General Protection fault (GPF) Ultra 2 hangs unresponsive

Me too. Or something like it. Home user so some of this stuff over my head. Don't want to keep doing hard reboots if I can help it. Can't see a pattern, sometimes weeks sometimes days. Really would just like to understand
- what is causing it
- how to fix it
And disappointed to date not to know either. Have copied todays system log below - but beyond "Oct 18 10:18:40 straffnas kernel: Fixing recursive fault but reboot is needed!" I am at a loss

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Oct 18 06:25:10 straffnas syslogd 1.4.1#18: restart.
Oct 18 07:16:46 straffnas kernel: MODE SENSE: unimplemented page/subpage: 0x1c/0x00 Oct 18 07:51:37 straffnas last message repeated 3 times Oct 18 09:15:15 straffnas last message repeated 3 times Oct 18 09:15:19 straffnas last message repeated 2 times Oct 18 10:18:38 straffnas kernel: general protection fault: 0000 [#1] SMP Oct 18 10:18:38 straffnas kernel: last sysfs file: /sys/devices/platform/it87.2576/fan1_input
Oct 18 10:18:38 straffnas kernel: CPU 0 Oct 18 10:18:38 straffnas kernel: Modules linked in: target_core_file iscsi_target_mod target_core_mod pvgpio nv6vpd(P) Oct 18 10:18:38 straffnas kernel:
Oct 18 10:18:38 straffnas kernel: Pid: 23009, comm: sleep Tainted: P 2.6.37.6.RNx86_64.2.4 #1 NETGEAR ReadyNAS/ReadyNAS
Oct 18 10:18:38 straffnas kernel: RIP: 0010:[<ffffffff880ac8c7>] [<ffffffff880ac8c7>] filp_close+0x17/0x90 Oct 18 10:18:38 straffnas kernel: RSP: 0000:ffff880038c53f28 EFLAGS: 00010286 Oct 18 10:18:38 straffnas kernel: RAX: fffffffffffffffd RBX: 2300f610f99a46e0 RCX: 0000000000000001 Oct 18 10:18:38 straffnas kernel: RDX: 0000000000000000 RSI: ffff880038f7d600 RDI: 2300f610f99a46e0 Oct 18 10:18:38 straffnas kernel: RBP: ffff880038c53f48 R08: 0000000000000001 R09: 00000000ff80c430 Oct 18 10:18:38 straffnas kernel: R10: ffff880038c52000 R11: 0000000000000000 R12: ffff880038f7d680 Oct 18 10:18:38 straffnas kernel: R13: 0000000000000001 R14: 2300f610f99a46e0 R15: 0000000000000000 Oct 18 10:18:38 straffnas kernel: FS: 0000000000000000(0000) GS:ffff88003f200000(0063) knlGS:00000000f765d6b0 Oct 18 10:18:38 straffnas kernel: CS: 0010 DS: 002b ES: 002b CR0: 000000008005003b Oct 18 10:18:38 straffnas kernel: CR2: 00000000f76c45d0 CR3: 0000000035b56000 CR4: 00000000000006f0 Oct 18 10:18:38 straffnas kernel: DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 Oct 18 10:18:38 straffnas kernel: DR3: 0000000000000000 DR6: 00000000ffff0ff0 DR7: 0000000000000400 Oct 18 10:18:38 straffnas kernel: Process sleep (pid: 23009, threadinfo ffff880038c52000, task ffff880038245550) Oct 18 10:18:38 straffnas kernel: Stack:
Oct 18 10:18:38 straffnas kernel: 0000000000000000 ffff880038f7d600 ffff880038f7d680 0000000000000001 Oct 18 10:18:38 straffnas kernel: ffff880038c53f78 ffffffff880adae4 0000000000000001 0000000000000000 Oct 18 10:18:38 straffnas kernel: 0000000000000000 0000000000000000 00000000ff80c430 ffffffff88024c53 Oct 18 10:18:38 straffnas kernel: Call Trace:
Oct 18 10:18:38 straffnas kernel: [<ffffffff880adae4>] sys_close+0xa4/0x100 Oct 18 10:18:38 straffnas kernel: [<ffffffff88024c53>] ia32_sysret+0x0/0x5 Oct 18 10:18:38 straffnas kernel: Code: 83 80 00 00 00 48 8b 1c 24 4c 8b 64 24 08 c9 c3 66 66 66 90 55 48 89 e5 48 83 ec 20 48 89 5d e8 4c 89 65 f0 48 89 fb 4c 89 6d f8 <48> 8b 47 30 49 89 f4 48 85 c0 74 52 48 8b 47 20 48 85 c0 74 44 Oct 18 10:18:38 straffnas kernel: RIP [<ffffffff880ac8c7>] filp_close+0x17/0x90 Oct 18 10:18:38 straffnas kernel: RSP <ffff880038c53f28> Oct 18 10:18:38 straffnas kernel: ---[ end trace 012d71a2d6254e97 ]--- Oct 18 10:18:40 straffnas kernel: general protection fault: 0000 [#2] SMP Oct 18 10:18:40 straffnas kernel: last sysfs file: /sys/devices/platform/it87.2576/fan1_input
Oct 18 10:18:40 straffnas kernel: CPU 0 Oct 18 10:18:40 straffnas kernel: Modules linked in: target_core_file iscsi_target_mod target_core_mod pvgpio nv6vpd(P) Oct 18 10:18:40 straffnas kernel:
Oct 18 10:18:40 straffnas kernel: Pid: 23009, comm: sleep Tainted: P D 2.6.37.6.RNx86_64.2.4 #1 NETGEAR ReadyNAS/ReadyNAS
Oct 18 10:18:40 straffnas kernel: RIP: 0010:[<ffffffff880ac8c7>] [<ffffffff880ac8c7>] filp_close+0x17/0x90 Oct 18 10:18:40 straffnas kernel: RSP: 0000:ffff880038c53cd8 EFLAGS: 00010286 Oct 18 10:18:40 straffnas kernel: RAX: ffff8800049b7010 RBX: 01000608927d3418 RCX: 0000000000000000 Oct 18 10:18:40 straffnas kernel: RDX: 0000000000000000 RSI: ffff880038f7d600 RDI: 01000608927d3418 Oct 18 10:18:40 straffnas kernel: RBP: ffff880038c53cf8 R08: ffff880038c52000 R09: 0000000000000000 Oct 18 10:18:40 straffnas kernel: R10: ffff88003f211530 R11: 0000000000000000 R12: ffff880038f7d600 Oct 18 10:18:40 straffnas kernel: R13: 0000000000000000 R14: ffff88003936ec40 R15: 0000000000000010 Oct 18 10:18:40 straffnas kernel: FS: 0000000000000000(0000) GS:ffff88003f200000(0000) knlGS:0000000000000000 Oct 18 10:18:40 straffnas kernel: CS: 0010 DS: 002b ES: 002b CR0: 000000008005003b Oct 18 10:18:40 straffnas kernel: CR2: 00000000f76c45d0 CR3: 000000000880f000 CR4: 00000000000006f0 Oct 18 10:18:40 straffnas kernel: DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 Oct 18 10:18:40 straffnas kernel: DR3: 0000000000000000 DR6: 00000000ffff0ff0 DR7: 0000000000000400 Oct 18 10:18:40 straffnas kernel: Process sleep (pid: 23009, threadinfo ffff880038c52000, task ffff880038245550) Oct 18 10:18:40 straffnas kernel: Stack:
Oct 18 10:18:40 straffnas kernel: ffff88003d27aa00 0000000000000001 ffff880038f7d600 0000000000000000 Oct 18 10:18:40 straffnas kernel: ffff880038c53d38 ffffffff88036843 0000000000000000 ffff880038245550 Oct 18 10:18:40 straffnas kernel: ffff880038f7d600 ffff880038245550 0000000000000071 ffff8800383e3480 Oct 18 10:18:40 straffnas kernel: Call Trace:
Oct 18 10:18:40 straffnas kernel: [<ffffffff88036843>] put_files_struct+0xc3/0xd0 Oct 18 10:18:40 straffnas kernel: [<ffffffff88036895>] exit_files+0x45/0x50 Oct 18 10:18:40 straffnas kernel: [<ffffffff88037a20>] do_exit+0x190/0x770 Oct 18 10:18:40 straffnas kernel: [<ffffffff88002bce>] ? apic_timer_interrupt+0xe/0x20 Oct 18 10:18:40 straffnas kernel: [<ffffffff88035fd0>] ? kmsg_dump+0x110/0x160 Oct 18 10:18:40 straffnas kernel: [<ffffffff88006506>] oops_end+0xa6/0xb0 Oct 18 10:18:40 straffnas kernel: [<ffffffff88006606>] die+0x56/0x90 Oct 18 10:18:40 straffnas kernel: [<ffffffff880040f2>] do_general_protection+0x152/0x160 Oct 18 10:18:40 straffnas kernel: [<ffffffff885b48ef>] general_protection+0x1f/0x30 Oct 18 10:18:40 straffnas kernel: [<ffffffff880ac8c7>] ? filp_close+0x17/0x90 Oct 18 10:18:40 straffnas kernel: [<ffffffff880adae4>] sys_close+0xa4/0x100 Oct 18 10:18:40 straffnas kernel: [<ffffffff88024c53>] ia32_sysret+0x0/0x5 Oct 18 10:18:40 straffnas kernel: Code: 83 80 00 00 00 48 8b 1c 24 4c 8b 64 24 08 c9 c3 66 66 66 90 55 48 89 e5 48 83 ec 20 48 89 5d e8 4c 89 65 f0 48 89 fb 4c 89 6d f8 <48> 8b 47 30 49 89 f4 48 85 c0 74 52 48 8b 47 20 48 85 c0 74 44 Oct 18 10:18:40 straffnas kernel: RIP [<ffffffff880ac8c7>] filp_close+0x17/0x90 Oct 18 10:18:40 straffnas kernel: RSP <ffff880038c53cd8> Oct 18 10:18:40 straffnas kernel: ---[ end trace 012d71a2d6254e98 ]--- Oct 18 10:18:40 straffnas kernel: Fixing recursive fault but reboot is needed!
Oct 18 11:21:45 straffnas upnpd(eth0)[2690]: recv (state0): Connection reset by peer Oct 18 11:28:42 straffnas kernel: UDP: bad checksum. From 194.168.4.100:53 to 192.168.0.25:54346 ulen 61 Oct 18 12:13:00 straffnas upnpd(eth0)[2690]: recv (state0): Connection reset by peer Oct 18 12:18:37 straffnas upnpd(eth0)[2690]: recv (state0): Connection reset by peer Oct 18 12:20:45 straffnas upnpd(eth0)[2690]: recv (state0): Connection reset by peer Oct 18 12:22:52 straffnas upnpd(eth0)[2690]: recv (state0): Connection reset by peer Oct 18 12:27:26 straffnas kernel: iSCSI Login timeout on Network Portal 192.168.0.25:3260 Oct 18 12:27:26 straffnas kernel: rx_data returned -512, expecting 48.
Oct 18 12:27:27 straffnas kernel: iSCSI Login negotiation failed.