Re: KSE panic

On Tue, 20 May 2003, Daniel C. Sobral wrote:

> I'm still getting this KSE panic. I'd like it to be added to 5.2's TODO 
> list.

I'm seeing some sporadic panics bu tnever when I'm looking for them.
My panics are not teh same as yours though.

Can you send me your config file?
and what do you do to make them happen


> 
> I haven't tested the system without ACPI. First, as I say, because the 
> panic is difficult to reproduce. Second, because it didn't happen three 
> months ago, so it's unlikely to be a bug in my computer's ACPI, but a 
> bug in code. Therefore, it should be fixed, not masked.
> 
> This time I don't have a full backtrace because I had just compiled a 
> new kernel. Anyone knows how do I get kernel.debug installed right along 
> all the rest of the stuff? :-(

In your config file, add:
makeoptions     DEBUG="-g"

or use 
'config -g'

then when you have a core file..

gdb -k {build_directory}/kernel.debug /var/crash/vmcore.0

you don't need it installed, just made.

> 
> I don't know what the computer was doing, exactly, at the time. I was 
> running a full system upgrade. I believe it was running portupgrade at 
> the time.
> 
> Trace below...
> 
> GNU gdb 5.2.1 (FreeBSD)
> Copyright 2002 Free Software Foundation, Inc.
> GDB is free software, covered by the GNU General Public License, and you are
> welcome to change it and/or distribute copies of it under certain 
> conditions.
> Type "show copying" to see the conditions.
> There is absolutely no warranty for GDB.  Type "show warranty" for details.
> This GDB was configured as "i386-undermydesk-freebsd"...(no debugging 
> symbols found)...
> panic: KSE not on run queue


ok, so the KSE panic occurred first it would seem.

pitty the stack trace isn't available..




> panic messages:
> ---
> panic: No strategy on dev null responsible for buffer 0xc774e418
> 
> 
> syncing disks, buffers remaining... panic: KSE not on run queue
> Uptime: 7h11m18s
> Dumping 255 MB
> ata0: resetting devices ..
> done
> ad0: timeout waiting for DRQata0: resetting devices ..
> ata0-slave: timeout waiting for cmd=ec s=00 e=00
> ata0-slave: ATA identify failed
> done
>   16 32 48 64 80 96 112 128 144 160 176 192 208 224 240
> ---
> Reading symbols from /boot/kernel/snd_cmi.ko...(no debugging symbols 
> found)...done.
> Loaded symbols for /boot/kernel/snd_cmi.ko
> Reading symbols from /boot/kernel/snd_pcm.ko...(no debugging symbols 
> found)...done.
> Loaded symbols for /boot/kernel/snd_pcm.ko
> Reading symbols from 
> /usr/obj/usr/src/sys/DCS/modules/usr/src/sys/modules/mac_biba/mac_biba.ko.debug...done.
> Loaded symbols for 
> /usr/obj/usr/src/sys/DCS/modules/usr/src/sys/modules/mac_biba/mac_biba.ko.debug
> Reading symbols from 
> /usr/obj/usr/src/sys/DCS/modules/usr/src/sys/modules/mac_mls/mac_mls.ko.debug...done.
> Loaded symbols for 
> /usr/obj/usr/src/sys/DCS/modules/usr/src/sys/modules/mac_mls/mac_mls.ko.debug
> Reading symbols from 
> /usr/obj/usr/src/sys/DCS/modules/usr/src/sys/modules/acpi/acpi.ko.debug...done.
> Loaded symbols for 
> /usr/obj/usr/src/sys/DCS/modules/usr/src/sys/modules/acpi/acpi.ko.debug
> Reading symbols from /boot/kernel/green_saver.ko...done.
> Loaded symbols for /boot/kernel/green_saver.ko
> Reading symbols from 
> /usr/obj/usr/src/sys/DCS/modules/usr/src/sys/modules/linux/linux.ko.debug...done.
> Loaded symbols for 
> /usr/obj/usr/src/sys/DCS/modules/usr/src/sys/modules/linux/linux.ko.debug
> #0  0xc01e6cfb in doadump ()
> (kgdb) bt full
> #0  0xc01e6cfb in doadump ()
> No symbol table info available.
> #1  0xc01e7323 in boot ()
> No symbol table info available.
> #2  0xc01e766b in panic ()
> No symbol table info available.
> #3  0xc01fa802 in sched_rem ()
> No symbol table info available.
> #4  0xc01ecfa3 in adjustrunqueue ()
> No symbol table info available.
> #5  0xc01fa550 in sched_prio ()
> No symbol table info available.
> #6  0xc01f9fb9 in schedcpu ()
> No symbol table info available.
> #7  0xc01f69bc in softclock ()
> No symbol table info available.
> #8  0xc01c5992 in ithread_loop ()
> No symbol table info available.
> #9  0xc01c4980 in fork_exit ()
> No symbol table info available.
> 
> 
> -- 
> Daniel C. Sobral                   (8-DCS)
> Gerencia de Operacoes
> Divisao de Comunicacao de Dados
> Coordenacao de Seguranca
> VIVO Centro Oeste Norte
> Fones: 55-61-313-7654/Cel: 55-61-9618-0904
> E-mail: Daniel.Capo_at_tco.net.br
>          Daniel.Sobral_at_tcoip.com.br
>          dcs_at_tcoip.com.br
> 
> Outros:
> 	dcs_at_newsguy.com
> 	dcs_at_freebsd.org
> 	capo_at_notorious.bsdconspiracy.net
> 
> Have you noticed that all you need to grow healthy, vigorous grass is a
> crack in your sidewalk?
> 
>