Over the last month I had 19 kernel crashes, all with the above message. Happens randomly. Running straight OS,no VM environment. <br />
ASUS P6T motherboard, Intel Core i7-920 (<a href="http://ark.intel.com/products/37147">http://ark.intel.com/products/37147</a> [<a href="http://ark.intel.com/products/37147" target="_blank">^</a>]), 32GiB RAM. <br />
All 19 pairs of vmcore/vmcore-dmesg.txt files are available. Let me know which one you want to see first if any.<br />
<br />
In brief:<br />
<br />
[crash]$ pwd<br />
/var/crash<br />
<br />
[crash]$ grep "unable to handle kernel NULL pointer dereference at" */*txt<br />
127.0.0.1-2013-05-19-12:04:05/vmcore-dmesg.txt:<1>BUG: unable to handle kernel NULL pointer dereference at (null)<br />
127.0.0.1-2013-05-20-07:38:22/vmcore-dmesg.txt:<1>BUG: unable to handle kernel NULL pointer dereference at 0000000000000218<br />
127.0.0.1-2013-05-20-07:53:54/vmcore-dmesg.txt:<1>BUG: unable to handle kernel NULL pointer dereference at 0000000000000218<br />
127.0.0.1-2013-05-20-08:37:11/vmcore-dmesg.txt:<1>BUG: unable to handle kernel NULL pointer dereference at 0000000000000218<br />
127.0.0.1-2013-05-20-08:53:14/vmcore-dmesg.txt:<1>BUG: unable to handle kernel NULL pointer dereference at 0000000000000218<br />
127.0.0.1-2013-05-20-09:03:09/vmcore-dmesg.txt:<1>BUG: unable to handle kernel NULL pointer dereference at 0000000000000218<br />
127.0.0.1-2013-05-20-09:07:26/vmcore-dmesg.txt:<1>BUG: unable to handle kernel NULL pointer dereference at 0000000000000218<br />
127.0.0.1-2013-05-20-09:11:22/vmcore-dmesg.txt:<1>BUG: unable to handle kernel NULL pointer dereference at 0000000000000218<br />
127.0.0.1-2013-05-20-09:34:59/vmcore-dmesg.txt:<1>BUG: unable to handle kernel NULL pointer dereference at 0000000000000218<br />
127.0.0.1-2013-05-20-09:44:02/vmcore-dmesg.txt:<1>BUG: unable to handle kernel NULL pointer dereference at 0000000000000218<br />
127.0.0.1-2013-05-20-10:24:19/vmcore-dmesg.txt:<1>BUG: unable to handle kernel NULL pointer dereference at 0000000000000218<br />
127.0.0.1-2013-05-20-10:27:35/vmcore-dmesg.txt:<1>BUG: unable to handle kernel NULL pointer dereference at 0000000000000218<br />
127.0.0.1-2013-05-20-10:32:38/vmcore-dmesg.txt:<1>BUG: unable to handle kernel NULL pointer dereference at 0000000000000218<br />
127.0.0.1-2013-05-20-10:41:34/vmcore-dmesg.txt:<1>BUG: unable to handle kernel NULL pointer dereference at 0000000000000218<br />
127.0.0.1-2013-05-20-10:51:51/vmcore-dmesg.txt:<1>BUG: unable to handle kernel NULL pointer dereference at 0000000000000218<br />
127.0.0.1-2013-05-20-10:54:18/vmcore-dmesg.txt:<1>BUG: unable to handle kernel NULL pointer dereference at (null)<br />
127.0.0.1-2013-05-20-12:02:22/vmcore-dmesg.txt:<1>BUG: unable to handle kernel NULL pointer dereference at 0000000000000008<br />
127.0.0.1-2013-06-08-15:10:15/vmcore-dmesg.txt:<1>BUG: unable to handle kernel NULL pointer dereference at 0000000000000218<br />
127.0.0.1-2013-06-08-17:44:43/vmcore-dmesg.txt:<1>BUG: unable to handle kernel NULL pointer dereference at 0000000000000218<br />
<br />
[crash]$ grep RIP */*txt | grep "<4>"<br />
127.0.0.1-2013-05-19-12:04:05/vmcore-dmesg.txt:<4>RIP: 0010:[<ffffffff81288d80>] [<ffffffff81288d80>] list_del+0x10/0xa0<br />
127.0.0.1-2013-05-20-07:38:22/vmcore-dmesg.txt:<4>RIP: 0010:[<ffffffff81479ee5>] [<ffffffff81479ee5>] rt_worker_func+0x115/0x350<br />
127.0.0.1-2013-05-20-07:53:54/vmcore-dmesg.txt:<4>RIP: 0010:[<ffffffff81479ee5>] [<ffffffff81479ee5>] rt_worker_func+0x115/0x350<br />
127.0.0.1-2013-05-20-08:37:11/vmcore-dmesg.txt:<4>RIP: 0010:[<ffffffff81479ee5>] [<ffffffff81479ee5>] rt_worker_func+0x115/0x350<br />
127.0.0.1-2013-05-20-08:53:14/vmcore-dmesg.txt:<4>RIP: 0010:[<ffffffff81479ee5>] [<ffffffff81479ee5>] rt_worker_func+0x115/0x350<br />
127.0.0.1-2013-05-20-08:59:52/vmcore-dmesg.txt:<4>RIP: 0010:[<ffffffff812319e0>] [<ffffffff812319e0>] avtab_search_node+0x60/0x90<br />
127.0.0.1-2013-05-20-09:03:09/vmcore-dmesg.txt:<4>RIP: 0010:[<ffffffff81479ee5>] [<ffffffff81479ee5>] rt_worker_func+0x115/0x350<br />
127.0.0.1-2013-05-20-09:07:26/vmcore-dmesg.txt:<4>RIP: 0010:[<ffffffff81479ee5>] [<ffffffff81479ee5>] rt_worker_func+0x115/0x350<br />
127.0.0.1-2013-05-20-09:11:22/vmcore-dmesg.txt:<4>RIP: 0010:[<ffffffff81479ee5>] [<ffffffff81479ee5>] rt_worker_func+0x115/0x350<br />
127.0.0.1-2013-05-20-09:34:59/vmcore-dmesg.txt:<4>RIP: 0010:[<ffffffff81479ee5>] [<ffffffff81479ee5>] rt_worker_func+0x115/0x350<br />
127.0.0.1-2013-05-20-09:38:32/vmcore-dmesg.txt:<4>RIP: 0010:[<ffffffff81288d8b>] [<ffffffff81288d8b>] list_del+0x1b/0xa0<br />
127.0.0.1-2013-05-20-09:44:02/vmcore-dmesg.txt:<4>RIP: 0010:[<ffffffff81479ee5>] [<ffffffff81479ee5>] rt_worker_func+0x115/0x350<br />
127.0.0.1-2013-05-20-10:24:19/vmcore-dmesg.txt:<4>RIP: 0010:[<ffffffff81479ee5>] [<ffffffff81479ee5>] rt_worker_func+0x115/0x350<br />
127.0.0.1-2013-05-20-10:27:35/vmcore-dmesg.txt:<4>RIP: 0010:[<ffffffff81479ee5>] [<ffffffff81479ee5>] rt_worker_func+0x115/0x350<br />
127.0.0.1-2013-05-20-10:32:38/vmcore-dmesg.txt:<4>RIP: 0010:[<ffffffff81479ee5>] [<ffffffff81479ee5>] rt_worker_func+0x115/0x350<br />
127.0.0.1-2013-05-20-10:41:34/vmcore-dmesg.txt:<4>RIP: 0010:[<ffffffff81479ee5>] [<ffffffff81479ee5>] rt_worker_func+0x115/0x350<br />
127.0.0.1-2013-05-20-10:51:51/vmcore-dmesg.txt:<4>RIP: 0010:[<ffffffff81479ee5>] [<ffffffff81479ee5>] rt_worker_func+0x115/0x350<br />
127.0.0.1-2013-05-20-10:54:18/vmcore-dmesg.txt:<4>RIP: 0010:[<ffffffff8112e20b>] [<ffffffff8112e20b>] __set_page_dirty_nobuffers+0x2b/0x160<br />
127.0.0.1-2013-05-20-12:02:22/vmcore-dmesg.txt:<4>RIP: 0010:[<ffffffff81288d8b>] [<ffffffff81288d8b>] list_del+0x1b/0xa0<br />
127.0.0.1-2013-06-08-15:10:15/vmcore-dmesg.txt:<4>RIP: 0010:[<ffffffff8147a2c5>] [<ffffffff8147a2c5>] rt_worker_func+0x115/0x350<br />
127.0.0.1-2013-06-08-17:44:43/vmcore-dmesg.txt:<4>RIP: 0010:[<ffffffff8147a2c5>] [<ffffffff8147a2c5>] rt_worker_func+0x115/0x350
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