[lkml]   [2011]   [Dec]   [15]   [last100]   RSS Feed
Views: [wrap][no wrap]   [headers]  [forward] 
Messages in this thread
    SubjectRe: [PATCH] Fix for binary_sysctl() memory leak
    On Thu, Dec 15, 2011 at 2:44 PM, Andrew Morton
    <> wrote:
    > OK.  Please resend with a new changelog?

    All right. Will do as a reply to this (I'll add the same explanation
    as in my previous email).

    > The bug surprises me - it seems that it makes it trivial for userspace
    > to cause leaking of mad amounts of kernel memory, which would cause the
    > bug to be found and fixed quickly.
    > Is it a recent regression, or does the bug trigger only in weird
    > circumstances, or what?

    As far as I can tell, the bug was introduced in v2.6.33-rc1 by commit

    It's probably not common because people use sysctl mainly at boot
    time, and/or don't use the deprecated binary variant of it anymore.
    But yes, it is trivial to exploit...

    Michel "Walken" Lespinasse
    A program is never fully debugged until the last user dies.
    To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
    the body of a message to
    More majordomo info at
    Please read the FAQ at

     \ /
      Last update: 2011-12-16 00:01    [W:0.023 / U:1.268 seconds]
    ©2003-2016 Jasper Spaans. hosted at Digital OceanAdvertise on this site