The following was filed automatically by setroubleshoot: Summary: SELinux is preventing udevd (udev_t) "signal" unconfined_t. Detailed Description: [SELinux is in permissive mode, the operation would have been denied but was permitted due to permissive mode.] SELinux denied access requested by udevd. It is not expected that this access is required by udevd and this access may signal an intrusion attempt. It is also possible that the specific version or configuration of the application is causing it to require additional access. Allowing Access: You can generate a local policy module to allow this access - see FAQ (http://fedora.redhat.com/docs/selinux-faq-fc5/#id2961385) Please file a bug report (http://bugzilla.redhat.com/bugzilla/enter_bug.cgi) against this package. Additional Information: Source Context system_u:system_r:udev_t:s0-s0:c0.c1023 Target Context unconfined_u:unconfined_r:unconfined_t:s0-s0:c0.c1 023 Target Objects None [ process ] Source udevd Source Path /sbin/udevd Port <Unknown> Host (removed) Source RPM Packages udev-145-4.fc12 Target RPM Packages Policy RPM selinux-policy-3.6.26-8.fc12 Selinux Enabled True Policy Type targeted MLS Enabled True Enforcing Mode Permissive Plugin Name catchall Host Name (removed) Platform Linux (removed) 2.6.31-0.125.rc5.git2.fc12.i686 #1 SMP Tue Aug 4 03:18:57 EDT 2009 i686 i686 Alert Count 1 First Seen Wed 12 Aug 2009 07:23:20 AM EDT Last Seen Wed 12 Aug 2009 07:23:20 AM EDT Local ID d6365004-67ab-45eb-acad-ca3e701abc6f Line Numbers Raw Audit Messages node=(removed) type=AVC msg=audit(1250076200.943:27940): avc: denied { signal } for pid=393 comm="udevd" scontext=system_u:system_r:udev_t:s0-s0:c0.c1023 tcontext=unconfined_u:unconfined_r:unconfined_t:s0-s0:c0.c1023 tclass=process node=(removed) type=SYSCALL msg=audit(1250076200.943:27940): arch=40000003 syscall=37 success=yes exit=0 a0=858 a1=a a2=8d27018 a3=8d386c8 items=0 ppid=1 pid=393 auid=4294967295 uid=0 gid=0 euid=0 suid=0 fsuid=0 egid=0 sgid=0 fsgid=0 tty=(none) ses=4294967295 comm="udevd" exe="/sbin/udevd" subj=system_u:system_r:udev_t:s0-s0:c0.c1023 key=(null) audit2allow suggests: #============= udev_t ============== allow udev_t unconfined_t:process signal;
Is udev sending a signal to all logged in users?
huh? no. not that I know of... it should only communicate with its helper childs. kill(worker->pid, SIGKILL); But a check is missing against <= 0 for worker->pid which could be a problem.
questions: was the signal sent by udev or received? what was the signum? what was the target?
*** Bug 516463 has been marked as a duplicate of this bug. ***
Signal went from udev_t to unconfined_t. Antonio I marked another bug closed as dup of this one, were you running liveinst when this happened? The signal being send is a1="a" a=10==SIGUSR1
ah, this is the communication from "udevd" to "udevadm settle" very important!
Just Rawhide or do we need this in F11? Fixed in selinux-policy-3.6.26-11.fc12.noarch
This signal was added in udev version 140.
Miroslav add optional_policy(` unconfined_signal(udev_t) ') Just in case.
ok, I am adding
--- Comment #5 from Daniel Walsh <dwalsh> 2009-08-13 10:52:02 EDT --- Signal went from udev_t to unconfined_t. Antonio I marked another bug closed as dup of this one, were you running liveinst when this happened? The signal being send is a1="a" a=10==SIGUSR1 ============================================ Yes, I was running Liveinstall from xfce-20080810 live spin by Adam Miller. I am encountering one big time denial for wine too, but I can't copy paste the denied avc's :(
Can you send me the /var/log/audit/audit.log? If you turn on the mmap_low_allowed boolean it will probably go away. setsebool -P mmap_low_allowed=1