propagate_priority panic

[Frode Nordahl]

On 7. jun. 2005, at 14.10, Xin LI wrote:

> Hi, Frode,
>
> 在 2005-06-07二的 09:32 +0200，Frode Nordahl写道：
>
>> Dear colleagues,
>>
> [snip]
>
>> db> trace
>> Tracing pid 86 tid 100089 td 0xc54a1e10
>> propagate_priority(c54a1e10,c08f3750,c54c6960,c0901ae0,c54a1e10) at
>> propagate_priority+0x7f
>> turnstile_wait(c56f6a80,c0901ae0,c54c6960) at turnstile_wait+0x2e1
>> _mtx_lock_sleep(c0901ae0,c54a1e10,0,0,0) at _mtx_lock_sleep+0xf9
>> nfsrv_rcv(c5b32b64,c5b5b580,1) at nfsrv_rcv+0x4e
>> sowakeup(c5b32b64,c5b32bb4) at sowakeup+0xad
>> udp_append(c5a8c870,c5c96810,c5a99200,1c,ee83dc60) at udp_append 
>> +0x158
>> udp_input(c5a99200,14,8e009fc3,0,0) at udp_input+0x5fb
>> ip_input(c5a99200) at ip_input+0x4f1
>> netisr_processqueue(c08f5718) at netisr_processqueue+0xa3
>> swi_net(0) at swi_net+0xf2
>> ithread_loop(c5455e00,ee83dd48) at ithread_loop+0x159
>> fork_exit(c0605048,c5455e00,ee83dd48) at fork_exit+0x75
>> fork_trampoline() at fork_trampoline+0x8
>> --- trap 0x1, eip = 0, esp = 0xee83dd7c, ebp = 0 ---
>>
>
> This looks like what I have been observed within a recent -CURRENT
> kernel, which indicates a bug that was fixed recently.
>
> Would you please try the patch here:
> http://www.freebsd.org/cgi/cvsweb.cgi/src/sys/kern/ 
> kern_switch.c.diff?r1=1.111&r2=1.112
>
> You can safely ignore failed patch of Hunk #1, but if Hunk #2 and/ 
> or #3
> has been failed, please let us know your ident /sys/kern/kern_switch.c
> output.

Running with this patch the system livelocks instead, I have the  
following trace from it:
Tracing pid 84 tid 100087 td 0xc54a7a80
kdb_enter(c0854f33) at kdb_enter+0x2b
siointr1(c55b8000) at siointr1+0xce
siointr(c55b8000) at siointr+0x5e
intr_execute_handlers(c53fb490,ee837b0c,4,ee837b5c,c07c3f53) at  
intr_execute_handlers+0x7d
lapic_handle_intr(34) at lapic_handle_intr+0x2e
Xapic_isr1() at Xapic_isr1+0x33
--- interrupt, eip = 0xc0617871, esp = 0xee837b50, ebp = 0xee837b5c ---
_mtx_lock_sleep(c090fac0,c54a7a80,0,0,0) at _mtx_lock_sleep+0xb9
nfsrv_rcv(c5ac7a20,c5c41c80,1) at nfsrv_rcv+0x4e
sowakeup(c5ac7a20,c5ac7a70) at sowakeup+0xad
udp_append(c5ac9870,c5c20810,caaae700,1c,ee837c60) at udp_append+0x158
udp_input(caaae700,14,8e009fc3,0,0) at udp_input+0x5fb
ip_input(caaae700) at ip_input+0x4f1
netisr_processqueue(c09036f8) at netisr_processqueue+0xa3
swi_net(0) at swi_net+0xf2
ithread_loop(c5495000,ee837d48) at ithread_loop+0x159
fork_exit(c060bb38,c5495000,ee837d48) at fork_exit+0x75
fork_trampoline() at fork_trampoline+0x8
--- trap 0x1, eip = 0, esp = 0xee837d7c, ebp = 0 ---
db>

Any ideas?

Thanks!

Frode Nordahl
frode at nordahl.net