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    SubjectRe: bugs/regressions: report in LKML or in bugzilla?
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    On Tue, 2010-12-07 at 17:12 +0100, Eric Dumazet wrote:
    > 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 ?
    [...]

    For mere humans, the range is not quite os obvious. Which is why this
    has been fixed in net-2.6 (as noted on that bug report now).

    Ben.

    --
    Ben Hutchings, Senior Software Engineer, Solarflare Communications
    Not speaking for my employer; that's the marketing department's job.
    They asked us to note that Solarflare product names are trademarked.

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