Peter Collingbourne 0db282ba2c selftest: use mmap instead of posix_memalign to allocate memory ...

This test passes pointers obtained from anon_allocate_area to the
userfaultfd and mremap APIs.  This causes a problem if the system
allocator returns tagged pointers because with the tagged address ABI
the kernel rejects tagged addresses passed to these APIs, which would
end up causing the test to fail.  To make this test compatible with such
system allocators, stop using the system allocator to allocate memory in
anon_allocate_area, and instead just use mmap.

Link: https://lkml.kernel.org/r/20210714195437.118982-3-pcc@google.com
Link: https://linux-review.googlesource.com/id/Icac91064fcd923f77a83e8e133f8631c5b8fc241
Fixes: c47174fc36 ("userfaultfd: selftest")
Co-developed-by: Lokesh Gidra <lokeshgidra@google.com>
Signed-off-by: Lokesh Gidra <lokeshgidra@google.com>
Signed-off-by: Peter Collingbourne <pcc@google.com>
Reviewed-by: Catalin Marinas <catalin.marinas@arm.com>
Cc: Vincenzo Frascino <vincenzo.frascino@arm.com>
Cc: Dave Martin <Dave.Martin@arm.com>
Cc: Will Deacon <will@kernel.org>
Cc: Andrea Arcangeli <aarcange@redhat.com>
Cc: Alistair Delva <adelva@google.com>
Cc: William McVicker <willmcvicker@google.com>
Cc: Evgenii Stepanov <eugenis@google.com>
Cc: Mitch Phillips <mitchp@google.com>
Cc: Andrey Konovalov <andreyknvl@gmail.com>
Cc: <stable@vger.kernel.org>	[5.4]
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>

2021-07-23 17:43:28 -07:00

..

.gitignore

secretmem: test: add basic selftest for memfd_secret(2)

2021-07-08 11:48:21 -07:00

charge_reserved_hugetlb.sh

hugetlb_cgroup: add hugetlb_cgroup reservation tests

2020-04-02 09:35:32 -07:00

check_config.sh

selftests/vm: hmm-tests: remove the libhugetlbfs dependency

2020-12-15 12:13:38 -08:00

compaction_test.c

selftests/vm: 8x compaction_test speedup

2020-10-13 18:38:34 -07:00

config

mm/gup_benchmark: rename to mm/gup_test

2020-12-15 12:13:38 -08:00

gup_test.c

mm/gup_benchmark: support threading

2021-06-29 10:53:48 -07:00

hmm-tests.c

mm: selftests for exclusive device memory

2021-07-01 11:06:03 -07:00

hugepage-mmap.c

…

hugepage-shm.c

…

hugetlb_reparenting_test.sh

hugetlb_cgroup: add hugetlb_cgroup reservation tests

2020-04-02 09:35:32 -07:00

khugepaged.c

khugepaged: selftests: remove debug_cow

2021-06-30 20:47:26 -07:00

madv_populate.c

selftests/vm: add test for MADV_POPULATE_(READ|WRITE)

2021-06-30 20:47:31 -07:00

Makefile

secretmem: test: add basic selftest for memfd_secret(2)

2021-07-08 11:48:21 -07:00

map_fixed_noreplace.c

tools/testing/selftests/vm/map_fixed_noreplace.c: add test for MAP_FIXED_NOREPLACE

2018-10-26 16:38:15 -07:00

map_hugetlb.c

selftests/vm: fix display of page size in map_hugetlb

2020-09-19 13:13:39 -07:00

map_populate.c

…

memfd_secret.c

secretmem: test: add basic selftest for memfd_secret(2)

2021-07-08 11:48:21 -07:00

mlock2-tests.c

selftests: vm: drop dependencies on page flags from mlock2 tests

2020-04-02 09:35:31 -07:00

mlock2.h

…

mlock-random-test.c

…

mremap_dontunmap.c

selftests: add a MREMAP_DONTUNMAP selftest for shmem

2021-04-30 11:20:39 -07:00

mremap_test.c

selftest/mremap_test: avoid crash with static build

2021-07-08 11:48:22 -07:00

on-fault-limit.c

…

pkey-helpers.h

selftests/vm/pkeys: introduce a sub-page allocator

2020-06-04 19:06:27 -07:00

pkey-powerpc.h

selftests: vm: pkeys: use the correct page size on powerpc

2020-06-04 19:06:27 -07:00

pkey-x86.h

selftests/vm/pkeys: exercise x86 XSAVE init state

2021-07-01 11:06:06 -07:00

protection_keys.c

selftests/vm/pkeys: exercise x86 XSAVE init state

2021-07-01 11:06:06 -07:00

run_vmtests.sh

secretmem: test: add basic selftest for memfd_secret(2)

2021-07-08 11:48:21 -07:00

split_huge_page_test.c

mm: huge_memory: debugfs for file-backed THP split

2021-05-05 11:27:21 -07:00

test_hmm.sh

mm/hmm/test: add selftests for HMM

2020-05-19 16:48:31 -03:00

test_vmalloc.sh

vm/test_vmalloc.sh: adapt for updated driver interface

2021-04-30 11:20:40 -07:00

thuge-gen.c

…

transhuge-stress.c

…

userfaultfd.c

selftest: use mmap instead of posix_memalign to allocate memory

2021-07-23 17:43:28 -07:00

va_128TBswitch.c

treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 485

2019-06-19 17:09:52 +02:00

virtual_address_range.c

treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 191

2019-05-30 11:29:21 -07:00

write_hugetlb_memory.sh

hugetlb_cgroup: add hugetlb_cgroup reservation tests

2020-04-02 09:35:32 -07:00

write_to_hugetlbfs.c

selftests/vm/write_to_hugetlbfs.c: fix unused variable warning

2020-05-23 10:26:31 -07:00