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mm, kasan: switch SLUB to stackdepot, enable memory quarantine for SLUB

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For KASAN builds:
 - switch SLUB allocator to using stackdepot instead of storing the
   allocation/deallocation stacks in the objects;
 - change the freelist hook so that parts of the freelist can be put
   into the quarantine.

[[email protected]: fixes]
  Link: http://lkml.kernel.org/r/[email protected]
Link: http://lkml.kernel.org/r/[email protected]
Signed-off-by: Alexander Potapenko <[email protected]>
Cc: Andrey Konovalov <[email protected]>
Cc: Christoph Lameter <[email protected]>
Cc: Dmitry Vyukov <[email protected]>
Cc: Steven Rostedt (Red Hat) <[email protected]>
Cc: Joonsoo Kim <[email protected]>
Cc: Kostya Serebryany <[email protected]>
Cc: Andrey Ryabinin <[email protected]>
Cc: Kuthonuzo Luruo <[email protected]>
Signed-off-by: Andrew Morton <[email protected]>
Signed-off-by: Linus Torvalds <[email protected]>
This commit is contained in:
Alexander Potapenko 2016-07-28 15:49:07 -07:00 • committed by Linus Torvalds
commit 80a9201a59
10 changed files with 93 additions and 56 deletions
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4
lib/Kconfig.kasan
View file

@ -5,9 +5,9 @@ if HAVE_ARCH_KASAN
config KASAN
bool "KASan: runtime memory debugger"
depends on SLUB_DEBUG || (SLAB && !DEBUG_SLAB)
depends on SLUB || (SLAB && !DEBUG_SLAB)
select CONSTRUCTORS
select STACKDEPOT if SLAB
select STACKDEPOT
help
Enables kernel address sanitizer - runtime memory debugger,
designed to find out-of-bounds accesses and use-after-free bugs.