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Hello, kernel test robot noticed "ltp.ksm01.fail" on: commit: 5e924ff54d088828794d9f1a4d5bf17808f7270e ("mm/ksm: add "smart" page scanning mode") https://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git master [test failed on linus/master 3ca112b71f35dd5d99fc4571a56b5fc6f0c15814] [test failed on linux-next/master 8728c14129df7a6e29188a2e737b4774fb200953] in testcase: ltp version: ltp-x86_64-14c1f76-1_20230715 with following parameters: disk: 1HDD test: mm-00/ksm01 compiler: gcc-12 test machine: 8 threads 1 sockets Intel(R) Core(TM) i7-7700 CPU @ 3.60GHz (Kaby Lake) with 32G 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/202311161132.13d8ce5a-oliver.sang@intel.com Running tests....... <<>> tag=ksm01 stime=1699563923 cmdline="ksm01" contacts="" analysis=exit <<>> tst_kconfig.c:87: TINFO: Parsing kernel config '/proc/config.gz' tst_test.c:1558: TINFO: Timeout per run is 0h 00m 30s mem.c:422: TINFO: wait for all children to stop. mem.c:388: TINFO: child 0 stops. mem.c:388: TINFO: child 1 stops. mem.c:388: TINFO: child 2 stops. mem.c:495: TINFO: KSM merging... mem.c:434: TINFO: resume all children. mem.c:422: TINFO: wait for all children to stop. mem.c:344: TINFO: child 1 continues... mem.c:347: TINFO: child 1 allocates 128 MB filled with 'a' mem.c:344: TINFO: child 2 continues... mem.c:347: TINFO: child 2 allocates 128 MB filled with 'a' mem.c:344: TINFO: child 0 continues... mem.c:347: TINFO: child 0 allocates 128 MB filled with 'c' mem.c:400: TINFO: child 1 stops. mem.c:400: TINFO: child 0 stops. mem.c:400: TINFO: child 2 stops. ksm_helper.c:36: TINFO: ksm daemon takes 2s to run two full scans mem.c:264: TINFO: check! mem.c:255: TPASS: run is 1. mem.c:255: TPASS: pages_shared is 2. .... mem.c:255: TPASS: pages_shared is 1. mem.c:255: TPASS: pages_sharing is 98302. mem.c:252: TFAIL: pages_volatile is not 0 but 1. <----- mem.c:252: TFAIL: pages_unshared is not 1 but 0. <----- mem.c:255: TPASS: sleep_millisecs is 0. mem.c:255: TPASS: pages_to_scan is 98304. .... mem.c:415: TINFO: child 1 finished. mem.c:415: TINFO: child 2 finished. mem.c:415: TINFO: child 0 finished. Summary: passed 40 failed 2 broken 0 skipped 0 warnings 0 incrementing stop <<>> initiation_status="ok" duration=9 termination_type=exited termination_id=1 corefile=no cutime=342 cstime=293 <<>> INFO: ltp-pan reported some tests FAIL LTP Version: 20230516-75-g2e582e743 ############################################################### Done executing testcases. LTP Version: 20230516-75-g2e582e743 ############################################################### The kernel config and materials to reproduce are available at: https://download.01.org/0day-ci/archive/20231116/202311161132.13d8ce5a-oliver.sang@intel.com -- 0-DAY CI Kernel Test Service https://github.com/intel/lkp-tests/wiki