Bug 734237 - cron that comes with mdadm can't run unconfined
Summary: cron that comes with mdadm can't run unconfined
Alias: None
Product: Fedora
Classification: Fedora
Component: selinux-policy
Version: 15
Hardware: Unspecified
OS: Unspecified
Target Milestone: ---
Assignee: Miroslav Grepl
QA Contact: Fedora Extras Quality Assurance
Depends On:
TreeView+ depends on / blocked
Reported: 2011-08-29 20:09 UTC by Robin Powell
Modified: 2011-10-06 00:03 UTC (History)
3 users (show)

Fixed In Version: selinux-policy-3.9.16-39.fc15
Doc Type: Bug Fix
Doc Text:
Clone Of:
Last Closed: 2011-10-06 00:03:17 UTC
Type: ---

Attachments (Terms of Use)

Description Robin Powell 2011-08-29 20:09:28 UTC
I don't have a suggested solution for this one, sorry.

/etc/cron.d/raid-check is installed by mdadm, and runs /usr/sbin/raid-check , which doesn't actually work because this line:

    echo "${check[$dev]}" > /sys/block/$dev/md/sync_action

errors out like so:

    /usr/sbin/raid-check: line 73: echo: write error: Permission denied

The first time, the AVC looked like this:

type=AVC msg=audit(1314594121.384:52772): avc:  denied  { write } for  pid=21290 comm="sh" name="sync_action" dev=sysfs ino=16676 sc
ontext=system_u:system_r:system_cronjob_t:s0-s0:c0.c1023 tcontext=system_u:object_r:sysfs_t:s0 tclass=file

but fixing that made it do this:

type=AVC msg=audit(1314644521.916:66507): avc:  denied  { sys_admin } for  pid=10248 comm="sh" capability=21  scontext=system_u:syst
em_r:system_cronjob_t:s0-s0:c0.c1023 tcontext=system_u:system_r:system_cronjob_t:s0-s0:c0.c1023 tclass=capability
type=SYSCALL msg=audit(1314644521.916:66507): arch=c000003e syscall=1 success=no exit=-13 a0=1 a1=7f4b29b1f000 a2=6 a3=fffffffffffff
ff0 items=0 ppid=10245 pid=10248 auid=0 uid=0 gid=0 euid=0 suid=0 fsuid=0 egid=0 sgid=0 fsgid=0 tty=(none) ses=203 comm="sh" exe="/b
in/bash" subj=system_u:system_r:system_cronjob_t:s0-s0:c0.c1023 key=(null)

which I don't really know how to deal with.

Weirdly, when I run it with "setenforce 0", all I get back is:

type=AVC msg=audit(1314645901.549:68205): avc:  denied  { write } for  pid=12139 comm="sh" name="sync_action" dev=sysfs ino=17060 scontext=system_u:system_r:system_cronjob_t:s0-s0:c0.c1023 tcontext=system_u:object_r:sysfs_t:s0 tclass=file
type=AVC msg=audit(1314645907.607:68218): avc:  denied  { setsched } for  pid=12179 comm="renice" scontext=system_u:system_r:system_cronjob_t:s0-s0:c0.c1023 tcontext=system_u:system_r:kernel_t:s0 tclass=process

So, not really sure what to do here, thought I'd pass it on for the clueful people to look at.


Comment 1 Daniel Walsh 2011-08-30 01:07:40 UTC
Did you disable the unconfined.pp module?

Miroslav we probably should label raid-check as mdadm_exec_t and allow cron to transition to this domain.

Fixed in 

Comment 2 Robin Powell 2011-08-30 03:50:20 UTC
(In reply to comment #1)
> Did you disable the unconfined.pp module?

Erm, yes, I meant "can't run without unconfined".

You can safely assume that all bugs I enter are with unconfined.pp disabled (in fact, removed entirely) because I have puppet enforcing that state every 15 minutes.  :)

rlpowell@basti> sudo sh -c "semodule -l | grep -i unc"   
unconfineduser  1.0.0

I'm trying to help.  :)


Comment 3 Daniel Walsh 2011-08-30 17:12:37 UTC
Great.  You probably should just disable it since if you remove it a policy update will add it back, where as if it is disabled, it will stay disabled.

Comment 4 Robin Powell 2011-08-30 19:07:19 UTC
Probably, but puppet seems to remove by default, and I haven't cared enough to hunt that down inside puppet and fix it.


Comment 5 Fedora Update System 2011-09-08 08:12:48 UTC
selinux-policy-3.9.16-39.fc15 has been submitted as an update for Fedora 15.

Comment 6 Fedora Update System 2011-09-09 05:28:55 UTC
Package selinux-policy-3.9.16-39.fc15:
* should fix your issue,
* was pushed to the Fedora 15 testing repository,
* should be available at your local mirror within two days.
Update it with:
# su -c 'yum update --enablerepo=updates-testing selinux-policy-3.9.16-39.fc15'
as soon as you are able to.
Please go to the following url:
then log in and leave karma (feedback).

Comment 7 Fedora Update System 2011-10-06 00:03:17 UTC
selinux-policy-3.9.16-39.fc15 has been pushed to the Fedora 15 stable repository.  If problems still persist, please make note of it in this bug report.

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