lkml.org 
[lkml]   [2008]   [May]   [28]   [last100]   RSS Feed
Views: [wrap][no wrap]   [headers]  [forward] 
 
Messages in this thread
/
Date
From
SubjectRe: [PATCH] Re: bad pmd ffff810000207238(9090909090909090).

* Hugh Dickins <hugh@veritas.com> wrote:

> [PATCH] x86: fix bad pmd ffff810000207xxx(9090909090909090)
>
> OGAWA Hirofumi and Fede have reported rare pmd_ERROR messages:
> mm/memory.c:127: bad pmd ffff810000207xxx(9090909090909090).
>
> Initialization's cleanup_highmap was leaving alignment filler behind
> in the pmd for MODULES_VADDR: when vmalloc's guard page would occupy a
> new page table, it's not allocated, and then module unload's vfree
> hits the bad 9090 pmd entry left over.

applied, nice catch!

Ingo


\
 
 \ /
  Last update: 2008-05-28 20:43    [W:0.046 / U:0.244 seconds]
©2003-2020 Jasper Spaans|hosted at Digital Ocean and TransIP|Read the blog|Advertise on this site