[Crash-utility] Re: Crash-utility Digest, Vol 31, Issue 10

[Durga Prasad]

Hi,

I could not find kernel-debuginfo for SLES 9 kernels.
What do I do ?


On 4/16/08, crash-utility-request at redhat.com <
crash-utility-request at redhat.com> wrote:
>
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> Today's Topics:
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>   1. x86_64 crash (cross-platform) (Cliff Wickman)
>   2. Re: x86_64 crash (cross-platform) (Chip Coldwell)
>
>
> ----------------------------------------------------------------------
>
> Message: 1
> Date: Tue, 15 Apr 2008 15:34:38 -0500
> From: Cliff Wickman <cpw at sgi.com>
> Subject: [Crash-utility] x86_64 crash (cross-platform)
> To: anderson at redhat.com
> Cc: crash-utility at redhat.com
> Message-ID: <E1JlrrS-0002i7-Oe at eag09.americas.sgi.com>
>
>
> Hi Dave,
>
> We've recently seen lcrash fail with a floating point exception
> very early in initialization.
> Seems to be a binary compiled under one distribution and then
> executed on another.
>
> And the solution seems to be the -Wl,--hash-style=both option.
>
> Have others reported this?
> There must be a cleaner solution than in my notes below.   That is,
> an easier way to link with this option.
>
> Thanks.
> -Cliff
> --------------------------------------------------------------------------
>
> To make crash so that it runs under SLES or RedHat:
> cd /home/estes02/cpw/crash-4.0-6.2
> make
>
> Compile it on a SLES system:
> good:
> cpw at spandau:/tmp/cpw/crash-4.0-6.2> readelf -S crash | grep -A1 hash
> [ 4] .hash             HASH             0000000000400290  00000290
>       0000000000009490  0000000000000004   A       5     0     8
> on a RHEL:
> bad:
> cpw at alcatraz crash-4.0-6.2 $ readelf -S crash | grep -A1 hash
> [ 3] .gnu.hash         GNU_HASH         0000000000400240  00000240
>       000000000000a040  0000000000000000   A       4     0     8
> OR
>
> vi gdb-6.1/gdb/configure
> ---
> if test "$GCC" = yes; then
>    CFLAGS="-g -O2 -Wl,--hash-style=both"
> else
>    CFLAGS="-g -Wl,--hash-style=both"
> fi
> else
> if test "$GCC" = yes; then
>    CFLAGS="-O2 -Wl,--hash-style=both"
> else
>    CFLAGS="-Wl,--hash-style=both"
> ---
> make
> readelf -S crash | grep -A1 hash   (should show GNU form)
>
> cpw at alcatraz crash-4.0-6.2 $ readelf -S crash | grep -A1 hash
> [ 3] .hash             HASH             0000000000400240  00000240
>       0000000000009490  0000000000000004   A       5     0     8
> [ 4] .gnu.hash         GNU_HASH         00000000004096d0  000096d0
>       000000000000a040  0000000000000000   A       5     0     8
> ------------------------------------------------------------------------
>
>
>
> ------------------------------
>
> Message: 2
> Date: Tue, 15 Apr 2008 16:43:30 -0400 (EDT)
> From: Chip Coldwell <coldwell at redhat.com>
> Subject: Re: [Crash-utility] x86_64 crash (cross-platform)
> To: "Discussion list for crash utility usage,   maintenance and
>        development" <crash-utility at redhat.com>
> Message-ID:
>        <alpine.LRH.1.00.0804151642150.32524 at bogart.boston.redhat.com>
> Content-Type: TEXT/PLAIN; charset=US-ASCII
>
> On Tue, 15 Apr 2008, Cliff Wickman wrote:
>
> >
> > Hi Dave,
> >
> > We've recently seen lcrash fail with a floating point exception
> > very early in initialization.
> > Seems to be a binary compiled under one distribution and then
> > executed on another.
> >
> > And the solution seems to be the -Wl,--hash-style=both option.
> >
> > Have others reported this?
>
> This isn't specific to crash; it's the result of a change in the
> Linux/glibc ABI.  Specifically, the new ABI has a .hash.gnu section
> whereas the old one has .hash.  Your linker option above causes both
> sections to be included, so that the old dynamic loader can load a
> binary built with a new toolchain.
>
> Chip
>
> --
> Charles M. "Chip" Coldwell
> Senior Software Engineer
> Red Hat, Inc
> 978-392-2426
>
> GPG ID:  852E052F
> GPG FPR: 77E5 2B51 4907 F08A 7E92  DE80 AFA9 9A8F 852E 052F
>
>
>
> ------------------------------
>
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>
> End of Crash-utility Digest, Vol 31, Issue 10
> *********************************************
>



-- 

---------
Keep dreaming, for dreams are the precursors of things to come real.. @!#$
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