After sysupgrading my Ubiquiti EdgeRouter 6P home router on 18.12.26 from
what's probably a one (two tops) week old snap to
OpenBSD 7.8-current (GENERIC.MP) #112: Fri Dec 12 22:29:50 MST 2025
the network dies completely after about a day of uptime:
cnmac5: cannot allocate command buffer from free pool allocator
cnmac5: failed to transmit packet
This gets spammed every second for multiple used cnmac(4) interfaces,
dhcp[6]leased fail to get leases/prefixes over [vlan over] cnmac,
IPv6 link-local via vport over veb-with-cnmac is unreachable,
I can only connect via serial console and for now reboot the machine.
The previous snap's dmesg rotated out due to log spam as this usually
happens when I'm not around:
er-6p# zgrep -c -e 'failed to transmit packet' /var/log/messages.?.gz
/var/log/messages.0.gz:3778
/var/log/messages.1.gz:5399
/var/log/messages.2.gz:7640
/var/log/messages.3.gz:8378
/var/log/messages.4.gz:8327
(syslog's dedup doesn't kick in since the two lines alternate.)
This is the second time since that upgrade, no reboots other than the two
to promptly restore networking at home.
Previously it worked for months on 7.8-stable, then weeks on periodic 7.8 snaps.
The only change in network config was a) simplifying vlan/vport/veb/cnmac into
vlan/cnmac after dlg's vlan-aware veb and b) mounting NFS over cnmac as client
for occasional builds.
Given that the allocation failures happen on cnmac interfaces outside of these
constructs, I conclude they have nothing to do with it.
I'll try to extract more info via console once it happens while I'm around.
[ using 776072 bytes of bsd ELF symbol table ]
Copyright (c) 1982, 1986, 1989, 1991, 1993
The Regents of the University of California. All rights reserved.
Copyright (c) 1995-2025 OpenBSD. All rights reserved. https://www.OpenBSD.org
OpenBSD 7.8-current (GENERIC.MP) #112: Fri Dec 12 22:29:50 MST 2025
[email protected]:/usr/src/sys/arch/octeon/compile/GENERIC.MP
real mem = 1073741824 (1024MB)
avail mem = 1035124736 (987MB)
random: good seed from bootblocks
mainbus0 at root: board 20300 rev 1.23, model cavium,ubnt_e300
cpu0 at mainbus0: CN70xx/CN71xx CPU rev 0.2 1000 MHz, CN70xx/CN71xx FPU rev 0.0
cpu0: cache L1-I 78KB 39 way D 32KB 32 way, L2 1024KB 8 way
cpu1 at mainbus0: CN70xx/CN71xx CPU rev 0.2 1000 MHz, CN70xx/CN71xx FPU rev 0.0
cpu1: cache L1-I 78KB 39 way D 32KB 32 way, L2 1024KB 8 way
cpu2 at mainbus0: CN70xx/CN71xx CPU rev 0.2 1000 MHz, CN70xx/CN71xx FPU rev 0.0
cpu2: cache L1-I 78KB 39 way D 32KB 32 way, L2 1024KB 8 way
cpu3 at mainbus0: CN70xx/CN71xx CPU rev 0.2 1000 MHz, CN70xx/CN71xx FPU rev 0.0
cpu3: cache L1-I 78KB 39 way D 32KB 32 way, L2 1024KB 8 way
clock0 at mainbus0: int 5
octcrypto0 at mainbus0
iobus0 at mainbus0
simplebus0 at iobus0: "soc"
"bootbus" at simplebus0 not configured
octciu0 at simplebus0
octcib0 at simplebus0: max-bits 23
octcib1 at simplebus0: max-bits 12
octcib2 at simplebus0: max-bits 6
octcib3 at simplebus0: max-bits 15
octcib4 at simplebus0: max-bits 4
octcib5 at simplebus0: max-bits 11
octcib6 at simplebus0: max-bits 11
octgpio0 at simplebus0: 20 pins, xbit 16
octsmi0 at simplebus0
octsmi1 at simplebus0
octpip0 at simplebus0
octgmx0 at octpip0 interface 0
cnmac0 at octgmx0: port 0 SGMII, address 74:83:c2:11:8c:97
ukphy0 at cnmac0 phy 4: Generic IEEE 802.3u media interface, rev. 2: OUI
0x0001c1, model 0x000c
cnmac1 at octgmx0: port 1 SGMII, address 74:83:c2:11:8c:98
ukphy1 at cnmac1 phy 5: Generic IEEE 802.3u media interface, rev. 2: OUI
0x0001c1, model 0x000c
cnmac2 at octgmx0: port 2 SGMII, address 74:83:c2:11:8c:99
ukphy2 at cnmac2 phy 6: Generic IEEE 802.3u media interface, rev. 2: OUI
0x0001c1, model 0x000c
cnmac3 at octgmx0: port 3 SGMII, address 74:83:c2:11:8c:9a
ukphy3 at cnmac3 phy 7: Generic IEEE 802.3u media interface, rev. 2: OUI
0x0001c1, model 0x000c
octgmx1 at octpip0 interface 1
cnmac4 at octgmx1: port 16 SGMII, address 74:83:c2:11:8c:9b
ukphy4 at cnmac4 phy 8: Generic IEEE 802.3u media interface, rev. 0: OUI
0x0001c1, model 0x0027
cnmac5 at octgmx1: port 17 SGMII, address 74:83:c2:11:8c:9c
ukphy5 at cnmac5 phy 9: Generic IEEE 802.3u media interface, rev. 0: OUI
0x0001c1, model 0x0027
octsctl0 at simplebus0: disabled
octxctl0 at simplebus0: DWC3 rev 0x250a
xhci0 at octxctl0, xHCI 1.0
usb0 at xhci0: USB revision 3.0
uhub0 at usb0 configuration 1 interface 0 "Generic xHCI root hub" rev 3.00/1.00
addr 1
octxctl1 at simplebus0: DWC3 rev 0x250a
xhci1 at octxctl1, xHCI 1.0
usb1 at xhci1: USB revision 3.0
uhub1 at usb1 configuration 1 interface 0 "Generic xHCI root hub" rev 3.00/1.00
addr 1
"i2c" at simplebus0 not configured
"i2c" at simplebus0 not configured
com0 at simplebus0: ns16550a, 64 byte fifo
com0: console
com1 at simplebus0: ns16550a, 64 byte fifo
com1: probed fifo depth: 0 bytes
octmmc0 at simplebus0
sdmmc0 at octmmc0: 8-bit, mmc high-speed
"spi" at simplebus0 not configured
"ocla0" at simplebus0 not configured
"dma-engine" at simplebus0 not configured
"dma-engine" at simplebus0 not configured
octrng0 at iobus0 base 0x1400000000000 irq 0
octpcie0 at iobus0: 3 ports
octpcie0 port 0: link timeout
octpcie0 port 1: reset timeout
octpcie0 port 2: reset timeout
uplcom0 at uhub0 port 1 configuration 1 interface 0 "Prolific Technology Inc.
USB-Serial Controller" rev 1.10/3.00 addr 2
ucom0 at uplcom0: usb0.0.00001.0
scsibus0 at sdmmc0: 2 targets, initiator 0
sd0 at scsibus0 targ 1 lun 0: <Kingston, MMC4GB, 0000> removable
sd0: 3728MB, 512 bytes/sector, 7634944 sectors
vscsi0 at root
scsibus1 at vscsi0: 256 targets
softraid0 at root
scsibus2 at softraid0: 256 targets
root on sd0a (3f2504aabc6eee02.a) swap on sd0b dump on sd0b
WARNING: CHECK AND RESET THE DATE!
