On 2018-03-03 23:03, Atanas Vladimirov wrote:
Synopsis: No login prompt randomly after reboot
Category: amd64
Environment:
System : OpenBSD 6.3
Details : OpenBSD 6.3-beta (GENERIC.MP) #26: Fri Mar 2 22:56:04
MST 2018
[email protected]:/usr/src/sys/arch/amd64/compile/GENERIC.MP
Architecture: OpenBSD.amd64
Machine : amd64
Description:
From time to time (reboot after upgrade to a newer snapshot) my home
server freeze after the
last line of dmesg (please see the attachment) and I have to reboot
it.
Sometimes it boots normally and I can ssh into it (the screen
show the last dmesg line like in the attachment)
and dmesg buffer shows nothing suspicious.
Hi,
I hit the same issue today, after the upgrade to -current snapshot [0].
This time I didn't manage to ssh into the server (connection refused)
but I have
an Internet access on my devices (the server is also a NAT router).
Previously, I was set `machdep.kbdreset=2` in `/etc/sysctl.conf` and did
CTRL+ALT+DEL
which sent me into ddb prompt [1].
Stopped at db_enter+0x5: popq %rbp
ddb{0}>
The kernel didn't panic so I did `boot dump` which lead to panic [2]
ddb{0}> boot dump
syncing disks... panic: kernel diagnostic assertion "p->p_wchan ==
NULL" failed
file "/usr/src/sys/kern/kern_sched.c", line 328
You can find more screen pictures (ps, trace, show registers, boot
reboot(which shows another panic)) here [3]
Let me know if you need more info or I can do anything, which will help
with debugging this issue.
[0] https://hodor.bsdbg.net/freeze/slide_3.html
[1] https://hodor.bsdbg.net/freeze/slide_2.html
[2] https://hodor.bsdbg.net/freeze/slide_1.html
[3] https://hodor.bsdbg.net/freeze/
