diff options
| author | Christoph Lameter <[email protected]> | 2013-07-02 12:12:10 -0700 |
|---|---|---|
| committer | Pekka Enberg <[email protected]> | 2013-07-07 18:58:31 +0300 |
| commit | 0f8f8094d28eb53368ac09186ea6b3a324cc7d44 (patch) | |
| tree | 4f2d98ae905ce6405291880c034b18c8e59e2839 /tools/perf/scripts/python/check-perf-trace.py | |
| parent | a6d78159f8a717263bea71bef738256dafe6260d (diff) | |
slab: fix init_lock_keys
Some architectures (e.g. powerpc built with CONFIG_PPC_256K_PAGES=y
CONFIG_FORCE_MAX_ZONEORDER=11) get PAGE_SHIFT + MAX_ORDER > 26.
In 3.10 kernels, CONFIG_LOCKDEP=y with PAGE_SHIFT + MAX_ORDER > 26 makes
init_lock_keys() dereference beyond kmalloc_caches[26].
This leads to an unbootable system (kernel panic at initializing SLAB)
if one of kmalloc_caches[26...PAGE_SHIFT+MAX_ORDER-1] is not NULL.
Fix this by making sure that init_lock_keys() does not dereference beyond
kmalloc_caches[26] arrays.
Signed-off-by: Christoph Lameter <[email protected]>
Reported-by: Tetsuo Handa <[email protected]>
Cc: Pekka Enberg <[email protected]>
Cc: <[email protected]> [3.10.x]
Signed-off-by: Andrew Morton <[email protected]>
Signed-off-by: Pekka Enberg <[email protected]>
Diffstat (limited to 'tools/perf/scripts/python/check-perf-trace.py')
0 files changed, 0 insertions, 0 deletions