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Message-ID: <202507310843.52fb528f-lkp@intel.com>
Date: Thu, 31 Jul 2025 15:17:53 +0800
From: kernel test robot <oliver.sang@...el.com>
To: <nicolas.bouchinet@....cyber.gouv.fr>
CC: <oe-lkp@...ts.linux.dev>, <lkp@...el.com>,
	<linux-security-module@...r.kernel.org>, <ltp@...ts.linux.it>, Kees Cook
	<kees@...nel.org>, Paul Moore <paul@...l-moore.com>, James Morris
	<jmorris@...ei.org>, "Serge E. Hallyn" <serge@...lyn.com>,
	<linux-kernel@...r.kernel.org>, Olivier Bal-Petre
	<olivier.bal-petre@....cyber.gouv.fr>, Nicolas Bouchinet
	<nicolas.bouchinet@....gouv.fr>, <oliver.sang@...el.com>
Subject: Re: [PATCH] lsm: yama: Check for PTRACE_MODE_READ_FSCREDS access


Hello,

kernel test robot noticed "ltp.migrate_pages02.fail" on:

commit: 0d6496041d407998103595db3dc42240f124a7f1 ("[PATCH] lsm: yama: Check for PTRACE_MODE_READ_FSCREDS access")
url: https://github.com/intel-lab-lkp/linux/commits/nicolas-bouchinet-oss-cyber-gouv-fr/lsm-yama-Check-for-PTRACE_MODE_READ_FSCREDS-access/20250718-164849
patch link: https://lore.kernel.org/all/20250718-yama_fix-v1-1-a51455359e67@ssi.gouv.fr/
patch subject: [PATCH] lsm: yama: Check for PTRACE_MODE_READ_FSCREDS access

in testcase: ltp
version: ltp-x86_64-0e4be9201-1_20250726
with following parameters:

	test: numa/migrate_pages02



config: x86_64-rhel-9.4-ltp
compiler: gcc-12
test machine: 224 threads 2 sockets Intel(R) Xeon(R) Platinum 8480+ (Sapphire Rapids) with 256G 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@...el.com>
| Closes: https://lore.kernel.org/oe-lkp/202507310843.52fb528f-lkp@intel.com



Running tests.......
<<<test_start>>>
tag=migrate_pages02 stime=1753707486
cmdline="migrate_pages02"
contacts=""
analysis=exit
<<<test_output>>>
tst_tmpdir.c:316: TINFO: Using /tmp/ltp-5PDNJlpHwH/LTP_mig4NxxK0 as tmpdir (tmpfs filesystem)
tst_test.c:2004: TINFO: LTP version: 20250530-108-g0e4be9201
tst_test.c:2007: TINFO: Tested kernel: 6.16.0-rc2-00013-g0d6496041d40 #1 SMP PREEMPT_DYNAMIC Mon Jul 28 20:46:21 CST 2025 x86_64
tst_kconfig.c:88: TINFO: Parsing kernel config '/proc/config.gz'
tst_kconfig.c:676: TINFO: CONFIG_KASAN kernel option detected which might slow the execution
tst_test.c:1825: TINFO: Overall timeout per run is 0h 02m 00s
migrate_pages02.c:313: TINFO: Using nodes: 0 1
migrate_pages02.c:143: TINFO: current_process, cap_sys_nice: 1
migrate_pages02.c:147: TINFO: private anonymous: 0x7f1006150000
migrate_pages02.c:75: TINFO: pid(6801) migrate pid 0 to node -> 1
migrate_pages02.c:96: TINFO: migrate_pages could not migrate all pages, not migrated: 452
migrate_pages02.c:125: TPASS: pid(6801) addr 0x7f1006150000 is on expected node: 1
migrate_pages02.c:75: TINFO: pid(6801) migrate pid 0 to node -> 0
migrate_pages02.c:125: TPASS: pid(6801) addr 0x7f1006150000 is on expected node: 0
migrate_pages02.c:159: TINFO: shared anonymous: 0x7f1006150000
migrate_pages02.c:75: TINFO: pid(6801) migrate pid 0 to node -> 1
migrate_pages02.c:96: TINFO: migrate_pages could not migrate all pages, not migrated: 452
migrate_pages02.c:125: TPASS: pid(6801) addr 0x7f1006150000 is on expected node: 1
migrate_pages02.c:167: TINFO: child shared anonymous, cap_sys_nice: 1
migrate_pages02.c:75: TINFO: pid(6803) migrate pid 0 to node -> 0
migrate_pages02.c:125: TPASS: pid(6803) addr 0x7f100614f000 is on expected node: 0
migrate_pages02.c:125: TPASS: pid(6801) addr 0x7f1006150000 is on expected node: 0
migrate_pages02.c:143: TINFO: current_process, cap_sys_nice: 0
migrate_pages02.c:147: TINFO: private anonymous: 0x7f1006150000
migrate_pages02.c:75: TINFO: pid(6801) migrate pid 0 to node -> 1
migrate_pages02.c:96: TINFO: migrate_pages could not migrate all pages, not migrated: 452
migrate_pages02.c:125: TPASS: pid(6801) addr 0x7f1006150000 is on expected node: 1
migrate_pages02.c:75: TINFO: pid(6801) migrate pid 0 to node -> 0
migrate_pages02.c:125: TPASS: pid(6801) addr 0x7f1006150000 is on expected node: 0
migrate_pages02.c:159: TINFO: shared anonymous: 0x7f1006150000
migrate_pages02.c:75: TINFO: pid(6801) migrate pid 0 to node -> 1
migrate_pages02.c:96: TINFO: migrate_pages could not migrate all pages, not migrated: 452
migrate_pages02.c:125: TPASS: pid(6801) addr 0x7f1006150000 is on expected node: 1
migrate_pages02.c:167: TINFO: child shared anonymous, cap_sys_nice: 0
migrate_pages02.c:75: TINFO: pid(6804) migrate pid 0 to node -> 0
migrate_pages02.c:125: TPASS: pid(6804) addr 0x7f100614f000 is on expected node: 0
migrate_pages02.c:125: TPASS: pid(6801) addr 0x7f1006150000 is on expected node: 1
migrate_pages02.c:200: TINFO: other_process, cap_sys_nice: 1
migrate_pages02.c:75: TINFO: pid(6805) migrate pid 0 to node -> 0
migrate_pages02.c:125: TPASS: pid(6805) addr 0x7f1006150000 is on expected node: 0
migrate_pages02.c:75: TINFO: pid(6806) migrate pid 6805 to node -> 1
migrate_pages02.c:96: TINFO: migrate_pages could not migrate all pages, not migrated: 362
migrate_pages02.c:125: TPASS: pid(6805) addr 0x7f1006150000 is on expected node: 1
migrate_pages02.c:200: TINFO: other_process, cap_sys_nice: 0
migrate_pages02.c:75: TINFO: pid(6807) migrate pid 0 to node -> 0
migrate_pages02.c:125: TPASS: pid(6807) addr 0x7f1006150000 is on expected node: 0
migrate_pages02.c:75: TINFO: pid(6808) migrate pid 6807 to node -> 1
migrate_pages02.c:92: TFAIL: migrate_pages failed ret: -1, : EPERM (1)
migrate_pages02.c:55: TINFO: mem_stats pid: 6807, node: 1
Name:	migrate_pages02
Umask:	0000
State:	S (sleeping)
Tgid:	6807
Ngid:	0
Pid:	6807
PPid:	6801
TracerPid:	0
Uid:	65534	65534	65534	65534
Gid:	0	0	0	0
FDSize:	64
Groups:	 
NStgid:	6807
NSpid:	6807
NSpgid:	6801
NSsid:	2420
Kthread:	0
VmPeak:	    2868 kB
VmSize:	    2868 kB
VmLck:	       0 kB
VmPin:	       0 kB
VmHWM:	       0 kB
VmRSS:	       0 kB
RssAnon:	       0 kB
RssFile:	       0 kB
RssShmem:	       0 kB
VmData:	     348 kB
VmStk:	     136 kB
VmExe:	     132 kB
VmLib:	    1548 kB
VmPTE:	      48 kB
VmSwap:	       0 kB
HugetlbPages:	       0 kB
CoreDumping:	0
THP_enabled:	1
untag_mask:	0xffffffffffffffff
Threads:	1
SigQ:	0/444866
SigPnd:	0000000000000000
ShdPnd:	0000000000000000
SigBlk:	0000000000000000
SigIgn:	0000000000000004
SigCgt:	0000000000000000
CapInh:	0000000000000000
CapPrm:	0000000000000000
CapEff:	0000000000000000
CapBnd:	000001ffffffffff
CapAmb:	0000000000000000
NoNewPrivs:	0
Seccomp:	0
Seccomp_filters:	0
Speculation_Store_Bypass:	thread vulnerable
SpeculationIndirectBranch:	conditional enabled
Cpus_allowed:	ffffffff,ffffffff,ffffffff,ffffffff,ffffffff,ffffffff,ffffffff
Cpus_allowed_list:	0-223
Mems_allowed:	00000000,00000000,00000000,00000000,00000000,00000000,00000000,00000000,00000000,00000000,00000000,00000000,00000000,00000000,00000000,00000000,00000000,00000000,00000000,00000000,00000000,00000000,00000000,00000000,00000000,00000000,00000000,00000000,00000000,00000000,00000000,00000003
Mems_allowed_list:	0-1
voluntary_ctxt_switches:	5
nonvoluntary_ctxt_switches:	0
cat: /proc/6807/numa_maps: Permission denied
migrate_pages02.c:65: TINFO: Node id: 1, size: 117471789056, free: 106811031552
migrate_pages02.c:129: TFAIL: pid(6807) addr 0x7f1006150000 not on expected node: 0 , expected 1
migrate_pages02.c:55: TINFO: mem_stats pid: 6807, node: 1
Name:	migrate_pages02
Umask:	0000
State:	S (sleeping)
Tgid:	6807
Ngid:	0
Pid:	6807
PPid:	6801
TracerPid:	0
Uid:	65534	65534	65534	65534
Gid:	0	0	0	0
FDSize:	64
Groups:	 
NStgid:	6807
NSpid:	6807
NSpgid:	6801
NSsid:	2420
Kthread:	0
VmPeak:	    2904 kB
VmSize:	    2868 kB
VmLck:	       0 kB
VmPin:	       0 kB
VmHWM:	       0 kB
VmRSS:	       0 kB
RssAnon:	       0 kB
RssFile:	       0 kB
RssShmem:	       0 kB
VmData:	     348 kB
VmStk:	     136 kB
VmExe:	     132 kB
VmLib:	    1548 kB
VmPTE:	      48 kB
VmSwap:	       0 kB
HugetlbPages:	       0 kB
CoreDumping:	0
THP_enabled:	1
untag_mask:	0xffffffffffffffff
Threads:	1
SigQ:	0/444866
SigPnd:	0000000000000000
ShdPnd:	0000000000000000
SigBlk:	0000000000010000
SigIgn:	0000000000000006
SigCgt:	0000000000000000
CapInh:	0000000000000000
CapPrm:	0000000000000000
CapEff:	0000000000000000
CapBnd:	000001ffffffffff
CapAmb:	0000000000000000
NoNewPrivs:	0
Seccomp:	0
Seccomp_filters:	0
Speculation_Store_Bypass:	thread vulnerable
SpeculationIndirectBranch:	conditional enabled
Cpus_allowed:	ffffffff,ffffffff,ffffffff,ffffffff,ffffffff,ffffffff,ffffffff
Cpus_allowed_list:	0-223
Mems_allowed:	00000000,00000000,00000000,00000000,00000000,00000000,00000000,00000000,00000000,00000000,00000000,00000000,00000000,00000000,00000000,00000000,00000000,00000000,00000000,00000000,00000000,00000000,00000000,00000000,00000000,00000000,00000000,00000000,00000000,00000000,00000000,00000003
Mems_allowed_list:	0-1
voluntary_ctxt_switches:	7
nonvoluntary_ctxt_switches:	0
cat: /proc/6807/numa_maps: Permission denied
migrate_pages02.c:65: TINFO: Node id: 1, size: 117471789056, free: 106811031552

Summary:
passed   13
failed   2
broken   0
skipped  0
warnings 0
incrementing stop
<<<execution_status>>>
initiation_status="ok"
duration=0 termination_type=exited termination_id=1 corefile=no
cutime=0 cstime=11
<<<test_end>>>
INFO: ltp-pan reported some tests FAIL
LTP Version: 20250530-108-g0e4be9201

       ###############################################################

            Done executing testcases.
            LTP Version:  20250530-108-g0e4be9201
       ###############################################################




The kernel config and materials to reproduce are available at:
https://download.01.org/0day-ci/archive/20250731/202507310843.52fb528f-lkp@intel.com



-- 
0-DAY CI Kernel Test Service
https://github.com/intel/lkp-tests/wiki

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