>Synopsis: session uptime is wrong
>Category: system
>Environment:
System : OpenBSD 7.0
Details : OpenBSD 7.0 (GENERIC.MP) #698: Thu Sep 30 21:07:33 MDT
2021
dera...@octeon.openbsd.org:/usr/src/sys/arch/octeon/compile/GENERIC.MP
Architecture: OpenBSD.octeon
Machine : octeon
>Description:
On a router (octeon with no RTC) the uptime looks like so:
11:12AM up 2 days, 15:56, 1 user, load averages: 0.01, 0.03, 0.01
The pppoe(4) interface however displays 51 days uptime for a session:
pppoe0: flags=8851<UP,POINTOPOINT,RUNNING,SIMPLEX,MULTICAST> mtu 1500
description: Telekom
index 7 priority 0 llprio 3
dev: vlan7 state: session
sid: 0x3f2f PADI retries: 1 PADR retries: 0 time: 51d 08:03:55
<cut>
I reason that my router rebooted (which it did two days ago) and
used microuptime() to fill the session time, and then NTP updated
the time and we have this timejump. What should be done is the
uptime in seconds should be gotten and the ifconfig code that does
the ioctl(2) does the appropriate math.
>How-To-Repeat:
any pppoe0 router without RTC. Should see this behaviour on the very
first session.
>Fix:
explained in pseudo-words above. No workable code provided.
dmesg:
OpenBSD 7.0 (GENERIC.MP) #698: Thu Sep 30 21:07:33 MDT 2021
dera...@octeon.openbsd.org:/usr/src/sys/arch/octeon/compile/GENERIC.MP
real mem = 536870912 (512MB)
avail mem = 521224192 (497MB)
random: good seed from bootblocks
mainbus0 at root: board 20004 rev 0.16, model CN3xxx/CN5xxx
cpu0 at mainbus0: CN50xx CPU rev 0.1 500 MHz, Software FP emulation
cpu0: cache L1-I 32KB 4 way D 16KB 64 way, L2 128KB 8 way
cpu1 at mainbus0: CN50xx CPU rev 0.1 500 MHz, Software FP emulation
cpu1: cache L1-I 32KB 4 way D 16KB 64 way, L2 128KB 8 way
clock0 at mainbus0: int 5
octcrypto0 at mainbus0
iobus0 at mainbus0
simplebus0 at iobus0: "soc"
octciu0 at simplebus0
octsmi0 at simplebus0
octpip0 at simplebus0
octgmx0 at octpip0 interface 0
cnmac0 at octgmx0: port 0 RGMII, address fc:ec:da:04:8d:68
atphy0 at cnmac0 phy 7: AR8035 10/100/1000 PHY, rev. 2
cnmac1 at octgmx0: port 1 RGMII, address fc:ec:da:04:8d:69
atphy1 at cnmac1 phy 6: AR8035 10/100/1000 PHY, rev. 2
cnmac2 at octgmx0: port 2 RGMII, address fc:ec:da:04:8d:6a
atphy2 at cnmac2 phy 5: AR8035 10/100/1000 PHY, rev. 2
com0 at simplebus0: ns16550a, 64 byte fifo
com0: console
dwctwo0 at iobus0 base 0x1180068000000 irq 56
usb0 at dwctwo0: USB revision 2.0
uhub0 at usb0 configuration 1 interface 0 "Octeon DWC2 root hub" rev 2.00/1.00
addr 1
octrng0 at iobus0 base 0x1400000000000 irq 0
umass0 at uhub0 port 1 configuration 1 interface 0 " UDinfo UF2 4GB" rev
2.00/1.00 addr 2
umass0: using SCSI over Bulk-Only
scsibus0 at umass0: 2 targets, initiator 0
sd0 at scsibus0 targ 1 lun 0: <, UDinfo UF2 4GB, PMAP> removable
serial.13fe420077C9177D2781
sd0: 3824MB, 512 bytes/sector, 7831552 sectors
vscsi0 at root
scsibus1 at vscsi0: 256 targets
softraid0 at root
scsibus2 at softraid0: 256 targets
root on sd0a (d5ffec0c72cad730.a) swap on sd0b dump on sd0b
WARNING: /mnt was not properly unmounted
WARNING: CHECK AND RESET THE DATE!
usbdevs:
Controller /dev/usb0:
addr 01: 0000:0000 Octeon, DWC2 root hub
high speed, self powered, config 1, rev 1.00
driver: uhub0
addr 02: 13fe:4200 , UDinfo UF2 4GB
high speed, power 200 mA, config 1, rev 1.00, iSerial 070877C9177D2781
driver: umass0
pcidump:
acpidump:
