lkml.org 
[lkml]   [2010]   [Dec]   [7]   [last100]   RSS Feed
Views: [wrap][no wrap]   [headers]  [forward] 
 
Messages in this thread
    /
    SubjectRe: bugs/regressions: report in LKML or in bugzilla?
    From
    Date
    Le mardi 07 décembre 2010 à 16:39 +0100, Martin Steigerwald a écrit :

    > A participant of a linux performance training I hold found a bug with
    > window scaling which did not receive any reply as well:
    >
    > Bug 20312 - System freeze with multiples of 32 in
    > /proc/sys/net/ipv4/tcp_adv_win_scale
    > https://bugzilla.kernel.org/show_bug.cgi?id=20312
    >

    User bug ?

    Documentation/networking/ip-sysctl.txt

    tcp_adv_win_scale - INTEGER
    Count buffering overhead as bytes/2^tcp_adv_win_scale
    (if tcp_adv_win_scale > 0) or bytes-bytes/2^(-tcp_adv_win_scale),
    if it is <= 0.
    Default: 2

    Given we use 32bit numbers, using values outside of [-31 ... 31] makes litle sense.

    We could add sysctl range limit, but user should not mess with
    /proc/sys/net/ipv4/parameters unless he knows what he is doing ?

    Almost all /proc/sys/net/ipv4/parameters dont have range limits and unexpected
    results with insane values feeded.

    An other way to freeze a machine being root is :

    halt


    --
    To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
    the body of a message to majordomo@vger.kernel.org
    More majordomo info at http://vger.kernel.org/majordomo-info.html
    Please read the FAQ at http://www.tux.org/lkml/

    \
     
     \ /
      Last update: 2010-12-07 21:53    [W:0.029 / U:31.496 seconds]
    ©2003-2016 Jasper Spaans. hosted at Digital OceanAdvertise on this site