Repository files (latest commit first)

Filename	Latest commit message	Latest commit date
Jan Kara 4d3817b64e mm: avoid overflows in dirty throttling logic ... [ Upstream commit 385d838df280eba6c8680f9777bfa0d0bfe7e8b2 ] 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> Signed-off-by: Sasha Levin <sashal@kernel.org>		2024-08-19 05:33:42 +02:00
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kasan	panic: Consolidate open-coded panic_on_warn checks	2023-02-06 07:52:50 +01:00
backing-dev.c
balloon_compaction.c
cleancache.c
cma.c	mm/cma: use nth_page() in place of direct struct page manipulation	2023-11-28 16:50:19 +00:00
cma.h
cma_debug.c
compaction.c	mm, vmscan: prevent infinite loop for costly GFP_NOIO | __GFP_RETRY_MAYFAIL allocations	2024-04-13 12:51:34 +02:00
debug.c
debug_page_ref.c
dmapool.c
early_ioremap.c
fadvise.c
failslab.c
filemap.c	mm: allow a controlled amount of unfairness in the page lock	2023-08-30 16:27:26 +02:00
frame_vector.c	v4l2: don't fall back to follow_pfn() if pin_user_pages_fast() fails	2022-12-08 11:23:06 +01:00
frontswap.c	treewide: Remove uninitialized_var() usage	2023-06-09 10:29:01 +02:00
gup.c	mm/hugetlb: fix races when looking up a CONT-PTE/PMD size hugetlb page	2022-12-19 12:24:15 +01:00
gup_benchmark.c
highmem.c
hmm.c
huge_memory.c	mm/thp: check and bail out if page in deferred queue already	2023-03-11 16:44:05 +01:00
hugetlb.c	mm/hugetlb: fix races when looking up a CONT-PTE/PMD size hugetlb page	2022-12-19 12:24:15 +01:00
hugetlb_cgroup.c
hwpoison-inject.c
init-mm.c
internal.h
interval_tree.c
Kconfig
Kconfig.debug
khugepaged.c	mm/khugepaged: fix collapse_pte_mapped_thp() to allow anon_vma	2023-01-24 07:18:01 +01:00
kmemleak-test.c
kmemleak.c	Revert "mm: kmemleak: take a full lowmem check in kmemleak_*_phys()"	2022-09-15 12:04:49 +02:00
ksm.c	treewide: Remove uninitialized_var() usage	2023-06-09 10:29:01 +02:00
list_lru.c
maccess.c
madvise.c	mm: fix madivse_pageout mishandling on non-LRU page	2022-10-05 10:37:43 +02:00
Makefile
memblock.c	Revert "mm: Always release pages to the buddy allocator in memblock_free_late()."	2023-02-22 12:50:39 +01:00
memcontrol.c	memcg: add refcnt for pcpu stock to avoid UAF problem in drain_all_stock()	2024-03-01 13:13:32 +01:00
memfd.c	memfd: fix F_SEAL_WRITE after shmem huge page allocated	2022-03-08 19:07:49 +01:00
memory-failure.c	mm/memory-failure: fix an incorrect use of tail pages	2024-04-13 12:51:31 +02:00
memory.c	x86/mm/pat: fix VM_PAT handling in COW mappings	2024-04-13 12:51:40 +02:00
memory_hotplug.c
mempolicy.c	treewide: Remove uninitialized_var() usage	2023-06-09 10:29:01 +02:00
mempool.c
memremap.c
memtest.c	memtest: use {READ,WRITE}_ONCE in memory scanning	2024-04-13 12:51:27 +02:00
migrate.c	mm/migrate: set swap entry values of THP tail pages properly.	2024-04-13 12:51:31 +02:00
mincore.c
mlock.c
mm_init.c
mmap.c	mm: Fix TLB flush for not-first PFNMAP mappings in unmap_region()	2022-09-20 12:28:00 +02:00
mmu_context.c
mmu_gather.c	mm/khugepaged: fix GUP-fast interaction by sending IPI	2022-12-14 11:30:42 +01:00
mmu_notifier.c
mmzone.c	arm: remove CONFIG_ARCH_HAS_HOLES_MEMORYMODEL	2022-05-15 19:54:46 +02:00
mprotect.c
mremap.c	mm/mremap: hold the rmap lock in write mode when moving page table entries.	2022-08-25 11:17:20 +02:00
msync.c
nommu.c
oom_kill.c	oom_kill.c: futex: delay the OOM reaper to allow time for proper futex cleanup	2022-04-27 13:50:48 +02:00
page-writeback.c	mm: avoid overflows in dirty throttling logic	2024-08-19 05:33:42 +02:00
page_alloc.c	mm, vmscan: prevent infinite loop for costly GFP_NOIO | __GFP_RETRY_MAYFAIL allocations	2024-04-13 12:51:34 +02:00
page_counter.c
page_ext.c
page_idle.c
page_io.c	mm: fix unexpected zeroed page mapping with zram swap	2022-05-12 12:23:48 +02:00
page_isolation.c
page_owner.c
page_poison.c
page_vma_mapped.c
pagewalk.c	mm: pagewalk: Fix race between unmap and page walker	2022-10-15 07:54:36 +02:00
percpu-internal.h
percpu-km.c
percpu-stats.c
percpu-vm.c
percpu.c	treewide: Remove uninitialized_var() usage	2023-06-09 10:29:01 +02:00
pgtable-generic.c
process_vm_access.c
readahead.c	vfs: fix readahead(2) on block devices	2023-11-20 10:30:08 +01:00
rmap.c	mm/rmap: Fix anon_vma->degree ambiguity leading to double-reuse	2022-09-05 10:27:46 +02:00
rodata_test.c
shmem.c	tmpfs: verify {g,u}id mount options correctly	2023-09-23 10:59:40 +02:00
shuffle.c
shuffle.h
slab.c
slab.h
slab_common.c
slob.c
slub.c	treewide: Remove uninitialized_var() usage	2023-06-09 10:29:01 +02:00
sparse-vmemmap.c
sparse.c
swap.c	treewide: Remove uninitialized_var() usage	2023-06-09 10:29:01 +02:00
swap_cgroup.c
swap_slots.c
swap_state.c
swapfile.c	mm/swap: fix swap_info_struct race between swapoff and get_swap_pages()	2023-04-20 12:07:35 +02:00
truncate.c
usercopy.c	mm/usercopy: return 1 from hardened_usercopy __setup() handler	2022-04-15 14:18:30 +02:00
userfaultfd.c	userfaultfd: fix mmap_changing checking in mfill_atomic_hugetlb	2024-03-01 13:13:33 +01:00
util.c	random: move randomize_page() into mm where it belongs	2022-06-22 14:11:17 +02:00
vmacache.c
vmalloc.c
vmpressure.c
vmscan.c	mm, vmscan: prevent infinite loop for costly GFP_NOIO | __GFP_RETRY_MAYFAIL allocations	2024-04-13 12:51:34 +02:00
vmstat.c	arm: remove CONFIG_ARCH_HAS_HOLES_MEMORYMODEL	2022-05-15 19:54:46 +02:00
workingset.c
z3fold.c
zbud.c
zpool.c
zsmalloc.c	zsmalloc: fix races between asynchronous zspage free and page migration	2022-06-06 08:33:50 +02:00
zswap.c