[lfs-dev] 'ls -l' segfaults on Athlon XP

Pierre Labastie pierre.labastie at neuf.fr
Sun Feb 22 10:00:42 PST 2015


Le 22/02/2015 17:08, Christoph Feikes a écrit :
> Hello,
> 
> I'm trying to build LFS according to current 7.7-rc1.
> 'ls -l' on a non-empty directory segfaults on Athlon XP as soon as a ls
> linked against glibc-2.21 gets installed. When using glibc-2.20 on the
> Athlon, all other parameters unchanged, no segfault occurs.
> 
> log entry: kernel: ls[15030]: segfault at 0 ip b76652a4 sp bfe82570
> error 6 in libc-2.21.so[b75ed000+1af000]
> 
> The segfault happens, when in coreutils-8.23/src/ls.c the function
> align_nstrftime() (line 3663) gets executed, the pointer pfmt returned
> from a call to mempcpy() with 0 count to copy points to a bogus address,
> and stpcpy() is called with this pointer as a destination address (lines
> 3678, 3679).
> 
> I'm suspecting a bug in glibc, specifically in the area of
> sysdeps/i386/i686/multiarch, but so far I wasn't able to find it. I
> admit I hardly know intel assembler, especially not the unix version.
> 
> Kind regards,
> Christoph
> 
> 
> 
There seem to be a patch on archlinux, which touches exactly the area you say:
https://projects.archlinux.org/svntogit/packages.git/tree/trunk/glibc-2.21-roundup.patch?h=packages/glibc
sorry for the broken line.
Would it solve your problem?
Pierre


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