------------[ cut here ]------------ kernel BUG at fs/inode.c:1323! invalid opcode: 0000 [#1] PREEMPT SMP last sysfs file: /sys/kernel/dlm/clvmd/control CPU 2 Pid: 6279, comm: dlm_send Tainted: G W 2.6.31.6-o0 #1 PowerEdge 1950 RIP: 0010:[<ffffffff810a6c71>] [<ffffffff810a6c71>] iput+0x13/0x60 RSP: 0018:ffff880129dadce0 EFLAGS: 00010246 RAX: 0000000000000000 RBX: ffff8801270a0308 RCX: ffff880028060d30 RDX: 0000000000000055 RSI: ffff8801270a02c0 RDI: ffff8801270a0308 RBP: ffff880114e8b740 R08: 8000000000000000 R09: ffff880129dadca0 R10: ffff880129dadca0 R11: ffffffff814c21c5 R12: ffff880114e8b750 R13: ffff880114e8b740 R14: ffff880114e8b780 R15: ffffc90011399018 FS: 0000000000000000(0000) GS:ffff880028052000(0000) knlGS:0000000000000000 CS: 0010 DS: 0018 ES: 0018 CR0: 000000008005003b CR2: 00007fe34125b000 CR3: 000000012203b000 CR4: 00000000000006e0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000ffff0ff0 DR7: 0000000000000400 Process dlm_send (pid: 6279, threadinfo ffff880129dac000, task ffff8800cb00f500) Stack: 0000000000000000 ffffffff810f37c0 0000000000000000 0000000000000000 <0> 0000000000000000 ffffffff81030500 0000000000000000 0000000000012080 <0> ffff8800cb00f500 ffff880028064080 ffff8800cb00f538 ffffffff8103123e Call Trace: [<ffffffff810f37c0>] ? tcp_connect_to_sock+0x212/0x261 [<ffffffff81030500>] ? update_curr+0x4e/0xe1 [<ffffffff8103123e>] ? dequeue_task_fair+0x47/0x1ad [<ffffffff815b1182>] ? _spin_unlock_irq+0x11/0x2b [<ffffffff81035545>] ? finish_task_switch+0x5d/0xbd [<ffffffff810f476a>] ? process_send_sockets+0x2e/0x1bb [<ffffffff815b0fd4>] ? _spin_lock_irqsave+0x18/0x34 [<ffffffff810f473c>] ? process_send_sockets+0x0/0x1bb [<ffffffff8104990d>] ? worker_thread+0xec/0x194 [<ffffffff8104ce98>] ? autoremove_wake_function+0x0/0x2e [<ffffffff81049821>] ? worker_thread+0x0/0x194 [<ffffffff8104cba1>] ? kthread+0x8b/0x93 [<ffffffff8100c94a>] ? child_rip+0xa/0x20 [<ffffffff8104cb16>] ? kthread+0x0/0x93 [<ffffffff8100c940>] ? child_rip+0x0/0x20 Code: 4b 70 be 01 00 00 00 48 89 df e8 f0 8a 00 00 eb db 48 83 c4 28 5b 5d c3 53 48 85 ff 48 89 fb 74 55 48 83 bf 30 02 00 00 40 75 04 <0f> 0b eb fe 48 8d 7f 48 48 c7 c6 90 07 96 81 e8 a7 2e 25 00 85 RIP [<ffffffff810a6c71>] iput+0x13/0x60 RSP <ffff880129dadce0> ---[ end trace 8aac874df8e186c5 ]---
not a sysfs issue.