Darrick J. Wong 9fd91a90cb vfs: strengthen checking of file range inputs to generic_remap_checks ... File range remapping, if allowed to run past the destination file's EOF, is an optimization on a regular file write. Regular file writes that extend the file length are subject to various constraints which are not checked by range cloning. This is a correctness problem because we're never allowed to touch ranges that the page cache can't support (s_maxbytes); we're not supposed to deal with large offsets (MAX_NON_LFS) if O_LARGEFILE isn't set; and we must obey resource limits (RLIMIT_FSIZE). Therefore, add these checks to the new generic_remap_checks function so that we curtail unexpected behavior. Signed-off-by: Darrick J. Wong <darrick.wong@oracle.com> Reviewed-by: Amir Goldstein <amir73il@gmail.com> Reviewed-by: Christoph Hellwig <hch@lst.de> Signed-off-by: Dave Chinner <david@fromorbit.com>		2018-10-30 10:40:46 +11:00
..
kasan	kernel/memremap, kasan: make ZONE_DEVICE with work with KASAN	2018-08-17 16:20:30 -07:00
backing-dev.c	blkcg: delay blkg destruction until after writeback has finished	2018-08-31 14:48:56 -06:00
balloon_compaction.c
bootmem.c	docs/mm: bootmem: add overview documentation	2018-08-02 12:17:27 -06:00
cleancache.c	mm: use octal not symbolic permissions	2018-06-15 07:55:25 +09:00
cma.c	mm/cma: remove unsupported gfp_mask parameter from cma_alloc()	2018-08-17 16:20:32 -07:00
cma.h
cma_debug.c	mm/cma: remove unsupported gfp_mask parameter from cma_alloc()	2018-08-17 16:20:32 -07:00
compaction.c	mm: use octal not symbolic permissions	2018-06-15 07:55:25 +09:00
debug.c	mm: get rid of vmacache_flush_all() entirely	2018-09-13 15:18:04 -10:00
debug_page_ref.c
dmapool.c	mm: use octal not symbolic permissions	2018-06-15 07:55:25 +09:00
early_ioremap.c
fadvise.c	vfs: implement readahead(2) using POSIX_FADV_WILLNEED	2018-08-30 20:01:32 +02:00
failslab.c	mm: use octal not symbolic permissions	2018-06-15 07:55:25 +09:00
filemap.c	vfs: strengthen checking of file range inputs to generic_remap_checks	2018-10-30 10:40:46 +11:00
frame_vector.c	mm/frame_vector.c: release a semaphore in 'get_vaddr_frames()'	2017-12-14 16:00:48 -08:00
frontswap.c	mm: use octal not symbolic permissions	2018-06-15 07:55:25 +09:00
gup.c	mm: Change return type int to vm_fault_t for fault handlers	2018-08-23 18:48:44 -07:00
gup_benchmark.c	mm/gup_benchmark: fix unsigned comparison to zero in __gup_benchmark_ioctl	2018-10-05 16:32:04 -07:00
highmem.c
hmm.c	libnvdimm-for-4.19_dax-memory-failure	2018-08-25 18:43:59 -07:00
huge_memory.c	mremap: properly flush TLB before releasing the page	2018-10-18 11:30:52 +02:00
hugetlb.c	hugetlb: take PMD sharing into account when flushing tlb/caches	2018-10-05 16:32:04 -07:00
hugetlb_cgroup.c	mm: rename page_counter's count/limit into usage/max	2018-06-07 17:34:35 -07:00
hwpoison-inject.c	mm/memory_failure: Remove unused trapno from memory_failure	2018-01-23 12:17:42 -06:00
init-mm.c	mm: Allocate the mm_cpumask (mm->cpu_bitmap[]) dynamically based on nr_cpu_ids	2018-07-17 09:35:30 +02:00
internal.h	mm: Change return type int to vm_fault_t for fault handlers	2018-08-23 18:48:44 -07:00
interval_tree.c	mm/interval_tree.c: use vma_pages() helper	2018-01-31 17:18:37 -08:00
Kconfig	mm: disable deferred struct page for 32-bit arches	2018-09-20 22:01:11 +02:00
Kconfig.debug	mm: clarify CONFIG_PAGE_POISONING and usage	2018-08-22 10:52:44 -07:00
khugepaged.c	mm: Change return type int to vm_fault_t for fault handlers	2018-08-23 18:48:44 -07:00
kmemleak-test.c
kmemleak.c	kmemleak: always register debugfs file	2018-09-04 16:45:02 -07:00
ksm.c	include/linux/compiler*.h: make compiler-*.h mutually exclusive	2018-08-22 17:31:34 -07:00
list_lru.c	mm/list_lru: introduce list_lru_shrink_walk_irq()	2018-08-17 16:20:32 -07:00
maccess.c	mm: docs: fix parameter names mismatch	2018-02-06 18:32:48 -08:00
madvise.c	mm: madvise(MADV_DODUMP): allow hugetlbfs pages	2018-10-05 16:32:05 -07:00
Makefile	vfs: implement readahead(2) using POSIX_FADV_WILLNEED	2018-08-30 20:01:32 +02:00
memblock.c	mm/memblock.c: replace u64 with phys_addr_t where appropriate	2018-08-17 16:20:30 -07:00
memcontrol.c	mm: memcontrol: print proper OOM header when no eligible victim left	2018-09-04 16:45:02 -07:00
memfd.c	alloc_file(): switch to passing O_... flags instead of FMODE_... mode	2018-07-12 10:02:57 -04:00
memory-failure.c	libnvdimm-for-4.19_dax-memory-failure	2018-08-25 18:43:59 -07:00
memory.c	mm/cow: don't bother write protecting already write-protected pages	2018-08-25 13:15:03 -07:00
memory_hotplug.c	mm/hugetlb: filter out hugetlb pages if HUGEPAGE migration is not supported.	2018-09-04 16:45:02 -07:00
mempolicy.c	mm: access zone->node via zone_to_nid() and zone_set_nid()	2018-08-22 10:52:45 -07:00
mempool.c	mm/mempool.c: add missing parameter description	2018-08-22 10:52:44 -07:00
memtest.c
migrate.c	Merge branch 'akpm'	2018-10-05 16:33:03 -07:00
mincore.c
mlock.c	dax: remove VM_MIXEDMAP for fsdax and device dax	2018-08-17 16:20:27 -07:00
mm_init.c	mm: access zone->node via zone_to_nid() and zone_set_nid()	2018-08-22 10:52:45 -07:00
mmap.c	mm/mmap.c: don't clobber partially overlapping VMA with MAP_FIXED_NOREPLACE	2018-10-13 09:31:02 +02:00
mmu_context.c
mmu_notifier.c	mm, oom: distinguish blockable mode for mmu notifiers	2018-08-22 10:52:44 -07:00
mmzone.c
mprotect.c	x86/speculation/l1tf: Disallow non privileged high MMIO PROT_NONE mappings	2018-06-20 19:10:01 +02:00
mremap.c	mremap: properly flush TLB before releasing the page	2018-10-18 11:30:52 +02:00
msync.c
nobootmem.c	mm/memblock: add a name for memblock flags enumeration	2018-08-02 12:17:27 -06:00
nommu.c	mm: provide a fallback for PAGE_KERNEL_EXEC for architectures	2018-08-17 16:20:29 -07:00
oom_kill.c	mm, oom: fix missing tlb_finish_mmu() in __oom_reap_task_mm().	2018-09-04 16:45:02 -07:00
page-writeback.c	notifier: Remove notifier header file wherever not used	2018-08-30 12:56:40 +02:00
page_alloc.c	mm, sched/numa: Remove remaining traces of NUMA rate-limiting	2018-10-09 08:30:51 +02:00
page_counter.c	memcg: introduce memory.min	2018-06-07 17:34:36 -07:00
page_ext.c	mm/page_ext.c: constify lookup_page_ext() argument	2018-08-17 16:20:28 -07:00
page_idle.c	mm: use octal not symbolic permissions	2018-06-15 07:55:25 +09:00
page_io.c	swap,blkcg: issue swap io with the appropriate context	2018-07-09 09:07:54 -06:00
page_isolation.c	mm, migrate: remove reason argument from new_page_t	2018-04-11 10:28:32 -07:00
page_owner.c	mm: use octal not symbolic permissions	2018-06-15 07:55:25 +09:00
page_poison.c	mm/page_poison.c: make early_page_poison_param() __init	2018-04-05 21:36:26 -07:00
page_vma_mapped.c	mm, page_vma_mapped: Introduce pfn_in_hpage()	2018-01-22 12:15:57 -08:00
pagewalk.c	mm: kernel-doc: add missing parameter descriptions	2018-04-05 21:36:27 -07:00
percpu-internal.h
percpu-km.c	percpu: allow select gfp to be passed to underlying allocators	2018-02-18 05:33:01 -08:00
percpu-stats.c	treewide: Use array_size() in vmalloc()	2018-06-12 16:19:22 -07:00
percpu-vm.c	percpu: allow select gfp to be passed to underlying allocators	2018-02-18 05:33:01 -08:00
percpu.c	percpu: stop leaking bitmap metadata blocks	2018-10-07 14:50:12 -07:00
pgtable-generic.c	mm: do not lose dirty and accessed bits in pmdp_invalidate()	2018-01-31 17:18:38 -08:00
process_vm_access.c	mm: docs: add blank lines to silence sphinx "Unexpected indentation" errors	2018-02-06 18:32:48 -08:00
quicklist.c
readahead.c	vfs: implement readahead(2) using POSIX_FADV_WILLNEED	2018-08-30 20:01:32 +02:00
rmap.c	mm: migration: fix migration of huge PMD shared pages	2018-10-05 16:32:04 -07:00
rodata_test.c
shmem.c	mm: shmem.c: Correctly annotate new inodes for lockdep	2018-09-20 22:01:11 +02:00
slab.c	treewide: kzalloc() -> kcalloc()	2018-06-12 16:19:22 -07:00
slab.h	mm: introduce CONFIG_MEMCG_KMEM as combination of CONFIG_MEMCG && !CONFIG_SLOB	2018-08-17 16:20:30 -07:00
slab_common.c	mm: introduce CONFIG_MEMCG_KMEM as combination of CONFIG_MEMCG && !CONFIG_SLOB	2018-08-17 16:20:30 -07:00
slob.c	slab: __GFP_ZERO is incompatible with a constructor	2018-06-07 17:34:34 -07:00
slub.c	notifier: Remove notifier header file wherever not used	2018-08-30 12:56:40 +02:00
sparse-vmemmap.c	mm/sparse: delete old sparse_init and enable new one	2018-08-17 16:20:32 -07:00
sparse.c	mm/sparse: delete old sparse_init and enable new one	2018-08-17 16:20:32 -07:00
swap.c	mm: introduce MEMORY_DEVICE_FS_DAX and CONFIG_DEV_PAGEMAP_OPS	2018-05-22 06:59:39 -07:00
swap_cgroup.c
swap_slots.c	mm, swap, get_swap_pages: use entry_size instead of cluster in parameter	2018-08-22 10:52:44 -07:00
swap_state.c	treewide: kvzalloc() -> kvcalloc()	2018-06-12 16:19:22 -07:00
swapfile.c	mm/swapfile.c: put_swap_page: share more between huge/normal code path	2018-08-22 10:52:44 -07:00
truncate.c	page cache: use xa_lock	2018-04-11 10:28:39 -07:00
usercopy.c	usercopy: Allow boot cmdline disabling of hardening	2018-07-04 08:04:52 -07:00
userfaultfd.c	userfaultfd: prevent non-cooperative events vs mcopy_atomic races	2018-06-07 17:34:38 -07:00
util.c	mm/util.c: improve kvfree() kerneldoc	2018-09-04 16:45:02 -07:00
vmacache.c	mm: get rid of vmacache_flush_all() entirely	2018-09-13 15:18:04 -10:00
vmalloc.c	mm: provide a fallback for PAGE_KERNEL_EXEC for architectures	2018-08-17 16:20:29 -07:00
vmpressure.c	mm/vmpressure.c: convert to use match_string() helper	2018-06-07 17:34:36 -07:00
vmscan.c	mm/vmscan.c: fix int overflow in callers of do_shrink_slab()	2018-10-05 16:32:05 -07:00
vmstat.c	mm/vmstat.c: skip NR_TLB_REMOTE_FLUSH* properly	2018-10-05 16:32:05 -07:00
workingset.c	mm/list_lru: introduce list_lru_shrink_walk_irq()	2018-08-17 16:20:32 -07:00
z3fold.c	z3fold: fix reclaim lock-ups	2018-05-11 17:28:45 -07:00
zbud.c	mm: docs: fix parameter names mismatch	2018-02-06 18:32:48 -08:00
zpool.c	mm/zpool.c: zpool_evictable: fix mismatch in parameter name and kernel-doc	2018-02-21 15:35:43 -08:00
zsmalloc.c	mm/zsmalloc.c: make several functions and a struct static	2018-08-17 16:20:30 -07:00
zswap.c	zswap: re-check zswap_is_full() after do zswap_shrink()	2018-07-26 19:38:03 -07:00