DF-2826 / panic.txt
options=43<RXCSUM,TXCSUM,RSS>
inet 127.0.0.1 netmask 0xff000000
inet6 ::1 prefixlen 128
inet6 fe80::1%lo0 prefixlen 64 scopeid 0x2
groups: lo
vtnet0: flags=808843<UP,BROADCAST,RUNNING,SIMPLEX,MULTICAST,PROXY> metric 0 mtu 1500
options=28<VLAN_MTU,JUMBO_MTU>
ether 52:54:00:12:34:56
inet6 fe80::5054:ff:fe12:3456%vtnet0 prefixlen 64 tentative scopeid 0x1
media: Ethernet 1000baseT <full-duplex>
status: active
route: writing to routing socket: File exists
add net default: gateway 10.0.2.2: File exists
Additional routing options:.
Starting devd.
Additional TCP options:.
Mounting NFS file systems:.
ELF ldconfig path: /lib /usr/lib /usr/local/lib /usr/local/libdata/ldconfig/pkg
Building databases...
Starting syslogd.
Sep 1 18:30:07 dfbsd syslogd: kernel boot file is /boot/kernel/kernel
No core dumps found.
swap low/high-water marks set to 41940/62910
swapon: adding /dev/vbd0s1b as swap device
NFS CLIENT: access_cache_timeout=5 neg_cache_timeout=3.
Starting local daemons:.
Updating motd.
Configuring syscons: blanktime.
Starting sshd.
sendmail_submit: /etc/mail/aliases.db not present, generating
sendmail_clientmqueue: /etc/mail/aliases.db not present, generating
Starting cron.
Local package initialization:.
Tue Sep 1 18:30:07 UTC 2026
DragonFly/x86_64 (dfbsd) (ttyd0)
login: Sep 1 19:22:02 dfbsd kernel: pid 1525 (stage2), uid 0: exited on signal 10 (core dumped)
Sep 1 19:22:15 dfbsd kernel: pid 1533 (stage2), uid 0: exited on signal 10 (core dumped)
Sep 1 19:22:30 dfbsd kernel: pid 1544 (stage2), uid 0: exited on signal 10 (core dumped)
Sep 1 19:23:08 dfbsd kernel: pid 1590 (stage2), uid 0: exited on signal 10 (core dumped)
Sep 1 19:23:32 dfbsd kernel: pid 1614 (stage2), uid 0: exited on signal 10 (core dumped)
Sep 1 19:26:21 dfbsd kernel: pid 1735 (mt3), uid 0: exited on signal 11 (core dumped)
Sep 1 19:26:43 dfbsd kernel: pid 1752 (stage2), uid 0: exited on signal 10 (core dumped)
panic: vref: bad refcnt 00000000 1
cpuid = 0
Trace beginning at frame 0xfffff801185874a8
vref() at vref+0x36 0xffffffff806f6bc6
vref() at vref+0x36 0xffffffff806f6bc6
vnode_pager_reference() at vnode_pager_reference+0x1d 0xffffffff809bfe2d
vm_mmap() at vm_mmap+0x3a7 0xffffffff809a9b57
fp_mmap() at fp_mmap+0x14a 0xffffffff80638d2a
mmap_phdr() at mmap_phdr+0x54 0xffffffff8061d9d4
Debugger("panic")
CPU0 stopping CPUs: 0x0000003e
stopped
Stopped at Debugger+0x7c: movb $0,0xbdaf09(%rip)
db>