Description of problem: Running "machinectl login <machine_name>" on a running nspawn machine fails with the following message: Failed to get machine PTY: Message recipient disconnected from message bus without replying SELinux is preventing dbus-daemon from read, write access on the chr_file /dev/pts/ptmx. ***** Plugin catchall (100. confidence) suggests ************************** If you believe that dbus-daemon should be allowed read write access on the ptmx chr_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 dbus-daemon /var/log/audit/audit.log | audit2allow -M mypol # semodule -i mypol.pp Additional Information: Source Context system_u:system_r:system_dbusd_t:s0-s0:c0.c1023 Target Context system_u:object_r:devpts_t:s0 Target Objects /dev/pts/ptmx [ chr_file ] Source dbus-daemon Source Path dbus-daemon Port <Unknown> Host (removed) Source RPM Packages Target RPM Packages Policy RPM selinux-policy-3.13.1-158.6.fc23.noarch Selinux Enabled True Policy Type targeted Enforcing Mode Enforcing Host Name (removed) Platform Linux (removed) 4.3.5-300.fc23.x86_64 #1 SMP Mon Feb 1 03:18:41 UTC 2016 x86_64 x86_64 Alert Count 1 First Seen 2016-02-22 11:03:45 NZDT Last Seen 2016-02-22 11:03:45 NZDT Local ID 1131986a-d0b4-4408-a3bd-5c3e8957a2f4 Raw Audit Messages type=AVC msg=audit(1456092225.153:660): avc: denied { read write } for pid=874 comm="dbus-daemon" path="/dev/pts/ptmx" dev="devpts" ino=2 scontext=system_u:system_r:system_dbusd_t:s0-s0:c0.c1023 tcontext=system_u:object_r:devpts_t:s0 tclass=chr_file permissive=0 Hash: dbus-daemon,system_dbusd_t,devpts_t,chr_file,read,write Version-Release number of selected component: selinux-policy-3.13.1-158.6.fc23.noarch Additional info: reporter: libreport-2.6.4 hashmarkername: setroubleshoot kernel: 4.3.5-300.fc23.x86_64 type: libreport
Probably still exists as RH #1257990 too.
I guess this is a duplicate of rhbz#1219729, where there is a policy proposal to fix this issues which works for me. However, it still fails to login with the same error when tried with a machine with the --private-users=nnnn parameter, also reveals multiple service issues when booting in the journal.
Created attachment 1161084 [details] machined strace
Created attachment 1161085 [details] machinectl strace
This is still an issue on f23 and f24. [fedora@a sysconfig]$ rpm -q selinux-policy systemd selinux-policy-3.13.1-185.fc24.noarch systemd-229-7.fc24.x86_64 I've attached strace output from machined and machinectl where you can see machined getting kicked off of dbus when writing back to the client. The work around is `setenforce 0`. :-\
This package has changed ownership in the Fedora Package Database. Reassigning to the new owner of this component.
Vincent if you put the machine in permissive mode, does it generate additional AVCs?
Created attachment 1211830 [details] journalctl on machinectl login with SELinux set to Permissive Same or similar issue, SELinux blocking a try to login to a container using "machinectl login <name>": $ sudo machinectl login fedora-mock Failed to get login PTY: Message recipient disconnected from message bus without replying After which machinectl command no longer works with a dbus timeout until restart of systemd-machined.service $ sudo machinectl status fedora-mock Could not get path to machine: Failed to activate service 'org.freedesktop.machine1': timed out (service_start_timeout=25000ms) $ rpm -q selinux-policy selinux-policy-3.13.1-219.fc25.noarch
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Fedora 23 changed to end-of-life (EOL) status on 2016-12-20. Fedora 23 is no longer maintained, which means that it will not receive any further security or bug fix updates. As a result we are closing this bug. If you can reproduce this bug against a currently maintained version of Fedora please feel free to reopen this bug against that version. If you are unable to reopen this bug, please file a new report against the current release. If you experience problems, please add a comment to this bug. Thank you for reporting this bug and we are sorry it could not be fixed.
Can someone reopen, since it doesn't seems fixed? This time I had to set SELinux to Permissive to even start container. AVCs generated as in permissive mode: type=AVC msg=audit(1482261577.255:1270): avc: denied { search } for pid=5454 comm="systemd-machine" name="6218" dev="proc" ino=1056775 scontext=system_u:system_r:systemd_machined_t:s0 tcontext=system_u:system_r:unconfined_service_t:s0 tclass=dir permissive=1 type=AVC msg=audit(1482261577.255:1271): avc: denied { read } for pid=5454 comm="systemd-machine" name="cgroup" dev="proc" ino=1056808 scontext=system_u:system_r:systemd_machined_t:s0 tcontext=system_u:system_r:unconfined_service_t:s0 tclass=file permissive=1 type=AVC msg=audit(1482261577.255:1272): avc: denied { read open } for pid=5454 comm="systemd-machine" path="/proc/6218/cgroup" dev="proc" ino=1056808 scontext=system_u:system_r:systemd_machined_t:s0 tcontext=system_u:system_r:unconfined_service_t:s0 tclass=file permissive=1 type=AVC msg=audit(1482261577.256:1273): avc: denied { getattr } for pid=5454 comm="systemd-machine" path="/proc/6218/cgroup" dev="proc" ino=1056808 scontext=system_u:system_r:systemd_machined_t:s0 tcontext=system_u:system_r:unconfined_service_t:s0 tclass=file permissive=1 type=AVC msg=audit(1482261604.169:1306): avc: denied { read } for pid=5454 comm="systemd-machine" name="mnt" dev="proc" ino=1059096 scontext=system_u:system_r:systemd_machined_t:s0 tcontext=system_u:system_r:unconfined_service_t:s0 tclass=lnk_file permissive=1 type=AVC msg=audit(1482261604.169:1307): avc: denied { sys_ptrace } for pid=5454 comm="systemd-machine" capability=19 scontext=system_u:system_r:systemd_machined_t:s0 tcontext=system_u:system_r:systemd_machined_t:s0 tclass=cap_userns permissive=1 type=AVC msg=audit(1482261604.172:1308): avc: denied { sys_admin } for pid=6394 comm="systemd-machine" capability=21 scontext=system_u:system_r:systemd_machined_t:s0 tcontext=system_u:system_r:systemd_machined_t:s0 tclass=cap_userns permissive=1 type=AVC msg=audit(1482261604.172:1309): avc: denied { sys_chroot } for pid=6394 comm="systemd-machine" capability=18 scontext=system_u:system_r:systemd_machined_t:s0 tcontext=system_u:system_r:systemd_machined_t:s0 tclass=cap_userns permissive=1 type=AVC msg=audit(1482261604.172:1310): avc: denied { setgid } for pid=6394 comm="systemd-machine" capability=6 scontext=system_u:system_r:systemd_machined_t:s0 tcontext=system_u:system_r:systemd_machined_t:s0 tclass=cap_userns permissive=1 type=AVC msg=audit(1482261604.172:1311): avc: denied { setuid } for pid=6394 comm="systemd-machine" capability=7 scontext=system_u:system_r:systemd_machined_t:s0 tcontext=system_u:system_r:systemd_machined_t:s0 tclass=cap_userns permissive=1 type=AVC msg=audit(1482261604.172:1312): avc: denied { read } for pid=6394 comm="systemd-machine" name="ptmx" dev="tmpfs" ino=1055706 scontext=system_u:system_r:systemd_machined_t:s0 tcontext=system_u:object_r:tmpfs_t:s0 tclass=lnk_file permissive=1 type=AVC msg=audit(1482261604.172:1313): avc: denied { open } for pid=6394 comm="systemd-machine" path="/dev/pts/ptmx" dev="devpts" ino=2 scontext=system_u:system_r:systemd_machined_t:s0 tcontext=system_u:object_r:devpts_t:s0 tclass=chr_file permissive=1 type=AVC msg=audit(1482261604.173:1314): avc: denied { sys_ptrace } for pid=5454 comm="systemd-machine" capability=19 scontext=system_u:system_r:systemd_machined_t:s0 tcontext=system_u:system_r:systemd_machined_t:s0 tclass=cap_userns permissive=1 type=AVC msg=audit(1482261604.175:1315): avc: denied { write } for pid=6402 comm="systemd-machine" name="system_bus_socket" dev="tmpfs" ino=1057542 scontext=system_u:system_r:systemd_machined_t:s0 tcontext=system_u:object_r:tmpfs_t:s0 tclass=sock_file permissive=1 type=AVC msg=audit(1482261604.217:1316): avc: denied { read write } for pid=1052 comm="dbus-daemon" path="/dev/pts/ptmx" dev="devpts" ino=2 scontext=system_u:system_r:system_dbusd_t:s0-s0:c0.c1023 tcontext=system_u:object_r:devpts_t:s0 tclass=chr_file permissive=1