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  • [gentoo-user] repair of a seg-faulting bin-utils

    From Corbin@21:1/5 to All on Wed Oct 26 18:20:01 2022
    Help!

    The last update I did built/installed bin-uitls. It is now producing seg-faults. I forgot to make a quickpkg of the old bin-utils before
    upgrading.

    Added problem, dead optical drive. No cdrom/dvd or bluray.

    How can I fix this without having to reinstall from scratch?

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  • From Grant Edwards@21:1/5 to Corbin on Wed Oct 26 18:30:01 2022
    On 2022-10-26, Corbin <corbinbird@charter.net> wrote:
    Help!

    The last update I did built/installed bin-uitls. It is now producing seg-faults. I forgot to make a quickpkg of the old bin-utils before upgrading.

    The first thing I would do is run a RAM test overnight. IME,
    segfaulting binutils or gcc has usually been a hardware problem.

    --
    Grant

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  • From Rich Freeman@21:1/5 to grant.b.edwards@gmail.com on Wed Oct 26 20:40:01 2022
    On Wed, Oct 26, 2022 at 12:24 PM Grant Edwards
    <grant.b.edwards@gmail.com> wrote:

    On 2022-10-26, Corbin <corbinbird@charter.net> wrote:
    Help!

    The last update I did built/installed bin-uitls. It is now producing seg-faults. I forgot to make a quickpkg of the old bin-utils before upgrading.

    The first thing I would do is run a RAM test overnight. IME,
    segfaulting binutils or gcc has usually been a hardware problem.

    Bad disk is obviously another possible issue (saw that on a pi
    sdcard), but I'd definitely be testing that RAM. Really if you suspect
    bad RAM it is worth your trouble to just shut down ASAP and test that,
    because every minute with bad RAM is potentially corrupted files on
    your hard drive, and rework even if you have a good backup.

    Another possible issue is bad -march settings. That usually is an
    issue if you change your CPU and boot off of an existing hard drive.
    If you're going to upgrade your CPU you should rebuild all of @system
    (at least) with -march set to something very minimal. Don't assume
    that a newer CPU does everything an existing one does - they sometimes
    do drop instructions. You can set -mcpu to whatever you want, as a
    bad -mcpu will only cause minor performance issues.

    --
    Rich

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  • From Matt Connell@21:1/5 to Rich Freeman on Wed Oct 26 20:50:01 2022
    On Wed, 2022-10-26 at 14:37 -0400, Rich Freeman wrote:
    Another possible issue is bad -march settings.  That usually is an
    issue if you change your CPU and boot off of an existing hard drive.
    If you're going to upgrade your CPU you should rebuild all of @system
    (at least) with -march set to something very minimal.  Don't assume
    that a newer CPU does everything an existing one does - they sometimes
    do drop instructions.  You can set -mcpu to whatever you want, as a
    bad -mcpu will only cause minor performance issues.

    Further reading on this:

    https://wiki.gentoo.org/wiki/Safe_CFLAGS

    I've always used this as a reference for helping ensure make.conf is
    not only going to be well optimized, but produce reliable binaries.

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