On Wed, 28 Jun 2006 09:51:11 -0700
Jeremy Fitzhardinge <[email protected]> wrote:
> 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.
>
Not that I'm aware of.
if ((export = strchr(modname, '\t')) != NULL)
*export++ = '\0';
if `export' can be NULL,
crc = strtoul(line, &d, 16);
if (*symname == '\0' || *modname == '\0' || *d != '\0')
goto fail;
if (!(mod = find_module(modname))) {
if (is_vmlinux(modname)) {
have_vmlinux = 1;
}
mod = new_module(NOFAIL(strdup(modname)));
mod->skip = 1;
}
s = sym_add_exported(symname, mod, export_no(export));
that was a bad idea.
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