Linus Torvalds fe673d3f5b mm: gup: make fault_in_safe_writeable() use fixup_user_fault() ... Instead of using GUP, make fault_in_safe_writeable() actually force a 'handle_mm_fault()' using the same fixup_user_fault() machinery that futexes already use. Using the GUP machinery meant that fault_in_safe_writeable() did not do everything that a real fault would do, ranging from not auto-expanding the stack segment, to not updating accessed or dirty flags in the page tables (GUP sets those flags on the pages themselves). The latter causes problems on architectures (like s390) that do accessed bit handling in software, which meant that fault_in_safe_writeable() didn't actually do all the fault handling it needed to, and trying to access the user address afterwards would still cause faults. Reported-and-tested-by: Andreas Gruenbacher <agruenba@redhat.com> Fixes: cdd591fc86 ("iov_iter: Introduce fault_in_iov_iter_writeable") Link: https://lore.kernel.org/all/CAHc6FU5nP+nziNGG0JAF1FUx-GV7kKFvM7aZuU_XD2_1v4vnvg@mail.gmail.com/ Acked-by: David Hildenbrand <david@redhat.com> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>		2022-03-10 10:48:53 -08:00
..
damon	mm/damon: hide kernel pointer from tracepoint event	2022-01-15 16:30:33 +02:00
kasan	lib/stackdepot: always do filter_irq_stacks() in stack_depot_save()	2022-01-22 08:33:38 +02:00
kfence	kfence: make test case compatible with run time set sample interval	2022-02-11 17:55:00 -08:00
Kconfig	mm: hide the FRONTSWAP Kconfig symbol	2022-01-22 08:33:38 +02:00
Kconfig.debug	mm: page table check	2022-01-15 16:30:28 +02:00
Makefile	mm: remove cleancache	2022-01-22 08:33:38 +02:00
backing-dev.c	mm: bdi: initialize bdi_min_ratio when bdi is unregistered	2021-12-10 17:10:56 -08:00
balloon_compaction.c	…
bootmem_info.c	bootmem: Use page->index instead of page->freelist	2022-01-06 12:27:03 +01:00
cma.c	memblock: rename memblock_free to memblock_phys_free	2021-11-06 13:30:41 -07:00
cma.h	…
cma_debug.c	…
cma_sysfs.c	…
compaction.c	mm: compaction: fix the migration stats in trace_mm_compaction_migratepages()	2022-01-15 16:30:30 +02:00
debug.c	mm,fs: split dump_mapping() out from dump_page()	2022-01-15 16:30:26 +02:00
debug_page_ref.c	…
debug_vm_pgtable.c	mm/debug_vm_pgtable: remove pte entry from the page table	2022-02-04 09:25:04 -08:00
dmapool.c	mm/dmapool.c: revert "make dma pool to use kmalloc_node"	2022-01-15 16:30:28 +02:00
early_ioremap.c	…
fadvise.c	…
failslab.c	…
filemap.c	Merge branch 'akpm' (patches from Andrew)	2022-01-22 11:28:23 +02:00
folio-compat.c	filemap: Add filemap_release_folio()	2022-01-04 13:15:34 -05:00
frontswap.c	frontswap: remove support for multiple ops	2022-01-22 08:33:38 +02:00
gup.c	mm: gup: make fault_in_safe_writeable() use fixup_user_fault()	2022-03-10 10:48:53 -08:00
gup_test.c	…
gup_test.h	…
highmem.c	Fixes for 5.16 folios:	2021-11-25 10:13:56 -08:00
hmm.c	mm/hmm.c: allow VM_MIXEDMAP to work with hmm_range_fault	2022-01-15 16:30:31 +02:00
huge_memory.c	Merge branch 'akpm' (patches from Andrew)	2022-01-15 20:37:06 +02:00
hugetlb.c	hugetlbfs: fix a truncation issue in hugepages parameter	2022-02-26 09:51:17 -08:00
hugetlb_cgroup.c	hugetlb: add hugetlb.*.numa_stat file	2022-01-15 16:30:29 +02:00
hugetlb_vmemmap.c	…
hugetlb_vmemmap.h	…
hwpoison-inject.c	…
init-mm.c	…
internal.h	Merge branch 'akpm' (patches from Andrew)	2022-01-15 20:37:06 +02:00
interval_tree.c	…
io-mapping.c	…
ioremap.c	…
khugepaged.c	mm/page_table_check: check entries at pmd levels	2022-02-04 09:25:04 -08:00
kmemleak.c	mm/kmemleak: avoid scanning potential huge holes	2022-02-04 09:25:05 -08:00
ksm.c	mm: ksm: fix use-after-free kasan report in ksm_might_need_to_copy	2022-01-15 16:30:31 +02:00
list_lru.c	mm: list_lru: only add memcg-aware lrus to the global lru list	2021-11-06 13:30:35 -07:00
maccess.c	…
madvise.c	mm: fix use-after-free when anon vma name is used after vma is freed	2022-03-05 11:08:32 -08:00
mapping_dirty_helpers.c	mm: move tlb_flush_pending inline helpers to mm_inline.h	2022-01-15 16:30:27 +02:00
memblock.c	memblock: use kfree() to release kmalloced memblock regions	2022-02-20 08:45:39 +02:00
memcontrol.c	mm: memcg: synchronize objcg lists with a dedicated spinlock	2022-02-11 17:55:00 -08:00
memfd.c	memfd: fix F_SEAL_WRITE after shmem huge page allocated	2022-03-05 11:08:32 -08:00
memory-failure.c	memory-failure: fetch compound_head after pgmap_pfn_valid()	2022-01-30 09:56:58 +02:00
memory.c	Merge branch 'akpm' (patches from Andrew)	2022-01-20 10:41:01 +02:00
memory_hotplug.c	treewide: Add missing includes masked by cgroup -> bpf dependency	2021-12-03 10:58:13 -08:00
mempolicy.c	mm: refactor vm_area_struct::anon_vma_name usage code	2022-03-05 11:08:32 -08:00
mempool.c	…
memremap.c	Merge branch 'akpm' (patches from Andrew)	2022-01-15 20:37:06 +02:00
memtest.c	…
migrate.c	mm/migrate.c: rework migration_entry_wait() to not take a pageref	2022-01-22 08:33:34 +02:00
mincore.c	…
mlock.c	mm: refactor vm_area_struct::anon_vma_name usage code	2022-03-05 11:08:32 -08:00
mm_init.c	…
mmap.c	mm: refactor vm_area_struct::anon_vma_name usage code	2022-03-05 11:08:32 -08:00
mmap_lock.c	…
mmu_gather.c	mm: move tlb_flush_pending inline helpers to mm_inline.h	2022-01-15 16:30:27 +02:00
mmu_notifier.c	…
mmzone.c	…
mprotect.c	mm: refactor vm_area_struct::anon_vma_name usage code	2022-03-05 11:08:32 -08:00
mremap.c	mm, hugepages: add mremap() support for hugepage backed vma	2021-11-06 13:30:39 -07:00
msync.c	…
nommu.c	Merge branch 'akpm' (patches from Andrew)	2021-11-06 14:08:17 -07:00
oom_kill.c	Merge branch 'signal-for-v5.17' of git://git.kernel.org/pub/scm/linux/kernel/git/ebiederm/user-namespace	2022-01-17 05:49:30 +02:00
page-writeback.c	mm/writeback: Improve __folio_mark_dirty() comment	2022-01-02 20:28:57 -05:00
page_alloc.c	Merge branch 'akpm' (patches from Andrew)	2022-01-20 10:41:01 +02:00
page_counter.c	mm/page_counter: remove an incorrect call to propagate_protected_usage()	2022-01-15 16:30:27 +02:00
page_ext.c	mm: make some vars and functions static or __init	2022-01-15 16:30:31 +02:00
page_idle.c	…
page_io.c	delayacct: support swapin delay accounting for swapping without blkio	2022-01-20 08:52:55 +02:00
page_isolation.c	Revert "mm/page_isolation: unset migratetype directly for non Buddy page"	2022-02-04 09:25:04 -08:00
page_owner.c	lib/stackdepot: allow optional init and stack_table allocation by kvmalloc()	2022-01-22 08:33:37 +02:00
page_poison.c	…
page_reporting.c	…
page_reporting.h	…
page_table_check.c	mm/page_table_check: check entries at pmd levels	2022-02-04 09:25:04 -08:00
page_vma_mapped.c	…
pagewalk.c	…
percpu-internal.h	mm: memcg/percpu: account extra objcg space to memory cgroups	2022-01-15 16:30:31 +02:00
percpu-km.c	…
percpu-stats.c	…
percpu-vm.c	…
percpu.c	bitmap patches for 5.17-rc1	2022-01-23 06:20:44 +02:00
pgalloc-track.h	…
pgtable-generic.c	mm: move tlb_flush_pending inline helpers to mm_inline.h	2022-01-15 16:30:27 +02:00
process_vm_access.c	…
ptdump.c	…
readahead.c	readahead: Convert page_cache_ra_unbounded to folios	2022-01-04 13:15:34 -05:00
rmap.c	mm/rmap: fix potential batched TLB flush race	2022-01-15 16:30:31 +02:00
rodata_test.c	…
secretmem.c	mm/secretmem: avoid letting secretmem_users drop to zero	2021-10-28 17:18:55 -07:00
shmem.c	mm: simplify try_to_unuse	2022-01-22 08:33:38 +02:00
shuffle.c	…
shuffle.h	…
slab.c	mm/kasan: Convert to struct folio and struct slab	2022-01-06 12:26:14 +01:00
slab.h	slab changes for 5.17 - part 2	2022-01-18 06:40:47 +02:00
slab_common.c	Merge branch 'akpm' (patches from Andrew)	2022-01-15 20:37:06 +02:00
slob.c	mm/slob: Remove unnecessary page_mapcount_reset() function call	2022-01-06 12:27:28 +01:00
slub.c	mm/slub: Define struct slab fields for CONFIG_SLUB_CPU_PARTIAL only when enabled	2022-01-06 12:26:53 +01:00
sparse-vmemmap.c	mm: remove redundant smp_wmb()	2021-11-06 13:30:36 -07:00
sparse.c	bootmem: Use page->index instead of page->freelist	2022-01-06 12:27:03 +01:00
swap.c	Merge branch 'akpm' (patches from Andrew)	2022-01-15 20:37:06 +02:00
swap_cgroup.c	…
swap_slots.c	treewide: Add missing includes masked by cgroup -> bpf dependency	2021-12-03 10:58:13 -08:00
swap_state.c	…
swapfile.c	mm: mark swap_lock and swap_active_head static	2022-01-22 08:33:38 +02:00
truncate.c	mm: remove cleancache	2022-01-22 08:33:38 +02:00
usercopy.c	mm: Convert check_heap_object() to use struct slab	2022-01-06 12:25:51 +01:00
userfaultfd.c	mm: shmem: don't truncate page if memory failure happens	2022-01-15 16:30:26 +02:00
util.c	mm: Consider __GFP_NOWARN flag for oversized kvmalloc() calls	2022-03-04 10:00:37 -08:00
vmacache.c	…
vmalloc.c	mm/vmalloc: be more explicit about supported gfp flags.	2022-01-15 16:30:28 +02:00
vmpressure.c	mm/vmpressure: fix data-race with memcg->socket_pressure	2021-11-06 13:30:40 -07:00
vmscan.c	mm: vmscan: remove deadlock due to throttling failing to make progress	2022-02-11 17:55:00 -08:00
vmstat.c	mm/vmstat: add events for THP max_ptes_* exceeds	2022-01-15 16:30:29 +02:00
workingset.c	Merge branch 'akpm' (patches from Andrew)	2021-11-09 10:11:53 -08:00
z3fold.c	…
zbud.c	…
zpool.c	zpool: remove the list of pools_head	2022-01-15 16:30:31 +02:00
zsmalloc.c	zsmalloc: replace get_cpu_var with local_lock	2022-01-22 08:33:37 +02:00
zswap.c	frontswap: remove support for multiple ops	2022-01-22 08:33:38 +02:00