Closed Jehops closed 4 years ago
I think you might not have KDB/DDB built in your kernel or some setting enabled causing it to auto reboot when it panics, preventing you from seeing anything.
You could try changing some sysctls to prevent the rebooting (debug.debugger_on_panic=1
I think or maybe kern.panic_reboot_wait_time
set to -1). Hopefully that might help you read the backtrace.
You also need an active dump device, such as a swap partition (but you can't have encrypted swap as a dump device, you can reuse the same partition but don't enable swap in that case). See man 8 dumpon
.
Here is a better image of the panic.
This looks like it should be fixed in stable/12: https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=242913
Thank you Mark. I will re-open if necessary.
If I ssh to a remote host and start firefox, I see a kernel panic. I took a video to try and capture the message that very briefly appears on the screen. The text is difficult to make out, but I think I see
That is my best attempt to type what I barely see from the fuzzy video frame, so there maybe errors. I wasn't able to see the stack backtrace well enough.
The is a Lenovo X220.
Here is the information requested from the wiki page:
Nothing shows up in
/var/crash
. Please let me know if I am missing any useful information.