Pedro Falcato 09aec5f9b2 mm: kmsan: panic on failure to allocate early boot metadata ... Given large enough allocations and a machine with low enough memory (i.e a default QEMU VM), it's entirely possible that kmsan_init_alloc_meta_for_range's shadow+origin allocation fails. Instead of eating a NULL deref kernel oops, check explicitly for memblock_alloc() failure and panic with a nice error message. Alexander Potapenko said: For posterity, it is generally quite important for the allocated shadow and origin to be contiguous, otherwise an unaligned memory write may result in memory corruption (the corresponding unaligned shadow write will be assuming that shadow pages are adjacent). So instead of panicking we could have split the range into smaller ones until the allocation succeeds, but that would've led to hard-to-debug problems in the future. Link: https://lkml.kernel.org/r/20231016153446.132763-1-pedro.falcato@gmail.com Signed-off-by: Pedro Falcato <pedro.falcato@gmail.com> Reviewed-by: Alexander Potapenko <glider@google.com> Cc: Dmitry Vyukov <dvyukov@google.com> Cc: Marco Elver <elver@google.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org>		2023-10-25 16:47:10 -07:00
..
damon	mm/damon/sysfs: avoid empty scheme tried regions for large apply interval	2023-10-18 14:34:19 -07:00
kasan	mm: delete checks for xor_unlock_is_negative_byte()	2023-10-18 14:34:17 -07:00
kfence	LoongArch changes for v6.6	2023-09-08 12:16:52 -07:00
kmsan	mm: kmsan: panic on failure to allocate early boot metadata	2023-10-25 16:47:10 -07:00
backing-dev.c	writeback: remove redundant checks for root memcg	2023-08-21 13:37:48 -07:00
balloon_compaction.c
bootmem_info.c
cma_debug.c
cma_sysfs.c	mm: cma: make kobj_type structure constant	2023-03-28 16:20:06 -07:00
cma.c	mm/cma: use nth_page() in place of direct struct page manipulation	2023-10-04 10:32:29 -07:00
cma.h
compaction.c	mm/compaction: factor out code to test if we should run compaction for target order	2023-10-04 10:32:19 -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	Add x86 shadow stack support	2023-08-31 12:20:12 -07:00
debug.c	mm: update validate_mm() to use vma iterator	2023-06-09 16:25:31 -07:00
dmapool_test.c	dmapool: add alloc/free performance test	2023-04-05 19:42:38 -07:00
dmapool.c	dmapool: create/destroy cleanup	2023-06-09 16:25:17 -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	mm: drop the assumption that VM_SHARED always implies writable	2023-10-18 14:34:19 -07:00
folio-compat.c	filemap: Add fgf_t typedef	2023-07-24 18:04:30 -04:00
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
gup.c	mm/gup: make failure to pin an error if FOLL_NOWAIT not specified	2023-10-18 14:34:15 -07:00
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/thp: fix "mm: thp: kill __transhuge_page_enabled()"	2023-10-18 14:34:18 -07:00
hugetlb_cgroup.c	mm, hugetlb: remove HUGETLB_CGROUP_MIN_ORDER	2023-10-18 14:34:17 -07:00
hugetlb_vmemmap.c	hugetlb_vmemmap: use folio argument for hugetlb_vmemmap_* functions	2023-10-25 16:47:08 -07:00
hugetlb_vmemmap.h	hugetlb_vmemmap: use folio argument for hugetlb_vmemmap_* functions	2023-10-25 16:47:08 -07:00
hugetlb.c	hugetlb_vmemmap: use folio argument for hugetlb_vmemmap_* functions	2023-10-25 16:47:08 -07:00
hwpoison-inject.c
init-mm.c	mm: move dummy_vm_ops out of a header	2023-08-21 13:37:46 -07:00
internal.h	mm: abstract VMA merge and extend into vma_merge_extend() helper	2023-10-18 14:34:18 -07:00
interval_tree.c
io-mapping.c
ioremap.c	mm: ioremap: remove unneeded ioremap_allowed and iounmap_allowed	2023-08-18 10:12:36 -07:00
Kconfig	zswap: change zswap's default allocator to zsmalloc	2023-10-04 10:32:20 -07:00
Kconfig.debug	mm: page_table_check: Make it dependent on EXCLUSIVE_SYSTEM_RAM	2023-05-29 16:14:28 +01:00
khugepaged.c	- Some swap cleanups from Ma Wupeng ("fix WARN_ON in add_to_avail_list")	2023-08-29 14:25:26 -07:00
kmemleak.c	mm/kmemleak: move up cond_resched() call in page scanning loop	2023-09-02 15:17:34 -07:00
ksm.c	mm/ksm: add pages_skipped metric	2023-10-16 15:44:39 -07:00
list_lru.c
maccess.c	mm: Fix copy_from_user_nofault().	2023-04-12 17:36:23 -07:00
madvise.c	mm: drop the assumption that VM_SHARED always implies writable	2023-10-18 14:34:19 -07:00
Makefile	mm: vmscan: move shrinker-related code into a separate file	2023-10-04 10:32:23 -07:00
mapping_dirty_helpers.c	mm: fix clean_record_shared_mapping_range kernel-doc	2023-08-24 16:20:30 -07:00
memblock.c	memblock: introduce MEMBLOCK_RSRV_NOINIT flag	2023-10-04 10:32:30 -07:00
memcontrol.c	hugetlb: memcg: account hugetlb-backed memory in memory controller	2023-10-18 14:34:17 -07:00
memfd.c	memfd: drop warning for missing exec-related flags	2023-10-04 10:32:22 -07:00
memory_hotplug.c	mm/memory_hotplug: use pfn math in place of direct struct page manipulation	2023-10-04 10:32:29 -07:00
memory-failure.c	mm: convert DAX lock/unlock page to lock/unlock folio	2023-10-04 10:32:20 -07:00
memory-tiers.c	dax, kmem: calculate abstract distance with general interface	2023-10-16 15:44:39 -07:00
memory.c	mm/gup: adapt get_user_page_vma_remote() to never return NULL	2023-10-18 14:34:15 -07:00
mempolicy.c	mm: abstract the vma_merge()/split_vma() pattern for mprotect() et al.	2023-10-18 14:34:18 -07:00
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: convert to memtest_report_meminfo()	2023-08-21 13:37:47 -07:00
migrate_device.c	Add x86 shadow stack support	2023-08-31 12:20:12 -07:00
migrate.c	hugetlb: memcg: account hugetlb-backed memory in memory controller	2023-10-18 14:34:17 -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: abstract the vma_merge()/split_vma() pattern for mprotect() et al.	2023-10-18 14:34:18 -07:00
mm_init.c	mm: hugetlb: skip initialization of gigantic tail struct pages if freed by HVO	2023-10-04 10:32:30 -07:00
mm_slot.h
mmap_lock.c
mmap.c	mm: perform the mapping_map_writable() check after call_mmap()	2023-10-18 14:34:19 -07:00
mmu_gather.c	mm: fix kernel-doc warning from tlb_flush_rmaps()	2023-08-24 16:20:30 -07:00
mmu_notifier.c	mmu_notifiers: rename invalidate_range notifier	2023-08-18 10:12:41 -07:00
mmzone.c
mprotect.c	mm: abstract the vma_merge()/split_vma() pattern for mprotect() et al.	2023-10-18 14:34:18 -07:00
mremap.c	mm: abstract VMA merge and extend into vma_merge_extend() helper	2023-10-18 14:34:18 -07:00
msync.c
nommu.c	mm: make vma_merge() and split_vma() internal	2023-10-18 14:34:18 -07:00
oom_kill.c	mm: remove redundant K() macro definition	2023-08-21 13:37:44 -07:00
page_alloc.c	mm/page_alloc: remove unnecessary next_page in break_down_buddy_pages	2023-10-18 14:34:15 -07:00
page_counter.c
page_ext.c	mm/page_ext: move functions around for minor cleanups to page_ext	2023-08-18 10:12:31 -07:00
page_idle.c
page_io.c	mm: memcg: add THP swap out info for anonymous reclaim	2023-10-04 10:32:27 -07:00
page_isolation.c	mm/hugetlb: get rid of page_hstate()	2023-08-18 10:12:39 -07:00
page_owner.c	mm/page_owner: remove free_ts from page_owner output	2023-10-18 14:34:19 -07:00
page_poison.c	mm/page_poison: remove unused page_ext.h from page_poison	2023-08-21 13:37:30 -07:00
page_reporting.c	mm, treewide: redefine MAX_ORDER sanely	2023-04-05 19:42:46 -07:00
page_reporting.h
page_table_check.c	mm: convert page_table_check_pte_set() to page_table_check_ptes_set()	2023-08-24 16:20:18 -07:00
page_vma_mapped.c	mm: correct stale comment of function check_pte	2023-08-18 10:12:13 -07:00
page-writeback.c	mm: use folio_xor_flags_has_waiters() in folio_end_writeback()	2023-10-18 14:34:17 -07:00
pagewalk.c	mm/pagewalk: fix bootstopping regression from extra pte_unmap()	2023-09-02 08:39:21 -07:00
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/percpu.c: print error message too if atomic alloc failed	2023-08-25 08:04:59 -07:00
pgalloc-track.h
pgtable-generic.c	mm/pgtable: notes on pte_offset_map[_lock]()	2023-08-18 10:12:25 -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	filemap: Allow __filemap_get_folio to allocate large folios	2023-07-24 18:04:30 -04:00
rmap.c	mm/rmap: convert page_move_anon_rmap() to folio_move_anon_rmap()	2023-10-18 14:34:14 -07:00
rodata_test.c
secretmem.c	mm/secretmem: use a folio in secretmem_fault()	2023-08-21 13:38:02 -07:00
shmem_quota.c	shmem: Add default quota limit mount options	2023-08-09 09:15:40 +02:00
shmem.c	mm: update memfd seal write check to include F_SEAL_WRITE	2023-10-18 14:34:19 -07:00
show_mem.c	mm: refactor si_mem_available()	2023-10-04 10:32:19 -07:00
shrinker_debug.c	mm: shrinker: convert shrinker_rwsem to mutex	2023-10-04 10:32:26 -07:00
shrinker.c	mm: shrinker: convert shrinker_rwsem to mutex	2023-10-04 10:32:26 -07:00
shuffle.c
shuffle.h	mm, treewide: redefine MAX_ORDER sanely	2023-04-05 19:42:46 -07:00
slab_common.c	slab fixes for 6.6-rc4	2023-09-29 12:10:12 -07:00
slab.c	Randomized slab caches for kmalloc()	2023-07-18 10:07:47 +02:00
slab.h	Randomized slab caches for kmalloc()	2023-07-18 10:07:47 +02:00
slub.c	mm/slub: remove freelist_dereference()	2023-07-14 09:57:21 +02:00
sparse-vmemmap.c	mm/vmemmap: allow architectures to override how vmemmap optimization works	2023-08-18 10:12:53 -07:00
sparse.c	mm/sparse: remove redundant judgments from macro for_each_present_section_nr	2023-08-18 10:12:14 -07:00
swap_cgroup.c
swap_slots.c
swap_state.c	mm/swap: inline folio_set_swap_entry() and folio_swap_entry()	2023-08-24 16:20:28 -07:00
swap.c	mm: remove references to pagevec	2023-06-23 16:59:30 -07:00
swap.h	swap: remove remnants of polling from read_swap_cache_async	2023-08-24 16:20:16 -07:00
swapfile.c	mm/swap: inline folio_set_swap_entry() and folio_swap_entry()	2023-08-24 16:20:28 -07:00
truncate.c	- Some swap cleanups from Ma Wupeng ("fix WARN_ON in add_to_avail_list")	2023-08-29 14:25:26 -07:00
usercopy.c	mm: Fix copy_from_user_nofault().	2023-04-12 17:36:23 -07:00
userfaultfd.c	Add x86 shadow stack support	2023-08-31 12:20:12 -07:00
util.c	nilfs2: convert nilfs_copy_page() to nilfs_copy_folio()	2023-10-25 16:47:09 -07:00
vmalloc.c	mm: hugetlb: add huge page size param to set_huge_pte_at()	2023-09-29 17:20:47 -07:00
vmpressure.c	net-memcg: Fix scope of sockmem pressure indicators	2023-08-16 12:21:32 +01:00
vmscan.c	mm: multi-gen LRU: reuse some legacy trace events	2023-10-18 14:34:14 -07:00
vmstat.c	mm: fix draining remote pageset	2023-10-25 16:47:07 -07:00
workingset.c	mm: workingset: dynamically allocate the mm-shadow shrinker	2023-10-04 10:32:24 -07:00
z3fold.c	mm/z3fold: remove obsolete comment for struct z3fold_pool	2023-08-21 13:37:51 -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: use copy_page for full page copy	2023-10-18 14:34:16 -07:00
zswap.c	mm: zswap: fix pool refcount bug around shrink_worker()	2023-10-18 12:12:40 -07:00