Re: Linuxnode appears broken

From: Tomi Manninen (dysatay@mail.appsolut.at)
Date: Mon Oct 01 2001 - 15:27:25 EEST

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    On Sun, 30 Sep 2001, Roger Harris wrote:

    > After several months of trouble-free operation, my Linux node has suddenly
    > started behaving rather strangely. This problem started after there was a
    > couple of power failures (caused by the Electricity Board). After this, the
    > PC appeared to reboot OK and everything appears to work except the "routes"
    > command in the node. Can anyone suggest which files may have been
    > corrupted? I have checked the "node" binary and several others against
    > known working copies and they seem to be OK.
    >
    > Only the "R" (routes) command is affected. Other node commands such as "S",
    > "U", "N" work OK. If users connect to the node (via Netrom, AX25 or Telnet)
    > and issue the "R" command, they are immediately disconnected and the
    > following kernel errors appear in /var/log/messages.

    The routes command reads /proc/net/nr_neigh to get the info from kernel.
    You should be able to verify that this indeed causes the problem by
    reading it with eg. cat: cat /proc/net/nr_neigh

    This should cause a segmentation fault and the kernel oops as well.

    > Note the reference to the 3c503 module. I'm not sure of the significance of
    > this message, but the 3c503 ethernet card appears to be working OK.
    >
    > I am using SuSe Linux 7.0 with Kernel 2.2.16 and LinuxNode v0.3.0.
    >
    > Can anyone offer any clues or advice, other than rebuilding the system?

    This is really strange. I can't think of anything else but recompiling and
    installing the kernel + modules. Maybe one of the modules or the kernel
    binary itself is corrupted?

    -- 
    Tomi Manninen           Internet:  pojy.nvlgoxf@paranova.dk
    OH2BNS                  AX.25:     terhi.victor@logonet.com
    KP20ME04                Amprnet:   xkm@adobe.com
    

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