Note: This bug is displayed in read-only format because
the product is no longer active in Red Hat Bugzilla.
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.
Description of problem:
SELinux is preventing /usr/sbin/mdadm from 'ioctl' accesses on the blk_file /dev/dm-3.
***** Plugin catchall (100. confidence) suggests **************************
If you believe that mdadm should be allowed ioctl access on the dm-3 blk_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:
# grep mdadm /var/log/audit/audit.log | audit2allow -M mypol
# semodule -i mypol.pp
Additional Information:
Source Context system_u:system_r:mdadm_t:s0-s0:c0.c1023
Target Context system_u:object_r:svirt_image_t:s0:c662,c888
Target Objects /dev/dm-3 [ blk_file ]
Source mdadm
Source Path /usr/sbin/mdadm
Port <Unknown>
Host (removed)
Source RPM Packages mdadm-3.2.6-21.el7.x86_64
Target RPM Packages
Policy RPM selinux-policy-3.12.1-80.el7.noarch
Selinux Enabled True
Policy Type targeted
Enforcing Mode Permissive
Host Name (removed)
Platform Linux (removed) 3.10.0-26.el7.x86_64 #1 SMP Thu
Sep 19 17:15:18 EDT 2013 x86_64 x86_64
Alert Count 1
First Seen 2013-09-24 03:11:07 CEST
Last Seen 2013-09-24 03:11:07 CEST
Local ID c56a4839-1e06-4647-8e5d-a11074dca54f
Raw Audit Messages
type=AVC msg=audit(1379985067.797:3239): avc: denied { ioctl } for pid=8764 comm="mdadm" path="/dev/dm-3" dev="devtmpfs" ino=17943 scontext=system_u:system_r:mdadm_t:s0-s0:c0.c1023 tcontext=system_u:object_r:svirt_image_t:s0:c662,c888 tclass=blk_file
type=SYSCALL msg=audit(1379985067.797:3239): arch=x86_64 syscall=ioctl success=no exit=ENOTTY a0=3 a1=800c0910 a2=7fff8d27d750 a3=0 items=0 ppid=8763 pid=8764 auid=0 uid=0 gid=0 euid=0 suid=0 fsuid=0 egid=0 sgid=0 fsgid=0 tty=(none) ses=224 comm=mdadm exe=/usr/sbin/mdadm subj=system_u:system_r:mdadm_t:s0-s0:c0.c1023 key=(null)
Hash: mdadm,mdadm_t,svirt_image_t,blk_file,ioctl
Additional info:
reporter: libreport-2.1.7
hashmarkername: setroubleshoot
kernel: 3.10.0-26.el7.x86_64
type: libreport
(In reply to Milos Malik from comment #2)
> /dev/dm-3 has an incorrect label. It should be labeled fixed_disk_device_t.
and whoe fault it is? I am quite certain I have never changed knowingly its label and even restorecon agrees:
matej@wycliff: ~$ sudo -i
[sudo] password for matej:
wycliff:~# restorecon -v -R /dev/
restorecon: Warning no default label for /dev/mqueue
restorecon: Warning no default label for /dev/hugepages/libvirt
restorecon: Warning no default label for /dev/hugepages/libvirt/qemu
restorecon: Warning no default label for /dev/pts/6
restorecon: Warning no default label for /dev/pts/5
restorecon: Warning no default label for /dev/pts/3
restorecon: Warning no default label for /dev/pts/1
restorecon: Warning no default label for /dev/pts/4
restorecon: Warning no default label for /dev/pts/0
restorecon: Warning no default label for /dev/pts/ptmx
restorecon: Warning no default label for /dev/shm/spice.2165
wycliff:~#
svirt_image_t is a customizable type. restorecon does not change it unless you run it with -F parameter. I don't know why is /dev/dm-3 labeled svirt_image_t. Is the device used as a disk for some virtual machine?
This request was resolved in Red Hat Enterprise Linux 7.0.
Contact your manager or support representative in case you have further questions about the request.
Description of problem: SELinux is preventing /usr/sbin/mdadm from 'ioctl' accesses on the blk_file /dev/dm-3. ***** Plugin catchall (100. confidence) suggests ************************** If you believe that mdadm should be allowed ioctl access on the dm-3 blk_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: # grep mdadm /var/log/audit/audit.log | audit2allow -M mypol # semodule -i mypol.pp Additional Information: Source Context system_u:system_r:mdadm_t:s0-s0:c0.c1023 Target Context system_u:object_r:svirt_image_t:s0:c662,c888 Target Objects /dev/dm-3 [ blk_file ] Source mdadm Source Path /usr/sbin/mdadm Port <Unknown> Host (removed) Source RPM Packages mdadm-3.2.6-21.el7.x86_64 Target RPM Packages Policy RPM selinux-policy-3.12.1-80.el7.noarch Selinux Enabled True Policy Type targeted Enforcing Mode Permissive Host Name (removed) Platform Linux (removed) 3.10.0-26.el7.x86_64 #1 SMP Thu Sep 19 17:15:18 EDT 2013 x86_64 x86_64 Alert Count 1 First Seen 2013-09-24 03:11:07 CEST Last Seen 2013-09-24 03:11:07 CEST Local ID c56a4839-1e06-4647-8e5d-a11074dca54f Raw Audit Messages type=AVC msg=audit(1379985067.797:3239): avc: denied { ioctl } for pid=8764 comm="mdadm" path="/dev/dm-3" dev="devtmpfs" ino=17943 scontext=system_u:system_r:mdadm_t:s0-s0:c0.c1023 tcontext=system_u:object_r:svirt_image_t:s0:c662,c888 tclass=blk_file type=SYSCALL msg=audit(1379985067.797:3239): arch=x86_64 syscall=ioctl success=no exit=ENOTTY a0=3 a1=800c0910 a2=7fff8d27d750 a3=0 items=0 ppid=8763 pid=8764 auid=0 uid=0 gid=0 euid=0 suid=0 fsuid=0 egid=0 sgid=0 fsgid=0 tty=(none) ses=224 comm=mdadm exe=/usr/sbin/mdadm subj=system_u:system_r:mdadm_t:s0-s0:c0.c1023 key=(null) Hash: mdadm,mdadm_t,svirt_image_t,blk_file,ioctl Additional info: reporter: libreport-2.1.7 hashmarkername: setroubleshoot kernel: 3.10.0-26.el7.x86_64 type: libreport