Bug 1304626

Summary: ltp ftruncate fails
Product: Red Hat Enterprise Linux 7 Reporter: Bill Peck <bpeck>
Component: kernel-aarch64Assignee: Steve Whitehouse <swhiteho>
kernel-aarch64 sub component: File Systems QA Contact: Jeff Bastian <jbastian>
Status: CLOSED ERRATA Docs Contact:
Severity: unspecified    
Priority: unspecified CC: jbastian, jburke, jstancek, mlangsdo
Version: 7.3   
Target Milestone: rc   
Target Release: ---   
Hardware: aarch64   
OS: Unspecified   
Whiteboard:
Fixed In Version: kernel-aarch64-4.5.0-0.rc5.29.el7 Doc Type: Bug Fix
Doc Text:
Story Points: ---
Clone Of: Environment:
Last Closed: 2016-11-03 22:20:21 UTC Type: Bug
Regression: --- Mount Type: ---
Documentation: --- CRM:
Verified Versions: Category: ---
oVirt Team: --- RHEL 7.3 requirements from Atomic Host:
Cloudforms Team: --- Target Upstream Version:
Embargoed:

Description Bill Peck 2016-02-04 08:47:35 UTC 
Description of problem:

ltp-lite ftruncate fails on aarch64.

ftruncate04                    FAIL       2    
ftruncate04_64                 FAIL       2    

Version-Release number of selected component (if applicable):
4.5.0-0.rc2.25.el7

How reproducible:
everytime

Steps to Reproduce:
1. execute ltp-lite task from beaker

Additional info:
will provide beaker links in followup comment
Comment 3 Mark Langsdorf 2016-02-17 18:48:54 UTC 
appears to be related to the mandatory locking option

the command line below fails
sudo mount -o loop,mand test.img /mnt

the command lines below succeeds
sudo mount -o loop,nomand test.img /mnt
sudo mount -o loop test.img /mnt
Comment 4 Jan Stancek 2016-02-19 15:15:06 UTC 
Presumably because of this commit:
  commit 9e8925b67a809bb27ce4b7d352d67f25cf1d7fc5
  Author: Jeff Layton <jeff.layton>
  Date:   Mon Nov 16 09:49:34 2015 -0500
    locks: Allow disabling mandatory locking at compile time

@@ -2677,6 +2685,8 @@ long do_mount(const char *dev_name, const char __user *dir_name,
                                   type_page, flags, data_page);
        if (!retval && !may_mount())
                retval = -EPERM;
+       if (!retval && (flags & MS_MANDLOCK) && !may_mandlock())
+               retval = -EPERM;


$ git tag --contains 9e8925b67a809bb27ce4b7d352d67f25cf1d7fc5
v4.5-rc1
v4.5-rc2
v4.5-rc3

This matches KT1 results, this test was working up to kernel-4.4.0-0.23.el7.

# grep MANDATORY /boot/config-4.5.0-0.rc4.28.el7.aarch64 
# CONFIG_MANDATORY_FILE_LOCKING is not set

Upstream defaults to 'y'.
Comment 8 errata-xmlrpc 2016-11-03 22:20:21 UTC 
Since the problem described in this bug report should be
resolved in a recent advisory, it has been closed with a
resolution of ERRATA.

For information on the advisory, and where to find the updated
files, follow the link below.

If the solution does not work for you, open a new bug report.

https://rhn.redhat.com/errata/RHBA-2016-2145.html