Fan Du 15675d9235 mm: Add 'mprotect' hook to struct vm_operations_struct ... Upstream commit id: 95bb7c42ac8a94ce3d0eb059ad64430390351ccb Background ========== 1. SGX enclave pages are populated with data by copying from normal memory via ioctl() (SGX_IOC_ENCLAVE_ADD_PAGES), which will be added later in this series. 2. It is desirable to be able to restrict those normal memory data sources. For instance, to ensure that the source data is executable before copying data to an executable enclave page. 3. Enclave page permissions are dynamic (just like normal permissions) and can be adjusted at runtime with mprotect(). This creates a problem because the original data source may have long since vanished at the time when enclave page permissions are established (mmap() or mprotect()). The solution (elsewhere in this series) is to force enclave creators to declare their paging permission *intent* up front to the ioctl(). This intent can be immediately compared to the source data’s mapping and rejected if necessary. The “intent” is also stashed off for later comparison with enclave PTEs. This ensures that any future mmap()/mprotect() operations performed by the enclave creator or done on behalf of the enclave can be compared with the earlier declared permissions. Problem ======= There is an existing mmap() hook which allows SGX to perform this permission comparison at mmap() time. However, there is no corresponding ->mprotect() hook. Solution ======== Add a vm_ops->mprotect() hook so that mprotect() operations which are inconsistent with any page's stashed intent can be rejected by the driver. Signed-off-by: Sean Christopherson <sean.j.christopherson@intel.com> Co-developed-by: Jarkko Sakkinen <jarkko@kernel.org> Signed-off-by: Jarkko Sakkinen <jarkko@kernel.org> Signed-off-by: Borislav Petkov <bp@suse.de> Acked-by: Jethro Beekman <jethro@fortanix.com> Acked-by: Dave Hansen <dave.hansen@intel.com> Acked-by: Mel Gorman <mgorman@techsingularity.net> Acked-by: Hillf Danton <hdanton@sina.com> Cc: linux-mm@kvack.org Link: https://lkml.kernel.org/r/20201112220135.165028-11-jarkko@kernel.org		2021-07-12 08:56:46 +00:00
..
kasan	kasan: fix incorrect arguments passing in kasan_add_zero_shadow	2021-04-12 12:51:39 +08:00
Kconfig	mm/zsmalloc.c: drop ZSMALLOC_PGTABLE_MAPPING	2021-03-16 16:42:15 +08:00
Kconfig.debug	Init Repo base on linux 5.4.32 long term, and add base tlinux kernel interfaces.	2021-03-16 11:01:34 +08:00
Makefile	Init Repo base on linux 5.4.32 long term, and add base tlinux kernel interfaces.	2021-03-16 11:01:34 +08:00
backing-dev.c	bdi: add a ->dev_name field to struct backing_dev_info	2021-03-16 16:27:44 +08:00
balloon_compaction.c	Init Repo base on linux 5.4.32 long term, and add base tlinux kernel interfaces.	2021-03-16 11:01:34 +08:00
cleancache.c	Init Repo base on linux 5.4.32 long term, and add base tlinux kernel interfaces.	2021-03-16 11:01:34 +08:00
cma.c	cma: don't quit at first error when activating reserved areas	2021-03-16 16:34:57 +08:00
cma.h	Init Repo base on linux 5.4.32 long term, and add base tlinux kernel interfaces.	2021-03-16 11:01:34 +08:00
cma_debug.c	Init Repo base on linux 5.4.32 long term, and add base tlinux kernel interfaces.	2021-03-16 11:01:34 +08:00
compaction.c	mm/compaction: fix misbehaviors of fast_find_migrateblock()	2021-04-12 12:52:31 +08:00
debug.c	Init Repo base on linux 5.4.32 long term, and add base tlinux kernel interfaces.	2021-03-16 11:01:34 +08:00
debug_page_ref.c	Init Repo base on linux 5.4.32 long term, and add base tlinux kernel interfaces.	2021-03-16 11:01:34 +08:00
dmapool.c	Init Repo base on linux 5.4.32 long term, and add base tlinux kernel interfaces.	2021-03-16 11:01:34 +08:00
early_ioremap.c	Init Repo base on linux 5.4.32 long term, and add base tlinux kernel interfaces.	2021-03-16 11:01:34 +08:00
fadvise.c	Init Repo base on linux 5.4.32 long term, and add base tlinux kernel interfaces.	2021-03-16 11:01:34 +08:00
failslab.c	Init Repo base on linux 5.4.32 long term, and add base tlinux kernel interfaces.	2021-03-16 11:01:34 +08:00
filemap.c	mm/error_inject: Fix allow_error_inject function signatures.	2021-03-16 16:38:34 +08:00
frame_vector.c	Init Repo base on linux 5.4.32 long term, and add base tlinux kernel interfaces.	2021-03-16 11:01:34 +08:00
frontswap.c	Init Repo base on linux 5.4.32 long term, and add base tlinux kernel interfaces.	2021-03-16 11:01:34 +08:00
gup.c	mm/gup: fix gup_fast with dynamic page table folding	2021-03-16 16:37:40 +08:00
gup_benchmark.c	Init Repo base on linux 5.4.32 long term, and add base tlinux kernel interfaces.	2021-03-16 11:01:34 +08:00
highmem.c	Init Repo base on linux 5.4.32 long term, and add base tlinux kernel interfaces.	2021-03-16 11:01:34 +08:00
hmm.c	Init Repo base on linux 5.4.32 long term, and add base tlinux kernel interfaces.	2021-03-16 11:01:34 +08:00
huge_memory.c	mm: thp: fix MADV_REMOVE deadlock on shmem THP	2021-04-12 12:51:57 +08:00
hugetlb.c	hugetlbfs: hugetlb_fault_mutex_hash() cleanup	2021-04-12 12:53:21 +08:00
hugetlb_cgroup.c	Init Repo base on linux 5.4.32 long term, and add base tlinux kernel interfaces.	2021-03-16 11:01:34 +08:00
hwpoison-inject.c	Init Repo base on linux 5.4.32 long term, and add base tlinux kernel interfaces.	2021-03-16 11:01:34 +08:00
init-mm.c	Init Repo base on linux 5.4.32 long term, and add base tlinux kernel interfaces.	2021-03-16 11:01:34 +08:00
internal.h	Init Repo base on linux 5.4.32 long term, and add base tlinux kernel interfaces.	2021-03-16 11:01:34 +08:00
interval_tree.c	Init Repo base on linux 5.4.32 long term, and add base tlinux kernel interfaces.	2021-03-16 11:01:34 +08:00
khugepaged.c	mm: khugepaged: recalculate min_free_kbytes after memory hotplug as expected by khugepaged	2021-03-16 16:38:06 +08:00
kmemleak-test.c	Init Repo base on linux 5.4.32 long term, and add base tlinux kernel interfaces.	2021-03-16 11:01:34 +08:00
kmemleak.c	mm/kmemleak.c: use address-of operator on section symbols	2021-03-16 16:37:10 +08:00
ksm.c	mm/ksm: fix NULL pointer dereference when KSM zero page is enabled	2021-03-16 16:26:56 +08:00
list_lru.c	mm: list_lru: set shrinker map bit when child nr_items is not zero	2021-03-16 16:42:05 +08:00
maccess.c	Init Repo base on linux 5.4.32 long term, and add base tlinux kernel interfaces.	2021-03-16 11:01:34 +08:00
madvise.c	mm: validate pmd after splitting	2021-03-16 16:37:37 +08:00
memblock.c	memblock: do not start bottom-up allocations with kernel_end	2021-04-12 12:51:54 +08:00
memcontrol.c	mm: memcg/slab: fix root memcg vmstats	2021-03-16 16:41:32 +08:00
memfd.c	Init Repo base on linux 5.4.32 long term, and add base tlinux kernel interfaces.	2021-03-16 11:01:34 +08:00
memory-failure.c	mm/memory-failure: unnecessary amount of unmapping	2021-05-20 16:08:01 +08:00
memory.c	mm: fix race by making init_zero_pfn() early_initcall	2021-05-20 16:06:49 +08:00
memory_hotplug.c	mm: don't rely on system state to detect hot-plug operations	2021-03-16 16:37:50 +08:00
mempolicy.c	mm: mempolicy: fix potential pte_unmap_unlock pte error	2021-03-16 16:40:21 +08:00
mempool.c	Init Repo base on linux 5.4.32 long term, and add base tlinux kernel interfaces.	2021-03-16 11:01:34 +08:00
memremap.c	Init Repo base on linux 5.4.32 long term, and add base tlinux kernel interfaces.	2021-03-16 11:01:34 +08:00
memtest.c	Init Repo base on linux 5.4.32 long term, and add base tlinux kernel interfaces.	2021-03-16 11:01:34 +08:00
migrate.c	Init Repo base on linux 5.4.32 long term, and add base tlinux kernel interfaces.	2021-03-16 11:01:34 +08:00
mincore.c	Init Repo base on linux 5.4.32 long term, and add base tlinux kernel interfaces.	2021-03-16 11:01:34 +08:00
mlock.c	Init Repo base on linux 5.4.32 long term, and add base tlinux kernel interfaces.	2021-03-16 11:01:34 +08:00
mm_init.c	Init Repo base on linux 5.4.32 long term, and add base tlinux kernel interfaces.	2021-03-16 11:01:34 +08:00
mmap.c	mm/mmap.c: initialize align_offset explicitly for vm_unmapped_area	2021-03-16 16:37:12 +08:00
mmu_context.c	mm: fix kthread_use_mm() vs TLB invalidate	2021-03-16 16:34:57 +08:00
mmu_gather.c	Init Repo base on linux 5.4.32 long term, and add base tlinux kernel interfaces.	2021-03-16 11:01:34 +08:00
mmu_notifier.c	Init Repo base on linux 5.4.32 long term, and add base tlinux kernel interfaces.	2021-03-16 11:01:34 +08:00
mmzone.c	Init Repo base on linux 5.4.32 long term, and add base tlinux kernel interfaces.	2021-03-16 11:01:34 +08:00
mprotect.c	mm: Add 'mprotect' hook to struct vm_operations_struct	2021-07-12 08:56:46 +00:00
mremap.c	mm: Fix mremap not considering huge pmd devmap	2021-03-16 16:28:43 +08:00
msync.c	Init Repo base on linux 5.4.32 long term, and add base tlinux kernel interfaces.	2021-03-16 11:01:34 +08:00
nommu.c	mm: Implement no-MMU variant of vmalloc_user_node_flags	2021-03-16 16:43:58 +08:00
oom_kill.c	mm, oom_adj: don't loop through tasks in __set_oom_adj when not necessary	2021-03-16 16:38:47 +08:00
page-writeback.c	Init Repo base on linux 5.4.32 long term, and add base tlinux kernel interfaces.	2021-03-16 11:01:34 +08:00
page_alloc.c	mm: don't wake kswapd prematurely when watermark boosting is disabled	2021-03-16 16:43:15 +08:00
page_counter.c	mm/page_counter.c: fix protection usage propagation	2021-03-16 16:34:07 +08:00
page_ext.c	Init Repo base on linux 5.4.32 long term, and add base tlinux kernel interfaces.	2021-03-16 11:01:34 +08:00
page_idle.c	Init Repo base on linux 5.4.32 long term, and add base tlinux kernel interfaces.	2021-03-16 11:01:34 +08:00
page_io.c	swap: fix swapfile read/write offset	2021-04-12 12:52:50 +08:00
page_isolation.c	mm/memory_hotplug: drain per-cpu pages again during memory offline	2021-03-16 16:36:22 +08:00
page_owner.c	mm/page_owner: change split_page_owner to take a count	2021-03-16 16:38:58 +08:00
page_poison.c	Init Repo base on linux 5.4.32 long term, and add base tlinux kernel interfaces.	2021-03-16 11:01:34 +08:00
page_vma_mapped.c	Init Repo base on linux 5.4.32 long term, and add base tlinux kernel interfaces.	2021-03-16 11:01:34 +08:00
pagewalk.c	mm: pagewalk: fix termination condition in walk_pte_range()	2021-03-16 16:36:50 +08:00
percpu-internal.h	Init Repo base on linux 5.4.32 long term, and add base tlinux kernel interfaces.	2021-03-16 11:01:34 +08:00
percpu-km.c	Init Repo base on linux 5.4.32 long term, and add base tlinux kernel interfaces.	2021-03-16 11:01:34 +08:00
percpu-stats.c	Init Repo base on linux 5.4.32 long term, and add base tlinux kernel interfaces.	2021-03-16 11:01:34 +08:00
percpu-vm.c	Init Repo base on linux 5.4.32 long term, and add base tlinux kernel interfaces.	2021-03-16 11:01:34 +08:00
percpu.c	percpu: fix first chunk size calculation for populated bitmap	2021-03-16 16:36:21 +08:00
pgtable-generic.c	Init Repo base on linux 5.4.32 long term, and add base tlinux kernel interfaces.	2021-03-16 11:01:34 +08:00
process_vm_access.c	Init Repo base on linux 5.4.32 long term, and add base tlinux kernel interfaces.	2021-03-16 11:01:34 +08:00
readahead.c	Init Repo base on linux 5.4.32 long term, and add base tlinux kernel interfaces.	2021-03-16 11:01:34 +08:00
rmap.c	Init Repo base on linux 5.4.32 long term, and add base tlinux kernel interfaces.	2021-03-16 11:01:34 +08:00
rodata_test.c	Init Repo base on linux 5.4.32 long term, and add base tlinux kernel interfaces.	2021-03-16 11:01:34 +08:00
shmem.c	shmem: fix possible deadlocks on shmlock_user_lock	2021-03-16 16:27:44 +08:00
shuffle.c	mm/shuffle: don't move pages between zones and don't read garbage memmaps	2021-03-16 16:34:57 +08:00
shuffle.h	Init Repo base on linux 5.4.32 long term, and add base tlinux kernel interfaces.	2021-03-16 11:01:34 +08:00
slab.c	Init Repo base on linux 5.4.32 long term, and add base tlinux kernel interfaces.	2021-03-16 11:01:34 +08:00
slab.h	Init Repo base on linux 5.4.32 long term, and add base tlinux kernel interfaces.	2021-03-16 11:01:34 +08:00
slab_common.c	mm: memcg/slab: fix memory leak at non-root kmem_cache destroy	2021-03-16 16:32:38 +08:00
slob.c	Init Repo base on linux 5.4.32 long term, and add base tlinux kernel interfaces.	2021-03-16 11:01:34 +08:00
slub.c	Revert "mm, slub: consider rest of partial list if acquire_slab() fails"	2021-04-12 12:52:58 +08:00
sparse-vmemmap.c	Init Repo base on linux 5.4.32 long term, and add base tlinux kernel interfaces.	2021-03-16 11:01:34 +08:00
sparse.c	mm/sparse: add the missing sparse_buffer_fini() in error branch	2021-05-20 16:08:01 +08:00
swap.c	Init Repo base on linux 5.4.32 long term, and add base tlinux kernel interfaces.	2021-03-16 11:01:34 +08:00
swap_cgroup.c	Init Repo base on linux 5.4.32 long term, and add base tlinux kernel interfaces.	2021-03-16 11:01:34 +08:00
swap_slots.c	Init Repo base on linux 5.4.32 long term, and add base tlinux kernel interfaces.	2021-03-16 11:01:34 +08:00
swap_state.c	mm/swap_state: fix a data race in swapin_nr_pages	2021-03-16 16:37:24 +08:00
swapfile.c	swap: fix swapfile read/write offset	2021-04-12 12:52:50 +08:00
truncate.c	Init Repo base on linux 5.4.32 long term, and add base tlinux kernel interfaces.	2021-03-16 11:01:34 +08:00
usercopy.c	Init Repo base on linux 5.4.32 long term, and add base tlinux kernel interfaces.	2021-03-16 11:01:34 +08:00
userfaultfd.c	hugetlbfs: hugetlb_fault_mutex_hash() cleanup	2021-04-12 12:53:21 +08:00
util.c	mm: add kvfree_sensitive() for freeing sensitive data objects	2021-03-16 16:28:58 +08:00
vmacache.c	Init Repo base on linux 5.4.32 long term, and add base tlinux kernel interfaces.	2021-03-16 11:01:34 +08:00
vmalloc.c	bpf: Add mmap() support for BPF_MAP_TYPE_ARRAY	2021-03-16 16:43:58 +08:00
vmpressure.c	Init Repo base on linux 5.4.32 long term, and add base tlinux kernel interfaces.	2021-03-16 11:01:34 +08:00
vmscan.c	mm/vmscan: fix infinite loop in drop_slab_node	2021-05-20 16:08:02 +08:00
vmstat.c	Init Repo base on linux 5.4.32 long term, and add base tlinux kernel interfaces.	2021-03-16 11:01:34 +08:00
workingset.c	Init Repo base on linux 5.4.32 long term, and add base tlinux kernel interfaces.	2021-03-16 11:01:34 +08:00
z3fold.c	Init Repo base on linux 5.4.32 long term, and add base tlinux kernel interfaces.	2021-03-16 11:01:34 +08:00
zbud.c	Init Repo base on linux 5.4.32 long term, and add base tlinux kernel interfaces.	2021-03-16 11:01:34 +08:00
zpool.c	Init Repo base on linux 5.4.32 long term, and add base tlinux kernel interfaces.	2021-03-16 11:01:34 +08:00
zsmalloc.c	zsmalloc: account the number of compacted pages correctly	2021-04-12 12:52:50 +08:00
zswap.c	Init Repo base on linux 5.4.32 long term, and add base tlinux kernel interfaces.	2021-03-16 11:01:34 +08:00