2.6.17-mm3: segvs in modpost with out-of-tree modules

[Jeremy Fitzhardinge <jeremy@goop.org>]

I'm seeing SIGSEGVs in modpost when compiling the out-of-tree madwifi 
driver:

   /bin/sh: line 1: 3701 Segmentation fault scripts/mod/modpost -m -a
   -i /home/jeremy/hg/linux-2.6/Module.symvers -I
   /home/jeremy/svn/madwifi-ng/Modules.symvers -o
   /home/jeremy/svn/madwifi-ng/Modules.symvers vmlinux
   /home/jeremy/svn/madw ifi-ng/ath/ath_hal.o
   /home/jeremy/svn/madwifi-ng/ath/ath_pci.o /home/jeremy/svn/
   madwifi-ng/ath_rate/sample/ath_rate_sample.o
   /home/jeremy/svn/madwifi-ng/net8021 1/wlan.o
   /home/jeremy/svn/madwifi-ng/net80211/wlan_acl.o
   /home/jeremy/svn/madwif i-ng/net80211/wlan_ccmp.o
   /home/jeremy/svn/madwifi-ng/net80211/wlan_scan_ap.o
   /home/jeremy/svn/madwifi-ng/net80211/wlan_scan_sta.o
   /home/jeremy/svn/madwifi-ng/n et80211/wlan_tkip.o
   /home/jeremy/svn/madwifi-ng/net80211/wlan_wep.o /home/jeremy
   /svn/madwifi-ng/net80211/wlan_xauth.o

The backtrace is:

#0  0x4e8017da in strcmp () from /lib/libc.so.6
#1  0x080491a7 in export_no (s=0x0) at modpost.c:209
#2  0x0804b5c3 in read_dump (
   fname=0xbff5fa9d "/home/jeremy/svn/madwifi-ng/Modules.symvers", kernel=0)
   at modpost.c:1312
#3  0x0804b88b in main (argc=21, argv=0xbff5def4) at modpost.c:1390

I haven't really looked at yet, but I was hoping someone had already 
tracked it down.

   J
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