I am also seeing what appears to be double-removal of scsi-devices during rport tear-down after TMO. Configuration is 4 initiator ports connected to a 15 disc JBOD via a switch. <start I/O> <disable switch> [ 1683.833707] scsi(6): Asynchronous LOOP DOWN (2). [ 1683.838369] scsi(6:0:0): status_entry: Port Down pid=4794, compl status=0x28, port state=0x3 ... <drop rport references> ... <TMO expires> [ 1718.769498] rport-6:0-0: blocked FC remote port time out: removing target and saving binding [ 1718.778020] rport-6:0-1: blocked FC remote port time out: removing target and saving binding [ 1718.786537] rport-6:0-2: blocked FC remote port time out: removing target and saving binding [ 1718.786551] rport-6:0-3: blocked FC remote port time out: removing target and saving binding [ 1718.786558]rror: return code = 0x10000 [ 1718.811619] end_request: I/O error, dev sdb, sector 13544 ... <streams of expected I/O failures> [ 1722.144641] end_request: I/O error, dev sdk, sector 16384 [ 1722.144655] sd 6:0:9:0: rejecting I/O to device being removed [ 1722.144679] end_request: I/O error, dev sdk, sector 16384 [ 1722.144691] sd 6:0:9:0: rejecting I/O to device being removed [ 1722.144717] end_request: I/O error, dev sdk, sector 18432 [ 1722.144730] sd 6:0:9:0: rejecting I/O to device being removed ... <some badness> [ 1722.145924] sd 6:0:9:0: rejecting I/O to device being removed [ 1722.388418] VFS: brelse: Trying to free free buffer [ 1722.388430] Badness in __brelse at fs/buffer.c:1275 [ 1722.388534] [<c014fb04>] invalidate_bh_lru+0x27/0x38 [ 1722.388551] [<c014fadd>] invalidate_bh_lru+0x0/0x38 [ 1722.388558] [<c010c5c4>] smp_call_function_interrupt+0x39/0x55 [ 1722.388570] [<c01031a0>] call_function_interrupt+0x1c/0x24 [ 1722.388578] [<c014f7bc>] __brelse+0xf/0x3d [ 1722.388585] [<c014fb04>] invalidate_bh_lru+0x27/0x38 [ 1722.388591] [<c014fb2f>] invalidate_bh_lrus+0x1a/0x1c [ 1722.388597] [<c014eddc>] invalidate_bdev+0xa/0x1d [ 1722.388603] [<c0162de4>] __invalidate_device+0x35/0x3d [ 1722.388613] [<c01d3e5f>] invalidate_partition+0x2d/0x3d [ 1722.388623] [<c017a7f5>] del_gendisk+0x15/0xe0 [ 1722.388630] [<c0284f67>] sd_remove+0x17/0x4f [ 1722.388639] [<c0224c39>] __device_release_driver+0x6c/0x87 [ 1722.388648] [<c0224c7a>] device_release_driver+0x26/0x36 [ 1722.388654] [<c0224497>] bus_remove_device+0x55/0x68 [ 1722.388659] [<c02236a2>] device_del+0x3c/0x6b [ 1722.388666] [<c0259cbd>] __scsi_remove_device+0x32/0x65 [ 1722.388675] [<c0259d08>] scsi_remove_device+0x18/0x22 [ 1722.388681] [<c0259db6>] __scsi_remove_target+0xa4/0xb1 [ 1722.388691] [<c0259dc3>] __remove_child+0x0/0x1e [ 1722.388697] [<c0259ddc>] __remove_child+0x19/0x1e [ 1722.388703] [<c0223721>] device_for_each_child+0x23/0x4a [ 1722.388709] [<c0259e15>] scsi_remove_target+0x34/0x42 [ 1722.388715] [<c0259dc3>] __remove_child+0x0/0x1e [ 1722.388721] [<f8835883>] fc_shost_remove_rports+0x68/0xa9 [scsi_transport_fc] [ 1722.388735] [<c0126d1c>] run_workqueue+0x83/0xc1 [ 1722.388742] [<f883581b>] fc_shost_remove_rports+0x0/0xa9 [scsi_transport_fc] [ 1722.388752] [<c0126ea3>] flush_cpu_workqueue+0x1f/0xb2 [ 1722.388758] [<c0126f2e>] flush_cpu_workqueue+0xaa/0xb2 [ 1722.388764] [<c0129f4a>] autoremove_wake_function+0x0/0x3a [ 1722.388773] [<c02e8feb>] _spin_lock_irqsave+0xa/0xf [ 1722.388780] [<c0129f4a>] autoremove_wake_function+0x0/0x3a [ 1722.388787] [<c02e909c>] _spin_unlock_irqrestore+0x9/0xe [ 1722.388793] [<c0126f65>] flush_workqueue+0x2f/0x8b [ 1722.388799] [<f8834e49>] fc_rport_tgt_remove+0x60/0x6d [scsi_transport_fc] [ 1722.388810] [<f8835883>] fc_shost_remove_rports+0x68/0xa9 [scsi_transport_fc] [ 1722.388820] [<c0126d1c>] run_workqueue+0x83/0xc1 [ 1722.388825] [<f883581b>] fc_shost_remove_rports+0x0/0xa9 [scsi_transport_fc] [ 1722.388835] [<c0126e51>] worker_thread+0xf7/0x12a [ 1722.388841] [<c0114922>] default_wake_function+0x0/0x12 [ 1722.388851] [<c0114922>] default_wake_function+0x0/0x12 [ 1722.388858] [<c0126d5a>] worker_thread+0x0/0x12a [ 1722.388863] [<c0129ad3>] kthread+0x7c/0xa6 [ 1722.388869] [<c0129a57>] kthread+0x0/0xa6 [ 1722.388875] [<c0100ed1>] kernel_thread_helper+0x5/0xb [ 1722.430316] sd 6:0:9:0: rejecting I/O to device being removed [ 1722.461495] sd 6:0:9:0: rejecting I/O to device being removed This is with the latest linux-2.6.git tree and scsi-rc-fixes-2.6.git tree merged. -- av - : send the line "unsubscribe linux-scsi" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
