive 0x000f2800: PCHS=0/0/0 translation=lba LCHS=1024/255/63 s=16777216
Sending Seabios boot VM event.
Booting from Hard Disk 0...

>> NetBSD/x86 BIOS Boot, Revision 5.11 (Wed Jun  5 07:22:49 UTC 2019) (from NetBSD 8.99.42)
>> Memory: 639/3144640 k

     1. Boot normally
     2. Boot single user
     3. Drop to boot prompt

Choose an option; RETURN for default; SPACE to stop countdown.
Option 1 will be chosen in 5 seconds. 4 seconds. 3 seconds. 2 seconds. 1 seconds. 0 seconds. 0 seconds.     
command(s): rndseed /var/db/entropy-file;boot
default boot twice, skipping...
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[1393776\|/-\|/-\|/-\|/-\|/-\|/-\|/-\|/-\|/-\|/-\|/-\|/-\|/-\|/-\|/-\|/-\|/-\|/-\|/-\|/-\|/-\|/-\|+1033748/-\|/-\|/-\|/-\|/-\|/-\|/-\|/-\|/-\|/-\|/-\|/-\|/-\|/-\|/-\|/-\|/]=0x62513e0
-\|/-\|/-\|/-\|/-\|/-\|/-\|/WARNING: couldn't open /var/db/entropy-file
WARNING: 1 module failed to load
[   1.0000000] ksyms: checking .text
[   1.0000000] ksyms: checking .rodata.hotpatch
[   1.0000000] ksyms: checking .rodata
[   1.0000000] ksyms: checking .eh_frame
[   1.0000000] ksyms: checking link_set_modules
[   1.0000000] ksyms: checking link_set_evcnts
[   1.0000000] ksyms: checking link_set_sysctl_funcs
[   1.0000000] ksyms: checking link_set_domains
[   1.0000000] ksyms: checking link_set_ieee80211_funcs
[   1.0000000] ksyms: checking link_set_ah_chips
[   1.0000000] ksyms: checking link_set_ah_rfs
[   1.0000000] ksyms: checking link_set_sdt_argtypes_set
[   1.0000000] ksyms: checking link_set_sdt_probes_set
[   1.0000000] ksyms: checking link_set_linux_module_param_desc
[   1.0000000] ksyms: checking link_set_linux_module_param_info
[   1.0000000] ksyms: checking link_set_sdt_providers_set
[   1.0000000] ksyms: checking link_set_dkwedge_methods
[   1.0000000] ksyms: checking link_set_prop_linkpools
[   1.0000000] ksyms: checking .data
[   1.0000000] ksyms: checking .data.cacheline_aligned
[   1.0000000] ksyms: checking .data.read_mostly
[   1.0000000] ksyms: checking .bss
[   1.0000000] ksyms: checking .note.netbsd.ident
[   1.0000000] ksyms: checking .ident
[   1.0000000] ksyms: checking .comment
[   1.0000000] ksyms: checking .symtab
[   1.0000000] ksyms: checking .strtab
[   1.0000000] ksyms: checking .shstrtab
[   1.0000000] Loaded initial symtab at 0xffffffff86200958, strtab at 0xffffffff86354dc8, # entries 58074
[   1.0000000] pool redzone disabled for 'pdppl'
[   1.0000000] pool redzone disabled for 'kmem-4096'
[   1.0000000] Copyright (c) 1996, 1997, 1998, 1999, 2000, 2001, 2002, 2003, 2004, 2005,
[   1.0000000]     2006, 2007, 2008, 2009, 2010, 2011, 2012, 2013, 2014, 2015, 2016, 2017,
[   1.0000000]     2018, 2019 The NetBSD Foundation, Inc.  All rights reserved.
[   1.0000000] Copyright (c) 1982, 1986, 1989, 1991, 1993
[   1.0000000]     The Regents of the University of California.  All rights reserved.

[   1.0000000] NetBSD 9.99.17 (GENERIC_SYZKALLER) #153: Fri Nov  1 17:39:56 UTC 2019
[   1.0000000] 	root@ci2:/syzkaller/managers/netbsd-kubsan/kernel/sys/arch/amd64/compile/obj/GENERIC_SYZKALLER
[   1.0000000] total memory = 7679 MB
[   1.0000000] avail memory = 7359 MB
[   1.0000000] pool redzone disabled for 'buf4k'
[   1.0000000] pool redzone disabled for 'buf64k'
[   1.0000000] cpu_rng: RDRAND
[   1.0000000] running cgd selftest aes-xts-256 aes-xts-512 done
[   1.0000030] mainbus0 (root)
[   1.0000030] ACPI: RSDP 0x00000000000F2840 000014 (v00 Google)
[   1.0000030] ACPI: RSDT 0x00000000BFFFFFA0 000038 (v01 Google GOOGRSDT 00000001 GOOG 00000001)
[   1.0000030] ACPI: FACP 0x00000000BFFFF380 0000F4 (v02 Google GOOGFACP 00000001 GOOG 00000001)
[   1.0000030] ACPI: DSDT 0x00000000BFFFDAC0 0018BA (v01 Google GOOGDSDT 00000001 GOOG 00000001)
[   1.0000030] ACPI: FACS 0x00000000BFFFDA80 000040
[   1.0000030] ACPI: SRAT 0x00000000BFFFFEB0 0000C8 (v01 Google GOOGSRAT 00000001 GOOG 00000001)
[   1.0000030] ACPI: APIC 0x00000000BFFFFE00 000076 (v01 Google GOOGAPIC 00000001 GOOG 00000001)
[   1.0000030] ACPI: SSDT 0x00000000BFFFF480 000980 (v01 Google GOOGSSDT 00000001 GOOG 00000001)
[   1.0000030] ACPI: WAET 0x00000000BFFFFE80 000028 (v01 Google GOOGWAET 00000001 GOOG 00000001)
[   1.0000030] ACPI: 2 ACPI AML tables successfully acquired and loaded
[   1.0000030] ioapic0 at mainbus0 apid 0
[   1.0000030] cpu0 at mainbus0 apid 0
[   1.0000030] cpu0: Intel(R) Xeon(R) CPU @ 2.30GHz, id 0x306f0
[   1.0000030] cpu0: package 0, core 0, smt 0
[   1.0000030] cpu1 at mainbus0 apid 1
[   1.0000030] cpu1: Intel(R) Xeon(R) CPU @ 2.30GHz, id 0x306f0
[   1.0000030] cpu1: package 0, core 0, smt 1
[   1.0000030] acpi0 at mainbus0: Intel ACPICA 20190816
[   1.0000030] acpi0: fixed power button present
[   1.0000030] acpi0: fixed sleep button present
[   1.0335201] pckbc1 at acpi0 (KBD, PNP0303) (kbd port): io 0x60,0x64 irq 1
[   1.0335201] pckbc2 at acpi0 (MOU, PNP0F13) (aux port): irq 12
[   1.0335201] COM1 (PNP0501) at acpi0 not configured
[   1.0335201] COM2 (PNP0501) at acpi0 not configured
[   1.0335201] COM3 (PNP0501) at acpi0 not configured
[   1.0335201] COM4 (PNP0501) at acpi0 not configured
[   1.0335201] PEVT (QEMU0001) at acpi0 not configured
[   1.0335201] ACPI: Enabled 16 GPEs in block 00 to 0F
[   1.0335201] pckbd0 at pckbc1 (kbd slot)
[   1.0335201] pckbc1: using irq 1 for kbd slot
[   1.0335201] wskbd0 at pckbd0 mux 1
[   1.0335201] pms0 at pckbc1 (aux slot)
[   1.0335201] pckbc1: using irq 12 for aux slot
[   1.0335201] wsmouse0 at pms0 mux 0
[   1.0335201] pci0 at mainbus0 bus 0: configuration mode 1
[   1.0335201] pchb0 at pci0 dev 0 function 0: vendor 8086 product 1237 (rev. 0x02)
[   1.0335201] pcib0 at pci0 dev 1 function 0: vendor 8086 product 7110 (rev. 0x03)
[   1.0335201] piixpm0 at pci0 dev 1 function 3: vendor 8086 product 7113 (rev. 0x03)
[   1.0335201] piixpm0: SMBus disabled
[   1.0335201] virtio0 at pci0 dev 3 function 0
[   1.0335201] virtio0: Virtio SCSI Device (rev. 0x00)
[   1.0335201] vioscsi0 at virtio0: Features: 0x0
[   1.0335201] vioscsi0: cmd_per_lun 256 qsize 8192 seg_max 64 max_target 253 max_lun 1
[   1.0335201] virtio0: config interrupting at msix0 vec 0
[   1.0335201] virtio0: queues interrupting at msix0 vec 1
[   1.0335201] scsibus0 at vioscsi0: 16 targets, 1 lun per target
[   1.0335201] virtio1 at pci0 dev 4 function 0
[   1.0335201] virtio1: Virtio Network Device (rev. 0x00)
[   1.0335201] vioif0 at virtio1: Features: 0x30020<CTRL_VQ,STATUS,MAC>
[   1.0335201] vioif0: Ethernet address 42:01:0a:80:00:b1
[   1.0335201] virtio1: config interrupting at msix1 vec 0
[   1.0335201] virtio1: queues interrupting at msix1 vec 1
[   1.0335201] isa0 at pcib0
[   1.0335201] com0 at isa0 port 0x3f8-0x3ff irq 4: ns16550a, working fifo
[   1.0335201] com0: console
[   1.0335201] com1 at isa0 port 0x2f8-0x2ff irq 3: ns16550a, working fifo
[   1.0335201] attimer0 at isa0 port 0x40-0x43
[   1.0335201] pcppi0 at isa0 port 0x61
[   1.0335201] spkr0 at pcppi0: PC Speaker
[   1.0335201] wsbell at spkr0 not configured
[   1.0335201] midi0 at pcppi0: PC speaker
[   1.0335201] sysbeep0 at pcppi0
[   1.0335201] attimer0: attached to pcppi0
[   1.0335201] acpicpu0 at cpu0: ACPI CPU
[   1.0335201] acpicpu1 at cpu1: ACPI CPU
[   1.3291124] sd0 at scsibus0 target 2 lun 0: <Google, PersistentDisk, 1> disk fixed
[   1.3291124] sd0: fabricating a geometry
[   1.3404810] sd0: 8192 MB, 8192 cyl, 64 head, 32 sec, 512 bytes/sect x 16777216 sectors
[   1.3404810] sd0: fabricating a geometry
[   1.3496393] panic: UBSan: Undefined Behavior in /syzkaller/managers/netbsd-kubsan/kernel/sys/kern/subr_disk_mbr.c:574:9, member access within misaligned address 0xffff942d3de8c03c for type 'const struct disklabel' which requires 8 byte alignment

[   1.3663828] cpu0: Begin traceback...
[   1.3689943] vpanic() at netbsd:vpanic+0x2aa
[   1.3788101] isAlreadyReported() at netbsd:isAlreadyReported
[   1.3988418] HandleTypeMismatch.part.1() at netbsd:HandleTypeMismatch.part.1+0xcc
[   1.4088591] HandleTypeMismatch() at netbsd:HandleTypeMismatch+0x7b
[   1.4288896] check_label_magic() at netbsd:check_label_magic+0x9f
[   1.4389098] validate_label() at netbsd:validate_label+0x1b4
[   1.4489214] look_netbsd_part() at netbsd:look_netbsd_part+0x3ce
[   1.4689530] scan_mbr() at netbsd:scan_mbr+0x24a
[   1.4789689] readdisklabel() at netbsd:readdisklabel+0x412
[   1.4898443] dk_getdisklabel() at netbsd:dk_getdisklabel+0x192
[   1.5090177] dk_open() at netbsd:dk_open+0x456
[   1.5190333] sdopen() at netbsd:sdopen+0x114
[   1.5290486] cdev_open() at netbsd:cdev_open+0xe5
[   1.5490803] spec_open() at netbsd:spec_open+0x3ad
[   1.5591508] VOP_OPEN() at netbsd:VOP_OPEN+0x113
[   1.5791291] dkwedge_discover() at netbsd:dkwedge_discover+0xcf
[   1.5891449] sdattach() at netbsd:sdattach+0x53f
[   1.5991611] config_attach_loc() at netbsd:config_attach_loc+0x432
[   1.6191925] scsi_probe_bus() at netbsd:scsi_probe_bus+0xad8
[   1.6292092] scsibus_discover_thread() at netbsd:scsibus_discover_thread+0xdd
[   1.6392253] cpu0: End traceback...
[   1.6392253] fatal breakpoint trap in supervisor mode
[   1.6392253] trap type 1 code 0 rip 0xffffffff8021dddd cs 0x8 rflags 0x282 cr2 0 ilevel 0 rsp 0xffffbc80a5c02280
[   1.6555812] curlwp 0xffff942c2bcce9c0 pid 0.28 lowest kstack 0xffffbc80a5bff2c0
Stopped in pid 0.28 (system) at netbsd:breakpoint+0x5:  leave
db{0}>