klogd issue

["Jurzitza, Dieter" <DJurzitza@harmanbecker.com>]

Dear listmembers,
quite a while ago I detected an error with klogd (I didn't know at that time).
When in SMP-mode, klogd gets an issue with the getsyms call on my U60.

It shows as follows (on boot):
Dec  9 09:59:02 oekalux09 syslogd 1.4.1#16: restart.
Dec  9 09:59:02 oekalux09 kernel: klogd 1.4.1#16, log source = /proc/kmsg started.
Dec  9 09:59:02 oekalux09 kernel: Inspecting /boot/System.map-2.4.26
Dec  9 09:59:03 oekalux09 kernel: Loaded 14218 symbols from /boot/System.map-2.4.26.
Dec  9 09:59:03 oekalux09 kernel: Symbols match kernel version 2.4.26.
Dec  9 09:59:03 oekalux09 kernel: Loaded 33 symbols from 3 modules.


with SMP:
Dec  9 09:18:14 oekalux09 syslogd 1.4.1#16: restart.
Dec  9 09:18:14 oekalux09 kernel: klogd 1.4.1#16, log source = /proc/kmsg started.
Dec  9 09:18:14 oekalux09 kernel: Inspecting /boot/System.map-2.4.26-SMP
Dec  9 09:18:15 oekalux09 kernel: Loaded 14411 symbols from /boot/System.map-2.4.26-SMP.
Dec  9 09:18:15 oekalux09 kernel: Symbols match kernel version 2.4.26.
Dec  9 09:18:15 oekalux09 kernel: Error reading kernel symbols - Cannot allocate memory 

Tracing deeper into this I found the erratic behaviour in the ksym_mod.c - file of sysklogd. The call to getsyms on line 238 what is actually a call to get_kernel_syms is returning a negative value. This is especially strange because the man-page of get_kernel_syms tells me that:

"Returns  the  number  of  symbols returned.  There is no possible error return."

However, I think this is not the function that is called but some kernel function that actually returns the value. I found something in modules.c, however, the #define that can be found there does not fit, neither does the sys_ before it.

I am definitively lost here and appreciate any inputs.

Many thanks for your inputs,
take care




Dieter

-- 
________________________________________________

HARMAN BECKER AUTOMOTIVE SYSTEMS

Dr.-Ing. Dieter Jurzitza
Manager Hardware Systems
   System Development

Industriegebiet Ittersbach
Becker-Göring Str. 16
D-76307 Karlsbad / Germany

Phone: +49 (0)7248 71-1577
Fax:   +49 (0)7248 71-1216
eMail: DJurzitza@harmanbecker.com
Internet: http://www.becker.de
 


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