linux-stable/mm
Roman Gushchin 9a79822590 mm: kmem: drop __GFP_NOFAIL when allocating objcg vectors
commit 24948e3b7b upstream.

Objcg vectors attached to slab pages to store slab object ownership
information are allocated using gfp flags for the original slab
allocation.  Depending on slab page order and the size of slab objects,
objcg vector can take several pages.

If the original allocation was done with the __GFP_NOFAIL flag, it
triggered a warning in the page allocation code.  Indeed, order > 1 pages
should not been allocated with the __GFP_NOFAIL flag.

Fix this by simply dropping the __GFP_NOFAIL flag when allocating the
objcg vector.  It effectively allows to skip the accounting of a single
slab object under a heavy memory pressure.

An alternative would be to implement the mechanism to fallback to order-0
allocations for accounting metadata, which is also not perfect because it
will increase performance penalty and memory footprint of the kernel
memory accounting under memory pressure.

Link: https://lkml.kernel.org/r/ZUp8ZFGxwmCx4ZFr@P9FQF9L96D.corp.robot.car
Signed-off-by: Roman Gushchin <roman.gushchin@linux.dev>
Reported-by: Christoph Lameter <cl@linux.com>
Closes: https://lkml.kernel.org/r/6b42243e-f197-600a-5d22-56bd728a5ad8@gentwo.org
Acked-by: Shakeel Butt <shakeelb@google.com>
Cc: Matthew Wilcox <willy@infradead.org>
Cc: <stable@vger.kernel.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2023-11-28 17:15:15 +00:00
..
damon mm/damon/sysfs: check error from damon_sysfs_update_target() 2023-11-28 17:15:02 +00:00
kasan kasan: print the original fault addr when access invalid shadow 2023-11-02 09:36:56 +01:00
kfence mm/slab: introduce kmem_cache flag SLAB_NO_MERGE 2023-06-02 10:24:33 +02:00
kmsan kasan,kmsan: remove __GFP_KSWAPD_RECLAIM usage from kasan/kmsan 2023-06-23 16:59:26 -07:00
Kconfig mm: disable CONFIG_PER_VMA_LOCK until its fixed 2023-07-08 09:29:29 -07:00
Kconfig.debug mm: page_table_check: Make it dependent on EXCLUSIVE_SYSTEM_RAM 2023-05-29 16:14:28 +01:00
Makefile mm: page_alloc: split out DEBUG_PAGEALLOC 2023-06-09 16:25:23 -07:00
backing-dev.c mm: backing-dev: make bdi_class a static const structure 2023-06-23 16:59:27 -07:00
balloon_compaction.c
bootmem_info.c
cma.c mm/cma: use nth_page() in place of direct struct page manipulation 2023-11-28 17:15:08 +00:00
cma.h
cma_debug.c
cma_sysfs.c mm: cma: make kobj_type structure constant 2023-03-28 16:20:06 -07:00
compaction.c mm: compaction: fix endless looping over same migrate block 2023-08-04 13:03:42 -07:00
debug.c mm: update validate_mm() to use vma iterator 2023-06-09 16:25:31 -07:00
debug_page_alloc.c mm: page_alloc: split out DEBUG_PAGEALLOC 2023-06-09 16:25:23 -07:00
debug_page_ref.c
debug_vm_pgtable.c mm/debug_vm_pgtable,page_table_check: warn pte map fails 2023-06-19 16:19:15 -07:00
dmapool.c dmapool: create/destroy cleanup 2023-06-09 16:25:17 -07:00
dmapool_test.c dmapool: add alloc/free performance test 2023-04-05 19:42:38 -07:00
early_ioremap.c mm/early_ioremap.c: improve the execution efficiency of early_ioremap_setup() 2023-06-09 16:25:56 -07:00
fadvise.c mm: remove unnecessary pagevec includes 2023-06-23 16:59:31 -07:00
fail_page_alloc.c mm: page_alloc: split out FAIL_PAGE_ALLOC 2023-06-09 16:25:23 -07:00
failslab.c
filemap.c - Yosry Ahmed brought back some cgroup v1 stats in OOM logs. 2023-06-28 10:28:11 -07:00
folio-compat.c - Nick Piggin's "shoot lazy tlbs" series, to improve the peformance of 2023-04-27 19:42:02 -07:00
frontswap.c mm: zswap: support exclusive loads 2023-06-19 16:19:05 -07:00
gup.c mm/gup: reintroduce FOLL_NUMA as FOLL_HONOR_NUMA_FAULT 2023-08-21 13:07:20 -07:00
gup_test.c Merge mm-hotfixes-stable into mm-stable to pick up depended-upon changes. 2023-06-23 16:58:19 -07:00
gup_test.h
highmem.c mm: ptep_get() conversion 2023-06-19 16:19:25 -07:00
hmm.c mm: enable page walking API to lock vmas during the walk 2023-08-21 13:07:20 -07:00
huge_memory.c mm: fix for negative counter: nr_file_hugepages 2023-11-28 17:15:15 +00:00
hugetlb.c mm/hugetlb: use nth_page() in place of direct struct page manipulation 2023-11-28 17:15:10 +00:00
hugetlb_cgroup.c mm/hugetlb: increase use of folios in alloc_huge_page() 2023-02-13 15:54:27 -08:00
hugetlb_vmemmap.c mm: hugetlb_vmemmap: fix a race between vmemmap pmd split 2023-09-19 12:30:11 +02:00
hugetlb_vmemmap.h
hwpoison-inject.c
init-mm.c IOMMU Updates for Linux 6.4 2023-04-30 13:00:38 -07:00
internal.h mm/gup: handle cont-PTE hugetlb pages correctly in gup_must_unshare() via GUP-fast 2023-08-21 13:07:21 -07:00
interval_tree.c
io-mapping.c
ioremap.c
khugepaged.c mm/khugepaged: fix regression in collapse_file() 2023-06-29 09:41:45 -07:00
kmemleak.c lib/stackdepot, mm: rename stack_depot_want_early_init 2023-02-16 20:43:49 -08:00
ksm.c mm: enable page walking API to lock vmas during the walk 2023-08-21 13:07:20 -07:00
list_lru.c
maccess.c mm: Fix copy_from_user_nofault(). 2023-04-12 17:36:23 -07:00
madvise.c madvise:madvise_free_pte_range(): don't use mapcount() against large folio for sharing check 2023-08-24 14:59:46 -07:00
mapping_dirty_helpers.c mm: ptep_get() conversion 2023-06-19 16:19:25 -07:00
memblock.c Revert "mm,memblock: reset memblock.reserved to system init state to prevent UAF" 2023-07-28 09:47:06 -07:00
memcontrol.c mm: kmem: drop __GFP_NOFAIL when allocating objcg vectors 2023-11-28 17:15:15 +00:00
memfd.c revert "memfd: improve userspace warnings for missing exec-related flags". 2023-09-13 09:53:57 +02:00
memory-failure.c mm: memory-failure: fix unexpected return value in soft_offline_page() 2023-08-21 13:07:22 -07:00
memory-tiers.c memory tier: remove unneeded !IS_ENABLED(CONFIG_MIGRATION) check 2023-06-19 16:19:29 -07:00
memory.c mm: avoid 'might_sleep()' in get_mmap_lock_carefully() 2023-08-21 06:11:33 +02:00
memory_hotplug.c mm/memory_hotplug: use pfn math in place of direct struct page manipulation 2023-11-28 17:15:08 +00:00
mempolicy.c numa: Generalize numa_map_to_online_node() 2023-11-20 11:56:42 +01:00
mempool.c
memremap.c mm/memremap.c: fix outdated comment in devm_memremap_pages 2023-02-09 16:51:46 -08:00
memtest.c mm/memtest: add results of early memtest to /proc/meminfo 2023-04-05 19:42:55 -07:00
migrate.c mm/migrate: fix do_pages_move for compat pointers 2023-11-02 09:36:48 +01:00
migrate_device.c mm: enable page walking API to lock vmas during the walk 2023-08-21 13:07:20 -07:00
mincore.c mm: enable page walking API to lock vmas during the walk 2023-08-21 13:07:20 -07:00
mlock.c mm: enable page walking API to lock vmas during the walk 2023-08-21 13:07:20 -07:00
mm_init.c - Yosry Ahmed brought back some cgroup v1 stats in OOM logs. 2023-06-28 10:28:11 -07:00
mm_slot.h
mmap.c mmap: fix error paths with dup_anon_vma() 2023-11-08 14:09:04 +01:00
mmap_lock.c
mmu_gather.c mm: prefer xxx_page() alloc/free functions for order-0 pages 2023-03-28 16:20:16 -07:00
mmu_notifier.c mm/mmu_notifier: remove unused mmu_notifier_range_update_to_read_only export 2023-02-02 22:32:54 -08:00
mmzone.c
mprotect.c mm: enable page walking API to lock vmas during the walk 2023-08-21 13:07:20 -07:00
mremap.c vm: fix move_vma() memory accounting being off 2023-09-19 12:30:30 +02:00
msync.c
nommu.c xtensa: fix lock_mm_and_find_vma in case VMA not found 2023-07-01 08:00:05 -07:00
oom_kill.c mm, oom: do not check 0 mask in out_of_memory() 2023-06-09 16:25:20 -07:00
page-writeback.c writeback: account the number of pages written back 2023-07-08 09:29:30 -07:00
page_alloc.c mm/page_alloc: correct start page when guard page debug is enabled 2023-11-02 09:36:48 +01:00
page_counter.c
page_ext.c mm/page_ext: init page_ext early if there are no deferred struct pages 2023-02-02 22:33:22 -08:00
page_idle.c mm: page_idle: convert page idle to use a folio 2023-01-18 17:12:52 -08:00
page_io.c swap: use __bio_add_page to add page to bio 2023-05-31 09:50:02 -06:00
page_isolation.c mm: page_isolation: write proper kerneldoc 2023-06-19 16:18:59 -07:00
page_owner.c mm/page_owner/cma: show pfn in cma/page_owner with hex format 2023-06-19 16:19:32 -07:00
page_poison.c
page_reporting.c mm, treewide: redefine MAX_ORDER sanely 2023-04-05 19:42:46 -07:00
page_reporting.h
page_table_check.c - Yosry Ahmed brought back some cgroup v1 stats in OOM logs. 2023-06-28 10:28:11 -07:00
page_vma_mapped.c mm: ptep_get() conversion 2023-06-19 16:19:25 -07:00
pagewalk.c mm/pagewalk: fix bootstopping regression from extra pte_unmap() 2023-09-13 09:53:46 +02:00
percpu-internal.h percpu-internal/pcpu_chunk: re-layout pcpu_chunk structure to reduce false sharing 2023-06-19 16:19:29 -07:00
percpu-km.c
percpu-stats.c
percpu-vm.c
percpu.c mm: memcontrol: rename memcg_kmem_enabled() 2023-02-16 20:43:56 -08:00
pgalloc-track.h
pgtable-generic.c mm: ptep_get() conversion 2023-06-19 16:19:25 -07:00
process_vm_access.c mm/gup: remove unused vmas parameter from pin_user_pages_remote() 2023-06-09 16:25:25 -07:00
ptdump.c mm: ptdump should use ptep_get_lockless() 2023-06-19 16:19:24 -07:00
readahead.c vfs: fix readahead(2) on block devices 2023-11-20 11:56:43 +01:00
rmap.c mm: ptep_get() conversion 2023-06-19 16:19:25 -07:00
rodata_test.c
secretmem.c mm/mlock: rename mlock_future_check() to mlock_future_ok() 2023-06-09 16:25:38 -07:00
shmem.c tmpfs: verify {g,u}id mount options correctly 2023-09-13 09:52:58 +02:00
show_mem.c mm: page_alloc: collect mem statistic into show_mem.c 2023-06-09 16:25:22 -07:00
shrinker_debug.c Revert "mm: shrinkers: make count and scan in shrinker debugfs lockless" 2023-06-19 13:19:34 -07:00
shuffle.c
shuffle.h mm, treewide: redefine MAX_ORDER sanely 2023-04-05 19:42:46 -07:00
slab.c slab updates for 6.5 2023-06-29 16:34:12 -07:00
slab.h kasan, slub: fix HW_TAGS zeroing with slub_debug 2023-07-08 09:29:32 -07:00
slab_common.c mm: slab: Do not create kmalloc caches smaller than arch_slab_minalign() 2023-10-25 12:16:11 +02:00
slub.c slab updates for 6.5 2023-06-29 16:34:12 -07:00
sparse-vmemmap.c mm: ptep_get() conversion 2023-06-19 16:19:25 -07:00
sparse.c - Arnd Bergmann has fixed a bunch of -Wmissing-prototypes in 2023-06-28 10:59:38 -07:00
swap.c mm: remove references to pagevec 2023-06-23 16:59:30 -07:00
swap.h mm: remove the __swap_writepage return value 2023-02-02 22:33:33 -08:00
swap_cgroup.c
swap_slots.c
swap_state.c mm: remove unnecessary pagevec includes 2023-06-23 16:59:31 -07:00
swapfile.c mm/swapfile: fix wrong swap entry type for hwpoisoned swapcache page 2023-08-04 13:03:40 -07:00
truncate.c mm: remove references to pagevec 2023-06-23 16:59:30 -07:00
usercopy.c mm: Fix copy_from_user_nofault(). 2023-04-12 17:36:23 -07:00
userfaultfd.c mm: ptep_get() conversion 2023-06-19 16:19:25 -07:00
util.c rcu: dump vmalloc memory info safely 2023-09-13 09:53:50 +02:00
vmalloc.c mm/vmalloc: add a safer version of find_vm_area() for debug 2023-09-13 09:53:50 +02:00
vmpressure.c net-memcg: Fix scope of sockmem pressure indicators 2023-09-13 09:53:07 +02:00
vmscan.c Multi-gen LRU: avoid race in inc_min_seq() 2023-09-19 12:30:11 +02:00
vmstat.c - Yosry Ahmed brought back some cgroup v1 stats in OOM logs. 2023-06-28 10:28:11 -07:00
workingset.c Multi-gen LRU: fix workingset accounting 2023-06-09 16:25:46 -07:00
z3fold.c mm: zswap: remove shrink from zpool interface 2023-06-19 16:19:27 -07:00
zbud.c mm: zswap: remove shrink from zpool interface 2023-06-19 16:19:27 -07:00
zpool.c mm: zswap: remove shrink from zpool interface 2023-06-19 16:19:27 -07:00
zsmalloc.c zsmalloc: fix races between modifications of fullness and isolated 2023-08-04 13:03:40 -07:00
zswap.c mm: zswap: fix double invalidate with exclusive loads 2023-06-23 16:59:31 -07:00