[  544.436072] BUG: Bad page state in process mpt/0  pfn:166010
[  544.437601] device-mapper: multipath: Failing path 8:240.
[  544.447305] page:ffffea0004e50380 flags:060000000010000c count:0 mapcount:65535 mapping:(null) index:ffff880166010101
[  544.470150] Pid: 554, comm: mpt/0 Not tainted 2.6.32-27-server #46~mptsas-Ubuntu
[  544.470154] Call Trace:
[  544.470165]  [<ffffffff810f7e75>] bad_page+0xf5/0x150
[  544.470174]  [<ffffffff810387b9>] ? default_spin_lock_flags+0x9/0x10
[  544.470181]  [<ffffffff810fb1d7>] free_hot_cold_page+0x1e7/0x240
[  544.470187]  [<ffffffff810fb289>] __pagevec_free+0x59/0xb0
[  544.470193]  [<ffffffff810fe31c>] release_pages+0x24c/0x2a0
[  544.470201]  [<ffffffff811340b8>] ? discard_slab+0x38/0x50
[  544.470206]  [<ffffffff810fe552>] ____pagevec_lru_add+0x1e2/0x200
[  544.470212]  [<ffffffff810fe813>] lru_add_drain+0x93/0xa0
[  544.470217]  [<ffffffff810fe8f6>] __pagevec_release+0x16/0x40
[  544.470222]  [<ffffffff810fee78>] invalidate_mapping_pages+0x138/0x140
[  544.470231]  [<ffffffff8116d8f6>] invalidate_bdev+0x36/0x40
[  544.470237]  [<ffffffff81172f7f>] __invalidate_device+0x4f/0x60
[  544.470244]  [<ffffffff812a6d96>] invalidate_partition+0x36/0x50
[  544.470251]  [<ffffffff811a733a>] del_gendisk+0x7a/0x150
[  544.470258]  [<ffffffff81367cd7>] ? put_device+0x17/0x20
[  544.470265]  [<ffffffff813a587a>] sd_remove+0x5a/0xa0
[  544.470271]  [<ffffffff8136bb7f>] __device_release_driver+0x6f/0xe0
[  544.470276]  [<ffffffff8136bced>] device_release_driver+0x2d/0x40
[  544.470282]  [<ffffffff8136ad0a>] bus_remove_device+0x9a/0xc0
[  544.470287]  [<ffffffff81368e67>] device_del+0x127/0x1d0
[  544.470294]  [<ffffffff81390dd5>] __scsi_remove_device+0xb5/0xc0
[  544.470299]  [<ffffffff81390e10>] scsi_remove_device+0x30/0x50
[  544.470304]  [<ffffffff81390efb>] __scsi_remove_target+0xab/0xe0
[  544.470310]  [<ffffffff81390fa0>] ? __remove_child+0x0/0x30
[  544.470315]  [<ffffffff81390fc3>] __remove_child+0x23/0x30
[  544.470320]  [<ffffffff8136866c>] device_for_each_child+0x4c/0x80
[  544.470326]  [<ffffffff81390f6e>] scsi_remove_target+0x3e/0x70
[  544.470343]  [<ffffffffa004d0c5>] sas_rphy_remove+0x75/0x80 [scsi_transport_sas]
[  544.470352]  [<ffffffffa004d366>] sas_rphy_delete+0x16/0x30 [scsi_transport_sas]
[  544.470362]  [<ffffffffa004d3aa>] sas_port_delete+0x2a/0x140 [scsi_transport_sas]
[  544.470369]  [<ffffffff811af9f1>] ? sysfs_remove_link+0x21/0x30
[  544.470379]  [<ffffffffa00b0333>] mptsas_del_end_device+0x273/0x2a0 [mptsas]
[  544.470389]  [<ffffffffa00b55ab>] mptsas_expander_delete+0x12b/0x340 [mptsas]
[  544.470398]  [<ffffffffa00b5892>] mptsas_send_expander_event+0xd2/0xf0 [mptsas]
[  544.470407]  [<ffffffffa00b5cd0>] ? mptsas_firmware_event_work+0x0/0x1d0 [mptsas]
[  544.470416]  [<ffffffffa00b5de8>] mptsas_firmware_event_work+0x118/0x1d0 [mptsas]
[  544.470424]  [<ffffffff8107f6b7>] run_workqueue+0xc7/0x1a0
[  544.470431]  [<ffffffff8107f833>] worker_thread+0xa3/0x110
[  544.470437]  [<ffffffff81084250>] ? autoremove_wake_function+0x0/0x40
[  544.470443]  [<ffffffff8107f790>] ? worker_thread+0x0/0x110
[  544.470448]  [<ffffffff81083ed6>] kthread+0x96/0xa0
[  544.470455]  [<ffffffff810131ea>] child_rip+0xa/0x20
[  544.470461]  [<ffffffff81083e40>] ? kthread+0x0/0xa0
[  544.470466]  [<ffffffff810131e0>] ? child_rip+0x0/0x20