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0000185Anolis OS 8kernelpublic2021-07-01 17:262021-07-04 14:02
报告员yinyongchen 分派给geliwei-ali  
优先级normal严重性minor出现频率always
状态 assigned处理状况open 
平台aarch64操作系统Anolis OS操作系统版本8.4
标题0000185: [Anolis 8.4-4.18-aarch64] ltp-latest-controllers->用例memcg_subgroup_charge，测试进程加入task文件后被kill -0杀掉
描述[缺陷描述]：
ltp-latest-controllers->用例memcg_subgroup_charge，测试进程加入开启cgroup内存限额的task文件后被kill -0杀掉
Anolis 8.2-4.18-aarch64无此问题
T-one链接：https://tone.aliyun-inc.com/ws/6yddz4ne/test_result/27632

错误日志如下：
<<<test_start>>>
tag=memcg_subgroup_charge stime=1625060114
cmdline="memcg_subgroup_charge.sh"
contacts=""
analysis=exit
<<<test_output>>>
memcg_subgroup_charge 1 TINFO: Starting test 1
/tmp/tone/run/ltp/testcases/bin/memcg_lib.sh: line 522: echo: write error: Device or resource busy
memcg_subgroup_charge 1 TINFO: set /dev/memcg/memory.use_hierarchy to 0 failed
memcg_subgroup_charge 1 TINFO: Running memcg_process --mmap-anon -s 2162688
memcg_subgroup_charge 1 TINFO: Warming up pid: 235279
memcg_subgroup_charge 1 TINFO: Process is still here after warm up: 235279
/tmp/tone/run/ltp/testcases/bin/memcg_lib.sh: line 120: 235279 Killed memcg_process --mmap-anon -s $PAGESIZES
memcg_subgroup_charge 1 TFAIL: rss is 0, 2162688 expected
/tmp/tone/run/ltp/testcases/bin/memcg_lib.sh: line 429: echo: write error: No such process
memcg_subgroup_charge 2 TPASS: rss is 0 as expected
/tmp/tone/run/ltp/testcases/bin/memcg_lib.sh: line 434: echo: write error: No such process
memcg_subgroup_charge 3 TINFO: Starting test 2
/tmp/tone/run/ltp/testcases/bin/memcg_lib.sh: line 522: echo: write error: Device or resource busy
memcg_subgroup_charge 3 TINFO: set /dev/memcg/memory.use_hierarchy to 0 failed
memcg_subgroup_charge 3 TINFO: Running memcg_process --mmap-anon -s 2162688
memcg_subgroup_charge 3 TINFO: Warming up pid: 235327
memcg_subgroup_charge 3 TINFO: Process is still here after warm up: 235327
/tmp/tone/run/ltp/testcases/bin/memcg_lib.sh: line 120: 235327 Killed memcg_process --mmap-anon -s $PAGESIZES
memcg_subgroup_charge 3 TFAIL: rss is 0, 2162688 expected
/tmp/tone/run/ltp/testcases/bin/memcg_lib.sh: line 429: echo: write error: No such process
memcg_subgroup_charge 4 TPASS: rss is 0 as expected
/tmp/tone/run/ltp/testcases/bin/memcg_lib.sh: line 434: echo: write error: No such process
memcg_subgroup_charge 5 TINFO: Starting test 3
/tmp/tone/run/ltp/testcases/bin/memcg_lib.sh: line 522: echo: write error: Device or resource busy
memcg_subgroup_charge 5 TINFO: set /dev/memcg/memory.use_hierarchy to 0 failed
memcg_subgroup_charge 5 TINFO: Running memcg_process --mmap-anon -s 2162688
memcg_subgroup_charge 5 TINFO: Warming up pid: 235358
memcg_subgroup_charge 5 TINFO: Process is still here after warm up: 235358
/tmp/tone/run/ltp/testcases/bin/memcg_lib.sh: line 120: 235358 Killed memcg_process --mmap-anon -s $PAGESIZES
memcg_subgroup_charge 5 TFAIL: rss is 0, 2162688 expected
/tmp/tone/run/ltp/testcases/bin/memcg_lib.sh: line 429: echo: write error: No such process
memcg_subgroup_charge 6 TPASS: rss is 0 as expected
/tmp/tone/run/ltp/testcases/bin/memcg_lib.sh: line 434: echo: write error: No such process
<<<execution_status>>>
initiation_status="ok"
duration=4 termination_type=exited termination_id=1 corefile=no
cutime=10 cstime=19
<<<test_end>>>

[重现概率]
必现

[重现环境]

Host:虚拟机 ，aarch64

OS:
# cat /etc/os-release
NAME="Anolis OS"
VERSION="8.4"
ID="anolis"
ID_LIKE="rhel fedora centos"
VERSION_ID="8.4"
PLATFORM_ID="platform:an8"
PRETTY_NAME="Anolis OS 8.4"
ANSI_COLOR="0;31"
HOME_URL="https://openanolis.cn/"

kernel:
# uname -r
4.18.0-305.an8.aarch64

[期望结果]：
用例PASS

[实际结果]：
用例FAIL

[初步分析]：
memcg_process.c 是用例自己的测试程序，主要用来申请与释放内存，接收一次USR1信号时会使用mmap申请与限额等值的内存，再接收一次USR1信号时则会释放掉之前申请的内存；同时程序接收到INT信号时则会退出
用例中的warmup()接口在测试程序未加入cgroup限额时发送了两次USR1信号和一次-0信号，测试程序未退出(经测试此时只发送一次USR1信号再发送-0信号也不会退出)；但在把测试程序的pid加入cgroup限额后，发送一次USR1信号后再发送一次-0信号时测试程序会直接被kill
以此现象分析，该问题应该与cgroup内存限额功能有关
问题重现步骤git clone http://gitlab.alibaba-inc.com/alikernel/ltp.git --branch LTP-20190517

make autotools

./configure

make && make install

 /opt/ltp/runltp -f controllers -s memcg_subgroup_charge
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活动

wb-wpp899309

2021-07-01 20:13

报告者   ~0000296

4.18.0-305.an8.x86_64 有同样失败

问题历史

日期 用户名 字段 更改
2021-07-01 17:26 yinyongchen 新建问题
2021-07-01 20:13 wb-wpp899309 注释已添加: 0000296
2021-07-04 14:02 jacobwang 分派给 => geliwei-ali
2021-07-04 14:02 jacobwang 状态 新建 => 已分配