Alexander Potapenko 236e9f1538 kfence: skip all GFP_ZONEMASK allocations ... Allocation requests outside ZONE_NORMAL (MOVABLE, HIGHMEM or DMA) cannot be fulfilled by KFENCE, because KFENCE memory pool is located in a zone different from the requested one. Because callers of kmem_cache_alloc() may actually rely on the allocation to reside in the requested zone (e.g. memory allocations done with __GFP_DMA must be DMAable), skip all allocations done with GFP_ZONEMASK and/or respective SLAB flags (SLAB_CACHE_DMA and SLAB_CACHE_DMA32). Link: https://lkml.kernel.org/r/20210714092222.1890268-2-glider@google.com Fixes: 0ce20dd840 ("mm: add Kernel Electric-Fence infrastructure") Signed-off-by: Alexander Potapenko <glider@google.com> Reviewed-by: Marco Elver <elver@google.com> Acked-by: Souptick Joarder <jrdr.linux@gmail.com> Cc: Dmitry Vyukov <dvyukov@google.com> Cc: Greg Kroah-Hartman <gregkh@linuxfoundation.org> Cc: Souptick Joarder <jrdr.linux@gmail.com> Cc: <stable@vger.kernel.org> [5.12+] Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>		2021-07-23 17:43:28 -07:00
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core.c	kfence: skip all GFP_ZONEMASK allocations	2021-07-23 17:43:28 -07:00
kfence_test.c	kfence: defer kfence_test_init to ensure that kunit debugfs is created	2021-07-23 17:43:28 -07:00
kfence.h	kfence: report sensitive information based on no_hash_pointers	2021-02-26 09:41:02 -08:00
Makefile	kfence: add test suite	2021-02-26 09:41:02 -08:00
report.c	mm: fix typos in comments	2021-05-07 00:26:35 -07:00