23 Mar, 2011

1 commit

• 7bc32f6f9   mm: debug-pagealloc: fix kconfig dependency warning ... Browse Code »

  Fix kconfig dependency warning to satisfy dependencies:

  warning: (PAGE_POISONING) selects DEBUG_PAGEALLOC which has unmet
  direct dependencies (DEBUG_KERNEL && ARCH_SUPPORTS_DEBUG_PAGEALLOC &&
  (!HIBERNATION || !PPC && !SPARC) && !KMEMCHECK)

  Signed-off-by: Akinobu Mita
  Cc: Randy Dunlap
  Signed-off-by: Andrew Morton
  Signed-off-by: Linus Torvalds

  Akinobu Mita

  2011-03-23 08:44:02 +0800  

21 Sep, 2009

1 commit

• 22f8b4582   trivial: improve help text for mm debug config options ... Browse Code »

  Improve the help text for PAGE_POISONING.
  Also fix some typos and improve consistency within the file.

  Signed-of-by: Frans Pop

  Signed-off-by: Jiri Kosina

  Frans Pop

  2009-09-21 21:14:57 +0800  

15 Jun, 2009

1 commit

• 7d46d9e6d   kmemcheck: enable in the x86 Kconfig ... Browse Code »

  let it rip!

  Signed-off-by: Pekka Enberg
  Signed-off-by: Ingo Molnar

  [rebased for mainline inclusion]
  Signed-off-by: Vegard Nossum

  Vegard Nossum

  2009-06-15 21:49:15 +0800  

03 Apr, 2009

1 commit

• ee3b4290a   generic debug pagealloc: build fix ... Browse Code »

  This fixes a build failure with generic debug pagealloc:

  mm/debug-pagealloc.c: In function 'set_page_poison':
  mm/debug-pagealloc.c:8: error: 'struct page' has no member named 'debug_flags'
  mm/debug-pagealloc.c: In function 'clear_page_poison':
  mm/debug-pagealloc.c:13: error: 'struct page' has no member named 'debug_flags'
  mm/debug-pagealloc.c: In function 'page_poison':
  mm/debug-pagealloc.c:18: error: 'struct page' has no member named 'debug_flags'
  mm/debug-pagealloc.c: At top level:
  mm/debug-pagealloc.c:120: error: redefinition of 'kernel_map_pages'
  include/linux/mm.h:1278: error: previous definition of 'kernel_map_pages' was here
  mm/debug-pagealloc.c: In function 'kernel_map_pages':
  mm/debug-pagealloc.c:122: error: 'debug_pagealloc_enabled' undeclared (first use in this function)

  by fixing

  - debug_flags should be in struct page
  - define DEBUG_PAGEALLOC config option for all architectures

  Signed-off-by: Akinobu Mita
  Reported-by: Alexander Beregalov
  Signed-off-by: Andrew Morton
  Signed-off-by: Linus Torvalds

  Akinobu Mita

  2009-04-03 10:04:48 +0800  

01 Apr, 2009

1 commit

• 6a11f75b6   generic debug pagealloc ... Browse Code »

  CONFIG_DEBUG_PAGEALLOC is now supported by x86, powerpc, sparc64, and
  s390. This patch implements it for the rest of the architectures by
  filling the pages with poison byte patterns after free_pages() and
  verifying the poison patterns before alloc_pages().

  This generic one cannot detect invalid page accesses immediately but
  invalid read access may cause invalid dereference by poisoned memory and
  invalid write access can be detected after a long delay.

  Signed-off-by: Akinobu Mita
  Cc:
  Signed-off-by: Andrew Morton
  Signed-off-by: Linus Torvalds

  Akinobu Mita

  2009-04-01 23:59:13 +0800