Using anonymous memory (256 MB)
Copyright (c) 2003-2026 The DragonFly Project.
Copyright (c) 1992-2003 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.
DragonFly 6.5-DEVELOPMENT #2: Wed Sep 30 17:12:38 UTC 2026
    root@dfbsd:/usr/src/sys/compile/VKERNEL64
real memory = 268435456 (262144K bytes)
avail memory = 257908736 (251864K bytes)
DragonFly/MP: Multiprocessor
 cpu0 (BSP)
 cpu1 (AP)
CPU Topology: cores_per_chip: 1; threads_per_core: 1; chips_per_package: 2;
Initialize MI interrupts for 2 cpus
initclocks
SMP: AP CPU #1 Launched!
WARNING: KERNBASE being used
interrupt uses mplock: swi_taskq
wdog: In-kernel automatic watchdog reset enabled
vkd0: <Virtual disk> 
vkd0: 128MB (262144 512 byte sectors)
md0: Malloc disk
VCDDBG: bio cmd=1 off=0 bcount=2048 dev=vcd0
vcd0: MBR magic not found; assume a COMPATIBILITY_SLICE (s0)
VCDDBG: bio cmd=1 off=2048 bcount=2048 dev=vcd0
VCDDBG: bio cmd=1 off=0 bcount=2048 dev=vcd0
vkd0: MBR magic not found; assume a COMPATIBILITY_SLICE (s0)
md0: MBR magic not found; assume a COMPATIBILITY_SLICE (s0)
ipfw2 initialized, default to accept, logging disabled
DUMMYNET initialized (011031)
CAM: Configuring 0 busses
CAM: finished configuring all busses
Mounting root from ufs:vkd0s0a
DMA space used: 0k, remaining available: 0k
Mounting devfs
DF-5171(B) vcd FLUSH panic PoC (hammer) start
MOUNTING hammer on /dev/vcd0 (rw)...
VCDDBG: bio cmd=1 off=0 bcount=16384 dev=vcd0
VCDDBG: bio cmd=1 off=554188800 bcount=16384 dev=vcd0
HAMMER(vktest2) recovery check seqno=000fffff
VCDDBG: bio cmd=1 off=17334272 bcount=16384 dev=vcd0
HAMMER(vktest2) recovery range 3000000000000000-3000000000000000
HAMMER(vktest2) recovery nexto 3000000000000000 endseqno=00100000
VCDDBG: bio cmd=2 off=0 bcount=16384 dev=vcd0
VCDDBG: bio cmd=5 off=0 bcount=0 dev=vcd0
panic: vcd: bad b_cmd 5
cpuid = 0
Trace beginning at frame 0x80067f7190
gptinit() at 0x719b47
gptinit() at 0x719b47
dev_dstrategy() at 0x49fb03
devstat_end_transaction_buf() at 0x502feb
dev_dstrategy_chain() at 0x49fc3b
devfs_WildCaseCmp() at 0x66793b
Debugger("panic")

CPU0 stopping CPUs: 0x0000000000000002
 stopped
Stopped at      0x71cb09:       movb    $0,0x9f859c(%rip)
db> panic: vconsgetc: EOF on console 0 19
cpuid = 0
boot() called on cpu#0
Uptime: 3s
vkernels don't support dumps
Caught SIGTERM from host system. Shutting down...