https://github.com/torvalds/linux
Revision 2884f110d5409714f3a04eeb6d2ecd77da66b242 authored by Hugh Dickins on 28 May 2008, 18:36:07 UTC, committed by Thomas Gleixner on 04 June 2008, 11:11:47 UTC
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.

Signed-off-by: Hugh Dickins <hugh@veritas.com>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
1 parent 226e9a9
History
Tip revision: 2884f110d5409714f3a04eeb6d2ecd77da66b242 authored by Hugh Dickins on 28 May 2008, 18:36:07 UTC
x86: fix bad pmd ffff810000207xxx(9090909090909090)
Tip revision: 2884f11
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