Bug 1184848

Summary: Fails to start when homedirs on NFS
Product: Red Hat Enterprise Linux 6 Reporter: Rik Theys <rik.theys>
Component: selinux-policyAssignee: Miroslav Grepl <mgrepl>
Status: CLOSED DUPLICATE QA Contact: Milos Malik <mmalik>
Severity: unspecified Docs Contact:
Priority: unspecified    
Version: 6.6CC: dwalsh, lvrabec, mgrepl, mmalik, plautrba, pvrabec, ssekidde
Target Milestone: rc   
Target Release: ---   
Hardware: All   
OS: Linux   
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Fixed In Version: Doc Type: Bug Fix
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Clone Of: Environment:
Last Closed: 2015-06-03 07:28:28 UTC Type: Bug
Regression: --- Mount Type: ---
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oVirt Team: --- RHEL 7.3 requirements from Atomic Host:
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Description Rik Theys 2015-01-22 10:52:54 UTC
Description of problem:

The latest chromium-browser releases fail to start when home directories are on NFS. It seems an updated SELinux policy is needed to allow chrome_sandbox_t access to nfs_t (and autofs_t) when the use_nfs_home_dirs SELinux boolean is set.

Version-Release number of selected component (if applicable):
chromium-browser-39.0.2171.99-1.el6_6.x86_64


How reproducible:
Always

Steps to Reproduce:
1. Start chromium-browser as a user with an NFS mounted home directory
2.
3.

Actual results:
The following error is thrown and no windows is opened.
$ chromium-browser 
[0122/113309:ERROR:nss_util.cc(94)] Failed to create /users/system/rtheys/.pki/nssdb directory.
[0122/113309:FATAL:chrome_main_delegate.cc(359)] Check failed: process_type.empty(). Unable to get the user data directory for process type: zygote


Expected results:
Chromium opens.

Additional info:

The following SELinux module fixes this for me:

module esat_chromium 1.0;

require {
        type autofs_t;
        type chrome_sandbox_t;
        type nfs_t;
        class dir { getattr search };
        class filesystem getattr;
}

#============= chrome_sandbox_t ==============


allow chrome_sandbox_t autofs_t:dir { getattr search };
allow chrome_sandbox_t nfs_t:filesystem getattr;

Comment 3 Milos Malik 2015-05-22 06:24:17 UTC
# rpm -qa selinux-policy\*
selinux-policy-minimum-3.7.19-268.el6.noarch
selinux-policy-mls-3.7.19-268.el6.noarch
selinux-policy-3.7.19-268.el6.noarch
selinux-policy-doc-3.7.19-268.el6.noarch
selinux-policy-targeted-3.7.19-268.el6.noarch
# sesearch -s chrome_sandbox_t -t nfs_t -c filesystem -p getattr -A -C

# sesearch -s chrome_sandbox_t -t autofs_t -c dir -p search -A -C

# 

Necessary allow rules are not present in the latest selinux-policy build.

Comment 4 Miroslav Grepl 2015-06-03 07:28:28 UTC

*** This bug has been marked as a duplicate of bug 1185686 ***