lkml.org 
[lkml]   [2017]   [Dec]   [7]   [last100]   RSS Feed
Views: [wrap][no wrap]   [headers]  [forward] 
 
Messages in this thread
    /
    From
    Date
    SubjectRe: [PATCH] mm/slab: Do not hash pointers when debugging slab
    On Thu, Dec 7, 2017 at 3:13 AM, Christopher Lameter <cl@linux.com> wrote:
    > On Thu, 7 Dec 2017, Geert Uytterhoeven wrote:
    >
    >> If CONFIG_DEBUG_SLAB/CONFIG_DEBUG_SLAB_LEAK are enabled, the slab code
    >> prints extra debug information when e.g. corruption is detected.
    >> This includes pointers, which are not very useful when hashed.
    >>
    >> Fix this by using %px to print unhashed pointers instead.
    >
    > Acked-by: Christoph Lameter <cl@linux.com>
    >
    > These SLAB config options are only used for testing so this is ok.

    Most systems use SLUB so I can't say how common CONFIG_DEBUG_SLAB is.
    (Though, FWIW with SLUB, CONFIG_SLUB_DEBUG is very common.)

    -Kees

    --
    Kees Cook
    Pixel Security

    \
     
     \ /
      Last update: 2017-12-07 19:44    [W:2.719 / U:0.344 seconds]
    ©2003-2020 Jasper Spaans|hosted at Digital Ocean and TransIP|Read the blog|Advertise on this site