Sep  6 12:33:19 ipp037 [  150.326671] BUG: soft lockup - CPU#0 stuck for 61s! [swapon:8732]
Sep  6 12:33:19 ipp037 [  150.326671] Modules linked in: w83793 hwmon_vid autofs4 i2c_i801 e1000e i2c_core iTCO_wdt tg3 libphy e1000 xfs dm_snapshot dm_mirror dm_region_hash dm_log aacraid 3w_9xxx 3w_xxxx atp870u arcmsr aic7xxx scsi_wait_scan
Sep  6 12:33:19 ipp037 [  150.326671] CPU 0:
Sep  6 12:33:19 ipp037 [  150.326671] Modules linked in: w83793 hwmon_vid autofs4 i2c_i801 e1000e i2c_core iTCO_wdt tg3 libphy e1000 xfs dm_snapshot dm_mirror dm_region_hash dm_log aacraid 3w_9xxx 3w_xxxx atp870u arcmsr aic7xxx scsi_wait_scan
Sep  6 12:33:19 ipp037 [  150.326671] Pid: 8732, comm: swapon Not tainted 2.6.28-rc7-00105-gfeaf384 #4
Sep  6 12:33:19 ipp037 [  150.326671] RIP: 0010:[<ffffffff805b780a>]  [<ffffffff805b780a>] _spin_unlock_irqrestore+0x29/0x2e
Sep  6 12:33:19 ipp037 [  150.326671] RSP: 0018:ffff8803271bbe58  EFLAGS: 00000292
Sep  6 12:33:19 ipp037 [  150.326671] RAX: 0000000000000000 RBX: 0000000000000292 RCX: ffff88033c9e15a8
Sep  6 12:33:19 ipp037 [  150.326671] RDX: 000000000000a8a7 RSI: 0000000000000293 RDI: ffff880327470118
Sep  6 12:33:19 ipp037 [  150.326671] RBP: 0000000000000292 R08: 0000000000000001 R09: 0000000001d8b7cf
Sep  6 12:33:19 ipp037 [  150.326671] R10: 0000000000000000 R11: ffffffffa00dd229 R12: ffffffff80257376
Sep  6 12:33:19 ipp037 [  150.326671] R13: 0000000000000041 R14: ffff88033c9e15d0 R15: ffffffff80a7c0f0
Sep  6 12:33:19 ipp037 [  150.326671] FS:  00007fc523be1740(0000) GS:ffffffff80872d80(0000) knlGS:0000000000000000
Sep  6 12:33:19 ipp037 [  150.326671] CS:  0010 DS: 0000 ES: 0000 CR0: 000000008005003b
Sep  6 12:33:19 ipp037 [  150.326671] CR2: 00007fc523bfc000 CR3: 000000032a911000 CR4: 00000000000006e0
Sep  6 12:33:19 ipp037 [  150.326671] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
Sep  6 12:33:19 ipp037 [  150.326671] DR3: 0000000000000000 DR6: 00000000ffff0ff0 DR7: 0000000000000400
Sep  6 12:33:19 ipp037 [  150.326671] Call Trace:
Sep  6 12:33:19 ipp037 [  150.326798]  [<ffffffffa00c13ed>] ? xfs_iunlock+0x31/0x7b [xfs]
Sep  6 12:33:19 ipp037 [  150.326798]  [<ffffffffa00dd26e>] ? xfs_vm_bmap+0x45/0x5c [xfs]
Sep  6 12:33:19 ipp037 [  150.326798]  [<ffffffff80298e65>] ? sys_swapon+0x564/0x995
Sep  6 12:33:19 ipp037 [  150.326798]  [<ffffffff805b7141>] ? lockdep_sys_exit_thunk+0x35/0x67
Sep  6 12:33:19 ipp037 [  150.326798]  [<ffffffff8020bd2b>] ? system_call_fastpath+0x16/0x1b