login: [  54.8407405] panic: kernel diagnostic assertion "c->c_magic == CALLOUT_MAGIC" failed: file "/syzkaller/managers/netbsd/kernel/sys/kern/kern_timeout.c", line 474 
[  54.8407405] cpu0: Begin traceback...
[  54.8407405] vpanic() at netbsd:vpanic+0x214
[  54.8407405] _GLOBAL__sub_D_65535_0_cpu_configure() at netbsd:_GLOBAL__sub_D_65535_0_cpu_configure
[  54.8407405] callout_halt() at netbsd:callout_halt+0x327
[  54.8407405] timer_settime() at netbsd:timer_settime+0x41c
[  54.8407405] dosetitimer() at netbsd:dosetitimer+0x3eb
[  54.8407405] sys___setitimer50() at netbsd:sys___setitimer50+0x127
[  54.8407405] sys___syscall() at netbsd:sys___syscall+0xe2
[  54.8407405] syscall() at netbsd:syscall+0x30e
[  54.8407405] --- syscall (number 198) ---
[  54.8407405] 7d3487e3f4aa:
[  54.8407405] cpu0: End traceback...

[  54.8407405] dumping to dev 4,1 (offset=0, size=0): not possible
[  54.8407405] rebooting...
SeaBIOS (version 1.8.2-20181029_212248-google)
Total RAM Size = 0x00000001e0000000 = 7680 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=4194304 = 2048 MiB
drive 0x000f2a00: PCHS=0/0/0 translation=lba LCHS=520/128/63 s=4194304
Booting from Hard Disk 0...

>> NetBSD/x86 BIOS Boot, Revision 5.10 (Tue Jul 17 14:59:51 UTC 2018) (from NetBSD 8.0)
>> Memory: 639/3144640 k

     1. Boot normally
     2. Boot single user
     3. Disable ACPI
     4. Disable ACPI and SMP
     5. Drop to boot prompt
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/-\|/-\|/-\|/-\|/-\|/-\|/-\|WARNING: couldn't open /var/db/entropy-file
WARNING: 1 module failed to load
[   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 8.99.34 (GENERIC_SYZKALLER) #6: Sun Feb 24 06:21:59 UTC 2019
[   1.0000000] 	root@ci2:/syzkaller/managers/netbsd/kernel/sys/arch/amd64/compile/obj/GENERIC_SYZKALLER
[   1.0000000] total memory = 7679 MB
[   1.0000000] avail memory = 6664 MB
[   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 0x00000000000F2A40 000014 (v00 Google)
[   1.0000030] ACPI: RSDT 0x00000000BFFFDBA0 000038 (v01 Google GOOGRSDT 00000001 GOOG 00000001)
[   1.0000030] ACPI: FACP 0x00000000BFFFFF00 0000F4 (v02 Google GOOGFACP 00000001 GOOG 00000001)
[   1.0000030] ACPI: DSDT 0x00000000BFFFDBE0 0017B2 (v01 Google GOOGDSDT 00000001 GOOG 00000001)
[   1.0000030] ACPI: FACS 0x00000000BFFFFEC0 000040
[   1.0000030] ACPI: SSDT 0x00000000BFFFF590 000930 (v01 Google GOOGSSDT 00000001 GOOG 00000001)
[   1.0000030] ACPI: APIC 0x00000000BFFFF4A0 000076 (v01 Google GOOGAPIC 00000001 GOOG 00000001)
[   1.0000030] ACPI: WAET 0x00000000BFFFF470 000028 (v01 Google GOOGWAET 00000001 GOOG 00000001)
[   1.0000030] ACPI: SRAT 0x00000000BFFFF3A0 0000C8 (v01 Google GOOGSRAT 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 20181213
[   1.0000030] acpi0: fixed power button present
[   1.0000030] acpi0: fixed sleep button present
[   1.0365314] pckbc1 at acpi0 (KBD, PNP0303) (kbd port): io 0x60,0x64 irq 1
[   1.0365314] pckbc2 at acpi0 (MOU, PNP0F13) (aux port): irq 12
[   1.0365314] COM1 (PNP0501) at acpi0 not configured
[   1.0365314] COM2 (PNP0501) at acpi0 not configured
[   1.0365314] COM3 (PNP0501) at acpi0 not configured
[   1.0365314] COM4 (PNP0501) at acpi0 not configured
[   1.0365314] PEVT (QEMU0001) at acpi0 not configured
[   1.0365314] ACPI: Enabled 16 GPEs in block 00 to 0F
[   1.0365314] pckbd0 at pckbc1 (kbd slot)
[   1.0365314] pckbc1: using irq 1 for kbd slot
[   1.0365314] wskbd0 at pckbd0 mux 1
[   1.0365314] pms0 at pckbc1 (aux slot)
[   1.0365314] pckbc1: using irq 12 for aux slot
[   1.0365314] wsmouse0 at pms0 mux 0
[   1.0365314] pci0 at mainbus0 bus 0: configuration mode 1
[   1.0365314] pchb0 at pci0 dev 0 function 0: vendor 8086 product 1237 (rev. 0x02)
[   1.0365314] pcib0 at pci0 dev 1 function 0: vendor 8086 product 7110 (rev. 0x03)
[   1.0365314] piixpm0 at pci0 dev 1 function 3: vendor 8086 product 7113 (rev. 0x03)
[   1.0365314] piixpm0: SMBus disabled
[   1.0365314] virtio0 at pci0 dev 3 function 0
[   1.0365314] virtio0: Virtio SCSI Device (rev. 0x00)
[   1.0365314] vioscsi0 at virtio0: Features: 0x0
[   1.0365314] vioscsi0: cmd_per_lun 256 qsize 8192 seg_max 64 max_target 253 max_lun 1
[   1.0365314] virtio0: config interrupting at msix0 vec 0
[   1.0365314] virtio0: queues interrupting at msix0 vec 1
[   1.0365314] scsibus0 at vioscsi0: 16 targets, 1 lun per target
[   1.0365314] virtio1 at pci0 dev 4 function 0
[   1.0365314] virtio1: Virtio Network Device (rev. 0x00)
[   1.0365314] vioif0 at virtio1: Features: 0x30020<CTRL_VQ,STATUS,MAC>
[   1.0365314] vioif0: Ethernet address 42:01:0a:80:00:f1
[   1.0365314] virtio1: config interrupting at msix1 vec 0
[   1.0365314] virtio1: queues interrupting at msix1 vec 1
[   1.0365314] isa0 at pcib0