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:
We are enabling io_uring in RHEL 9.3 (see bug 2068237).  By default, our selinux policy is preventing io_uring applications from working.  Here is a snippet from the audit log:

type=AVC msg=audit(1681827274.832:197): avc:  denied  { map } for  pid=27074 comm="iopoll-leak.t" path="anon_inode:[io_uring]" dev="anon_inodefs" ino=64058 scontext=unconfined_u:unconfined_r:unconfined_t:s0-s0:c0.c1023 tcontext=unconfined_u:object_r:unconfined_t:s0 tclass=anon_inode permissive=0

How do you recommend we address this?

Version-Release number of selected component (if applicable):
rhel-9.3.0

How reproducible:
100%

Steps to Reproduce:
1. Run an application that makes use of io_uring.  This could be fio, fio's t/io_uring, or the liburing test suite.

Additional info:

Note that io_uring will be disabled by default.  You can find the current proposed code here:
  https://gitlab.com/redhat/centos-stream/src/kernel/centos-stream-9/-/merge_requests/2375#note_1356018369

I would be happy to test any patches or updated packages.

Thanks!

Should be as easy as backporting
34264caf2 Add the map permission to common_anon_inode_perm permission set

unless there were other interfering changes in Fedora in the meantime.

Since the problem described in this bug report should be
resolved in a recent advisory, it has been closed with a
resolution of ERRATA.

For information on the advisory (selinux-policy bug fix and enhancement update), and where to find the updated
files, follow the link below.

If the solution does not work for you, open a new bug report.

https://access.redhat.com/errata/RHBA-2023:6617

The needinfo request[s] on this closed bug have been removed as they have been unresolved for 120 days