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linux-next/mm
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Andy Lutomirski b5d1c39f34 mm/gup.c: remove some BUG_ONs from get_gate_page() 
If we end up without a PGD or PUD entry backing the gate area, don't BUG
-- just fail gracefully.

It's not entirely implausible that this could happen some day on x86.  It
doesn't right now even with an execute-only emulated vsyscall page because
the fixmap shares the PUD, but the core mm code shouldn't rely on that
particular detail to avoid OOPSing.

Link: http://lkml.kernel.org/r/a1d9f4efb75b9d464e59fd6af00104b21c58f6f7.1561610798.git.luto@kernel.org
Signed-off-by: Andy Lutomirski <luto@kernel.org>
Reviewed-by: Kees Cook <keescook@chromium.org>
Reviewed-by: Andrew Morton <akpm@linux-foundation.org>
Cc: Florian Weimer <fweimer@redhat.com>
Cc: Jann Horn <jannh@google.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2019-07-12 11:05:45 -07:00
..
kasan
mm/kasan: change kasan_check_{read,write} to return boolean
2019-07-12 11:05:42 -07:00
backing-dev.c
treewide: Add SPDX license identifier for missed files
2019-05-21 10:50:45 +02:00
balloon_compaction.c
treewide: Add SPDX license identifier for missed files
2019-05-21 10:50:45 +02:00
cleancache.c
treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 482
2019-06-19 17:09:52 +02:00
cma_debug.c
mm/cma_debug.c: fix the break condition in cma_maxchunk_get()
2019-05-14 09:47:45 -07:00
cma.c
treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 98
2019-05-24 17:37:54 +02:00
cma.h
License cleanup: add SPDX GPL-2.0 license identifier to files with no license
2017-11-02 11:10:55 +01:00
compaction.c
mm, compaction: make sure we isolate a valid PFN
2019-06-01 15:51:32 -07:00
debug_page_ref.c
License cleanup: add SPDX GPL-2.0 license identifier to files with no license
2017-11-02 11:10:55 +01:00
debug.c
mm: update references to page _refcount
2019-05-14 19:52:47 -07:00
dmapool.c
treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 403
2019-06-05 17:37:13 +02:00
early_ioremap.c
mm/early_ioremap: Fix boot hang with earlyprintk=efi,keep
2017-12-11 14:54:44 +01:00
fadvise.c
vfs: implement readahead(2) using POSIX_FADV_WILLNEED
2018-08-30 20:01:32 +02:00
failslab.c
mm/failslab.c: by default, do not fail allocations with direct reclaim only
2019-07-12 11:05:43 -07:00
filemap.c
mm/filemap.c: correct the comment about VM_FAULT_RETRY
2019-07-12 11:05:43 -07:00
frame_vector.c
mm/frame_vector.c: release a semaphore in 'get_vaddr_frames()'
2017-12-14 16:00:48 -08:00
frontswap.c
treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 482
2019-06-19 17:09:52 +02:00
gup_benchmark.c
mm/gup: replace get_user_pages_longterm() with FOLL_LONGTERM
2019-05-14 09:47:45 -07:00
gup.c
mm/gup.c: remove some BUG_ONs from get_gate_page()
2019-07-12 11:05:45 -07:00
highmem.c
mm: convert totalram_pages and totalhigh_pages variables to atomic
2018-12-28 12:11:47 -08:00
hmm.c
mm/devm_memremap_pages: fix final page put race
2019-06-13 17:34:56 -10:00
huge_memory.c
Revert "mm: page cache: store only head pages in i_pages"
2019-07-05 19:55:18 -07:00
hugetlb_cgroup.c
mm: rename page_counter's count/limit into usage/max
2018-06-07 17:34:35 -07:00
hugetlb.c
mm: hugetlb: soft-offline: dissolve_free_huge_page() return zero on !PageHuge
2019-06-29 16:43:45 +08:00
hwpoison-inject.c
treewide: Add SPDX license identifier for more missed files
2019-05-21 10:50:45 +02:00
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
treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 152
2019-05-30 11:26:32 -07:00
interval_tree.c
treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 248
2019-06-19 17:09:08 +02:00
Kconfig
mm: move the powerpc hugepd code to mm/gup.c
2019-07-12 11:05:45 -07:00
Kconfig.debug
mm, debug_pagealloc: use a page type instead of page_ext flag
2019-07-12 11:05:43 -07:00
khugepaged.c
Revert "mm: page cache: store only head pages in i_pages"
2019-07-05 19:55:18 -07:00
kmemleak-test.c
treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 333
2019-06-05 17:37:06 +02:00
kmemleak.c
mm/kmemleak.c: change error at _write when kmemleak is disabled
2019-07-12 11:05:42 -07:00
ksm.c
treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 482
2019-06-19 17:09:52 +02:00
list_lru.c
mm: memcg/slab: stop setting page->mem_cgroup pointer for slab pages
2019-07-12 11:05:44 -07:00
maccess.c
treewide: Add SPDX license identifier for missed files
2019-05-21 10:50:45 +02:00
madvise.c
mm/mmu_notifier: use correct mmu_notifier events for each invalidation
2019-05-14 09:47:49 -07:00
Makefile
mm: consolidate the get_user_pages* implementations
2019-07-12 11:05:45 -07:00
memblock.c
treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 152
2019-05-30 11:26:32 -07:00
memcontrol.c
mm: memcg/slab: reparent memcg kmem_caches on cgroup removal
2019-07-12 11:05:44 -07:00
memfd.c
Revert "mm: page cache: store only head pages in i_pages"
2019-07-05 19:55:18 -07:00
memory_hotplug.c
treewide: Add SPDX license identifier for missed files
2019-05-21 10:50:45 +02:00
memory-failure.c
Merge branch 'siginfo-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/ebiederm/user-namespace
2019-07-08 21:48:15 -07:00
memory.c
mm, swap: fix race between swapoff and some swap operations
2019-07-12 11:05:43 -07:00
mempolicy.c
mm/mempolicy.c: fix an incorrect rebind node in mpol_rebind_nodemask
2019-06-29 16:43:44 +08:00
mempool.c
docs/core-api/mm: fix return value descriptions in mm/
2019-03-05 21:07:20 -08:00
memtest.c
License cleanup: add SPDX GPL-2.0 license identifier to files with no license
2017-11-02 11:10:55 +01:00
migrate.c
Revert "mm: page cache: store only head pages in i_pages"
2019-07-05 19:55:18 -07:00
mincore.c
mm/mincore.c: fix race between swapoff and mincore
2019-07-12 11:05:43 -07:00
mlock.c
mm/mlock.c: change count_mm_mlocked_page_nr return type
2019-06-13 17:34:56 -10:00
mm_init.c
treewide: Add SPDX license identifier for missed files
2019-05-21 10:50:45 +02:00
mmap.c
treewide: Add SPDX license identifier for missed files
2019-05-21 10:50:45 +02:00
mmu_context.c
sched/headers: Prepare to move the task_lock()/unlock() APIs to <linux/sched/task.h>
2017-03-02 08:42:38 +01:00
mmu_gather.c
mm: mmu_gather: remove __tlb_reset_range() for force flush
2019-06-13 17:34:56 -10:00
mmu_notifier.c
treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 499
2019-06-19 17:09:53 +02:00
mmzone.c
License cleanup: add SPDX GPL-2.0 license identifier to files with no license
2017-11-02 11:10:55 +01:00
mprotect.c
mm/mprotect.c: fix compilation warning because of unused 'mm' variable
2019-05-14 09:47:51 -07:00
mremap.c
mm/mmu_notifier: contextual information for event triggering invalidation
2019-05-14 09:47:49 -07:00
msync.c
License cleanup: add SPDX GPL-2.0 license identifier to files with no license
2017-11-02 11:10:55 +01:00
nommu.c
mm: consolidate the get_user_pages* implementations
2019-07-12 11:05:45 -07:00
oom_kill.c
mm/oom_kill.c: fix uninitialized oc->constraint
2019-06-29 16:43:45 +08:00
page_alloc.c
mm, debug_pagealloc: use a page type instead of page_ext flag
2019-07-12 11:05:43 -07:00
page_counter.c
memcg: introduce memory.min
2018-06-07 17:34:36 -07:00
page_ext.c
mm, debug_pagealloc: use a page type instead of page_ext flag
2019-07-12 11:05:43 -07:00
page_idle.c
mm/page_idle.c: fix oops because end_pfn is larger than max_pfn
2019-06-29 16:43:45 +08:00
page_io.c
mm, swap: use rbtree for swap_extent
2019-07-12 11:05:43 -07:00
page_isolation.c
mm/page_isolation.c: change the prototype of undo_isolate_page_range()
2019-07-12 11:05:43 -07:00
page_owner.c
mm/page_owner: Simplify stack trace handling
2019-04-29 12:37:50 +02:00
page_poison.c
page_poison: play nicely with KASAN
2019-03-05 21:07:13 -08:00
page_vma_mapped.c
mm/rmap: map_pte() was not handling private ZONE_DEVICE page properly
2018-10-31 08:54:11 -07:00
page-writeback.c
mm: remove the account_page_dirtied export
2019-07-12 11:05:42 -07:00
pagewalk.c
mm: kernel-doc: add missing parameter descriptions
2018-04-05 21:36:27 -07:00
percpu-internal.h
percpu: convert chunk hints to be based on pcpu_block_md
2019-03-13 12:25:31 -07:00
percpu-km.c
treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 428
2019-06-05 17:37:16 +02:00
percpu-stats.c
treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 428
2019-06-05 17:37:16 +02:00
percpu-vm.c
treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 428
2019-06-05 17:37:16 +02:00
percpu.c
treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 428
2019-06-05 17:37:16 +02:00
pgtable-generic.c
x86/mm: Page size aware flush_tlb_mm_range()
2018-10-09 16:51:11 +02:00
process_vm_access.c
treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 152
2019-05-30 11:26:32 -07:00
quicklist.c
License cleanup: add SPDX GPL-2.0 license identifier to files with no license
2017-11-02 11:10:55 +01:00
readahead.c
treewide: Add SPDX license identifier for missed files
2019-05-21 10:50:45 +02:00
rmap.c
mm/rmap.c: use the pra.mapcount to do the check
2019-05-14 09:47:49 -07:00
rodata_test.c
treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 441
2019-06-05 17:37:17 +02:00
shmem.c
Revert "mm: page cache: store only head pages in i_pages"
2019-07-05 19:55:18 -07:00
shuffle.c
mm: maintain randomization of page free lists
2019-05-14 19:52:48 -07:00
shuffle.h
mm: maintain randomization of page free lists
2019-05-14 19:52:48 -07:00
slab_common.c
mm, memcg: add a memcg_slabinfo debugfs file
2019-07-12 11:05:44 -07:00
slab.c
mm: memcg/slab: unify SLAB and SLUB page accounting
2019-07-12 11:05:44 -07:00
slab.h
mm: memcg/slab: reparent memcg kmem_caches on cgroup removal
2019-07-12 11:05:44 -07:00
slob.c
mm/slab: refactor common ksize KASAN logic into slab_common.c
2019-07-12 11:05:42 -07:00
slub.c
mm: memcg/slab: unify SLAB and SLUB page accounting
2019-07-12 11:05:44 -07:00
sparse-vmemmap.c
mm: remove include/linux/bootmem.h
2018-10-31 08:54:16 -07:00
sparse.c
mm/sparse.c: clean up obsolete code comment
2019-05-14 09:47:48 -07:00
swap_cgroup.c
License cleanup: add SPDX GPL-2.0 license identifier to files with no license
2017-11-02 11:10:55 +01:00
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
mm/swap_state.c: simplify total_swapcache_pages() with get_swap_device()
2019-07-12 11:05:43 -07:00
swap.c
treewide: Add SPDX license identifier for missed files
2019-05-21 10:50:45 +02:00
swapfile.c
mm, swap: use rbtree for swap_extent
2019-07-12 11:05:43 -07:00
truncate.c
treewide: Add SPDX license identifier for missed files
2019-05-21 10:50:45 +02:00
usercopy.c
treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 500
2019-06-19 17:09:55 +02:00
userfaultfd.c
treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 499
2019-06-19 17:09:53 +02:00
util.c
mm: consolidate the get_user_pages* implementations
2019-07-12 11:05:45 -07:00
vmacache.c
mm: get rid of vmacache_flush_all() entirely
2018-09-13 15:18:04 -10:00
vmalloc.c
arm64 updates for 5.3:
2019-07-08 09:54:55 -07:00
vmpressure.c
treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 500
2019-06-19 17:09:55 +02:00
vmscan.c
mm: vmscan: scan anonymous pages on file refaults
2019-07-12 11:05:39 -07:00
vmstat.c
treewide: Add SPDX license identifier for missed files
2019-05-21 10:50:45 +02:00
workingset.c
mm: memcontrol: make cgroup stats and events query API explicitly local
2019-05-14 19:52:53 -07:00
z3fold.c
mm/z3fold.c: lock z3fold page before __SetPageMovable()
2019-07-12 11:05:40 -07:00
zbud.c
treewide: Add SPDX license identifier for more missed files
2019-05-21 10:50:45 +02:00
zpool.c
treewide: Add SPDX license identifier for more missed files
2019-05-21 10:50:45 +02:00
zsmalloc.c
mm/zsmalloc.c: fix fall-through annotation
2018-10-26 16:26:35 -07:00
zswap.c
treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 157
2019-05-30 11:26:37 -07:00