Bug 1143 - [anck 5.10][x86_64/aarch64]docker 中MemAvailable大于MemTotal
Summary: [anck 5.10][x86_64/aarch64]docker 中MemAvailable大于MemTotal
Status: RESOLVED FIXED
Alias: None
Product: ANCK 5.10 Dev
Classification: ANCK
Component: mm (show other bugs) mm
Version: unspecified
Hardware: All Linux
: P3-Medium S3-normal
Target Milestone: ---
Assignee: xuyu
QA Contact: shuming
URL:
Whiteboard:
Keywords:
Depends on:
Blocks:
 
Reported: 2022-05-09 15:39 UTC by kangjiangbo
Modified: 2025-01-14 16:46 UTC (History)
2 users (show)

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Description kangjiangbo 2022-05-09 15:39:04 UTC 
Description of problem:
5.10 版本x86/arm环境上，创建docker，docker中查看内存信息，发现MemAvailable大于MemTotal

Version-Release number of selected component (if applicable):

How reproducible:


Steps to Reproduce:
1.拉起docker （我这用的是podman-docker）
2.容器中  free 或者cat /proc/meminfo 查看内存信息


Actual results:
MemAvailable大于MemTotal、
free的时候第三列used变为负数

cat /proc/meminfo
MemTotal:       789816548 kB
MemFree:        789013988 kB
MemAvailable:   957537872 kB
Buffers:               0 kB
Cached:           687324 kB
SwapCached:       236044 kB
Active:           101508 kB
Inactive:         654224 kB
Active(anon):        132 kB
Inactive(anon):   224036 kB
Active(file):     101376 kB
Inactive(file):   430188 kB
Unevictable:           0 kB
Mlocked:               0 kB
SwapTotal:       2097148 kB
SwapFree:        2097148 kB
Dirty:                 0 kB
Writeback:           396 kB
AnonPages:         59088 kB
Mapped:             8976 kB
Shmem:            154836 kB
KReclaimable:     439660 kB
Slab:           179211968 kB
SReclaimable:   167992320 kB
SUnreclaim:     11219648 kB
KernelStack:        1392 kB
PageTables:         6764 kB
NFS_Unstable:          0 kB
Bounce:                0 kB
WritebackTmp:          0 kB
CommitLimit:    397005420 kB
Committed_AS:          0 kB
VmallocTotal:   135290159040 kB
VmallocUsed:       52284 kB
VmallocChunk:          0 kB
Percpu:           393984 kB
HardwareCorrupted:     0 kB
AnonHugePages:    337920 kB
ShmemHugePages:        0 kB
ShmemPmdMapped:        0 kB
FileHugePages:         0 kB
FilePmdMapped:         0 kB
DupText:               0 kB
HugePages_Total:       0
HugePages_Free:        0
HugePages_Rsvd:        0
HugePages_Surp:        0
Hugepagesize:       2048 kB
Hugetlb:               0 kB
[root@nu4f13165 /]# free
              total        used        free      shared  buff/cache   available
Mem:      789816548  -167877068   789013972      154836   168679644   957538120
Swap:       2097148           0     2097148


Expected results:


Additional info:
Comment 1 xuyu alibaba_cloud_group 2022-05-11 10:56:51 UTC 
https://gitee.com/anolis/cloud-kernel/pulls/354

本地验证通过，待测试同学验证。
Comment 2 kangjiangbo 2022-05-19 15:40:20 UTC 
验证通过
#cat /proc/meminfo
MemTotal:       791083020 kB
MemFree:        789993372 kB
MemAvailable:   790011176 kB
Buffers:               0 kB
Cached:            25872 kB
SwapCached:            0 kB
Active:             2112 kB
Inactive:        1082012 kB
Active(anon):          0 kB
Inactive(anon):  1066832 kB
Active(file):       2112 kB
Inactive(file):    15180 kB
Unevictable:           0 kB
Mlocked:               0 kB
SwapTotal:       2097148 kB
SwapFree:        2097148 kB
Dirty:                 0 kB
Writeback:             0 kB
AnonPages:       1058296 kB
Mapped:             6204 kB
Shmem:              8316 kB
KReclaimable:     375148 kB
Slab:               2580 kB
SReclaimable:        512 kB
SUnreclaim:         2068 kB
KernelStack:         768 kB
PageTables:        14020 kB
NFS_Unstable:          0 kB
Bounce:                0 kB
WritebackTmp:          0 kB
CommitLimit:    397638656 kB
Committed_AS:          0 kB
VmallocTotal:   34359738367 kB
VmallocUsed:       35944 kB
VmallocChunk:          0 kB
Percpu:            64512 kB
HardwareCorrupted:     0 kB
AnonHugePages:   1081344 kB
ShmemHugePages:        0 kB
ShmemPmdMapped:        0 kB
FileHugePages:         0 kB
FilePmdMapped:         0 kB
DupText:               0 kB
HugePages_Total:       0
HugePages_Free:        0
HugePages_Rsvd:        0
HugePages_Surp:        0
Hugepagesize:       2048 kB
Hugetlb:               0 kB
DirectMap4k:      655104 kB
DirectMap2M:    11327488 kB
DirectMap1G:    792723456 kB
Comment 3 xuyu alibaba_cloud_group 2022-06-01 17:34:07 UTC 
https://gitee.com/anolis/cloud-kernel/pulls/354

已合入。
Comment 4 小龙 admin 2025-01-14 16:46:15 UTC 
The PR Link: https://gitee.com/anolis/cloud-kernel/pulls/4496