problem with linux 2.6.11 and sa

From: George Georgalis (georgalis_at_gmail.com)
Date: 03/03/05

  • Next message: Nishanth Aravamudan: "[PATCH] kernel/timer: fix msleep_interruptible() comment" 
    Date:	Thu, 3 Mar 2005 13:57:28 -0500
To: linux-kernel@vger.kernel.org

    I recall a problem a while back with a pipe from
    /proc/kmsg that was sent by root to a program with a
    user uid. The fix was to run the logging program as
    root. Has that protected pipe method been extended
    since 2.6.8.1?

    I'm very defiantly seeing a problem with the 2.6.11
    kernel and my spamassassin setup. However, it's not
    clear exactly where the problem is, seems like sa
    but it might be 2.6.11 with daemontools + qmail +
    QMAIL_QUEUE.

    A sure sign of it is no logs (with debug) for
    remote sa connections which score "0/0" and correct
    operation with local "cat spam.txt | spamc -R"; fix
    is to use the older kernel.

    SA has stopped stdout logging completely with 2.6.11
    in addition to the all pass score. But the message
    seems to go through my temp queue (for testing) and
    sent on to my local MDA. I'm not sure if it's a sa
    problem with the kernel or the new kernel doing
    something new with pipes from tcp connections.
    Maybe the new kernel is not making files available
    (eg 0 bytes), until the writing pipe is closed?
    That would make my SA test a zero byte file, which
    would pass, close, become full, and the file piped
    to local MDA is full? ...humm then I'd get a score
    of "0/5"... this sounds like a SA problem with the
    new kernel, ideas?

    // George 

    -- 
George Georgalis, systems architect, administrator Linux BSD IXOYE
http://galis.org/george/ cell:646-331-2027 mailto:george@galis.org
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