Double panic -- KSE and /dev/null???

[Daniel C. Sobral]

The /dev/null panic was masked by the KSE panic, unfortunately. All I 
have is the message:

panic: No strategy on dev null responsible for buffer 0xc78084f8

phk, I'm cc'ing you because I'm not sure if this is related to your 
devfs work or not. You'll note I did *b*cc you, so you won't receive 
follow ups. :-)

Likewise, mark, /dev/null seems to be yours. :-)

Now, as for the KSE panic, which I have noticed has the pronounced 
tendency of appearing when dumping core, here it is:

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This GDB was configured as "i386-undermydesk-freebsd"...
panic: KSE not on run queue
panic messages:
---
panic: No strategy on dev null responsible for buffer 0xc78084f8


syncing disks, buffers remaining... 2230 2230 2230 2229 2229 2229 2229 
2229 panic: KSE not on run queue
Uptime: 50m29s
Dumping 255 MB
ata0: resetting devices ..
done
  16 32 48 64 80 96 112 128 144 160 176[CTRL-C to abort] [CTRL-C to 
abort] [CTRL-C to abort] [CTRL-C to abort] [CTRL-C to abort] [CTRL-C to 
abort]  192 208 224 240
---
Reading symbols from /boot/kernel/snd_cmi.ko...done.
Loaded symbols for /boot/kernel/snd_cmi.ko
Reading symbols from /boot/kernel/snd_pcm.ko...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  doadump () at /usr/src/sys/kern/kern_shutdown.c:238
238             dumping++;
(kgdb) bt full
#0  doadump () at /usr/src/sys/kern/kern_shutdown.c:238
No locals.
#1  0xc01e7353 in boot (howto=260) at /usr/src/sys/kern/kern_shutdown.c:370
No locals.
#2  0xc01e769b in panic () at /usr/src/sys/kern/kern_shutdown.c:543
         td = (struct thread *) 0xc0ecbab0
         bootopt = 260
         newpanic = 0
         buf = "KSE not on run queue\0ll responsible for buffer 
0xc78084f8\n", '\0' <repeats 197 times>
#3  0xc01fa832 in sched_rem (ke=0xc0ecd300) at 
/usr/src/sys/kern/sched_4bsd.c:639
No locals.
#4  0xc01ecfd3 in adjustrunqueue (td=0xc0ecd300, newpri=180) at 
/usr/src/sys/kern/kern_switch.c:295
         kg = (struct ksegrp *) 0xc0ed0780
         ke = (struct kse *) 0xc0ecd300
#5  0xc01fa580 in sched_prio (td=0xc26434c0, prio=180 '´') at 
/usr/src/sys/kern/sched_4bsd.c:545
No locals.
#6  0xc01f9fe9 in schedcpu (arg=0x0) at /usr/src/sys/kern/sched_4bsd.c:337
         loadfac = 1962
         td = (struct thread *) 0xc26434c0
         p = (struct proc *) 0xc270d3c0
         ke = (struct kse *) 0x0
         kg = (struct ksegrp *) 0xc0ed0780
         realstathz = 128
         awake = 1
#7  0xc01f69ec in softclock (dummy=0x0) at 
/usr/src/sys/kern/kern_timeout.c:195
         c_func = (void (*)(void *)) 0xc01f9e30 <schedcpu>
         c_arg = (void *) 0x0
         c_flags = 14
         c = (struct callout *) 0x0
         bucket = (struct callout_tailq *) 0xc771ce90
         curticks = 3029150
         steps = 14
#8  0xc01c59c2 in ithread_loop (arg=0xc0ec8f00) at 
/usr/src/sys/kern/kern_intr.c:537
         ithd = (struct ithd *) 0xc0ec8f00
         ih = (struct intrhand *) 0xc0ec0440
         td = (struct thread *) 0xc0ecbab0
         p = (struct proc *) 0xc0eca780
---Type <return> to continue, or q <return> to quit---
#9  0xc01c49b0 in fork_exit (callout=0xc0ec0440, arg=0x0, frame=0x0) at 
/usr/src/sys/kern/kern_fork.c:768
         td = (struct thread *) 0x0
         p = (struct proc *) 0xc0ec8f00

Further information available upon request.


-- 
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

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