On Tue, 2010-03-02 at 19:19 -0600, Serge E. Hallyn wrote: > Quoting Serge E. Hallyn (serue@xxxxxxxxxx): > > Quoting Nathan Lynch (ntl@xxxxxxxxx): > > > Hi, > > > > > > With ckpt-v19-rc3 the test-mq.sh testcase in cr_tests fails when SELinux > > > is enabled on my test system (64-bit powerpc kernel). The testcase > > > sleeps in do_msgrcv after restart and never wakes up. When SELinux is > > > disabled, the messages are received and the testcase passes. > > > > > > I've established that the messages are being restored during restart -- > > > msgctl(IPC_STAT) shows one message in each queue before calling msgrcv. > > > Adding the IPC_NOWAIT flag to the msgrcv calls gets ENOMSG, however. > > > > > > I managed to narrow this down to security_msg_queue_msgrcv -> > > > selinux_msg_queue_msgrcv. avc_has_perm(SECCLASS_MSG, MSG__RECEIVE) gets > > > -EACCESS, so I guess something is going awry in selinux restore hooks? > > > > > > Any ideas? > > > > Hmm, wait. security_msg_msg_alloc() is being called after > > security_msg_msg_restore. That may not be what is causing > > your troubles, but it's certainly not right. > > Can you try the following patch? > > Also, to actually restore the LSM labels you need to add -k to your > restart flags, but without the -k you should get a sane default > security label. Thanks, the ipc/mq tests pass with this patch and restart -k. Without -k the tests still fail in the same manner (msgrcv fails). Is that the behavior you'd expect? _______________________________________________ Containers mailing list Containers@xxxxxxxxxxxxxxxxxxxxxxxxxx https://lists.linux-foundation.org/mailman/listinfo/containers
