GNU bug report logs - #29886
tests/rm/rm-readdir-fail is failing with SIGBUS on Gentoo sparc

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From: Thomas Deutschmann <whissi <at> gentoo.org>
To: Paul Eggert <eggert <at> cs.ucla.edu>, 29886 <at> debbugs.gnu.org, Rolf Eike Beer <eike <at> sf-mail.de>
Subject: bug#29886: tests/rm/rm-readdir-fail is failing with SIGBUS on Gentoo sparc
Date: Wed, 11 Jul 2018 19:30:57 +0200

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On 2018-07-11 19:05, Paul Eggert wrote:
> Thomas Deutschmann wrote:
> 
>> Not sure if this is a kernel problem. Isn't test suite using
>> LD_PRELOAD to pull in additional libraries which could cause
>> such a breakage?
> 
> You're right, it could be a library problem. The test suite's LD_PRELOAD
> library just returns what the C library gives it, though. Perhaps
> LD_PRELOAD usage is messing up malloc on your platform, so that it
> returns improperly-aligned pointers? You might try something like the
> attached patch to see whether the C library is doing that.

Looks like we are on the right track, with your diff:

#0  0xf7e230fc in raise () from /lib/libc.so.6
#1  0xf7e25240 in abort () from /lib/libc.so.6
#2  0xf7fb4840 in readdir64 () from ./k.so


Adding Rolf (the Gentoo sparc user) to this mail conversation.


-- 
Regards,
Thomas Deutschmann / Gentoo Linux Developer
C4DD 695F A713 8F24 2AA1 5638 5849 7EE5 1D5D 74A5

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