Bug 1380930

Description of problem:
After i install nginx, php-fpm and try to start it

Version-Release number of selected component:
selinux-policy-3.13.1-225.1.fc25.noarch

Additional info:
reporter:       libreport-2.8.0
hashmarkername: setroubleshoot
kernel:         4.8.12-300.fc25.x86_64
type:           libreport

Description of problem:
My understanding is that PHP-FPM uses execmem for the regex JIT.

Version-Release number of selected component:
selinux-policy-3.13.1-225.11.fc25.noarch

Additional info:
reporter:       libreport-2.8.0
hashmarkername: setroubleshoot
kernel:         4.9.14-200.fc25.x86_64
type:           libreport

Running this command seems to work around the issue without any dirty audit2allow:

setsebool -P httpd_execmem 1

However, execmem appears to be standard functionality in the shipping PHP 7 configuration. Fedora ought to do one of the following:

(1) Allow execmem for PHP-FPM under label httpd.
(2) Configure PHP-FPM to not use the regex JIT. Ideally, comment next to the disabled option to instruct administrators to update their selinux bools if they want to use it.

Actually, I'm still seeing selinux errors after the setsebool. After running setsebool, I see this:

SELinux is preventing php-fpm from execute access on the file
2F616E6F6E5F6875676570616765202864656C6574656429.

*****  Plugin catchall (100. confidence)
suggests   **************************

If you believe that php-fpm should be allowed execute access on the
2F616E6F6E5F6875676570616765202864656C6574656429 file by default.
Then you should report this as a bug.
You can generate a local policy module to allow this access.
Do
allow this access for now by executing:
# ausearch -c 'php-fpm' --raw | audit2allow -M my-phpfpm
# semodule -X 300 -i my-phpfpm.pp

Additional Information:
Source Context                system_u:system_r:httpd_t:s0
Target Context                system_u:object_r:hugetlbfs_t:s0
Target
Objects                2F616E6F6E5F6875676570616765202864656C6574656429
[
                              file ]
Source                        php-fpm
Source Path                   php-fpm
Port                          <Unknown>
Host                          t560.davidstrauss.net
Source RPM Packages           
Target RPM Packages           
Policy RPM                    selinux-policy-3.13.1-225.11.fc25.noarch
Selinux Enabled               True
Policy Type                   targeted
Enforcing Mode                Enforcing
Host Name                     t560.davidstrauss.net
Platform                      Linux t560.davidstrauss.net 4.9.14-
200.fc25.x86_64
                              #1 SMP Mon Mar 13 19:26:40 UTC 2017
x86_64 x86_64
Alert Count                   1
First Seen                    2017-03-21 12:27:21 PDT
Last Seen                     2017-03-21 12:27:21 PDT
Local ID                      26256816-45b7-4aa3-b991-75d0fe3eedbb

Raw Audit Messages
type=AVC msg=audit(1490124441.38:313): avc:  denied  { execute }
for  pid=9841 comm="php-fpm"
path=2F616E6F6E5F6875676570616765202864656C6574656429 dev="hugetlbfs"
ino=173219 scontext=system_u:system_r:httpd_t:s0
tcontext=system_u:object_r:hugetlbfs_t:s0 tclass=file permissive=0


Hash: php-fpm,httpd_t,hugetlbfs_t,file,execute

It also looks like the PCRE JIT is disabled by default in /etc/php.d/php.ini:

pcre.jit=0

So, I'm at a loss for why this is occurring.

This is still occurring for me on Fedora 26 with PHP 7.1.

#============= httpd_t ==============

#!!!! This avc is allowed in the current policy
allow httpd_t hugetlbfs_t:file execute;


» rpm -q selinux-policy 
selinux-policy-3.13.1-260.15.fc26.noarch

Denial related to hugetlbfs_t is fixed in current version of selinux-policy and for execmem you need to use boolean: 

setsebool -P httpd_execmem 1

Closing.

> Denial related to hugetlbfs_t is fixed in current version of selinux-policy and for execmem you need to use boolean: 
>
> setsebool -P httpd_execmem 1

Tried that already. It just results in getting a bit further before getting the error in #4.

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