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    SubjectRe: /proc-tools hang under 2.3.22
    On 18 Oct 1999, Kjetil Torgrim Homme wrote:

    >Tools like top and ps from ps-99.4.14 (build 17 from SuSE) hang hard
    >when run (ie. won't be killed by -9). Of course, I have init-scripts

    I fixed it some minute ago (sorry I overlooked a copy-user call while
    fixing assorted races in /proc/):

    ftp://ftp.*.kernel.org/pub/linux/kernel/people/andrea/patches/v2.3/2.3.22/proc-deadlock.gz

    >that it can't find support in the kernel. I see others get it to work
    >if they compile it into the kernel. I'm running ppp 2.3.10. Do I
    >have to upgrade some tools?

    Yes, have a look at Documentation/Changes

    Note also that 2.3.22 has a deadlock condition the TCP/IP code (precisely
    in /proc/net/tcp) that may lead to process not killable too (I triggered
    it the first time while running pppstats -w 1).

    I fixed such network deadlock too some week ago; this is my fix that will
    go fine on the top of 2.3.22:

    ftp://ftp.*.kernel.org/pub/linux/kernel/people/andrea/patches/v2.3/2.3.22/patches/v2.3/2.3.18ac7/netlockup-2.gz

    Andrea


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