Package: selinux-policy-default
Version: 2:2.20110726-12
Severity: normal
Hi,
on boot, I see this AVC :
May 5 14:28:40 venser kernel: [ 379.071332] type=1400
audit(1367756920.294:11): avc: denied { read } for pid=515
comm="systemd-logind" name="cpu" dev=tmpfs ino=3309
scontext=system_u:system_r:systemd_logind_t:s0
tcontext=system_u:object_r:cgroup_t:s0 tclass=lnk_file
It seems that systemd try to access to all cgroups in /sys/fs/cgroup/ but there
is now a symlink for cpu :
# ls -lZ /sys/fs/cgroup/
total 0
drwxr-xr-x. 2 root root system_u:object_r:cgroup_t:SystemLow 0 mai 5 14:22
blkio
lrwxrwxrwx. 1 root root system_u:object_r:cgroup_t:SystemLow 11 mai 5 14:22
cpu -> cpu,cpuacct
lrwxrwxrwx. 1 root root system_u:object_r:cgroup_t:SystemLow 11 mai 5 14:22
cpuacct -> cpu,cpuacct
drwxr-xr-x. 3 root root system_u:object_r:cgroup_t:SystemLow 0 mai 5 14:22
cpu,cpuacct
drwxr-xr-x. 2 root root system_u:object_r:cgroup_t:SystemLow 0 mai 5 14:22
cpuset
drwxr-xr-x. 2 root root system_u:object_r:cgroup_t:SystemLow 0 mai 5 14:22
devices
drwxr-xr-x. 2 root root system_u:object_r:cgroup_t:SystemLow 0 mai 5 14:22
freezer
drwxr-xr-x. 2 root root system_u:object_r:cgroup_t:SystemLow 0 mai 5 14:22
net_cls
drwxr-xr-x. 2 root root system_u:object_r:cgroup_t:SystemLow 0 mai 5 14:22
perf_event
drwxr-xr-x. 4 root root system_u:object_r:cgroup_t:SystemLow 0 mai 5 14:22
systemd
So the policy should be extended to also take in account the symlinks :
# sesearch -s systemd_logind_t -A -t cgroup_t
Found 2 semantic av rules:
allow systemd_logind_t cgroup_t : file { ioctl read write create getattr
setattr lock append unlink link rename open } ;
allow systemd_logind_t cgroup_t : dir { ioctl read write create getattr
setattr lock unlink link rename add_name remove_name reparent search rmdir open
} ;
-- System Information:
Debian Release: 7.0
APT prefers stable
APT policy: (500, 'stable')
Architecture: amd64 (x86_64)
Kernel: Linux 3.2.0-4-amd64 (SMP w/1 CPU core)
Locale: LANG=fr_FR.UTF-8, LC_CTYPE=fr_FR.UTF-8 (charmap=ANSI_X3.4-1968)
(ignored: LC_ALL set to C)
Shell: /bin/sh linked to /bin/dash
Versions of packages selinux-policy-default depends on:
ii libpam-modules 1.1.3-7.1
ii libselinux1 2.1.9-5
ii libsepol1 2.1.4-3
ii policycoreutils 2.1.10-9
ii python 2.7.3-4
Versions of packages selinux-policy-default recommends:
ii checkpolicy 2.1.8-2
ii setools 3.3.7-3
Versions of packages selinux-policy-default suggests:
pn logcheck <none>
pn syslog-summary <none>
-- Configuration Files:
/etc/selinux/default/modules/active/file_contexts.local [Errno 13] Permission
denied: u'/etc/selinux/default/modules/active/file_contexts.local'
-- no debconf information
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