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Bug 1767744 - numactl bus error while using the --touch
Summary: numactl bus error while using the --touch
Keywords:
Status: CLOSED NOTABUG
Alias: None
Product: Red Hat Enterprise Linux 7
Classification: Red Hat
Component: numactl
Version: 7.7
Hardware: Unspecified
OS: Unspecified
unspecified
unspecified
Target Milestone: rc
: ---
Assignee: Pingfan Liu
QA Contact: qe-baseos-daemons
URL:
Whiteboard:
Depends On: 1763628
Blocks: 1653509
TreeView+ depends on / blocked
 
Reported: 2019-11-01 09:57 UTC by Petr Sklenar
Modified: 2019-11-08 05:26 UTC (History)
1 user (show)

Fixed In Version:
Doc Type: If docs needed, set a value
Doc Text:
Clone Of:
Environment:
Last Closed: 2019-11-08 05:25:33 UTC
Target Upstream Version:
Embargoed:

Attachments (Terms of Use)

Description Petr Sklenar 2019-11-01 09:57:01 UTC 
Description of problem:
numactl bus error while using the --touch

Version-Release number of selected component (if applicable):
numactl-2.0.12-5.el7.x86_64 
numactl-2.0.12-3.el7_7.1.x86_64 

How reproducible:
always

Steps to Reproduce:

1,
version 2.0.12-4.el7
[root@ci-vm-10-0-136-119 ~]# numactl --length=10GB --file /dev/shm/data1 --interleave=all --touch
ftruncate: Invalid argument
Segmentation fault

2, 
version with bugfix for BZ#1763628
numactl-2.0.12-3.el7_7.1.x86_64

[root@ci-vm-10-0-136-119 ~]# numactl --length=10GB --file /dev/shm/data1 --interleave=all --touch
Bus error
[root@ci-vm-10-0-136-119 ~]# echo $?
135


Actual results:


the interesting is that it returns more type of errors depends on size of length:
low mem machine:

No ERROR:
[root@ci-vm-10-0-136-119 ~]# numactl --length=100M --file /dev/shm/data1 --interleave=all --touch

ERROR:
[root@ci-vm-10-0-136-119 ~]# numactl --length=10000M --file /dev/shm/data1 --interleave=all --touch
Bus error

bigger ERROR:
[root@ci-vm-10-0-136-119 ~]# numactl --length=10000000G --file /dev/shm/data1 --interleave=all --touch
numactl: shm mmap: Cannot allocate memory

and the biggest ERROR:
[root@ci-vm-10-0-136-119 ~]# numactl --length=1000000000000000G --file /dev/shm/data1 --interleave=all --touch
ftruncate: Invalid argument
numactl: shm mmap: Cannot allocate memory

free
              total        used        free      shared  buff/cache   available
Mem:        1882036      149744      235092      949744     1497200      623104




Expected results:
no errors

Additional info:
Comment 2 Pingfan Liu 2019-11-08 05:25:33 UTC 

*** This bug has been marked as a duplicate of bug 1761749 ***
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