linux-kernel - Re: "Switch !O_CREAT case to use of do

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Message-ID: <20100306175917.GD30031@ZenIV.linux.org.uk>
Date:	Sat, 6 Mar 2010 17:59:18 +0000
From:	Al Viro <viro@...IV.linux.org.uk>
To:	walt <w41ter@...il.com>
Cc:	linux-kernel@...r.kernel.org
Subject: Re: "Switch !O_CREAT case to use of do_last()" causes segfault in
 glibc

On Sat, Mar 06, 2010 at 09:43:42AM -0800, walt wrote:
> Hi Al,
> commit 1f36f774b22a0ceb7dd33eca626746c81a97b6a5
> Author: Al Viro <viro@...iv.linux.org.uk>
> Date:   Sat Dec 26 10:56:19 2009 -0500
> 
>     Switch !O_CREAT case to use of do_last()
> 
>     ... and now we have all intents crap well localized
> 
> This commit is triggering a segfault when I try to open a spreadsheet in
> openoffice:
> 
> Program received signal SIGSEGV, Segmentation fault.
> 0x00007ffff6d13129 in __readdir (dirp=0x0) at ../sysdeps/unix/readdir.c:45
> 45      ../sysdeps/unix/readdir.c: No such file or directory.
>         in ../sysdeps/unix/readdir.c
> (gdb) bt
> #0  0x00007ffff6d13129 in __readdir (dirp=0x0) at ../sysdeps/unix/readdir.c:45
> #1  0x00007ffff1dc58b0 in ?? () from /usr/lib/libicuuc.so.42
> #2  0x00007ffff1dc591d in ?? () from /usr/lib/libicuuc.so.42
> #3  0x00007ffff1dc5d7e in uprv_tzname_4_2 () from /usr/lib/libicuuc.so.42
> #4  0x00007fffd7f73601 in icu_4_2::TimeZone::initDefault() () from /usr/lib/libicui18n.so.42
> #5  0x00007fffd7f738c5 in icu_4_2::TimeZone::createDefault() () from /usr/lib/libicui18n.so.42
> #6  0x00007fffd7f6e5c9 in icu_4_2::Calendar::createInstance(icu_4_2::Locale const&, UErrorCode&) ()
>    from /usr/lib/libicui18n.so.42

Very interesting.  Could you give the relevant parts of strace (or reproduce
it with something less monumental than openoffice)?
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