Bug 2177 – xfs-sources kernel does not work without SMP support

• Status: RESOLVED FIXED
• Product: Gentoo Linux

[Description Noah Gintis 2002-04-27 22:24:20 UTC]

xfs-sources kernel does not compile if "Processor type and features -> 
Symmetric multi-processing support" is disabled. In particular, /usr/src/linux-
2.4.18-xfs/kernel/ksyms.c gets a whole bunch of redefined symbols warnings all 
relating to CONFIG_SMP. Workaround: I just enabled SMP, even though I do not 
have a SMP system. Will this make the system run slower or unstably?

[Comment 1 Daniel Robbins (RETIRED) 2002-04-28 15:12:20 UTC]

Hmmm, I would back up your /usr/src/linux/.config and then do:

make mrproper
cp /path/to/.config .
make oldconfig
make dep
make bzImage

and see if it works.  Let me know either way.

[Comment 2 Per Wigren 2002-04-30 06:05:36 UTC]

This happened for me also during the initial installprocess 2 days ago. 
Enabling SMP made it work.
No possibility to add XFS-support to gentoo-sources? :)

[Comment 3 Craig Dooley 2002-04-30 09:51:23 UTC]

I found this out yesterday when doing a fresh 1.1 gcc3 build.  I didnt try the
smp thing.  I just cleared out the source and reemerged xfs-sources.  I thought
it may have been a problem with needing kernel headers to compile everything,
but them being different versions thatn whats in 2.4.18-xfs.  That worked for me.

[Comment 4 Noah Gintis 2002-04-30 14:20:47 UTC]

After doing a make mrproper, the kernel compiles. However, now when I do update-
modules, I get errors from depmod:

depmod: *** Unresolved symbols in /lib/modules/2.4.18-
xfs/kernel/net/ipv4/netfilter/ip_conntrack.o
depmod: *** Unresolved symbols in /lib/modules/2.4.18-
xfs/kernel/net/ipv4/netfilter/ip_tables.o
depmod: *** Unresolved symbols in /lib/modules/2.4.18-
xfs/kernel/net/ipv4/netfilter/ipt_REJECT.o
depmod: *** Unresolved symbols in /lib/modules/2.4.18-
xfs/kernel/net/ipv4/netfilter/iptable_filter.o
depmod: *** Unresolved symbols in /lib/modules/2.4.18-
xfs/kernel/net/ipv4/netfilter/iptable_mangle.o
depmod: *** Unresolved symbols in /lib/modules/2.4.18-
xfs/kernel/net/ipv4/netfilter/iptable_nat.o

I have 28 modules in that directory, but only those 6 fail. What does that 
mean? All of the files have the same timestamp, so they were created together. 
Is there anywhere I should look for garbage that needs to be deleted?

[Comment 5 Daniel Robbins (RETIRED) 2002-05-03 15:42:46 UTC]

Noah -- I'm not sure why you're getting those unresolved symbols, but the
XFS/SMP bug appears to be resolved so I'm closing this bug.