Greeting, FYI, we noticed the following commit (built with gcc-11): commit: c5fac7744cf417920552cb4eec2600fb53048b0b ("[RFC PATCH] selftests/vm: enable running select groups of tests") url: https://github.com/intel-lab-lkp/linux/commits/Joel-Savitz/selftests-vm-enable-running-select-groups-of-tests/20220610-082232 base: https://git.kernel.org/cgit/linux/kernel/git/shuah/linux-kselftest.git next patch link: https://lore.kernel.org/lkml/20220610002046.3243874-1-jsavitz@redhat.com in testcase: kernel-selftests version: kernel-selftests-x86_64-cebf67a3-1_20220612 with following parameters: sc_nr_hugepages: 2 group: vm ucode: 0xec test-description: The kernel contains a set of "self tests" under the tools/testing/selftests/ directory. These are intended to be small unit tests to exercise individual code paths in the kernel. test-url: https://www.kernel.org/doc/Documentation/kselftest.txt on test machine: 12 threads 1 sockets Intel(R) Core(TM) i7-8700 CPU @ 3.20GHz with 16G memory caused below changes (please refer to attached dmesg/kmsg for entire log/backtrace): If you fix the issue, kindly add following tag Reported-by: kernel test robot please be noted, besides kernel-selftests.vm.run_vmtests.sh../hugepage_mmap.fail, we actually observed other tests failed on this commit but pass on parent. here we list all tests run on both parent and the commit, even they have same results. FYI ========================================================================================= compiler/group/kconfig/rootfs/sc_nr_hugepages/tbox_group/testcase/ucode: gcc-11/vm/x86_64-rhel-8.3-kselftests/debian-11.1-x86_64-20220510.cgz/2/lkp-cfl-d1/kernel-selftests/0xec v5.19-rc1 c5fac7744cf417920552cb4eec2 ---------------- --------------------------- fail:runs %reproduction fail:runs | | | 18:18 -67% 6:6 kernel-selftests.vm.madv_populate.fail 18:18 -67% 6:6 kernel-selftests.vm.run_vmtests.sh../compaction_test.pass 18:18 -67% 6:6 kernel-selftests.vm.run_vmtests.sh../gup_test_a.pass 18:18 -67% 6:6 kernel-selftests.vm.run_vmtests.sh../gup_test_ct_F_0x1_0_19_0x1000.pass 18:18 -67% 6:6 kernel-selftests.vm.run_vmtests.sh../gup_test_u.pass :18 33% 6:6 kernel-selftests.vm.run_vmtests.sh../hugepage_mmap.fail 18:18 -100% :6 kernel-selftests.vm.run_vmtests.sh../hugepage_mmap.pass :18 33% 6:6 kernel-selftests.vm.run_vmtests.sh../hugepage_mremap_./huge/huge_mremap.fail 18:18 -100% :6 kernel-selftests.vm.run_vmtests.sh../hugepage_mremap_./huge/huge_mremap.pass :18 33% 6:6 kernel-selftests.vm.run_vmtests.sh../hugepage_shm.fail 18:18 -100% :6 kernel-selftests.vm.run_vmtests.sh../hugepage_shm.pass 18:18 -67% 6:6 kernel-selftests.vm.run_vmtests.sh../hugepage_vmemmap.pass :18 33% 6:6 kernel-selftests.vm.run_vmtests.sh../hugetlb_madvise_./huge/madvise_test.fail 18:18 -100% :6 kernel-selftests.vm.run_vmtests.sh../hugetlb_madvise_./huge/madvise_test.pass 18:18 -67% 6:6 kernel-selftests.vm.run_vmtests.sh../map_fixed_noreplace.pass :18 33% 6:6 kernel-selftests.vm.run_vmtests.sh../map_hugetlb.fail 18:18 -100% :6 kernel-selftests.vm.run_vmtests.sh../map_hugetlb.pass 18:18 -67% 6:6 kernel-selftests.vm.run_vmtests.sh../map_populate.pass 18:18 -67% 6:6 kernel-selftests.vm.run_vmtests.sh../mlock2_tests.pass 18:18 -67% 6:6 kernel-selftests.vm.run_vmtests.sh../mlock_random_test.pass 18:18 -67% 6:6 kernel-selftests.vm.run_vmtests.sh../mrelease_test.fail 18:18 -67% 6:6 kernel-selftests.vm.run_vmtests.sh../mremap_test.pass 18:18 -67% 6:6 kernel-selftests.vm.run_vmtests.sh../thuge_gen.pass 18:18 -67% 6:6 kernel-selftests.vm.run_vmtests.sh../userfaultfd_anon_20_16.pass :18 33% 6:6 kernel-selftests.vm.run_vmtests.sh../userfaultfd_hugetlb_0_32.fail 18:18 -100% :6 kernel-selftests.vm.run_vmtests.sh../userfaultfd_hugetlb_128_32.pass 18:18 -67% 6:6 kernel-selftests.vm.run_vmtests.sh../userfaultfd_shmem_20_16.pass 18:18 -67% 6:6 kernel-selftests.vm.run_vmtests.sh../va_128TBswitch.fail 18:18 -67% 6:6 kernel-selftests.vm.run_vmtests.sh../virtual_address_range.pass 18:18 -67% 6:6 kernel-selftests.vm.run_vmtests.sh.fail 18:18 -67% 6:6 kernel-selftests.vm.run_vmtests.sh.sudo_u_nobody_./on_fault_limit.pass 18:18 -67% 6:6 kernel-selftests.vm.soft-dirty.pass 18:18 -67% 6:6 kernel-selftests.vm.split_huge_page_test.pass # selftests: vm: run_vmtests.sh # Selected test items: default # ----------------------- # running ./hugepage-mmap # ----------------------- # mmap: Cannot allocate memory # [FAIL] # ---------------------- # running ./hugepage-shm # ---------------------- # shmget: Cannot allocate memory # [FAIL] # --------------------- # running ./map_hugetlb # --------------------- # mmap: Cannot allocate memory # Default size hugepages # Mapping 256 Mbytes # [FAIL] # -------------------------------------------- # running ./hugepage-mremap ./huge/huge_mremap # -------------------------------------------- # mmap1: Cannot allocate memory # Map haddr: Returned address is 0xffffffffffffffff # [FAIL] # -------------------------- # running ./hugepage-vmemmap # -------------------------- # Returned address is 0x7f4d3c600000 whose pfn is 1bc800 # [PASS] # --------------------------------------------- # running ./hugetlb-madvise ./huge/madvise-test # --------------------------------------------- # Not enough free huge pages to test, exiting! # [FAIL] # NOTE: These hugetlb tests provide minimal coverage. Use # https://github.com/libhugetlbfs/libhugetlbfs.git for # hugetlb regression testing. ... # ---------------------------------- # running ./userfaultfd hugetlb 0 32 # ---------------------------------- # ERROR: invalid MiB (errno=0, line=1662) # # Usage: ./userfaultfd [hugetlbfs_file] # # Supported : anon, hugetlb, hugetlb_shared, shmem # # Examples: # # # Run anonymous memory test on 100MiB region with 99999 bounces: # ./userfaultfd anon 100 99999 # # # Run share memory test on 1GiB region with 99 bounces: # ./userfaultfd shmem 1000 99 # # # Run hugetlb memory test on 256MiB region with 50 bounces: # ./userfaultfd hugetlb 256 50 # # # Run the same hugetlb test but using shared file: # ./userfaultfd hugetlb_shared 256 50 /dev/hugepages/hugefile # # # 10MiB-~6GiB 999 bounces anonymous test, continue forever unless an error triggers # while ./userfaultfd anon $[RANDOM % 6000 + 10] 999; do true; done # # [FAIL] ... To reproduce: git clone https://github.com/intel/lkp-tests.git cd lkp-tests sudo bin/lkp install job.yaml # job file is attached in this email bin/lkp split-job --compatible job.yaml # generate the yaml file for lkp run sudo bin/lkp run generated-yaml-file # if come across any failure that blocks the test, # please remove ~/.lkp and /lkp dir to run from a clean state. -- 0-DAY CI Kernel Test Service https://01.org/lkp