On Wed, 2009-09-16 at 15:02 +0200, Ingo Molnar wrote: > i'm still getting crashes even with latest -git [0cb583f]: > > > EXT3-fs: mounted filesystem with ordered data mode. > VFS: Mounted root (ext3 filesystem) readonly on device 8:6. > async_waiting @ 1 > async_continuing @ 1 after 0 usec > debug: unmapping init memory ffffffff81f1e000..ffffffff81fb1000 > SELinux: Disabled at runtime. > BUG: unable to handle kernel NULL pointer dereference at (null) > IP: [<ffffffff81122537>] kmem_cache_alloc+0x9a/0x185 sds, I'm not quite sure how to fix this, maybe you have some ideas? One problem is that avc_disable() (which frees everything in the AVC and then kmem_cache_destroy() the avc_node_cachep) is done before we do the security_ops = secondary_ops call. So other tasks could still call selinux_ functions after the avc_node_cachep is free. Fixing that ordering would likely take care of most of the problems but it's not complete. We have no idea if anything is already passed the security_ops->function() call and is just waiting to explode as soon as the avc_node_cachep is freed. Any ideas how we can be sure that everything is out of selinux code so we can finish the free safely? -Eric -- This message was distributed to subscribers of the selinux mailing list. If you no longer wish to subscribe, send mail to majordomo@xxxxxxxxxxxxx with the words "unsubscribe selinux" without quotes as the message.
