0007958: irqbalance crash at do_lookup

vmcore info: <br /> <br /> id: 3543, comm: irqbalance Tainted: G W --------------- 2.6.32-431.el6.x86_64 #1 Sugon P200/X9DR3-F<br /> RIP: 0010:[<ffffffff811a375c>] [<ffffffff811a375c>] __d_lookup+0x8c/0x150<br /> RSP: 0018:ffff8808752c9b98 EFLAGS: 00010286<br /> RAX: 0000000000000002 RBX: ca862200f5d3f227 RCX: 0000000000000016<br /> RDX: 018721dffa1ea22d RSI: ffff8808752c9cd8 RDI: ffff880178c82440<br /> RBP: ffff8808752c9be8 R08: 0000000000000000 R09: ffff880178c82440<br /> R10: 0000000000000000 R11: 0000000000000000 R12: ca862200f5d3f20f<br /> R13: ffff880178c82440 R14: 000000000001d19c R15: ffff8808749b0080<br /> FS: 00007f5eeeb79720(0000) GS:ffff880028360000(0000) knlGS:0000000000000000<br /> CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033<br /> CR2: 00007f5eeeb89000 CR3: 0000000877172000 CR4: 00000000000407e0<br /> DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000<br /> DR3: 0000000000000000 DR6: 00000000ffff0ff0 DR7: 0000000000000400<br /> Process irqbalance (pid: 3543, threadinfo ffff8808752c8000, task ffff8808749b0080)<br /> Stack:<br /> ffff88015e6d102a 00000002767aee80 0000000000000002 ffff8808752c9cd8<br /> <d> ffff8808752c9be8 ffff8808752c9e08 ffff8808752c9ce8 ffff8808752c9cd8<br /> <d> ffff8804767aee80 ffff8808749b0080 ffff8808752c9c48 ffffffff811988c6<br /> Call Trace:<br /> [<ffffffff811988c6>] do_lookup+0x36/0x230<br /> [<ffffffff81198dc0>] __link_path_walk+0x200/0xff0<br /> [<ffffffff810eafb0>] ? irq_affinity_hint_proc_show+0x0/0x140<br /> [<ffffffff81199e6a>] path_walk+0x6a/0xe0<br /> [<ffffffff8119a07b>] filename_lookup+0x6b/0xc0<br /> [<ffffffff812263e6>] ? security_file_alloc+0x16/0x20<br /> [<ffffffff8119b554>] do_filp_open+0x104/0xd20<br /> [<ffffffff81153f88>] ? anon_vma_chain_free+0x18/0x20<br /> [<ffffffff81154121>] ? unlink_anon_vmas+0x71/0xd0<br /> [<ffffffff81150240>] ? unmap_region+0x110/0x130<br /> [<ffffffff811a8212>] ? alloc_fd+0x92/0x160<br /> [<ffffffff81185d29>] do_sys_open+0x69/0x140<br /> [<ffffffff81185e40>] sys_open+0x20/0x30<br /> [<ffffffff8100b072>] system_call_fastpath+0x16/0x1b<br /> Code: 48 03 05 f8 6c a6 00 48 8b 18 8b 45 bc 48 85 db 48 89 45 c0 75 11 eb 74 0f 1f 80 00 00 00 00 48 8b 1b 48 85 db 74 65 4c 8d 63 e8 <45> 39 74 24 30 75 ed 4d 39 6c 24 28 75 e6 4d 8d 7c 24 08 4c 89 <br /> RIP [<ffffffff811a375c>] __d_lookup+0x8c/0x150<br /> RSP <ffff8808752c9b98>