topic Re: System Crashed - Kernel Panic in Operating System - HP-UX

System Crashed - Kernel Panic

Syed Salman Mansoor — Thu, 22 Jan 2009 16:45:41 GMT

I have HP-UX B.11.23 U ia64 and Oracle 10g running on it. I got error Kernel Panic error. After restarting I found crash dumb, copied it to other HP UX machine and then analyzed using Q4. I am geeting this message on ANA.
Unable to add all swap from
device: /dev/vg00/lv13.
8192 remaining chunks in swap table, need 21504.
Increase the tunable parameter swchunk to 4736 or more
and re-configure your system.
Bad News: Cannot use the Kernel Stack when interrupted on the ICS.

and event 0 shows

stack trace for event 0
crash event was a panic
The reason for stopping stack unwind -
next ip equals 0x400000000150eb60 would no longer be in kernel space

panic_save_regs_switchstack+0x110
panic+0x380
bad_news+0x950
bubbledown+0x0
tcp_rput+0x22a0
str_spu_sw_isr+0x1e0
soft_intr_handler+0x220
external_interrupt+0x3b0
bubbledown+0x0
_u_default+0x73f8b00

Can somebody tell me the cause and remedy? I think I need to add more swap space but I am not sure it is the reason. It have occured twice this month.

Re: System Crashed - Kernel Panic

Don Morris_1 — Thu, 22 Jan 2009 17:09:48 GMT

You do need to increase swchunk to use all your swap space (otherwise, why have it configured) as directed -- but no, this would not cause a kernel fault panic.

It looks like JAGaf71680 to me, so you should check to see if you have PHNE_34671 or one of its successors. [They all seem to have the Warning status, unfortunately -- so consider your options here. Given there's a workaround to the Warning case, and the panic is being hit regularly -- I would think you'd want to take the patch and apply the workaround.

Re: System Crashed - Kernel Panic

Syed Salman Mansoor — Thu, 22 Jan 2009 18:17:33 GMT

Thanks A Lot. As I am not in office so I will check this first thing in morning. and will try to increase the swchunk also (If I can find how :))
This patch will not effect any other thing? as my Live database is running on this machine and it is stored on local harddisks. So it is very risky for me to do anything on this machine.

Re: System Crashed - Kernel Panic

Syed Salman Mansoor — Thu, 22 Jan 2009 18:33:28 GMT

My stack trace is given below. This might also help you understand actual problem.
panic: Bad News!

Stack Trace:
IP Function Name
0xe000000000c7f4e0 bad_news+0x950
0xe000000000c7e500 bubbledown
0xe0000000005f8800 tcp_rput+0x22a0
0xe0000000005ade10 ip_wput_ioctl+0x5d0
0xe00000000083ed80 soft_intr_handler+0x220
0xe00000000083d510 external_interrupt+0x3b0
0xe000000000c7e500 bubbledown
0x0000000000000000
0x00000000000000c0 +0xc0
End of Stack Trace

Re: System Crashed - Kernel Panic

Syed Salman Mansoor — Mon, 02 Feb 2009 05:24:03 GMT

I am upgrading latest patches.