RHEL Engineering is moving the tracking of its product development work on RHEL 6 through RHEL 9 to Red Hat Jira (issues.redhat.com). If you're a Red Hat customer, please continue to file support cases via the Red Hat customer portal. If you're not, please head to the "RHEL project" in Red Hat Jira and file new tickets here. Individual Bugzilla bugs in the statuses "NEW", "ASSIGNED", and "POST" are being migrated throughout September 2023. Bugs of Red Hat partners with an assigned Engineering Partner Manager (EPM) are migrated in late September as per pre-agreed dates. Bugs against components "kernel", "kernel-rt", and "kpatch" are only migrated if still in "NEW" or "ASSIGNED". If you cannot log in to RH Jira, please consult article #7032570. That failing, please send an e-mail to the RH Jira admins at rh-issues@redhat.com to troubleshoot your issue as a user management inquiry. The email creates a ServiceNow ticket with Red Hat. Individual Bugzilla bugs that are migrated will be moved to status "CLOSED", resolution "MIGRATED", and set with "MigratedToJIRA" in "Keywords". The link to the successor Jira issue will be found under "Links", have a little "two-footprint" icon next to it, and direct you to the "RHEL project" in Red Hat Jira (issue links are of type "https://issues.redhat.com/browse/RHEL-XXXX", where "X" is a digit). This same link will be available in a blue banner at the top of the page informing you that that bug has been migrated.
Bug 1223989 - SELinux is not allowing PHP-FPM's slowlog timeout capability
Summary: SELinux is not allowing PHP-FPM's slowlog timeout capability
Keywords:
Status: CLOSED NOTABUG
Alias: None
Product: Red Hat Enterprise Linux 6
Classification: Red Hat
Component: selinux-policy
Version: 6.6
Hardware: All
OS: Linux
unspecified
unspecified
Target Milestone: rc
: ---
Assignee: Miroslav Grepl
QA Contact: Milos Malik
URL:
Whiteboard:
Depends On:
Blocks:
TreeView+ depends on / blocked
 
Reported: 2015-05-21 21:48 UTC by Renich Bon Ciric
Modified: 2015-08-28 15:06 UTC (History)
9 users (show)

Fixed In Version:
Doc Type: Bug Fix
Doc Text:
Clone Of:
: 1253259 (view as bug list)
Environment:
Last Closed: 2015-08-28 15:06:47 UTC
Target Upstream Version:
Embargoed:

Attachments (Terms of Use)


Links
System ID Private Priority Status Summary Last Updated
CentOS 8741 0 None None None Never

Description Renich Bon Ciric 2015-05-21 21:48:36 UTC 
Please, review the downstream bug: http://bugs.centos.org/view.php?id=8741

If you enable:

slowlog = /var/log/php-fpm/www-slow.log
request_slowlog_timeout = 5s

On /etc/php-fpm.d/www.conf, SELinux will start complaining:

ausearch -i -sv no -ts recent | grep ptrace
type=SYSCALL msg=audit(05/21/2015 21:37:21.028:14259) : arch=x86_64 syscall=ptrace success=no exit=-1(Operation not permitted) a0=PTRACE_ATTACH a1=0x33ea a2=0x0 a3=0x0 items=0 ppid=1 pid=1385 auid=unset uid=root gid=root euid=root suid=root fsuid=root egid=root sgid=root fsgid=root tty=(none) ses=unset comm=php-fpm exe=/usr/sbin/php-fpm subj=system_u:system_r:httpd_t:s0 key=(null) 
type=AVC msg=audit(05/21/2015 21:37:21.028:14259) : avc: denied { sys_ptrace } for pid=1385 comm=php-fpm capability=sys_ptrace scontext=system_u:system_r:httpd_t:s0 tcontext=system_u:system_r:httpd_t:s0 tclass=capability
Comment 2 Milos Malik 2015-05-22 09:34:12 UTC 
Which version of selinux-policy do you have on your machine?
Comment 3 Renich Bon Ciric 2015-05-22 09:51:57 UTC 
(In reply to Milos Malik from comment #2)
> Which version of selinux-policy do you have on your machine?

# rpm -q selinux-policy
selinux-policy-3.7.19-260.el6_6.3.noarch
Comment 5 Renich Bon Ciric 2015-06-01 20:53:16 UTC 
do you need info from me or dkutalek?
Comment 6 Milos Malik 2015-06-02 07:28:08 UTC 
The latest policy (3.7.19-271.el6) contains a dontaudit rule which prevents the AVC from appearing:

# sesearch -s httpd_t -t httpd_t -c capability -p sys_ptrace --allow -C

# sesearch -s httpd_t -t httpd_t -c capability -p sys_ptrace --dontaudit -C
Found 1 semantic av rules:
DT dontaudit httpd_t httpd_t : capability sys_ptrace ; [ httpd_run_stickshift ]

#

But the rule is active only if the httpd_run_stickshift boolean is enabled.

Unfortunately, I don't see the AVC even if the boolean is disabled. When I start the php-fpm service (configuration from comment#0 was applied before) the AVC does not appear. How long do you keep the php-fpm running until you see any AVCs? Do you run a stress test on php-fpm ?
Comment 7 Renich Bon Ciric 2015-06-03 11:11:08 UTC 
(In reply to Milos Malik from comment #6)
> The latest policy (3.7.19-271.el6) contains a dontaudit rule which prevents
> the AVC from appearing:
> 
> # sesearch -s httpd_t -t httpd_t -c capability -p sys_ptrace --allow -C
> 
> # sesearch -s httpd_t -t httpd_t -c capability -p sys_ptrace --dontaudit -C
> Found 1 semantic av rules:
> DT dontaudit httpd_t httpd_t : capability sys_ptrace ; [
> httpd_run_stickshift ]
> 
> #
> 
> But the rule is active only if the httpd_run_stickshift boolean is enabled.

I will enable the boolean to see if it helps.

> Unfortunately, I don't see the AVC even if the boolean is disabled. When I
> start the php-fpm service (configuration from comment#0 was applied before)
> the AVC does not appear. How long do you keep the php-fpm running until you
> see any AVCs? Do you run a stress test on php-fpm ?

As soon as I get a request, I see the AVC.
Comment 9 Miroslav Grepl 2015-08-28 15:06:47 UTC 
From my point of view, this is not a bug. We have a boolean for this and it won't be allowed by default.
Note You need to log in before you can comment on or make changes to this bug.