Well, I dunno if this is a bug with fedora or selinux, but my FC13 system crashed earlier today with: Aug 18 13:01:56 argo kernel: SELinux: Invalid class 0 Aug 18 13:11:23 argo kernel: BUG: unable to handle kernel NULL pointer dereference at 0000000000000008 Aug 18 13:11:23 argo kernel: IP: [<ffffffff811c73b6>] selinux_inode_free_security+0x3f/0x77 Aug 18 13:11:23 argo kernel: PGD 139db9067 PUD 12dde6067 PMD 0 Aug 18 13:11:23 argo kernel: Oops: 0002 [#1] SMP Aug 18 13:11:23 argo kernel: last sysfs file: /sys/devices/pci0000:00/0000:00:1c.0/0000:0b:00.0/local_cpus Aug 18 13:11:23 argo kernel: CPU 2 Aug 18 13:11:23 argo kernel: Pid: 50, comm: kswapd0 Tainted: P 2.6.33.6-147.fc13.x86_64 #1 0GU083/Precision WorkStation 490 Aug 18 13:11:23 argo kernel: RIP: 0010:[<ffffffff811c73b6>] [<ffffffff811c73b6>] selinux_inode_free_security+0x3f/0x77 Aug 18 13:11:23 argo kernel: RSP: 0018:ffff88013a0e7bf0 EFLAGS: 00010213 Aug 18 13:11:23 argo kernel: RAX: ffff880126f15008 RBX: ffff880126f15000 RCX: 0000000000000000 Aug 18 13:11:23 argo kernel: RDX: 0000000000000000 RSI: ffff880005890500 RDI: ffff880137156860 Aug 18 13:11:23 argo kernel: RBP: ffff88013a0e7c10 R08: ffff880011d2e980 R09: 0000000000000005 Aug 18 13:11:23 argo kernel: R10: ffff880011d2e860 R11: ffff880011d2e650 R12: ffff880011d2e970 Aug 18 13:11:23 argo kernel: R13: ffff880137156800 R14: ffff88013a0e7cb0 R15: 0000000000000080 Aug 18 13:11:23 argo kernel: FS: 0000000000000000(0000) GS:ffff880005880000(0000) knlGS:0000000000000000 Aug 18 13:11:23 argo kernel: CS: 0010 DS: 0000 ES: 0000 CR0: 000000008005003b Aug 18 13:11:23 argo kernel: CR2: 0000000000000008 CR3: 000000012ddfd000 CR4: 00000000000006e0 Aug 18 13:11:23 argo kernel: DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 Aug 18 13:11:23 argo kernel: DR3: 0000000000000000 DR6: 00000000ffff0ff0 DR7: 0000000000000400 Aug 18 13:11:23 argo kernel: Process kswapd0 (pid: 50, threadinfo ffff88013a0e6000, task ffff88013b0f2ea0) Aug 18 13:11:23 argo kernel: Stack: Aug 18 13:11:23 argo kernel: ffff88013a0e7c10 ffff880011d2e970 ffff880011d2e980 000000000000007d Aug 18 13:11:23 argo kernel: <0> ffff88013a0e7c30 ffffffff811be70b 0000000000000000 ffff880011d2e970 Aug 18 13:11:23 argo kernel: <0> ffff88013a0e7c50 ffffffff811130d4 ffff880011d2eb80 ffff880011d2e970 Aug 18 13:11:23 argo kernel: Call Trace: Aug 18 13:11:23 argo kernel: [<ffffffff811be70b>] security_inode_free+0x21/0x25 Aug 18 13:11:23 argo kernel: [<ffffffff811130d4>] __destroy_inode+0x21/0x78 Aug 18 13:11:23 argo kernel: [<ffffffff8111313c>] destroy_inode+0x11/0x40 Aug 18 13:11:23 argo kernel: [<ffffffff811135d4>] dispose_list+0xbe/0xed Aug 18 13:11:23 argo kernel: [<ffffffff811137d1>] shrink_icache_memory+0x1ce/0x1fe Aug 18 13:11:23 argo kernel: [<ffffffff810cb017>] shrink_slab+0xd3/0x157 Aug 18 13:11:23 argo kernel: [<ffffffff810cd0db>] balance_pgdat+0x3af/0x5e3 Aug 18 13:11:23 argo kernel: [<ffffffff810ca7ae>] ? isolate_pages_global+0x0/0x1f2 Aug 18 13:11:23 argo kernel: [<ffffffff810cd550>] kswapd+0x241/0x26d Aug 18 13:11:23 argo kernel: [<ffffffff810641bf>] ? autoremove_wake_function+0x0/0x34 Aug 18 13:11:23 argo kernel: [<ffffffff810cd30f>] ? kswapd+0x0/0x26d Aug 18 13:11:23 argo kernel: [<ffffffff81063d6f>] kthread+0x7a/0x82 Aug 18 13:11:23 argo kernel: [<ffffffff8100a924>] kernel_thread_helper+0x4/0x10 Aug 18 13:11:23 argo kernel: [<ffffffff81063cf5>] ? kthread+0x0/0x82 Aug 18 13:11:23 argo kernel: [<ffffffff8100a920>] ? kernel_thread_helper+0x0/0x10 Aug 18 13:11:23 argo kernel: Code: 01 00 00 48 8b 9f 28 02 00 00 4c 8b a8 c0 00 00 00 49 8d 7d 60 e8 ec 2c 26 00 48 8b 53 08 48 8d 43 08 48 39 c2 74 13 48 8b 4b 10 <48> 89 4a 08 48 89 11 48 89 43 08 48 89 43 10 66 41 ff 45 60 49 Aug 18 13:11:23 argo kernel: RIP [<ffffffff811c73b6>] selinux_inode_free_security+0x3f/0x77 Aug 18 13:11:23 argo kernel: RSP <ffff88013a0e7bf0> Aug 18 13:11:23 argo kernel: CR2: 0000000000000008 Aug 18 13:11:23 argo kernel: ---[ end trace 4543cd894c4be801 ]--- mark, very unhappy with FC13.... -- selinux mailing list selinux@xxxxxxxxxxxxxxxxxxxxxxx https://admin.fedoraproject.org/mailman/listinfo/selinux