From: Jan Kratochvil <jan.kratochvil@redhat.com>
To: John Gilmore <gnu@toad.com>
Cc: gdb@sourceware.org, Martin Langhoff <martin.langhoff@gmail.com>
Subject: Re: Reading dynamic symbols from Linux core files?
Date: Fri, 16 Mar 2012 18:48:00 -0000 [thread overview]
Message-ID: <20120316184831.GA32437@host2.jankratochvil.net> (raw)
In-Reply-To: <201203161838.q2GIceWD010681@new.toad.com>
On Fri, 16 Mar 2012 19:38:40 +0100, John Gilmore wrote:
> Martin and Jan Kratochvil are currently chasing a problem with finding
> and getting "debug symbol" packages in Fedora 14
There may be some prelink related problem but I have no more ideas:
http://lists.fedoraproject.org/pipermail/devel/2012-March/164047.html
> I'm not sure exactly where in the code it should be trying to find the
> dynamic symbol table from the core file and extracting the symbols from it.
gdb/symfile-mem.c
bfd/elfcode.h NAME(_bfd_elf,bfd_from_remote_memory)
The problem usually was - at least in some Fedoras + RHELs - that vDSO has
overgrown 4KB. The loadable segment remained in the first 4KB part but
debugging symbols spanned more pages which led to bfd_from_remote_memory
cutting off the debug symbols. Recent Fedora patch for it is:
http://pkgs.fedoraproject.org/gitweb/?p=gdb.git;a=blob_plain;f=gdb-6.6-bfd-vdso8k.patch;hb=master
Regards,
Jan
next prev parent reply other threads:[~2012-03-16 18:48 UTC|newest]
Thread overview: 3+ messages / expand[flat|nested] mbox.gz Atom feed top
2012-03-16 18:39 John Gilmore
2012-03-16 18:48 ` Jan Kratochvil [this message]
2012-03-16 19:57 ` Martin Langhoff
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