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 pXs4Dho8 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 X-Bogosity: Ham, tests=bogofilter, spamicity=0.000000, version=1.2.4 Sender: owner-linux-mm@kvack.org Precedence: bulk X-Loop: owner-majordomo@kvack.org List-ID: List-Subscribe: List-Unsubscribe: On Sun, Sep 08, 2024 at 09:15:45PM GMT, kernel test robot wrote: > > > Hello, > > kernel test robot noticed "ltp.memfd_create03.fail" on: Hi, Thanks for the report. This looks _probably_ to be a problem in the test rather than the kernel. An munmap() is failing (as expected by the test) to unmap invalid sizes from a hugetlb allocation. It expects EINVAL: if (errno == EINVAL) { tst_res(TINFO, "munmap(%p, %dkB) failed as expected", mem, i/1024); But is instead receiving ENOMEM. This is because we rearrange how we perform unmaps. In both cases we are failing when we go ahead and attempt a split via __split_vma(), which invokes vm_ops->may_split() which is equal to hugetlb_vm_op_split() which returns EINVAL. The difference is that original implementation, in do_vmi_align_munmap() we do: error = __split_vma(vmi, vma, start, 1); if (error) goto start_split_failed; Which forwards the EINVAL. Now in vms_gather_munmap_vmas(), we do: int error = -ENOMEM; ... if (__split_vma(vms->vmi, vms->vma, vms->start, 1)) goto start_split_failed; So we filter the error code to ENOMEM. Liam - could you confirm if this needs an actual change in the kernel? If not the test should be changed. Test fix is obviously as simple as: if (errno == EINVAL || error == ENOMEM) { ... Cheers, Lorenzo > > commit: 6898c9039bc8e3027ae0fcd0f05fc2b82ccc8be0 ("mm/vma: extract the gathering of vmas from do_vmi_align_munmap()") > https://git.kernel.org/cgit/linux/kernel/git/next/linux-next.git master > > [test failed on linux-next/master 9aaeb87ce1e966169a57f53a02ba05b30880ffb8] > > in testcase: ltp > version: ltp-x86_64-14c1f76-1_20240831 > with following parameters: > > disk: 1HDD > fs: btrfs > test: syscalls-03/memfd_create03 > > > > compiler: gcc-12 > test machine: 4 threads 1 sockets Intel(R) Core(TM) i3-3220 CPU @ 3.30GHz (Ivy Bridge) with 8G memory > > (please refer to attached dmesg/kmsg for entire log/backtrace) > > > > > If you fix the issue in a separate patch/commit (i.e. not just a new version of > the same patch/commit), kindly add following tags > | Reported-by: kernel test robot > | Closes: https://lore.kernel.org/oe-lkp/202409081536.d283a0fb-oliver.sang@intel.com > > > > Running tests....... > <<>> > tag=memfd_create03 stime=1725647495 > cmdline="memfd_create03" > contacts="" > analysis=exit > <<>> > tst_hugepage.c:84: TINFO: 1 hugepage(s) reserved > tst_test.c:1809: TINFO: LTP version: 20240524-209-g9a6f3896f > tst_test.c:1813: TINFO: Tested kernel: 6.11.0-rc6-00249-g6898c9039bc8 #1 SMP PREEMPT_DYNAMIC Thu Sep 5 20:53:00 CST 2024 x86_64 > tst_test.c:1652: TINFO: Timeout per run is 0h 02m 30s > memfd_create03.c:171: TINFO: --TESTING WRITE CALL IN HUGEPAGES-- > memfd_create03.c:176: TINFO: memfd_create() succeeded > memfd_create03.c:70: TPASS: write(4, "LTP", 3) failed as expected > > memfd_create03.c:171: TINFO: --TESTING PAGE SIZE OF CREATED FILE-- > memfd_create03.c:176: TINFO: memfd_create() succeeded > memfd_create03.c:43: TINFO: mmap((nil), 2097152, 2, 2, 4, 0) succeeded > memfd_create03.c:96: TFAIL: munmap(0x7f9b26c00000, 512kB) failed unexpectedly: ENOMEM (12) > memfd_create03.c:171: TINFO: --TESTING HUGEPAGE ALLOCATION LIMIT-- > memfd_create03.c:176: TINFO: memfd_create() succeeded > memfd_create03.c:39: TBROK: mmap((nil),0,PROT_WRITE(2),2,4,0) failed: EINVAL (22) > > Summary: > passed 1 > failed 1 > broken 1 > skipped 0 > warnings 0 > incrementing stop > <<>> > initiation_status="ok" > duration=2 termination_type=exited termination_id=3 corefile=no > cutime=0 cstime=187 > <<>> > INFO: ltp-pan reported some tests FAIL > LTP Version: 20240524-209-g9a6f3896f > > ############################################################### > > Done executing testcases. > LTP Version: 20240524-209-g9a6f3896f > ############################################################### > > ------------------------------------------- > INFO: runltp script is deprecated, try kirk > https://github.com/linux-test-project/kirk > ------------------------------------------- > > > > The kernel config and materials to reproduce are available at: > https://download.01.org/0day-ci/archive/20240908/202409081536.d283a0fb-oliver.sang@intel.com > > > > -- > 0-DAY CI Kernel Test Service > https://github.com/intel/lkp-tests/wiki >