Jan Kara 385d838df2 mm: avoid overflows in dirty throttling logic ... The dirty throttling logic is interspersed with assumptions that dirty limits in PAGE_SIZE units fit into 32-bit (so that various multiplications fit into 64-bits). If limits end up being larger, we will hit overflows, possible divisions by 0 etc. Fix these problems by never allowing so large dirty limits as they have dubious practical value anyway. For dirty_bytes / dirty_background_bytes interfaces we can just refuse to set so large limits. For dirty_ratio / dirty_background_ratio it isn't so simple as the dirty limit is computed from the amount of available memory which can change due to memory hotplug etc. So when converting dirty limits from ratios to numbers of pages, we just don't allow the result to exceed UINT_MAX. This is root-only triggerable problem which occurs when the operator sets dirty limits to >16 TB. Link: https://lkml.kernel.org/r/20240621144246.11148-2-jack@suse.cz Signed-off-by: Jan Kara <jack@suse.cz> Reported-by: Zach O'Keefe <zokeefe@google.com> Reviewed-By: Zach O'Keefe <zokeefe@google.com> Cc: <stable@vger.kernel.org> Signed-off-by: Andrew Morton <akpm@linux-foundation.org>		2024-07-03 12:29:24 -07:00
..
damon	mm/damon/core: fix return value from damos_wmark_metric_value	2024-05-11 15:41:36 -07:00
kasan	kasan: fix bad call to unpoison_slab_object	2024-06-24 20:52:09 -07:00
kfence	mm: introduce slabobj_ext to support slab object extensions	2024-04-25 20:55:51 -07:00
kmsan	kmsan: do not wipe out origin when doing partial unpoisoning	2024-06-05 19:19:25 -07:00
backing-dev.c	writeback: support retrieving per group debug writeback stats of bdi	2024-05-05 17:53:51 -07:00
balloon_compaction.c
bootmem_info.c
cma_debug.c
cma_sysfs.c	mm/cma: add sysfs file 'release_pages_success'	2024-02-22 10:24:57 -08:00
cma.c	mm/cma: drop incorrect alignment check in cma_init_reserved_mem	2024-04-25 20:56:42 -07:00
cma.h	mm/cma: add sysfs file 'release_pages_success'	2024-02-22 10:24:57 -08:00
compaction.c	mm: handle profiling for fake memory allocations during compaction	2024-06-24 20:52:09 -07:00
debug_page_alloc.c	mm: page_alloc: consolidate free page accounting	2024-04-25 20:56:04 -07:00
debug_page_ref.c
debug_vm_pgtable.c	mm/debug_vm_pgtable: drop RANDOM_ORVALUE trick	2024-06-15 10:43:08 -07:00
debug.c	mm/debug: print only page mapcount (excluding folio entire mapcount) in __dump_folio()	2024-05-05 17:53:31 -07:00
dmapool_test.c
dmapool.c
early_ioremap.c
execmem.c	mm/execmem, arch: convert remaining overrides of module_alloc to execmem	2024-05-14 00:31:43 -07:00
fadvise.c
fail_page_alloc.c
failslab.c
filemap.c	mm: fix xyz_noprof functions calling profiled functions	2024-06-05 19:19:26 -07:00
folio-compat.c	mm: remove __set_page_dirty_nobuffers()	2024-04-25 20:56:25 -07:00
gup_test.c
gup_test.h
gup.c	mm/gup: fix hugepd handling in hugetlb rework	2024-05-07 10:37:01 -07:00
highmem.c	x86/kexec: use pr_err() instead of kexec_dprintk() when an error occurs	2023-12-29 12:22:28 -08:00
hmm.c	mm/treewide: replace pXd_huge() with pXd_leaf()	2024-04-25 20:55:46 -07:00
huge_memory.c	mm: huge_memory: fix misused mapping_large_folio_support() for anon folios	2024-06-15 10:43:06 -07:00
hugetlb_cgroup.c	mm/hugetlb: assert hugetlb_lock in __hugetlb_cgroup_commit_charge	2024-05-05 17:53:41 -07:00
hugetlb_vmemmap.c	memory: remove the now superfluous sentinel element from ctl_table array	2024-04-25 20:56:32 -07:00
hugetlb_vmemmap.h
hugetlb.c	mm/hugetlb: do not call vma_add_reservation upon ENOMEM	2024-06-05 19:19:26 -07:00
hwpoison-inject.c	mm/memory-failure: convert shake_page() to shake_folio()	2024-05-05 17:53:45 -07:00
init-mm.c	mm: Deprecate pasid field	2023-12-12 10:11:32 +01:00
internal.h	/proc/pid/smaps: add mseal info for vma	2024-06-24 20:52:09 -07:00
interval_tree.c
io-mapping.c
ioremap.c
Kconfig	The usual shower of singleton fixes and minor series all over MM,	2024-05-19 09:21:03 -07:00
Kconfig.debug	mm/slub: unify all sl[au]b parameters with "slab_$param"	2024-01-22 10:31:08 +01:00
khugepaged.c	mm: simplify thp_vma_allowable_order	2024-05-05 17:53:53 -07:00
kmemleak.c	mm: lift gfp_kmemleak_mask() to gfp.h	2024-05-19 14:40:44 -07:00
ksm.c	mm/ksm: fix ksm_zero_pages accounting	2024-06-05 19:19:26 -07:00
list_lru.c	mm/zswap: stop lru list shrinking when encounter warm region	2024-02-22 10:24:54 -08:00
maccess.c
madvise.c	mseal: add mseal syscall	2024-05-23 19:40:26 -07:00
Makefile	mseal: add mseal syscall	2024-05-23 19:40:26 -07:00
mapping_dirty_helpers.c
memblock.c	memblock: use numa_valid_node() helper to check for invalid node ID	2024-06-16 10:17:57 +03:00
memcontrol.c	mm: shmem: fix getting incorrect lruvec when replacing a shmem folio	2024-06-15 10:43:08 -07:00
memfd.c	mm/memfd: refactor memfd_tag_pins() and memfd_wait_for_pins()	2024-03-04 17:01:21 -08:00
memory_hotplug.c	mm/hugetlb: rename dissolve_free_huge_pages() to dissolve_free_hugetlb_folios()	2024-05-05 17:53:35 -07:00
memory-failure.c	mm/memory-failure: fix handling of dissolved but not taken off from buddy pages	2024-05-24 11:55:08 -07:00
memory-tiers.c	memory tier: create CPUless memory tiers after obtaining HMAT info	2024-05-05 17:53:26 -07:00
memory.c	mm/memory: don't require head page for do_set_pmd()	2024-06-24 20:52:11 -07:00
mempolicy.c	mm: add pmd_folio()	2024-04-25 20:56:19 -07:00
mempool.c	mm: fix xyz_noprof functions calling profiled functions	2024-06-05 19:19:26 -07:00
memremap.c	mm: convert put_devmap_managed_page_refs() to put_devmap_managed_folio_refs()	2024-05-05 17:53:49 -07:00
memtest.c	memtest: use {READ,WRITE}_ONCE in memory scanning	2024-03-13 12:12:21 -07:00
migrate_device.c	The usual shower of singleton fixes and minor series all over MM,	2024-05-19 09:21:03 -07:00
migrate.c	mm/migrate: make migrate_pages_batch() stats consistent	2024-06-24 20:52:10 -07:00
mincore.c
mlock.c	mm: add pmd_folio()	2024-04-25 20:56:19 -07:00
mm_init.c	Revert "mm: init_mlocked_on_free_v3"	2024-06-15 10:43:05 -07:00
mm_slot.h
mmap_lock.c
mmap.c	mseal: add mseal syscall	2024-05-23 19:40:26 -07:00
mmu_gather.c	mm/mmu_gather: improve cond_resched() handling with large folios and expensive page freeing	2024-02-22 15:27:17 -08:00
mmu_notifier.c	mmu_notifier: remove the .change_pte() callback	2024-04-11 13:18:36 -04:00
mmzone.c	zswap: shrink zswap pool based on memory pressure	2023-12-12 10:57:02 -08:00
mprotect.c	mseal: add mseal syscall	2024-05-23 19:40:26 -07:00
mremap.c	mseal: add mseal syscall	2024-05-23 19:40:26 -07:00
mseal.c	mseal: add mseal syscall	2024-05-23 19:40:26 -07:00
msync.c
nommu.c	The usual shower of singleton fixes and minor series all over MM,	2024-05-19 09:21:03 -07:00
oom_kill.c	memory: remove the now superfluous sentinel element from ctl_table array	2024-04-25 20:56:32 -07:00
page_alloc.c	mm/page_alloc: Separate THP PCP into movable and non-movable categories	2024-06-24 20:52:11 -07:00
page_counter.c
page_ext.c	mm: make page_ext_get() take a const argument	2024-04-25 20:56:14 -07:00
page_idle.c
page_io.c	mm: drop the 'anon_' prefix for swap-out mTHP counters	2024-06-05 19:19:23 -07:00
page_isolation.c	mm: page_isolation: prepare for hygienic freelists	2024-04-25 20:56:04 -07:00
page_owner.c	mm/page-owner: use gfp_nested_mask() instead of open coded masking	2024-05-19 14:40:44 -07:00
page_poison.c	mm/page_poison: replace kmap_atomic() with kmap_local_page()	2023-12-10 16:51:50 -08:00
page_reporting.c	mm, treewide: rename MAX_ORDER to MAX_PAGE_ORDER	2024-01-08 15:27:15 -08:00
page_reporting.h
page_table_check.c	mm/page_table_check: fix crash on ZONE_DEVICE	2024-06-15 10:43:04 -07:00
page_vma_mapped.c	mm: make page_mapped_in_vma conditional on CONFIG_MEMORY_FAILURE	2024-05-05 17:53:45 -07:00
page-writeback.c	mm: avoid overflows in dirty throttling logic	2024-07-03 12:29:24 -07:00
pagewalk.c	mm: pagewalk: assert write mmap lock only for walking the user page tables	2023-12-10 16:51:53 -08:00
percpu-internal.h	mm: percpu: add codetag reference into pcpuobj_ext	2024-04-25 20:55:56 -07:00
percpu-km.c
percpu-stats.c
percpu-vm.c	percpu: clean up all mappings when pcpu_map_pages() fails	2024-04-25 20:55:49 -07:00
percpu.c	mm: percpu: enable per-cpu allocation tagging	2024-04-25 20:55:56 -07:00
pgalloc-track.h
pgtable-generic.c	mm: fix race between __split_huge_pmd_locked() and GUP-fast	2024-05-07 10:37:00 -07:00
process_vm_access.c	mm: fix process_vm_rw page counts	2023-12-10 16:51:39 -08:00
ptdump.c	mm: ptdump: add check_wx_pages debugfs attribute	2024-02-22 10:24:47 -08:00
readahead.c	The usual shower of singleton fixes and minor series all over MM,	2024-05-19 09:21:03 -07:00
rmap.c	mm: do not update memcg stats for NR_{FILE/SHMEM}_PMDMAPPED	2024-05-11 15:41:35 -07:00
rodata_test.c
secretmem.c
shmem_quota.c	tmpfs: fix race on handling dquot rbtree	2024-03-26 11:07:23 -07:00
shmem.c	mm: shmem: fix getting incorrect lruvec when replacing a shmem folio	2024-06-15 10:43:08 -07:00
show_mem.c	lib: add memory allocations report in show_mem()	2024-04-25 20:55:57 -07:00
shrinker_debug.c
shrinker.c	mm: shrinker: use kvzalloc_node() from expand_one_shrinker_info()	2024-01-05 09:58:32 -08:00
shuffle.c
shuffle.h	mm, treewide: rename MAX_ORDER to MAX_PAGE_ORDER	2024-01-08 15:27:15 -08:00
slab_common.c	The usual shower of singleton fixes and minor series all over MM,	2024-05-19 09:21:03 -07:00
slab.h	The usual shower of singleton fixes and minor series all over MM,	2024-05-19 09:21:03 -07:00
slub.c	mm/slab: fix 'variable obj_exts set but not used' warning	2024-06-24 20:52:09 -07:00
sparse-vmemmap.c
sparse.c	mm/sparse: guard the size of mem_section is power of 2	2024-05-05 17:53:40 -07:00
swap_cgroup.c
swap_slots.c	mm: swap: update get_swap_pages() to take folio order	2024-04-25 20:56:37 -07:00
swap_state.c	mm: remove struct page from get_shadow_from_swap_cache	2024-04-25 20:56:40 -07:00
swap.c	mm: add kernel-doc for folio_mark_accessed()	2024-05-05 17:53:50 -07:00
swap.h	mm/swap: fix race when skipping swapcache	2024-02-20 14:20:48 -08:00
swapfile.c	getting rid of bogus set_blocksize() uses, switching it	2024-05-21 08:34:51 -07:00
truncate.c	mm: convert pagecache_isize_extended to use a folio	2024-04-25 20:56:43 -07:00
usercopy.c
userfaultfd.c	The usual shower of singleton fixes and minor series all over MM,	2024-05-19 09:21:03 -07:00
util.c	hardening fixes for v6.10-rc5	2024-06-17 12:00:22 -07:00
vmalloc.c	mm: fix incorrect vbq reference in purge_fragmented_block	2024-06-24 20:52:08 -07:00
vmpressure.c
vmscan.c	mm: drop the 'anon_' prefix for swap-out mTHP counters	2024-06-05 19:19:23 -07:00
vmstat.c	iommu: observability of the IOMMU allocations	2024-04-15 14:31:47 +02:00
workingset.c	mm: cleanup WORKINGSET_NODES in workingset	2024-05-07 10:36:59 -07:00
z3fold.c	mm: zpool: return pool size in pages	2024-04-25 20:55:48 -07:00
zbud.c	mm: zpool: return pool size in pages	2024-04-25 20:55:48 -07:00
zpool.c	mm: zpool: return pool size in pages	2024-04-25 20:55:48 -07:00
zsmalloc.c	mm: zpool: return pool size in pages	2024-04-25 20:55:48 -07:00
zswap.c	mm: zswap: remove same_filled module params	2024-05-05 17:53:38 -07:00