[Fwd: kernel symbol problem, 2.1.108ac2]

Neil Conway (nconway.list@ukaea.org.uk)
Fri, 10 Jul 1998 18:04:46 +0000

OK, some of what I just wrote is rubbish, but some is actually OK. The
bit that's bullshit is the inconsistent versioning, cos I forgot that I
had recompiled with the Vortex IN the kernel due to it not wanting to
load as a module, so the symbols that do have versioning but not smp are
wrong cos that module wasn't compiled with SMP.

However, the bits that are buggered up for real are the global_cli,
__global_restore_flags, and __global_save_flags, as for some reason
these don't get ANY versioning info attached in several modules, even
though the other symbols do and even though /proc/ksyms does... argh.

Also, the klogd problem stands! I guess it could be vaguely related,
but I really haven't a clue ;-)

Neil

Neil Conway wrote:
>
> I have compiled with kernel module versioning on, so /proc/ksyms has
> stuff like:
> c010b7a8 __global_cli_Rsmp_64576b05
> c010b8dc __global_sti_Rsmp_da4456dd
> c010b910 __global_save_flags_Rsmp_5d902e96
> c010b94c __global_restore_flags_Rsmp_54dd1dcb
>
> in it.
>
> However, the modules don't seem to agree with this: modprobe 3c59x.o
> gives:
> /lib/modules/2.1.108/net/3c59x.o: unresolved symbol
> __global_restore_flags
> /lib/modules/2.1.108/net/3c59x.o: unresolved symbol
> check_region_R522f4d72
> /lib/modules/2.1.108/net/3c59x.o: unresolved symbol jiffies_R0da02d67
>
> so it looks like stuff is really inconsistent here (some of the symbols
> have version stuff on them and others don't. I can't figure out why...
>
> Also, recently I've been getting intermittent (since 2.1.106) problems
> with klogd, which behaves differently even on two consecutive boots with
> the same kernel, but often does this:
>
> Jul 10 17:57:09 fuslwa syslogd 1.3-3: restart.
> Jul 10 17:57:09 fuslwa kernel: klogd 1.3-3, log source = /proc/kmsg
> started.
> Jul 10 17:57:09 fuslwa kernel: Loaded 4879 symbols from
> /usr/src/linux/System.map.
> Jul 10 17:57:09 fuslwa kernel: Symbols match kernel version 2.1.108.
> Jul 10 17:57:09 fuslwa kernel: Error seeking in /dev/kmem
> Jul 10 17:57:09 fuslwa kernel: Error adding kernel module table entry.
> Jul 10 17:57:09 fuslwa kernel: Linux version 2.1.108
> (root@localhost.localdomain) (gcc version 2.7.2.3) #4 SMP Fri Jul 10
> 17:45:42 BST 1998
>
> Again, I'm puzzled. I have checked for klogd/syslogd in the 2.1
> requirements and it ain't there, so I guess that can't be it (i.e. my
> version should be new enough).
>
> Ideas appreciated...
> Neil
> neil.conway@ukaea.org.uk

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