1#!/bin/bash 2# SPDX-License-Identifier: GPL-2.0 3# Please run as root 4 5# IMPORTANT: If you add a new test CATEGORY please add a simple wrapper 6# script so kunit knows to run it, and add it to the list below. 7# If you do not YOUR TESTS WILL NOT RUN IN THE CI. 8 9# Kselftest framework requirement - SKIP code is 4. 10ksft_skip=4 11 12count_total=0 13count_pass=0 14count_fail=0 15count_skip=0 16exitcode=0 17 18usage() { 19 cat <<EOF 20usage: ${BASH_SOURCE[0]:-$0} [ options ] 21 22 -a: run all tests, including extra ones (other than destructive ones) 23 -t: specify specific categories to tests to run 24 -h: display this message 25 -n: disable TAP output 26 -d: run destructive tests 27 28The default behavior is to run required tests only. If -a is specified, 29will run all tests. 30 31Alternatively, specific groups tests can be run by passing a string 32to the -t argument containing one or more of the following categories 33separated by spaces: 34- mmap 35 tests for mmap(2) 36- gup_test 37 tests for gup 38- userfaultfd 39 tests for userfaultfd(2) 40- compaction 41 a test for the patch "Allow compaction of unevictable pages" 42- mlock 43 tests for mlock(2) 44- mremap 45 tests for mremap(2) 46- hugevm 47 tests for very large virtual address space 48- vmalloc 49 vmalloc smoke tests 50- hmm 51 hmm smoke tests 52- madv_guard 53 test madvise(2) MADV_GUARD_INSTALL and MADV_GUARD_REMOVE options 54- madv_populate 55 test memadvise(2) MADV_POPULATE_{READ,WRITE} options 56- memfd_secret 57 test memfd_secret(2) 58- process_mrelease 59 test process_mrelease(2) 60- ksm 61 ksm tests that do not require >=2 NUMA nodes 62- ksm_numa 63 ksm tests that require >=2 NUMA nodes 64- pkey 65 memory protection key tests 66- soft_dirty 67 test soft dirty page bit semantics 68- pagemap 69 test pagemap_scan IOCTL 70- pfnmap 71 tests for VM_PFNMAP handling 72- process_madv 73 test for process_madv 74- cow 75 test copy-on-write semantics 76- thp 77 test transparent huge pages 78- hugetlb 79 test hugetlbfs huge pages 80- migration 81 invoke move_pages(2) to exercise the migration entry code 82 paths in the kernel 83- mkdirty 84 test handling of code that might set PTE/PMD dirty in 85 read-only VMAs 86- mdwe 87 test prctl(PR_SET_MDWE, ...) 88- page_frag 89 test handling of page fragment allocation and freeing 90- vma_merge 91 test VMA merge cases behave as expected 92- rmap 93 test rmap behaves as expected 94- memory-failure 95 test memory-failure behaves as expected 96 97example: ./run_vmtests.sh -t "hmm mmap ksm" 98EOF 99 exit 0 100} 101 102RUN_ALL=false 103RUN_DESTRUCTIVE=false 104TAP_PREFIX="# " 105 106while getopts "aht:nd" OPT; do 107 case ${OPT} in 108 "a") RUN_ALL=true ;; 109 "h") usage ;; 110 "t") VM_SELFTEST_ITEMS=${OPTARG} ;; 111 "n") TAP_PREFIX= ;; 112 "d") RUN_DESTRUCTIVE=true ;; 113 esac 114done 115shift $((OPTIND -1)) 116 117# default behavior: run all tests 118VM_SELFTEST_ITEMS=${VM_SELFTEST_ITEMS:-default} 119 120test_selected() { 121 if [ "$VM_SELFTEST_ITEMS" == "default" ]; then 122 # If no VM_SELFTEST_ITEMS are specified, run all tests 123 return 0 124 fi 125 # If test selected argument is one of the test items 126 if [[ " ${VM_SELFTEST_ITEMS[*]} " =~ " ${1} " ]]; then 127 return 0 128 else 129 return 1 130 fi 131} 132 133run_gup_matrix() { 134 # -t: thp=on, -T: thp=off, -H: hugetlb=on 135 local hugetlb_mb=$(( needmem_KB / 1024 )) 136 137 for huge in -t -T "-H -m $hugetlb_mb"; do 138 # -u: gup-fast, -U: gup-basic, -a: pin-fast, -b: pin-basic, -L: pin-longterm 139 for test_cmd in -u -U -a -b -L; do 140 # -w: write=1, -W: write=0 141 for write in -w -W; do 142 # -S: shared 143 for share in -S " "; do 144 # -n: How many pages to fetch together? 512 is special 145 # because it's default thp size (or 2M on x86), 123 to 146 # just test partial gup when hit a huge in whatever form 147 for num in "-n 1" "-n 512" "-n 123" "-n -1"; do 148 CATEGORY="gup_test" run_test ./gup_test \ 149 $huge $test_cmd $write $share $num 150 done 151 done 152 done 153 done 154 done 155} 156 157# get huge pagesize and freepages from /proc/meminfo 158while read -r name size unit; do 159 if [ "$name" = "HugePages_Free:" ]; then 160 freepgs="$size" 161 fi 162 if [ "$name" = "Hugepagesize:" ]; then 163 hpgsize_KB="$size" 164 fi 165done < /proc/meminfo 166 167# Simple hugetlbfs tests have a hardcoded minimum requirement of 168# huge pages totaling 256MB (262144KB) in size. The userfaultfd 169# hugetlb test requires a minimum of 2 * nr_cpus huge pages. Take 170# both of these requirements into account and attempt to increase 171# number of huge pages available. 172nr_cpus=$(nproc) 173uffd_min_KB=$((hpgsize_KB * nr_cpus * 2)) 174hugetlb_min_KB=$((256 * 1024)) 175if [[ $uffd_min_KB -gt $hugetlb_min_KB ]]; then 176 needmem_KB=$uffd_min_KB 177else 178 needmem_KB=$hugetlb_min_KB 179fi 180 181# set proper nr_hugepages 182if [ -n "$freepgs" ] && [ -n "$hpgsize_KB" ]; then 183 orig_nr_hugepgs=$(cat /proc/sys/vm/nr_hugepages) 184 needpgs=$((needmem_KB / hpgsize_KB)) 185 tries=2 186 while [ "$tries" -gt 0 ] && [ "$freepgs" -lt "$needpgs" ]; do 187 lackpgs=$((needpgs - freepgs)) 188 echo 3 > /proc/sys/vm/drop_caches 189 if ! echo $((lackpgs + orig_nr_hugepgs)) > /proc/sys/vm/nr_hugepages; then 190 echo "Please run this test as root" 191 exit $ksft_skip 192 fi 193 while read -r name size unit; do 194 if [ "$name" = "HugePages_Free:" ]; then 195 freepgs=$size 196 fi 197 done < /proc/meminfo 198 tries=$((tries - 1)) 199 done 200 nr_hugepgs=$(cat /proc/sys/vm/nr_hugepages) 201 if [ "$freepgs" -lt "$needpgs" ]; then 202 printf "Not enough huge pages available (%d < %d)\n" \ 203 "$freepgs" "$needpgs" 204 fi 205 HAVE_HUGEPAGES=1 206else 207 echo "no hugetlbfs support in kernel?" 208 HAVE_HUGEPAGES=0 209fi 210 211# filter 64bit architectures 212ARCH64STR="arm64 mips64 parisc64 ppc64 ppc64le riscv64 s390x sparc64 x86_64" 213if [ -z "$ARCH" ]; then 214 ARCH=$(uname -m 2>/dev/null | sed -e 's/aarch64.*/arm64/') 215fi 216VADDR64=0 217echo "$ARCH64STR" | grep "$ARCH" &>/dev/null && VADDR64=1 218 219tap_prefix() { 220 sed -e "s/^/${TAP_PREFIX}/" 221} 222 223tap_output() { 224 if [[ ! -z "$TAP_PREFIX" ]]; then 225 read str 226 echo $str 227 fi 228} 229 230pretty_name() { 231 echo "$*" | sed -e 's/^\(bash \)\?\.\///' 232} 233 234# Usage: run_test [test binary] [arbitrary test arguments...] 235run_test() { 236 if test_selected ${CATEGORY}; then 237 local skip=0 238 239 # On memory constrainted systems some tests can fail to allocate hugepages. 240 # perform some cleanup before the test for a higher success rate. 241 if [ ${CATEGORY} == "thp" -o ${CATEGORY} == "hugetlb" ]; then 242 if [ "${HAVE_HUGEPAGES}" = "1" ]; then 243 echo 3 > /proc/sys/vm/drop_caches 244 sleep 2 245 echo 1 > /proc/sys/vm/compact_memory 246 sleep 2 247 else 248 echo "hugepages not supported" | tap_prefix 249 skip=1 250 fi 251 fi 252 253 local test=$(pretty_name "$*") 254 local title="running $*" 255 local sep=$(echo -n "$title" | tr "[:graph:][:space:]" -) 256 printf "%s\n%s\n%s\n" "$sep" "$title" "$sep" | tap_prefix 257 258 if [ "${skip}" != "1" ]; then 259 ("$@" 2>&1) | tap_prefix 260 local ret=${PIPESTATUS[0]} 261 else 262 local ret=$ksft_skip 263 fi 264 count_total=$(( count_total + 1 )) 265 if [ $ret -eq 0 ]; then 266 count_pass=$(( count_pass + 1 )) 267 echo "[PASS]" | tap_prefix 268 echo "ok ${count_total} ${test}" | tap_output 269 elif [ $ret -eq $ksft_skip ]; then 270 count_skip=$(( count_skip + 1 )) 271 echo "[SKIP]" | tap_prefix 272 echo "ok ${count_total} ${test} # SKIP" | tap_output 273 exitcode=$ksft_skip 274 else 275 count_fail=$(( count_fail + 1 )) 276 echo "[FAIL]" | tap_prefix 277 echo "not ok ${count_total} ${test} # exit=$ret" | tap_output 278 exitcode=1 279 fi 280 fi # test_selected 281} 282 283echo "TAP version 13" | tap_output 284 285CATEGORY="hugetlb" run_test ./hugepage-mmap 286 287shmmax=$(cat /proc/sys/kernel/shmmax) 288shmall=$(cat /proc/sys/kernel/shmall) 289echo 268435456 > /proc/sys/kernel/shmmax 290echo 4194304 > /proc/sys/kernel/shmall 291CATEGORY="hugetlb" run_test ./hugepage-shm 292echo "$shmmax" > /proc/sys/kernel/shmmax 293echo "$shmall" > /proc/sys/kernel/shmall 294 295CATEGORY="hugetlb" run_test ./map_hugetlb 296CATEGORY="hugetlb" run_test ./hugepage-mremap 297CATEGORY="hugetlb" run_test ./hugepage-vmemmap 298CATEGORY="hugetlb" run_test ./hugetlb-madvise 299CATEGORY="hugetlb" run_test ./hugetlb_dio 300 301if [ "${HAVE_HUGEPAGES}" = "1" ]; then 302 nr_hugepages_tmp=$(cat /proc/sys/vm/nr_hugepages) 303 # For this test, we need one and just one huge page 304 echo 1 > /proc/sys/vm/nr_hugepages 305 CATEGORY="hugetlb" run_test ./hugetlb_fault_after_madv 306 CATEGORY="hugetlb" run_test ./hugetlb_madv_vs_map 307 # Restore the previous number of huge pages, since further tests rely on it 308 echo "$nr_hugepages_tmp" > /proc/sys/vm/nr_hugepages 309fi 310 311if test_selected "hugetlb"; then 312 echo "NOTE: These hugetlb tests provide minimal coverage. Use" | tap_prefix 313 echo " https://github.com/libhugetlbfs/libhugetlbfs.git for" | tap_prefix 314 echo " hugetlb regression testing." | tap_prefix 315fi 316 317CATEGORY="mmap" run_test ./map_fixed_noreplace 318 319if $RUN_ALL; then 320 run_gup_matrix 321else 322 # get_user_pages_fast() benchmark 323 CATEGORY="gup_test" run_test ./gup_test -u -n 1 324 CATEGORY="gup_test" run_test ./gup_test -u -n -1 325 # pin_user_pages_fast() benchmark 326 CATEGORY="gup_test" run_test ./gup_test -a -n 1 327 CATEGORY="gup_test" run_test ./gup_test -a -n -1 328fi 329# Dump pages 0, 19, and 4096, using pin_user_pages: 330CATEGORY="gup_test" run_test ./gup_test -ct -F 0x1 0 19 0x1000 331CATEGORY="gup_test" run_test ./gup_longterm 332 333CATEGORY="userfaultfd" run_test ./uffd-unit-tests 334uffd_stress_bin=./uffd-stress 335CATEGORY="userfaultfd" run_test ${uffd_stress_bin} anon 20 16 336# Hugetlb tests require source and destination huge pages. Pass in almost half 337# the size of the free pages we have, which is used for *each*. An adjustment 338# of (nr_parallel - 1) is done (see nr_parallel in uffd-stress.c) to have some 339# extra hugepages - this is done to prevent the test from failing by racily 340# reserving more hugepages than strictly required. 341# uffd-stress expects a region expressed in MiB, so we adjust 342# half_ufd_size_MB accordingly. 343adjustment=$(( (31 < (nr_cpus - 1)) ? 31 : (nr_cpus - 1) )) 344half_ufd_size_MB=$((((freepgs - adjustment) * hpgsize_KB) / 1024 / 2)) 345CATEGORY="userfaultfd" run_test ${uffd_stress_bin} hugetlb "$half_ufd_size_MB" 32 346CATEGORY="userfaultfd" run_test ${uffd_stress_bin} hugetlb-private "$half_ufd_size_MB" 32 347CATEGORY="userfaultfd" run_test ${uffd_stress_bin} shmem 20 16 348CATEGORY="userfaultfd" run_test ${uffd_stress_bin} shmem-private 20 16 349# uffd-wp-mremap requires at least one page of each size. 350have_all_size_hugepgs=true 351declare -A nr_size_hugepgs 352for f in /sys/kernel/mm/hugepages/**/nr_hugepages; do 353 old=$(cat $f) 354 nr_size_hugepgs["$f"]="$old" 355 if [ "$old" == 0 ]; then 356 echo 1 > "$f" 357 fi 358 if [ $(cat "$f") == 0 ]; then 359 have_all_size_hugepgs=false 360 break 361 fi 362done 363if $have_all_size_hugepgs; then 364 CATEGORY="userfaultfd" run_test ./uffd-wp-mremap 365else 366 echo "# SKIP ./uffd-wp-mremap" 367fi 368 369#cleanup 370for f in "${!nr_size_hugepgs[@]}"; do 371 echo "${nr_size_hugepgs["$f"]}" > "$f" 372done 373echo "$nr_hugepgs" > /proc/sys/vm/nr_hugepages 374 375CATEGORY="compaction" run_test ./compaction_test 376 377if command -v sudo &> /dev/null && sudo -u nobody ls ./on-fault-limit >/dev/null; 378then 379 CATEGORY="mlock" run_test sudo -u nobody ./on-fault-limit 380else 381 echo "# SKIP ./on-fault-limit" 382fi 383 384CATEGORY="mmap" run_test ./map_populate 385CATEGORY="mmap" run_test ./droppable 386 387CATEGORY="mlock" run_test ./mlock-random-test 388 389CATEGORY="mlock" run_test ./mlock2-tests 390 391CATEGORY="process_mrelease" run_test ./mrelease_test 392 393CATEGORY="mremap" run_test ./mremap_test 394 395CATEGORY="hugetlb" run_test ./thuge-gen 396CATEGORY="hugetlb" run_test ./charge_reserved_hugetlb.sh -cgroup-v2 397CATEGORY="hugetlb" run_test ./hugetlb_reparenting_test.sh -cgroup-v2 398if $RUN_DESTRUCTIVE; then 399nr_hugepages_tmp=$(cat /proc/sys/vm/nr_hugepages) 400enable_soft_offline=$(cat /proc/sys/vm/enable_soft_offline) 401echo 8 > /proc/sys/vm/nr_hugepages 402CATEGORY="hugetlb" run_test ./hugetlb-soft-offline 403echo "$nr_hugepages_tmp" > /proc/sys/vm/nr_hugepages 404echo "$enable_soft_offline" > /proc/sys/vm/enable_soft_offline 405CATEGORY="hugetlb" run_test ./hugetlb-read-hwpoison 406fi 407 408if [ $VADDR64 -ne 0 ]; then 409 # va high address boundary switch test 410 CATEGORY="hugevm" run_test bash ./va_high_addr_switch.sh 411fi # VADDR64 412 413# vmalloc stability smoke test 414CATEGORY="vmalloc" run_test bash ./test_vmalloc.sh smoke 415 416CATEGORY="mremap" run_test ./mremap_dontunmap 417 418CATEGORY="hmm" run_test bash ./test_hmm.sh smoke 419 420# MADV_GUARD_INSTALL and MADV_GUARD_REMOVE tests 421CATEGORY="madv_guard" run_test ./guard-regions 422 423# MADV_POPULATE_READ and MADV_POPULATE_WRITE tests 424CATEGORY="madv_populate" run_test ./madv_populate 425 426# PROCESS_MADV test 427CATEGORY="process_madv" run_test ./process_madv 428 429CATEGORY="vma_merge" run_test ./merge 430 431if [ -x ./memfd_secret ] 432then 433if [ -f /proc/sys/kernel/yama/ptrace_scope ]; then 434 (echo 0 > /proc/sys/kernel/yama/ptrace_scope 2>&1) | tap_prefix 435fi 436CATEGORY="memfd_secret" run_test ./memfd_secret 437fi 438 439# KSM KSM_MERGE_TIME_HUGE_PAGES test with size of 100 440if [ "${HAVE_HUGEPAGES}" = "1" ]; then 441 CATEGORY="ksm" run_test ./ksm_tests -H -s 100 442fi 443# KSM KSM_MERGE_TIME test with size of 100 444CATEGORY="ksm" run_test ./ksm_tests -P -s 100 445# KSM MADV_MERGEABLE test with 10 identical pages 446CATEGORY="ksm" run_test ./ksm_tests -M -p 10 447# KSM unmerge test 448CATEGORY="ksm" run_test ./ksm_tests -U 449# KSM test with 10 zero pages and use_zero_pages = 0 450CATEGORY="ksm" run_test ./ksm_tests -Z -p 10 -z 0 451# KSM test with 10 zero pages and use_zero_pages = 1 452CATEGORY="ksm" run_test ./ksm_tests -Z -p 10 -z 1 453# KSM test with 2 NUMA nodes and merge_across_nodes = 1 454CATEGORY="ksm_numa" run_test ./ksm_tests -N -m 1 455# KSM test with 2 NUMA nodes and merge_across_nodes = 0 456CATEGORY="ksm_numa" run_test ./ksm_tests -N -m 0 457 458CATEGORY="ksm" run_test ./ksm_functional_tests 459 460# protection_keys tests 461nr_hugepgs=$(cat /proc/sys/vm/nr_hugepages) 462if [ -x ./protection_keys_32 ] 463then 464 CATEGORY="pkey" run_test ./protection_keys_32 465fi 466 467if [ -x ./protection_keys_64 ] 468then 469 CATEGORY="pkey" run_test ./protection_keys_64 470fi 471echo "$nr_hugepgs" > /proc/sys/vm/nr_hugepages 472 473if [ -x ./soft-dirty ] 474then 475 CATEGORY="soft_dirty" run_test ./soft-dirty 476fi 477 478CATEGORY="pagemap" run_test ./pagemap_ioctl 479 480CATEGORY="pfnmap" run_test ./pfnmap 481 482# COW tests 483CATEGORY="cow" run_test ./cow 484 485CATEGORY="thp" run_test ./khugepaged 486 487CATEGORY="thp" run_test ./khugepaged -s 2 488 489CATEGORY="thp" run_test ./khugepaged all:shmem 490 491CATEGORY="thp" run_test ./khugepaged -s 4 all:shmem 492 493CATEGORY="thp" run_test ./transhuge-stress -d 20 494 495# Try to create XFS if not provided 496if [ -z "${SPLIT_HUGE_PAGE_TEST_XFS_PATH}" ]; then 497 if [ "${HAVE_HUGEPAGES}" = "1" ]; then 498 if test_selected "thp"; then 499 if grep xfs /proc/filesystems &>/dev/null; then 500 XFS_IMG=$(mktemp /tmp/xfs_img_XXXXXX) 501 SPLIT_HUGE_PAGE_TEST_XFS_PATH=$(mktemp -d /tmp/xfs_dir_XXXXXX) 502 truncate -s 314572800 ${XFS_IMG} 503 mkfs.xfs -q ${XFS_IMG} 504 mount -o loop ${XFS_IMG} ${SPLIT_HUGE_PAGE_TEST_XFS_PATH} 505 MOUNTED_XFS=1 506 fi 507 fi 508 fi 509fi 510 511CATEGORY="thp" run_test ./split_huge_page_test ${SPLIT_HUGE_PAGE_TEST_XFS_PATH} 512 513if [ -n "${MOUNTED_XFS}" ]; then 514 umount ${SPLIT_HUGE_PAGE_TEST_XFS_PATH} 515 rmdir ${SPLIT_HUGE_PAGE_TEST_XFS_PATH} 516 rm -f ${XFS_IMG} 517fi 518 519CATEGORY="thp" run_test ./folio_split_race_test 520 521CATEGORY="migration" run_test ./migration 522 523CATEGORY="mkdirty" run_test ./mkdirty 524 525CATEGORY="mdwe" run_test ./mdwe_test 526 527CATEGORY="page_frag" run_test ./test_page_frag.sh smoke 528 529CATEGORY="page_frag" run_test ./test_page_frag.sh aligned 530 531CATEGORY="page_frag" run_test ./test_page_frag.sh nonaligned 532 533CATEGORY="rmap" run_test ./rmap 534 535# Try to load hwpoison_inject if not present. 536HWPOISON_DIR=/sys/kernel/debug/hwpoison/ 537if [ ! -d "$HWPOISON_DIR" ]; then 538 if ! modprobe -q -R hwpoison_inject; then 539 echo "Module hwpoison_inject not found, skipping..." 540 else 541 modprobe hwpoison_inject > /dev/null 2>&1 542 LOADED_MOD=1 543 fi 544fi 545 546if [ -d "$HWPOISON_DIR" ]; then 547 CATEGORY="memory-failure" run_test ./memory-failure 548fi 549 550if [ -n "${LOADED_MOD}" ]; then 551 modprobe -r hwpoison_inject > /dev/null 2>&1 552fi 553 554if [ "${HAVE_HUGEPAGES}" = 1 ]; then 555 echo "$orig_nr_hugepgs" > /proc/sys/vm/nr_hugepages 556fi 557 558echo "SUMMARY: PASS=${count_pass} SKIP=${count_skip} FAIL=${count_fail}" | tap_prefix 559echo "1..${count_total}" | tap_output 560 561exit $exitcode 562