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linux/mm
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Alexander Potapenko 37984225b9 mm/slub.c: init_on_free=1 should wipe freelist ptr for bulk allocations 
[ Upstream commit 0f181f9fbe ]

slab_alloc_node() already zeroed out the freelist pointer if
init_on_free was on.  Thibaut Sautereau noticed that the same needs to
be done for kmem_cache_alloc_bulk(), which performs the allocations
separately.

kmem_cache_alloc_bulk() is currently used in two places in the kernel,
so this change is unlikely to have a major performance impact.

SLAB doesn't require a similar change, as auto-initialization makes the
allocator store the freelist pointers off-slab.

Link: http://lkml.kernel.org/r/20191007091605.30530-1-glider@google.com
Fixes: 6471384af2 ("mm: security: introduce init_on_alloc=1 and init_on_free=1 boot options")
Signed-off-by: Alexander Potapenko <glider@google.com>
Reported-by: Thibaut Sautereau <thibaut@sautereau.fr>
Reported-by: Kees Cook <keescook@chromium.org>
Cc: Christoph Lameter <cl@linux.com>
Cc: Laura Abbott <labbott@redhat.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Signed-off-by: Sasha Levin <sashal@kernel.org>
2019-11-29 10:08:22 +01:00
..
kasan
mm/kasan: fix false positive invalid-free reports with CONFIG_KASAN_SW_TAGS=y
2019-08-24 19:48:42 -07:00
backing-dev.c
backing-dev: no need to check return value of debugfs_create functions
2019-06-03 15:49:07 +02:00
balloon_compaction.c
mm/balloon_compaction: suppress allocation warnings
2019-09-04 07:42:01 -04:00
cleancache.c
Merge tag 'driver-core-5.3-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/driver-core
2019-07-12 12:24:03 -07:00
cma_debug.c
mm/cma_debug.c: fix the break condition in cma_maxchunk_get()
2019-05-14 09:47:45 -07:00
cma.c
mm/cma.c: fail if fixed declaration can't be honored
2019-07-16 19:23:21 -07:00
cma.h
License cleanup: add SPDX GPL-2.0 license identifier to files with no license
2017-11-02 11:10:55 +01:00
compaction.c
mm, compaction: fix wrong pfn handling in __reset_isolation_pfn()
2019-10-29 09:22:32 +01:00
debug_page_ref.c
License cleanup: add SPDX GPL-2.0 license identifier to files with no license
2017-11-02 11:10:55 +01:00
debug.c
mm: update references to page _refcount
2019-05-14 19:52:47 -07:00
dmapool.c
mm: security: introduce init_on_alloc=1 and init_on_free=1 boot options
2019-07-12 11:05:46 -07:00
early_ioremap.c
mm/early_ioremap: Fix boot hang with earlyprintk=efi,keep
2017-12-11 14:54:44 +01:00
fadvise.c
fs: Export generic_fadvise()
2019-10-05 15:12:34 +02:00
failslab.c
mm/failslab.c: by default, do not fail allocations with direct reclaim only
2019-07-12 11:05:43 -07:00
filemap.c
mm/filemap.c: don't initiate writeback if mapping has no dirty pages
2019-11-12 19:28:21 +01:00
frame_vector.c
mm/frame_vector.c: release a semaphore in 'get_vaddr_frames()'
2017-12-14 16:00:48 -08:00
frontswap.c
treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 482
2019-06-19 17:09:52 +02:00
gup_benchmark.c
mm/gup: replace get_user_pages_longterm() with FOLL_LONGTERM
2019-05-14 09:47:45 -07:00
gup.c
mm: introduce ARCH_HAS_PTE_DEVMAP
2019-07-16 19:23:25 -07:00
highmem.c
mm: convert totalram_pages and totalhigh_pages variables to atomic
2018-12-28 12:11:47 -08:00
hmm.c
mm/hmm: always return EBUSY for invalid ranges in hmm_range_{fault,snapshot}
2019-07-25 16:14:39 -03:00
huge_memory.c
mm, page_owner: handle THP splits correctly
2019-08-24 19:48:42 -07:00
hugetlb_cgroup.c
mm: hugetlb: switch to css_tryget() in hugetlb_cgroup_charge_cgroup()
2019-11-20 16:49:14 +01:00
hugetlb.c
hugetlbfs: don't access uninitialized memmaps in pfn_range_valid_gigantic()
2019-10-29 09:22:33 +01:00
hwpoison-inject.c
hwpoison-inject: no need to check return value of debugfs_create functions
2019-06-03 15:39:40 +02:00
init-mm.c
mm: Allocate the mm_cpumask (mm->cpu_bitmap[]) dynamically based on nr_cpu_ids
2018-07-17 09:35:30 +02:00
internal.h
treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 152
2019-05-30 11:26:32 -07:00
interval_tree.c
treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 248
2019-06-19 17:09:08 +02:00
Kconfig
mm: introduce ARCH_HAS_PTE_DEVMAP
2019-07-16 19:23:25 -07:00
Kconfig.debug
mm, debug_pagealloc: use a page type instead of page_ext flag
2019-07-12 11:05:43 -07:00
khugepaged.c
mm/khugepaged: fix might_sleep() warn with CONFIG_HIGHPTE=y
2019-11-12 19:27:02 +01:00
kmemleak-test.c
treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 333
2019-06-05 17:37:06 +02:00
kmemleak.c
mm: kmemleak: disable early logging in case of error
2019-08-13 16:06:52 -07:00
ksm.c
mm/ksm.c: don't WARN if page is still mapped in remove_stable_node()
2019-11-29 10:07:47 +01:00
list_lru.c
mm: memcg/slab: stop setting page->mem_cgroup pointer for slab pages
2019-07-12 11:05:44 -07:00
maccess.c
Merge tag 'trace-v5.3' of git://git.kernel.org/pub/scm/linux/kernel/git/rostedt/linux-trace
2019-07-18 11:51:00 -07:00
madvise.c
mm: Handle MADV_WILLNEED through vfs_fadvise()
2019-10-05 15:12:34 +02:00
Makefile
memremap: move from kernel/ to mm/
2019-08-03 07:02:01 -07:00
memblock.c
mm: memblock: do not enforce current limit for memblock_phys* family
2019-10-29 09:22:33 +01:00
memcontrol.c
mm: memcg: switch to css_tryget() in get_mem_cgroup_from_mm()
2019-11-20 16:49:13 +01:00
memfd.c
Revert "mm: page cache: store only head pages in i_pages"
2019-07-05 19:55:18 -07:00
memory_hotplug.c
mm/memory_hotplug: don't access uninitialized memmaps in shrink_zone_span()
2019-11-29 10:07:46 +01:00
memory-failure.c
mm/memory-failure: poison read receives SIGKILL instead of SIGBUS if mmaped more than once
2019-10-29 09:22:34 +01:00
memory.c
mm: thp: make transhuge_vma_suitable available for anonymous THP
2019-07-18 17:08:06 -07:00
mempolicy.c
mm: mempolicy: fix the wrong return value and potential pages leak of mbind
2019-11-20 16:49:13 +01:00
mempool.c
docs/core-api/mm: fix return value descriptions in mm/
2019-03-05 21:07:20 -08:00
memremap.c
mm/memunmap: don't access uninitialized memmap in memunmap_pages()
2019-10-29 09:22:32 +01:00
memtest.c
License cleanup: add SPDX GPL-2.0 license identifier to files with no license
2017-11-02 11:10:55 +01:00
migrate.c
mm/migrate.c: initialize pud_entry in migrate_vma()
2019-08-03 07:02:01 -07:00
mincore.c
mm/mincore.c: fix race between swapoff and mincore
2019-07-12 11:05:43 -07:00
mlock.c
mm/mlock.c: change count_mm_mlocked_page_nr return type
2019-06-13 17:34:56 -10:00
mm_init.c
treewide: Add SPDX license identifier for missed files
2019-05-21 10:50:45 +02:00
mmap.c
treewide: Add SPDX license identifier for missed files
2019-05-21 10:50:45 +02:00
mmu_context.c
sched/headers: Prepare to move the task_lock()/unlock() APIs to <linux/sched/task.h>
2017-03-02 08:42:38 +01:00
mmu_gather.c
mm: mmu_gather: remove __tlb_reset_range() for force flush
2019-06-13 17:34:56 -10:00
mmu_notifier.c
mm/mmu_notifier: use hlist_add_head_rcu()
2019-07-12 11:05:46 -07:00
mmzone.c
License cleanup: add SPDX GPL-2.0 license identifier to files with no license
2017-11-02 11:10:55 +01:00
mprotect.c
mm/mprotect.c: fix compilation warning because of unused 'mm' variable
2019-05-14 09:47:51 -07:00
mremap.c
mm/mmu_notifier: contextual information for event triggering invalidation
2019-05-14 09:47:49 -07:00
msync.c
License cleanup: add SPDX GPL-2.0 license identifier to files with no license
2017-11-02 11:10:55 +01:00
nommu.c
mm: fix the MAP_UNINITIALIZED flag
2019-07-16 19:23:21 -07:00
oom_kill.c
memcg, oom: don't require __GFP_FS when invoking memcg OOM killer
2019-10-05 15:12:26 +02:00
page_alloc.c
mm, meminit: recalculate pcpu batch and high limits after init completes
2019-11-12 19:26:55 +01:00
page_counter.c
memcg: introduce memory.min
2018-06-07 17:34:36 -07:00
page_ext.c
mm, debug_pagealloc: use a page type instead of page_ext flag
2019-07-12 11:05:43 -07:00
page_idle.c
mm/page_idle.c: fix oops because end_pfn is larger than max_pfn
2019-06-29 16:43:45 +08:00
page_io.c
mm/page_io.c: do not free shared swap slots
2019-11-20 16:49:15 +01:00
page_isolation.c
mm/page_isolation.c: change the prototype of undo_isolate_page_range()
2019-07-12 11:05:43 -07:00
page_owner.c
mm/page_owner: don't access uninitialized memmaps when reading /proc/pagetypeinfo
2019-10-29 09:22:31 +01:00
page_poison.c
page_poison: play nicely with KASAN
2019-03-05 21:07:13 -08:00
page_vma_mapped.c
mm/rmap: map_pte() was not handling private ZONE_DEVICE page properly
2018-10-31 08:54:11 -07:00
page-writeback.c
mm: remove the account_page_dirtied export
2019-07-12 11:05:42 -07:00
pagewalk.c
mm: kernel-doc: add missing parameter descriptions
2018-04-05 21:36:27 -07:00
percpu-internal.h
percpu: convert chunk hints to be based on pcpu_block_md
2019-03-13 12:25:31 -07:00
percpu-km.c
treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 428
2019-06-05 17:37:16 +02:00
percpu-stats.c
treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 428
2019-06-05 17:37:16 +02:00
percpu-vm.c
treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 428
2019-06-05 17:37:16 +02:00
percpu.c
treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 428
2019-06-05 17:37:16 +02:00
pgtable-generic.c
x86/mm: Page size aware flush_tlb_mm_range()
2018-10-09 16:51:11 +02:00
process_vm_access.c
treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 152
2019-05-30 11:26:32 -07:00
quicklist.c
License cleanup: add SPDX GPL-2.0 license identifier to files with no license
2017-11-02 11:10:55 +01:00
readahead.c
treewide: Add SPDX license identifier for missed files
2019-05-21 10:50:45 +02:00
rmap.c
mm/hmm: fix bad subpage pointer in try_to_unmap_one
2019-08-13 16:06:52 -07:00
rodata_test.c
treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 441
2019-06-05 17:37:17 +02:00
shmem.c
Revert "Revert "mm, thp: consolidate THP gfp handling into alloc_hugepage_direct_gfpmask""
2019-08-13 16:06:52 -07:00
shuffle.c
mm: maintain randomization of page free lists
2019-05-14 19:52:48 -07:00
shuffle.h
mm: maintain randomization of page free lists
2019-05-14 19:52:48 -07:00
slab_common.c
mm: memcg/slab: fix panic in __free_slab() caused by premature memcg pointer release
2019-10-29 09:22:32 +01:00
slab.c
mm: security: introduce init_on_alloc=1 and init_on_free=1 boot options
2019-07-12 11:05:46 -07:00
slab.h
mm: slab: make page_cgroup_ino() to recognize non-compound slab pages properly
2019-11-12 19:26:58 +01:00
slob.c
mm/slab: refactor common ksize KASAN logic into slab_common.c
2019-07-12 11:05:42 -07:00
slub.c
mm/slub.c: init_on_free=1 should wipe freelist ptr for bulk allocations
2019-11-29 10:08:22 +01:00
sparse-vmemmap.c
mm/sparsemem: convert kmalloc_section_memmap() to populate_section_memmap()
2019-07-18 17:08:07 -07:00
sparse.c
mm/sparsemem: cleanup 'section number' data types
2019-07-18 17:08:07 -07:00
swap_cgroup.c
License cleanup: add SPDX GPL-2.0 license identifier to files with no license
2017-11-02 11:10:55 +01:00
swap_slots.c
mm, swap, get_swap_pages: use entry_size instead of cluster in parameter
2018-08-22 10:52:44 -07:00
swap_state.c
mm/swap_state.c: simplify total_swapcache_pages() with get_swap_device()
2019-07-12 11:05:43 -07:00
swap.c
docs: admin-guide: move sysctl directory to it
2019-07-15 11:03:01 -03:00
swapfile.c
mm, swap: use rbtree for swap_extent
2019-07-12 11:05:43 -07:00
truncate.c
treewide: Add SPDX license identifier for missed files
2019-05-21 10:50:45 +02:00
usercopy.c
usercopy: Avoid HIGHMEM pfn warning
2019-10-11 18:36:08 +02:00
userfaultfd.c
treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 499
2019-06-19 17:09:53 +02:00
util.c
mm: add account_locked_vm utility function
2019-07-16 19:23:25 -07:00
vmacache.c
mm: get rid of vmacache_flush_all() entirely
2018-09-13 15:18:04 -10:00
vmalloc.c
mm/vmalloc.c: fix percpu free VM area search criteria
2019-08-13 16:06:52 -07:00
vmpressure.c
mm/vmpressure.c: fix a signedness bug in vmpressure_register_event()
2019-10-17 13:47:21 -07:00
vmscan.c
mm: memcg: get number of pages on the LRU list in memcgroup base on lru_zone_size
2019-10-29 09:22:33 +01:00
vmstat.c
mm, vmstat: hide /proc/pagetypeinfo from normal users
2019-11-12 19:26:57 +01:00
workingset.c
mm: workingset: fix vmstat counters for shadow nodes
2019-08-13 16:06:52 -07:00
z3fold.c
mm/z3fold.c: claim page in the beginning of free
2019-10-17 13:47:20 -07:00
zbud.c
treewide: Add SPDX license identifier for more missed files
2019-05-21 10:50:45 +02:00
zpool.c
treewide: Add SPDX license identifier for more missed files
2019-05-21 10:50:45 +02:00
zsmalloc.c
mm/zsmalloc.c: fix build when CONFIG_COMPACTION=n
2019-08-30 18:00:50 -07:00
zswap.c
zswap: ignore debugfs_create_dir() return value
2019-06-03 15:39:39 +02:00