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Doug Berger 2aca945f09 mm/cma.c: fail if fixed declaration can't be honored 
[ Upstream commit c633324e311243586675e732249339685e5d6faa ]

The description of cma_declare_contiguous() indicates that if the
'fixed' argument is true the reserved contiguous area must be exactly at
the address of the 'base' argument.

However, the function currently allows the 'base', 'size', and 'limit'
arguments to be silently adjusted to meet alignment constraints.  This
commit enforces the documented behavior through explicit checks that
return an error if the region does not fit within a specified region.

Link: http://lkml.kernel.org/r/1561422051-16142-1-git-send-email-opendmb@gmail.com
Fixes: 5ea3b1b2f8ad ("cma: add placement specifier for "cma=" kernel parameter")
Signed-off-by: Doug Berger <opendmb@gmail.com>
Acked-by: Michal Nazarewicz <mina86@mina86.com>
Cc: Yue Hu <huyue2@yulong.com>
Cc: Mike Rapoport <rppt@linux.ibm.com>
Cc: Laura Abbott <labbott@redhat.com>
Cc: Peng Fan <peng.fan@nxp.com>
Cc: Thomas Gleixner <tglx@linutronix.de>
Cc: Marek Szyprowski <m.szyprowski@samsung.com>
Cc: Andrey Konovalov <andreyknvl@google.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Signed-off-by: Sasha Levin <sashal@kernel.org>
2019-08-06 19:05:23 +02:00
..
kasan
kasan: fix shadow_size calculation error in kasan_module_alloc
2018-08-24 13:09:12 +02:00
backing-dev.c
writeback: synchronize sync(2) against cgroup writeback membership switches
2019-03-05 17:58:01 +01:00
balloon_compaction.c
virtio_balloon: fix deadlock on OOM
2018-10-13 09:27:30 +02:00
bootmem.c
License cleanup: add SPDX GPL-2.0 license identifier to files with no license
2017-11-02 11:10:55 +01:00
cleancache.c
fs: switch ->s_uuid to uuid_t
2017-06-05 16:59:12 +02:00
cma_debug.c
mm/cma_debug.c: fix the break condition in cma_maxchunk_get()
2019-06-15 11:54:51 +02:00
cma.c
mm/cma.c: fail if fixed declaration can't be honored
2019-08-06 19:05:23 +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
License cleanup: add SPDX GPL-2.0 license identifier to files with no license
2017-11-02 11:10:55 +01:00
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: get rid of vmacache_flush_all() entirely
2018-09-19 22:43:48 +02:00
dmapool.c
lib/vsprintf.c: remove %Z support
2017-02-27 18:43:47 -08:00
early_ioremap.c
mm/early_ioremap: Fix boot hang with earlyprintk=efi,keep
2018-02-25 11:08:03 +01:00
fadvise.c
mm/fadvise.c: fix signed overflow UBSAN complaint
2018-09-15 09:45:28 +02:00
failslab.c
License cleanup: add SPDX GPL-2.0 license identifier to files with no license
2017-11-02 11:10:55 +01:00
filemap.c
mm: add filemap_fdatawait_range_keep_errors()
2019-07-31 07:28:47 +02:00
frame_vector.c
mm/frame_vector.c: release a semaphore in 'get_vaddr_frames()'
2018-03-03 10:24:21 +01:00
frontswap.c
mm, frontswap: convert frontswap_enabled to static key
2016-07-26 16:19:19 -07:00
gup.c
mm/gup.c: remove some BUG_ONs from get_gate_page()
2019-07-31 07:28:56 +02:00
highmem.c
License cleanup: add SPDX GPL-2.0 license identifier to files with no license
2017-11-02 11:10:55 +01:00
hmm.c
mm, hmm: mark hmm_devmem_{add, add_resource} EXPORT_SYMBOL_GPL
2019-01-13 10:01:02 +01:00
huge_memory.c
mm/huge_memory: fix lockdep complaint on 32-bit i_size_read()
2018-12-05 19:41:08 +01:00
hugetlb_cgroup.c
mm, hugetlb_cgroup: round limit_in_bytes down to hugepage size
2016-05-20 17:58:30 -07:00
hugetlb.c
hugetlbfs: on restore reserve error path retain subpool reservation
2019-06-15 11:54:51 +02:00
hwpoison-inject.c
mm: hwpoison: call shake_page() unconditionally
2017-05-03 15:52:12 -07:00
init-mm.c
License cleanup: add SPDX GPL-2.0 license identifier to files with no license
2017-11-02 11:10:55 +01:00
internal.h
mm, oom: do not rely on TIF_MEMDIE for memory reserves access
2017-09-06 17:27:30 -07:00
interval_tree.c
lib/interval_tree: fast overlap detection
2017-09-08 18:26:49 -07:00
Kconfig
mm/hmm: select mmu notifier when selecting HMM
2019-06-15 11:54:51 +02:00
Kconfig.debug
kmemcheck: rip it out
2018-02-22 15:42:24 +01:00
khugepaged.c
coredump: fix race condition between collapse_huge_page() and core dumping
2019-06-22 08:16:19 +02:00
kmemleak-test.c
mm: convert printk(KERN_<LEVEL> to pr_<level>
2016-03-17 15:09:34 -07:00
kmemleak.c
mm/kmemleak.c: fix check for softirq context
2019-07-31 07:28:55 +02:00
ksm.c
mm/ksm.c: ignore STABLE_FLAG of rmap_item->address in rmap_walk_ksm()
2018-07-03 11:25:03 +02:00
list_lru.c
mm/list_lru.c: fix memory leak in __memcg_init_list_lru_node
2019-06-19 08:20:54 +02:00
maccess.c
x86: remove more uaccess_32.h complexity
2016-05-22 17:21:27 -07:00
madvise.c
mm: madvise(MADV_DODUMP): allow hugetlbfs pages
2018-10-10 08:54:22 +02:00
Makefile
kmemcheck: rip it out
2018-02-22 15:42:24 +01:00
memblock.c
Revert "mm: page_alloc: skip over regions of invalid pfns where possible"
2018-03-28 18:24:39 +02:00
memcontrol.c
memcg: remove memcg_cgroup::id from IDR on mem_cgroup_css_alloc() failure
2018-09-05 09:26:32 +02:00
memory_hotplug.c
mm, memory_hotplug: test_pages_in_a_zone do not pass the end of zone
2019-03-13 14:03:18 -07:00
memory-failure.c
mm: hwpoison: fix thp split handing in soft_offline_in_use_page()
2019-03-23 14:35:24 +01:00
memory.c
mm/memory.c: fix modifying of page protection by insert_pfn()
2019-05-16 19:42:31 +02:00
mempolicy.c
mm/mempolicy.c: fix an incorrect rebind node in mpol_rebind_nodemask
2019-07-03 13:15:59 +02:00
mempool.c
License cleanup: add SPDX GPL-2.0 license identifier to files with no license
2017-11-02 11:10:55 +01:00
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
mm/migrate.c: add missing flush_dcache_page for non-mapped page migrate
2019-04-03 06:25:20 +02:00
mincore.c
mm/mincore.c: make mincore() more conservative
2019-05-21 18:50:16 +02:00
mlock.c
mm/mlock.c: change count_mm_mlocked_page_nr return type
2019-07-10 09:54:36 +02:00
mm_init.c
mm: convert printk(KERN_<LEVEL> to pr_<level>
2016-03-17 15:09:34 -07:00
mmap.c
coredump: fix race condition between mmget_not_zero()/get_task_mm() and core dumping
2019-04-27 09:35:37 +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_notifier.c
mm/mmu_notifier: use hlist_add_head_rcu()
2019-07-31 07:28:56 +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
x86/speculation/l1tf: Disallow non privileged high MMIO PROT_NONE mappings
2018-08-15 18:12:51 +02:00
mremap.c
mremap: properly flush TLB before releasing the page
2018-10-20 09:48:53 +02:00
msync.c
License cleanup: add SPDX GPL-2.0 license identifier to files with no license
2017-11-02 11:10:55 +01:00
nobootmem.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
Merge branch 'work.set_fs' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs
2017-09-14 18:13:32 -07:00
oom_kill.c
mm, oom: fix use-after-free in oom_kill_process
2019-02-06 17:31:36 +01:00
page_alloc.c
mem-hotplug: fix node spanned pages when we have a node with only ZONE_MOVABLE
2019-06-15 11:54:51 +02:00
page_counter.c
License cleanup: add SPDX GPL-2.0 license identifier to files with no license
2017-11-02 11:10:55 +01:00
page_ext.c
mm/page_ext.c: fix an imbalance with kmemleak
2019-04-05 22:31:27 +02:00
page_idle.c
mm/page_idle.c: fix oops because end_pfn is larger than max_pfn
2019-07-03 13:15:59 +02:00
page_io.c
License cleanup: add SPDX GPL-2.0 license identifier to files with no license
2017-11-02 11:10:55 +01:00
page_isolation.c
License cleanup: add SPDX GPL-2.0 license identifier to files with no license
2017-11-02 11:10:55 +01:00
page_owner.c
mm/page_owner: fix recursion bug after changing skip entries
2018-05-30 07:52:21 +02:00
page_poison.c
page_poison: play nicely with KASAN
2019-04-05 22:31:28 +02:00
page_vma_mapped.c
mm/rmap: map_pte() was not handling private ZONE_DEVICE page properly
2018-11-13 11:15:08 -08:00
page-writeback.c
mm/page-writeback.c: don't break integrity writeback on ->writepage() error
2019-01-26 09:37:06 +01:00
pagewalk.c
mm/pagewalk.c: report holes in hugetlb ranges
2017-11-24 08:37:04 +01:00
percpu-internal.h
License cleanup: add SPDX GPL-2.0 license identifier to files with no license
2017-11-02 11:10:55 +01:00
percpu-km.c
percpu: convert spin_lock_irq to spin_lock_irqsave.
2019-02-12 19:46:05 +01:00
percpu-stats.c
percpu: fix starting offset for chunk statistics traversal
2017-09-27 14:45:57 -07:00
percpu-vm.c
percpu: add __GFP_NORETRY semantics to the percpu balancing path
2018-04-08 14:26:29 +02:00
percpu.c
percpu: do not search past bitmap when allocating an area
2019-06-15 11:54:59 +02:00
pgtable-generic.c
License cleanup: add SPDX GPL-2.0 license identifier to files with no license
2017-11-02 11:10:55 +01:00
process_vm_access.c
sched/headers: Prepare for new header dependencies before moving code to <linux/sched/mm.h>
2017-03-02 08:42:28 +01:00
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
readahead: stricter check for bdi io_pages
2018-09-09 19:55:53 +02:00
rmap.c
mm: migration: fix migration of huge PMD shared pages
2018-10-13 09:27:22 +02:00
rodata_test.c
mm: fix RODATA_TEST failure "rodata_test: test data was not read only"
2017-10-03 17:54:24 -07:00
shmem.c
tmpfs: fix uninitialized return value in shmem_link
2019-03-23 14:35:17 +01:00
slab_common.c
mm: don't warn about large allocations for slab
2018-12-01 09:42:51 +01:00
slab.c
mm/slab.c: fix an infinite loop in leaks_show()
2019-06-15 11:54:51 +02:00
slab.h
kmemcheck: stop using GFP_NOTRACK and SLAB_NOTRACK
2018-02-22 15:42:23 +01:00
slob.c
License cleanup: add SPDX GPL-2.0 license identifier to files with no license
2017-11-02 11:10:55 +01:00
slub.c
slub: make ->cpu_partial unsigned int
2018-10-03 17:00:55 -07:00
sparse-vmemmap.c
License cleanup: add SPDX GPL-2.0 license identifier to files with no license
2017-11-02 11:10:55 +01:00
sparse.c
mm: sections are not offlined during memory hotremove
2018-05-16 10:10:27 +02:00
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
License cleanup: add SPDX GPL-2.0 license identifier to files with no license
2017-11-02 11:10:55 +01:00
swap_state.c
License cleanup: add SPDX GPL-2.0 license identifier to files with no license
2017-11-02 11:10:55 +01:00
swap.c
mm: avoid marking swap cached page as lazyfree
2017-10-03 17:54:24 -07:00
swapfile.c
mm/swap: use nr_node_ids for avail_lists in swap_info_struct
2019-01-26 09:37:06 +01:00
truncate.c
mm: cleancache: fix corruption on missed inode invalidation
2018-12-08 13:03:40 +01:00
usercopy.c
mm/usercopy: Drop extra is_vmalloc_or_module() check
2017-04-05 12:30:18 -07:00
userfaultfd.c
hugetlb: use same fault hash key for shared and private mappings
2019-05-31 06:47:12 -07:00
util.c
mm: page_mapped: don't assume compound page is huge or THP
2019-01-16 22:07:11 +01:00
vmacache.c
mm: get rid of vmacache_flush_all() entirely
2018-09-19 22:43:48 +02:00
vmalloc.c
mm/vmalloc.c: fix kernel BUG at mm/vmalloc.c:512!
2019-04-05 22:31:27 +02:00
vmpressure.c
mm, vmpressure: pass-through notification support
2017-07-10 16:32:31 -07:00
vmscan.c
mm: vmscan: scan anonymous pages on file refaults
2019-07-31 07:28:48 +02:00
vmstat.c
mm/vmstat.c: fix /proc/vmstat format for CONFIG_DEBUG_TLBFLUSH=y CONFIG_SMP=n
2019-04-27 09:35:41 +02:00
workingset.c
License cleanup: add SPDX GPL-2.0 license identifier to files with no license
2017-11-02 11:10:55 +01:00
z3fold.c
z3fold: fix possible reclaim races
2018-12-01 09:42:54 +01:00
zbud.c
…
zpool.c
…
zsmalloc.c
zsmalloc: calling zs_map_object() from irq is a bug
2017-12-14 09:53:10 +01:00
zswap.c
zswap: re-check zswap_is_full() after do zswap_shrink()
2018-09-05 09:26:30 +02:00