The patch titled
SLUB Debug: fix check for super sized slabs (>512k 64bit, >256k 32bit)
has been added to the -mm tree. Its filename is
slub-debug-fix-check-for-super-sized-slabs-512k-64bit-256k.patch
*** Remember to use Documentation/SubmitChecklist when testing your code ***
See http://www.zip.com.au/~akpm/linux/patches/stuff/added-to-mm.txt to find
out what to do about this
------------------------------------------------------
Subject: SLUB Debug: fix check for super sized slabs (>512k 64bit, >256k 32bit)
From: Christoph Lameter <[EMAIL PROTECTED]>
The check for super sized slabs where we can no longer move the free
pointer behind the object for debugging purposes etc is accessing a field
that is not setup yet. We must use objsize here since the size of the slab
has not been determined yet.
The effect of this is that a global slab shrink via "slabinfo -s" will show
errors about offsets being wrong if booted with slub_debug. Potentially
there are other troubles with huge slabs under slub_debug because the
calculated free pointer offset is truncated.
Signed-off-by: Christoph Lameter <[EMAIL PROTECTED]>
Signed-off-by: Andrew Morton <[EMAIL PROTECTED]>
---
mm/slub.c | 2 +-
1 files changed, 1 insertion(+), 1 deletion(-)
diff -puN mm/slub.c~slub-debug-fix-check-for-super-sized-slabs-512k-64bit-256k
mm/slub.c
--- a/mm/slub.c~slub-debug-fix-check-for-super-sized-slabs-512k-64bit-256k
+++ a/mm/slub.c
@@ -939,7 +939,7 @@ static void kmem_cache_open_debug_check(
* Debugging or ctor may create a need to move the free
* pointer. Fail if this happens.
*/
- if (s->size >= 65535 * sizeof(void *)) {
+ if (s->objsize >= 65535 * sizeof(void *)) {
BUG_ON(s->flags & (SLAB_RED_ZONE | SLAB_POISON |
SLAB_STORE_USER | SLAB_DESTROY_BY_RCU));
BUG_ON(s->ctor);
_
Patches currently in -mm which might be from [EMAIL PROTECTED] are
origin.patch
slub-another-slabinfo-fix.patch
git-ubi.patch
quicklist-support-for-x86_64.patch
slub-debug-fix-check-for-super-sized-slabs-512k-64bit-256k.patch
change-zonelist-order-zonelist-order-selection-logic.patch
change-zonelist-order-zonelist-order-selection-logic-add-check_highest_zone-to-build_zonelists_in_zone_order.patch
change-zonelist-order-v6-zonelist-fix.patch
change-zonelist-order-auto-configuration.patch
change-zonelist-order-documentaion.patch
make-proc-slabinfo-use-seq_list_xxx-helpers.patch
add-__gfp_movable-for-callers-to-flag-allocations-from-high-memory-that-may-be-migrated-mark-bio_alloc-allocations-correctly.patch
add-__gfp_movable-for-callers-to-flag-allocations-from-high-memory-that-may-be-migrated-rename-gfp_high_movable-to-gfp_highuser_movable.patch
add-__gfp_movable-for-callers-to-flag-allocations-from-high-memory-that-may-be-migrated-mark-page-cache-pages-as-__gfp_pagecache-instead-of-__gfp_movable.patch
group-short-lived-and-reclaimable-kernel-allocations-use-slab_account_reclaim-to-determine-when-__gfp_reclaimable-should-be-used.patch
group-short-lived-and-reclaimable-kernel-allocations-use-slab_account_reclaim-to-determine-when-__gfp_reclaimable-should-be-used-fix.patch
group-short-lived-and-reclaimable-kernel-allocations-do-not-annotate-shmem-allocations-explicitly.patch
group-short-lived-and-reclaimable-kernel-allocations-add-__gfp_temporary-to-identify-allocations-that-are-short-lived.patch
have-kswapd-keep-a-minimum-order-free-other-than-order-0.patch
have-kswapd-keep-a-minimum-order-free-other-than-order-0-fix.patch
only-check-absolute-watermarks-for-alloc_high-and-alloc_harder-allocations.patch
slub-mm-only-make-slub-the-default-slab-allocator.patch
slub-exploit-page-mobility-to-increase-allocation-order.patch
slub-reduce-antifrag-max-order.patch
slub-reduce-antifrag-max-order-use-antifrag-constant-instead-of-hardcoding-page-order.patch
mm-implement-swap-prefetching.patch
rename-gfp_high_movable-to-gfp_highuser_movable-prefetch.patch
revoke-core-code.patch
-
To unsubscribe from this list: send the line "unsubscribe mm-commits" in
the body of a message to [EMAIL PROTECTED]
More majordomo info at http://vger.kernel.org/majordomo-info.html
