* [linus:master] [proc] 599bbba5a3: kernel-selftests.mm.ksft_mkdirty.sh.mkdirty.fail
@ 2026-04-29 8:26 kernel test robot
0 siblings, 0 replies; only message in thread
From: kernel test robot @ 2026-04-29 8:26 UTC (permalink / raw)
To: Linus Torvalds, Mark Brown
Cc: oe-lkp, lkp, linux-kernel, Vova Tokarev, linux-security-module,
oliver.sang
Hello,
by this commit, we noticed the expected config diff:
==================== PARENT FIRST_BAD KCONFIGS fdcbb1bc06508eb7ad961b3876b16382ae678ef8 ====================
--- /pkg/linux/x86_64-rhel-9.4-kselftests/gcc-14/fdcbb1bc06508eb7ad961b3876b16382ae678ef8/.config 2026-04-26 22:54:11.801204874 +0200
+++ /pkg/linux/x86_64-rhel-9.4-kselftests/gcc-14/599bbba5a36f6de57ab14c373c25881e2b5273f5/.config 2026-04-26 22:01:12.692502621 +0200
@@ -8959,8 +8959,8 @@ CONFIG_ENCRYPTED_KEYS=y
CONFIG_KEY_DH_OPERATIONS=y
CONFIG_KEY_NOTIFICATIONS=y
# CONFIG_SECURITY_DMESG_RESTRICT is not set
-CONFIG_PROC_MEM_ALWAYS_FORCE=y
-# CONFIG_PROC_MEM_FORCE_PTRACE is not set
+# CONFIG_PROC_MEM_ALWAYS_FORCE is not set
+CONFIG_PROC_MEM_FORCE_PTRACE=y
# CONFIG_PROC_MEM_NO_FORCE is not set
CONFIG_SECURITY=y
CONFIG_HAS_SECURITY_AUDIT=y
then we saw below two cases failed upon this commit:
=========================================================================================
tbox_group/testcase/rootfs/kconfig/compiler/group/sc_nr_hugepages:
igk-rpl-d03/kernel-selftests/debian-13-x86_64-20250902.cgz/x86_64-rhel-9.4-kselftests/gcc-14/mm/2
fdcbb1bc06508eb7 599bbba5a36f6de57ab14c373c2
---------------- ---------------------------
fail:runs %reproduction fail:runs
| | |
:9 67% 6:6 kernel-selftests.mm.ksft_ksm.sh.fail
:9 67% 6:6 kernel-selftests.mm.ksft_mkdirty.sh.fail
we also noticed there is a fix commit in linux-next/master now, but we still
saw same failures in our tests if directly test upon it.
below full report FYI.
kernel test robot noticed "kernel-selftests.mm.ksft_mkdirty.sh.mkdirty.fail" on:
commit: 599bbba5a36f6de57ab14c373c25881e2b5273f5 ("proc: make PROC_MEM_FORCE_PTRACE the Kconfig default")
https://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git master
[test failed on linus/master 254f49634ee16a731174d2ae34bc50bd5f45e731]
[test failed on linux-next/master 7080e32d3f09d8688c4a87d81bdcc71f7f606b16]
[test failed on fix commit a3907a3169d09ebaeef9631ab6a4534314545ef7]
in testcase: kernel-selftests
version: kernel-selftests-x86_64-9f2693489ef8-1_20260201
with following parameters:
group: mm
sc_nr_hugepages: 2
config: x86_64-rhel-9.4-kselftests
compiler: gcc-14
test machine: 16 threads Intel(R) Core(TM) i7-13620H (Raptor 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 <oliver.sang@intel.com>
| Closes: https://lore.kernel.org/oe-lkp/202604290921.ac2bf5ff-lkp@intel.com
below is from commit 599bbba5a3:
# timeout set to 900
# selftests: mm: ksft_ksm.sh
# TAP version 13
# # -----------------------------
# # running ./ksm_tests -H -s 100
# # -----------------------------
# # Number of normal pages: 0
# # Number of huge pages: 50
# # Total size: 100 MiB
# # Total time: 0.196202091 s
# # Average speed: 509.679 MiB/s
# # [PASS]
# ok 1 ksm_tests -H -s 100
# # -----------------------------
# # running ./ksm_tests -P -s 100
# # -----------------------------
# # Total size: 100 MiB
# # Total time: 0.201963596 s
# # Average speed: 495.139 MiB/s
# # [PASS]
# ok 2 ksm_tests -P -s 100
# # ----------------------------
# # running ./ksm_tests -M -p 10
# # ----------------------------
# # OK
# # [PASS]
# ok 3 ksm_tests -M -p 10
# # ----------------------
# # running ./ksm_tests -U
# # ----------------------
# # OK
# # [PASS]
# ok 4 ksm_tests -U
# # ---------------------------------
# # running ./ksm_tests -Z -p 10 -z 0
# # ---------------------------------
# # OK
# # [PASS]
# ok 5 ksm_tests -Z -p 10 -z 0
# # ---------------------------------
# # running ./ksm_tests -Z -p 10 -z 1
# # ---------------------------------
# # OK
# # [PASS]
# ok 6 ksm_tests -Z -p 10 -z 1
# # ------------------------------
# # running ./ksm_functional_tests
# # ------------------------------
# # TAP version 13
# # 1..10
# # # [RUN] test_unmerge
# # ok 1 Pages were unmerged
# # # [RUN] test_unmerge_zero_pages
# # ok 2 KSM zero pages were unmerged
# # # [RUN] test_unmerge_discarded
# # ok 3 Pages were unmerged
# # # [RUN] test_unmerge_uffd_wp
# # ok 4 Pages were unmerged
# # # [RUN] test_prot_none
# # not ok 5 ptrace write failed
# # # [RUN] test_prctl
# # ok 6 Setting/clearing PR_SET_MEMORY_MERGE works
# # # [RUN] test_prctl_fork
# # ok 7 PR_SET_MEMORY_MERGE value is inherited
# # # [RUN] test_prctl_fork_exec
# # ok 8 PR_SET_MEMORY_MERGE value is inherited
# # # [RUN] test_prctl_unmerge
# # ok 9 Pages were unmerged
# # # [RUN] test_fork_ksm_merging_page_count
# # ok 10 ksm_merging_pages is not inherited after fork
# # Bail out! 1 out of 10 tests failed
# # # Totals: pass:9 fail:1 xfail:0 xpass:0 skip:0 error:0
# # [FAIL]
# not ok 7 ksm_functional_tests # exit=1
# hwpoison_inject
# # SUMMARY: PASS=6 SKIP=0 FAIL=1
# 1..7
not ok 7 selftests: mm: ksft_ksm.sh # exit=1
...
# timeout set to 900
# selftests: mm: ksft_mkdirty.sh
# TAP version 13
# # -----------------
# # running ./mkdirty
# # -----------------
# # # [INFO] detected THP size: 2048 KiB
# # TAP version 13
# # 1..6
# # # [INFO] PTRACE write access
# # not ok 1 write() failed
# # # [INFO] PTRACE write access to THP
# # not ok 2 write() failed
# # # [INFO] Page migration
# # ok 3 SIGSEGV generated, page not modified
# # # [INFO] Page migration of THP
# # ok 4 SIGSEGV generated, page not modified
# # # [INFO] PTE-mapping a THP
# # ok 5 SIGSEGV generated, page not modified
# # # [INFO] UFFDIO_COPY
# # ok 6 SIGSEGV generated, page not modified
# # Bail out! 2 out of 6 tests failed
# # # Totals: pass:4 fail:2 xfail:0 xpass:0 skip:0 error:0
# # [FAIL]
# not ok 1 mkdirty # exit=1
# hwpoison_inject
# # SUMMARY: PASS=0 SKIP=0 FAIL=1
# 1..1
not ok 14 selftests: mm: ksft_mkdirty.sh # exit=1
below is from
[test failed on fix commit a3907a3169d09ebaeef9631ab6a4534314545ef7]
# timeout set to 900
# selftests: mm: ksft_ksm.sh
# TAP version 13
# # -----------------------------
# # running ./ksm_tests -H -s 100
# # -----------------------------
# # Number of normal pages: 0
# # Number of huge pages: 50
# # Total size: 100 MiB
# # Total time: 0.201459173 s
# # Average speed: 496.378 MiB/s
# # [PASS]
# ok 1 ksm_tests -H -s 100
# # -----------------------------
# # running ./ksm_tests -P -s 100
# # -----------------------------
# # Total size: 100 MiB
# # Total time: 0.197418993 s
# # Average speed: 506.537 MiB/s
# # [PASS]
# ok 2 ksm_tests -P -s 100
# # ----------------------------
# # running ./ksm_tests -M -p 10
# # ----------------------------
# # OK
# # [PASS]
# ok 3 ksm_tests -M -p 10
# # ----------------------
# # running ./ksm_tests -U
# # ----------------------
# # OK
# # [PASS]
# ok 4 ksm_tests -U
# # ---------------------------------
# # running ./ksm_tests -Z -p 10 -z 0
# # ---------------------------------
# # OK
# # [PASS]
# ok 5 ksm_tests -Z -p 10 -z 0
# # ---------------------------------
# # running ./ksm_tests -Z -p 10 -z 1
# # ---------------------------------
# # OK
# # [PASS]
# ok 6 ksm_tests -Z -p 10 -z 1
# # ------------------------------
# # running ./ksm_functional_tests
# # ------------------------------
# # TAP version 13
# # 1..10
# # # [RUN] test_unmerge
# # ok 1 Pages were unmerged
# # # [RUN] test_unmerge_zero_pages
# # ok 2 KSM zero pages were unmerged
# # # [RUN] test_unmerge_discarded
# # ok 3 Pages were unmerged
# # # [RUN] test_unmerge_uffd_wp
# # ok 4 Pages were unmerged
# # # [RUN] test_prot_none
# # not ok 5 ptrace write failed
# # # [RUN] test_prctl
# # ok 6 Setting/clearing PR_SET_MEMORY_MERGE works
# # # [RUN] test_prctl_fork
# # ok 7 PR_SET_MEMORY_MERGE value is inherited
# # # [RUN] test_prctl_fork_exec
# # ok 8 PR_SET_MEMORY_MERGE value is inherited
# # # [RUN] test_prctl_unmerge
# # ok 9 Pages were unmerged
# # # [RUN] test_fork_ksm_merging_page_count
# # ok 10 ksm_merging_pages is not inherited after fork
# # Bail out! 1 out of 10 tests failed
# # # Totals: pass:9 fail:1 xfail:0 xpass:0 skip:0 error:0
# # [FAIL]
# not ok 7 ksm_functional_tests # exit=1
# hwpoison_inject
# # SUMMARY: PASS=6 SKIP=0 FAIL=1
# 1..7
not ok 7 selftests: mm: ksft_ksm.sh # exit=1
...
# timeout set to 900
# selftests: mm: ksft_mkdirty.sh
# TAP version 13
# # -----------------
# # running ./mkdirty
# # -----------------
# # # [INFO] detected THP size: 2048 KiB
# # TAP version 13
# # 1..6
# # # [INFO] PTRACE write access
# # not ok 1 write() failed
# # # [INFO] PTRACE write access to THP
# # not ok 2 write() failed
# # # [INFO] Page migration
# # ok 3 SIGSEGV generated, page not modified
# # # [INFO] Page migration of THP
# # ok 4 SIGSEGV generated, page not modified
# # # [INFO] PTE-mapping a THP
# # ok 5 SIGSEGV generated, page not modified
# # # [INFO] UFFDIO_COPY
# # ok 6 SIGSEGV generated, page not modified
# # Bail out! 2 out of 6 tests failed
# # # Totals: pass:4 fail:2 xfail:0 xpass:0 skip:0 error:0
# # [FAIL]
# not ok 1 mkdirty # exit=1
# hwpoison_inject
# # SUMMARY: PASS=0 SKIP=0 FAIL=1
# 1..1
not ok 14 selftests: mm: ksft_mkdirty.sh # exit=1
The kernel config and materials to reproduce are available at:
https://download.01.org/0day-ci/archive/20260429/202604290921.ac2bf5ff-lkp@intel.com
--
0-DAY CI Kernel Test Service
https://github.com/intel/lkp-tests/wiki
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2026-04-29 8:26 [linus:master] [proc] 599bbba5a3: kernel-selftests.mm.ksft_mkdirty.sh.mkdirty.fail kernel test robot
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