On Tue, 5 Feb 2013, Bart Van Assche wrote: > Fix a few race conditions that can be triggered by removing a device: > - Fix a race between starved list processing and device removal. > - Avoid that a SCSI LLD callback can get invoked after > scsi_remove_host() finished. > - Speed up device removal by stopping error handling as soon as > the SHOST_DEL or SHOST_DEL_RECOVERY state has been reached. > - Save and restore the host_scribble field during error handling > > These patches have been tested on top of kernel v3.8-rc6 and are also > available here: http://github.com/bvanassche/linux/tree/device-removal-fixes. Hi Bart, I gave your patchset a spin on our ftServer, which supports hotplug of PCI devices. Before attempting a surprise HW removal of an LSI Fusion SAS-2 SCSI controller, I issued an orderly removal through our hotplug driver. The device removal appeared to hang (this does not occur with vanilla 3.8.0-rc6): PID: 3331 TASK: ffff88083e968000 CPU: 28 COMMAND: "java" #0 [ffff88084fd5da48] __schedule at ffffffff8165e8f4 #1 [ffff88084fd5dac0] schedule at ffffffff8165f0d9 #3 [ffff88084fd5db30] _scsih_remove at ffffffffa008416d [mpt2sas] #4 [ffff88084fd5db80] pci_device_remove at ffffffff81335e66 #5 [ffff88084fd5dbb0] __device_release_driver at ffffffff813fd23c #6 [ffff88084fd5dbd0] device_release_driver at ffffffff813fd57c #7 [ffff88084fd5dbf0] bus_remove_device at ffffffff813fccde #8 [ffff88084fd5dc20] device_del at ffffffff813fa0ba #9 [ffff88084fd5dc50] device_unregister at ffffffff813fa172 #10 [ffff88084fd5dc70] pci_stop_bus_device at ffffffff8132fce4 #11 [ffff88084fd5dca0] pci_stop_bus_device at ffffffff8132fc8d #12 [ffff88084fd5dcd0] pci_stop_bus_device at ffffffff8132fc8d #13 [ffff88084fd5dd00] pci_stop_bus_device at ffffffff8132fc8d #14 [ffff88084fd5dd30] pci_stop_bus_device at ffffffff8132fc8d #15 [ffff88084fd5dd60] pci_stop_and_remove_bus_device at ffffffff8132fe46 And to further pin down where we are... crash> sym _scsih_remove ffffffffa0084010 (t) _scsih_remove [mpt2sas] crash> p/x 0xffffffffa008416d - 0xffffffffa0084010 $9 = 0x15d crash> dis -l _scsih_remove <_scsih_remove+0x140>: callq 0xffffffffa0011ea0 <sas_remove_host> <_scsih_remove+0x145>: mov %r13,%rdi <_scsih_remove+0x148>: callq 0xffffffffa00766c0 <mpt2sas_base_detach> <_scsih_remove+0x14d>: mov %r13,%rdi <_scsih_remove+0x150>: callq 0xffffffff8131b930 <list_del> <_scsih_remove+0x155>: mov %r12,%rdi <_scsih_remove+0x158>: callq 0xffffffff8141dcf0 <scsi_remove_host> <_scsih_remove+0x15d>: mov %r12,%rdi <_scsih_remove+0x160>: callq 0xffffffff8141d770 <scsi_host_put> <_scsih_remove+0x165>: add $0x18,%rsp We're stuck in the mpt2sas driver's call to scsi_remove_host(), which "[PATCH v8 07/10] Make scsi_remove_host() wait for device removal" modifies. I re-ran the test with some additional debugging so I could figure out the Scsi_Host it was operating on and found: crash> struct Scsi_Host 0xffff8808513a4290 | grep eh_active eh_active = 0 However, its __devices list was not empty: crash> struct Scsi_Host 0xffff8808513a4290 | grep __devices -A3 __devices = { next = 0xffff880851232530, prev = 0xffff880851235398 }, So scsi_remove_host loops while the __devices list is never cleared. See a complete dump of Scsi_Host and the __devices_list scsi_devices below. Regards, -- Joe crash> struct Scsi_Host 0xffff8808513a4290 > shost struct Scsi_Host { __devices = { next = 0xffff880851232530, prev = 0xffff880851235398 }, __targets = { next = 0xffff881054377980, prev = 0xffff88084ed99528 }, cmd_pool = 0xffffffff81c956c0, free_list_lock = { { rlock = { raw_lock = { { head_tail = 0x2e2e, tickets = { head = 0x2e, tail = 0x2e } } } } } }, free_list = { next = 0xffff88084fb6c008, prev = 0xffff88084fb6c008 }, starved_list = { next = 0xffff8808513a42d0, prev = 0xffff8808513a42d0 }, default_lock = { { rlock = { raw_lock = { { head_tail = 0xe5e5, tickets = { head = 0xe5, tail = 0xe5 } } } } } }, host_lock = 0xffff8808513a42e0, scan_mutex = { count = { counter = 0x1 }, wait_lock = { { rlock = { raw_lock = { { head_tail = 0x0, tickets = { head = 0x0, tail = 0x0 } } } } } }, wait_list = { next = 0xffff8808513a42f8, prev = 0xffff8808513a42f8 }, owner = 0x0 }, eh_cmd_q = { next = 0xffff8808513a4310, prev = 0xffff8808513a4310 }, ehandler = 0xffff8808512d1890, eh_action = 0x0, eh_active = 0x0, host_wait = { lock = { { rlock = { raw_lock = { { head_tail = 0x0, tickets = { head = 0x0, tail = 0x0 } } } } } }, task_list = { next = 0xffff8808513a4340, prev = 0xffff8808513a4340 } }, remove_host = { lock = { { rlock = { raw_lock = { { head_tail = 0x101, tickets = { head = 0x1, tail = 0x1 } } } } } }, task_list = { next = 0xffff88103712faa8, prev = 0xffff88103712faa8 } }, hostt = 0xffffffffa00cc1c0, transportt = 0xffff880850c233d8, bqt = 0x0, host_busy = 0x0, host_failed = 0x0, host_eh_scheduled = 0x0, host_no = 0x0, resetting = 0x0, last_reset = 0x0, max_id = 0xffffffff, max_lun = 0x41ff, max_channel = 0x0, unique_id = 0x0, max_cmd_len = 0x20, this_id = 0xffffffff, can_queue = 0xdfb, cmd_per_lun = 0x7, sg_tablesize = 0x80, sg_prot_tablesize = 0x0, max_sectors = 0x7fff, dma_boundary = 0xffffffff, cmd_serial_number = 0x152f, active_mode = 0x1, unchecked_isa_dma = 0x0, use_clustering = 0x1, use_blk_tcq = 0x0, host_self_blocked = 0x0, reverse_ordering = 0x0, ordered_tag = 0x0, tmf_in_progress = 0x0, async_scan = 0x0, eh_noresume = 0x0, work_q_name = "\000\000\000\000\000\000\000\000\000\000\000\000\000\000\000\000\000\000\000", work_q = 0x0, host_blocked = 0x0, max_host_blocked = 0x7, prot_capabilities = 0x7, prot_guard_type = 0x1, uspace_req_q = 0x0, base = 0x0, io_port = 0x0, n_io_port = 0x0, dma_channel = 0xff, irq = 0x0, shost_state = SHOST_DEL, shost_gendev = { parent = 0xffff881053a92328, p = 0xffff880850ccca28, kobj = { name = 0xffff88084fa2e220 "host0", entry = { next = 0xffff8808513a46c8, prev = 0xffff880851225498 }, parent = 0xffff881053a92338, kset = 0xffff88085f878b98, ktype = 0xffffffff81c92240, sd = 0xffff88084fb65658, kref = { refcount = { counter = 0xe } }, state_initialized = 0x1, state_in_sysfs = 0x1, state_add_uevent_sent = 0x1, state_remove_uevent_sent = 0x0, uevent_suppress = 0x0 }, init_name = 0x0, type = 0xffffffff81c95780, mutex = { count = { counter = 0x1 }, wait_lock = { { rlock = { raw_lock = { { head_tail = 0x0, tickets = { head = 0x0, tail = 0x0 } } } } } }, wait_list = { next = 0xffff8808513a4498, prev = 0xffff8808513a4498 }, owner = 0x0 }, bus = 0xffffffff81c95960, driver = 0x0, platform_data = 0x0, power = { power_state = { event = 0x0 }, can_wakeup = 0x0, async_suspend = 0x1, is_prepared = 0x0, is_suspended = 0x0, ignore_children = 0x0, early_init = 0x1, lock = { { rlock = { raw_lock = { { head_tail = 0xf0f, tickets = { head = 0xf, tail = 0xf } } } } } }, entry = { next = 0xffff8808513a4750, prev = 0xffff880851225520 }, completion = { done = 0x7fffffff, wait = { lock = { { rlock = { raw_lock = { { head_tail = 0x101, tickets = { head = 0x1, tail = 0x1 } } } } } }, task_list = { next = 0xffff8808513a44f0, prev = 0xffff8808513a44f0 } } }, wakeup = 0x0, wakeup_path = 0x0, syscore = 0x0, suspend_timer = { entry = { next = 0x0, prev = 0x0 }, expires = 0x0, base = 0xffff880854090000, function = 0xffffffff814092d0 <pm_suspend_timer_fn>, data = 0xffff8808513a4430, slack = 0xffffffff, start_pid = 0xffffffff, start_site = 0x0, start_comm = "\000\000\000\000\000\000\000\000\000\000\000\000\000\000\000" }, timer_expires = 0x0, work = { data = { counter = 0x10200 }, entry = { next = 0xffff8808513a4570, prev = 0xffff8808513a4570 }, func = 0xffffffff8140a6b0 <pm_runtime_work> }, wait_queue = { lock = { { rlock = { raw_lock = { { head_tail = 0x303, tickets = { head = 0x3, tail = 0x3 } } } } } }, task_list = { next = 0xffff8808513a4590, prev = 0xffff8808513a4590 } }, usage_count = { counter = 0x1 }, child_count = { counter = 0x0 }, disable_depth = 0x0, idle_notification = 0x0, request_pending = 0x0, deferred_resume = 0x0, run_wake = 0x0, runtime_auto = 0x1, no_callbacks = 0x0, irq_safe = 0x0, use_autosuspend = 0x0, timer_autosuspends = 0x0, request = RPM_REQ_NONE, runtime_status = RPM_ACTIVE, runtime_error = 0x0, autosuspend_delay = 0x0, last_busy = 0x0, active_jiffies = 0x119, suspended_jiffies = 0x199ea, accounting_timestamp = 0xfffd2888, subsys_data = 0x0, qos = 0x0 }, pm_domain = 0x0, numa_node = 0xffffffff, dma_mask = 0x0, coherent_dma_mask = 0x0, dma_parms = 0x0, dma_pools = { next = 0xffff8808513a4618, prev = 0xffff8808513a4618 }, dma_mem = 0x0, archdata = { dma_ops = 0x0, iommu = 0x0 }, of_node = 0x0, acpi_node = { handle = 0x0 }, devt = 0x0, id = 0x0, devres_lock = { { rlock = { raw_lock = { { head_tail = 0x0, tickets = { head = 0x0, tail = 0x0 } } } } } }, devres_head = { next = 0xffff8808513a4660, prev = 0xffff8808513a4660 }, knode_class = { n_klist = 0x0, n_node = { next = 0x0, prev = 0x0 }, n_ref = { refcount = { counter = 0x0 } } }, class = 0x0, groups = 0x0, release = 0, iommu_group = 0x0 }, shost_dev = { parent = 0xffff8808513a4430, p = 0xffff880850cccc30, kobj = { name = 0xffff88084fa2dce0 "host0", entry = { next = 0xffff88084fb87448, prev = 0xffff8808513a4448 }, parent = 0xffff8808513e31b0, kset = 0xffff88085f878b98, ktype = 0xffffffff81c92240, sd = 0xffff88084fb78370, kref = { refcount = { counter = 0x3 } }, state_initialized = 0x1, state_in_sysfs = 0x1, state_add_uevent_sent = 0x1, state_remove_uevent_sent = 0x0, uevent_suppress = 0x0 }, init_name = 0x0, type = 0x0, mutex = { count = { counter = 0x1 }, wait_lock = { { rlock = { raw_lock = { { head_tail = 0x0, tickets = { head = 0x0, tail = 0x0 } } } } } }, wait_list = { next = 0xffff8808513a4718, prev = 0xffff8808513a4718 }, owner = 0x0 }, bus = 0x0, driver = 0x0, platform_data = 0x0, power = { power_state = { event = 0x0 }, can_wakeup = 0x0, async_suspend = 0x1, is_prepared = 0x0, is_suspended = 0x0, ignore_children = 0x0, early_init = 0x1, lock = { { rlock = { raw_lock = { { head_tail = 0x0, tickets = { head = 0x0, tail = 0x0 } } } } } }, entry = { next = 0xffff88084fb874d0, prev = 0xffff8808513a44d0 }, completion = { done = 0x7fffffff, wait = { lock = { { rlock = { raw_lock = { { head_tail = 0x101, tickets = { head = 0x1, tail = 0x1 } } } } } }, task_list = { next = 0xffff8808513a4770, prev = 0xffff8808513a4770 } } }, wakeup = 0x0, wakeup_path = 0x0, syscore = 0x0, suspend_timer = { entry = { next = 0x0, prev = 0x0 }, expires = 0x0, base = 0xffff880854090000, function = 0xffffffff814092d0 <pm_suspend_timer_fn>, data = 0xffff8808513a46b0, slack = 0xffffffff, start_pid = 0xffffffff, start_site = 0x0, start_comm = "\000\000\000\000\000\000\000\000\000\000\000\000\000\000\000" }, timer_expires = 0x0, work = { data = { counter = 0x10200 }, entry = { next = 0xffff8808513a47f0, prev = 0xffff8808513a47f0 }, func = 0xffffffff8140a6b0 <pm_runtime_work> }, wait_queue = { lock = { { rlock = { raw_lock = { { head_tail = 0x0, tickets = { head = 0x0, tail = 0x0 } } } } } }, task_list = { next = 0xffff8808513a4810, prev = 0xffff8808513a4810 } }, usage_count = { counter = 0x0 }, child_count = { counter = 0x0 }, disable_depth = 0x1, idle_notification = 0x0, request_pending = 0x0, deferred_resume = 0x0, run_wake = 0x0, runtime_auto = 0x1, no_callbacks = 0x0, irq_safe = 0x0, use_autosuspend = 0x0, timer_autosuspends = 0x0, request = RPM_REQ_NONE, runtime_status = RPM_SUSPENDED, runtime_error = 0x0, autosuspend_delay = 0x0, last_busy = 0x0, active_jiffies = 0x0, suspended_jiffies = 0x0, accounting_timestamp = 0xfffb8d5b, subsys_data = 0x0, qos = 0x0 }, pm_domain = 0x0, numa_node = 0xffffffff, dma_mask = 0x0, coherent_dma_mask = 0x0, dma_parms = 0x0, dma_pools = { next = 0xffff8808513a4898, prev = 0xffff8808513a4898 }, dma_mem = 0x0, archdata = { dma_ops = 0x0, iommu = 0x0 }, of_node = 0x0, acpi_node = { handle = 0x0 }, devt = 0x0, id = 0x0, devres_lock = { { rlock = { raw_lock = { { head_tail = 0x0, tickets = { head = 0x0, tail = 0x0 } } } } } }, devres_head = { next = 0xffff8808513a48e0, prev = 0xffff8808513a48e0 }, knode_class = { n_klist = 0xffff880853dc8730, n_node = { next = 0xffff8808513a27b0, prev = 0xffff880853dc8738 }, n_ref = { refcount = { counter = 0x1 } } }, class = 0xffffffff81c957c0, groups = 0xffffffff81c959e0, release = 0, iommu_group = 0x0 }, sht_legacy_list = { next = 0x0, prev = 0x0 }, shost_data = 0xffff8808513e3008, dma_dev = 0xffff881053a92328, hostdata = 0xffff8808513a4950 } crash> list scsi_device.siblings -H 0xffff8808513a4290 -s scsi_device ffff880851232520 struct scsi_device { host = 0xffff8808513a4290, request_queue = 0xffff88085107ad78, siblings = { next = 0xffff880851235398, prev = 0xffff8808513a4290 }, same_target_siblings = { next = 0xffff881054377990, prev = 0xffff881054377990 }, device_busy = 0x0, list_lock = { { rlock = { raw_lock = { { head_tail = 0x2626, tickets = { head = 0x26, tail = 0x26 } } } } } }, cmd_list = { next = 0xffff880851232558, prev = 0xffff880851232558 }, starved_entry = { next = 0xdead000000100100, prev = 0xdead000000200200 }, current_cmnd = 0x0, queue_depth = 0xfe, max_queue_depth = 0xfe, last_queue_full_depth = 0x0, last_queue_full_count = 0x0, last_queue_full_time = 0x0, queue_ramp_up_period = 0x1d4c0, last_queue_ramp_up = 0x0, id = 0x0, lun = 0x0, channel = 0x0, manufacturer = 0x0, sector_size = 0x200, hostdata = 0x0, type = 0x0, scsi_level = 0x7, inq_periph_qual = 0x0, inquiry_len = 0x90, inquiry = 0xffff88084ec2e8a0 "", vendor = 0xffff88084ec2e8a8 "SEAGATE ST9300653SS 00026XN020GG", model = 0xffff88084ec2e8b0 "ST9300653SS 00026XN020GG", rev = 0xffff88084ec2e8c0 "00026XN020GG", current_tag = 0x0, sdev_target = 0xffff881054377978, sdev_bflags = 0x0, writeable = 0x1, removable = 0x0, changed = 0x0, busy = 0x0, lockable = 0x0, locked = 0x0, borken = 0x0, disconnect = 0x0, soft_reset = 0x0, sdtr = 0x0, wdtr = 0x0, ppr = 0x1, tagged_supported = 0x1, simple_tags = 0x0, ordered_tags = 0x0, was_reset = 0x0, expecting_cc_ua = 0x0, use_10_for_rw = 0x1, use_10_for_ms = 0x0, no_report_opcodes = 0x0, no_write_same = 0x0, use_16_for_rw = 0x0, skip_ms_page_8 = 0x0, skip_ms_page_3f = 0x0, skip_vpd_pages = 0x0, use_192_bytes_for_3f = 0x0, no_start_on_add = 0x0, allow_restart = 0x0, manage_start_stop = 0x0, start_stop_pwr_cond = 0x0, no_uld_attach = 0x0, select_no_atn = 0x0, fix_capacity = 0x0, guess_capacity = 0x0, retry_hwerror = 0x0, last_sector_bug = 0x0, no_read_disc_info = 0x0, no_read_capacity_16 = 0x0, try_rc_10_first = 0x0, is_visible = 0x1, can_power_off = 0x0, wce_default_on = 0x0, no_dif = 0x0, supported_events = {0x0}, event_list = { next = 0xffff880851232610, prev = 0xffff880851232610 }, event_work = { data = { counter = 0x10200 }, entry = { next = 0xffff880851232628, prev = 0xffff880851232628 }, func = 0xffffffff81426020 <scsi_evt_thread> }, device_blocked = 0x0, max_device_blocked = 0x3, iorequest_cnt = { counter = 0x1313 }, iodone_cnt = { counter = 0x1313 }, ioerr_cnt = { counter = 0x0 }, sdev_gendev = { parent = 0xffff8810543779a0, p = 0xffff88084edab6d8, kobj = { name = 0xffff88084ec48540 "0:0:0:0", entry = { next = 0xffff880851232670, prev = 0xffff880851232670 }, parent = 0x0, kset = 0xffff88085f878b98, ktype = 0xffffffff81c92240, sd = 0x0, kref = { refcount = { counter = 0x2 } }, state_initialized = 0x1, state_in_sysfs = 0x0, state_add_uevent_sent = 0x1, state_remove_uevent_sent = 0x1, uevent_suppress = 0x0 }, init_name = 0x0, type = 0xffffffff81c95ac0, mutex = { count = { counter = 0x1 }, wait_lock = { { rlock = { raw_lock = { { head_tail = 0x0, tickets = { head = 0x0, tail = 0x0 } } } } } }, wait_list = { next = 0xffff8808512326c0, prev = 0xffff8808512326c0 }, owner = 0x0 }, bus = 0xffffffff81c95960, driver = 0x0, platform_data = 0x0, power = { power_state = { event = 0xffffffff }, can_wakeup = 0x0, async_suspend = 0x1, is_prepared = 0x0, is_suspended = 0x0, ignore_children = 0x0, early_init = 0x1, lock = { { rlock = { raw_lock = { { head_tail = 0x2b2b, tickets = { head = 0x2b, tail = 0x2b } } } } } }, entry = { next = 0xffff8808512326f8, prev = 0xffff8808512326f8 }, completion = { done = 0xfffffffe, wait = { lock = { { rlock = { raw_lock = { { head_tail = 0x202, tickets = { head = 0x2, tail = 0x2 } } } } } }, task_list = { next = 0xffff880851232718, prev = 0xffff880851232718 } } }, wakeup = 0x0, wakeup_path = 0x0, syscore = 0x0, suspend_timer = { entry = { next = 0x0, prev = 0x0 }, expires = 0x0, base = 0xffff8808546f4000, function = 0xffffffff814092d0 <pm_suspend_timer_fn>, data = 0xffff880851232658, slack = 0xffffffff, start_pid = 0xffffffff, start_site = 0x0, start_comm = "\000\000\000\000\000\000\000\000\000\000\000\000\000\000\000" }, timer_expires = 0x0, work = { data = { counter = 0x10200 }, entry = { next = 0xffff880851232798, prev = 0xffff880851232798 }, func = 0xffffffff8140a6b0 <pm_runtime_work> }, wait_queue = { lock = { { rlock = { raw_lock = { { head_tail = 0x0, tickets = { head = 0x0, tail = 0x0 } } } } } }, task_list = { next = 0xffff8808512327b8, prev = 0xffff8808512327b8 } }, usage_count = { counter = 0x3 }, child_count = { counter = 0x0 }, disable_depth = 0x1, idle_notification = 0x0, request_pending = 0x0, deferred_resume = 0x0, run_wake = 0x0, runtime_auto = 0x0, no_callbacks = 0x0, irq_safe = 0x0, use_autosuspend = 0x0, timer_autosuspends = 0x0, request = RPM_REQ_NONE, runtime_status = RPM_SUSPENDED, runtime_error = 0x0, autosuspend_delay = 0x0, last_busy = 0x0, active_jiffies = 0x0, suspended_jiffies = 0x0, accounting_timestamp = 0xfffd24fd, subsys_data = 0x0, qos = 0x0 }, pm_domain = 0x0, numa_node = 0xffffffff, dma_mask = 0x0, coherent_dma_mask = 0x0, dma_parms = 0x0, dma_pools = { next = 0xffff880851232840, prev = 0xffff880851232840 }, dma_mem = 0x0, archdata = { dma_ops = 0x0, iommu = 0x0 }, of_node = 0x0, acpi_node = { handle = 0x0 }, devt = 0x0, id = 0x0, devres_lock = { { rlock = { raw_lock = { { head_tail = 0x202, tickets = { head = 0x2, tail = 0x2 } } } } } }, devres_head = { next = 0xffff880851232888, prev = 0xffff880851232888 }, knode_class = { n_klist = 0x0, n_node = { next = 0x0, prev = 0x0 }, n_ref = { refcount = { counter = 0x0 } } }, class = 0x0, groups = 0x0, release = 0, iommu_group = 0x0 }, sdev_dev = { parent = 0xffff880851232658, p = 0xffff88084edab2c8, kobj = { name = 0xffff88084ec48a80 "kkkkkkk\245\273\273\273\273\273\273\273\273p\216\304N\b\210\377\377\261\222\060\201\377\377\377\377y\216e\201\377\377\377\377?\356\030\201\377\377\377\377{U1\201\377\377\377\377\261\222\060\201\377\377\377\377\241\221?\201\377\377\377\377\250\245B\201\377\377\377\377\256fB\201\377\377\377\377\247kB\201\377\377\377\377\201{B\201\377\377\377\377", entry = { next = 0xffff8808512328f0, prev = 0xffff8808512328f0 }, parent = 0x0, kset = 0xffff88085f878b98, ktype = 0xffffffff81c92240, sd = 0x0, kref = { refcount = { counter = 0x0 } }, state_initialized = 0x1, state_in_sysfs = 0x0, state_add_uevent_sent = 0x1, state_remove_uevent_sent = 0x1, uevent_suppress = 0x0 }, init_name = 0x0, type = 0x0, mutex = { count = { counter = 0x1 }, wait_lock = { { rlock = { raw_lock = { { head_tail = 0x0, tickets = { head = 0x0, tail = 0x0 } } } } } }, wait_list = { next = 0xffff880851232940, prev = 0xffff880851232940 }, owner = 0x0 }, bus = 0x0, driver = 0x0, platform_data = 0x0, power = { power_state = { event = 0xffffffff }, can_wakeup = 0x0, async_suspend = 0x1, is_prepared = 0x0, is_suspended = 0x0, ignore_children = 0x0, early_init = 0x1, lock = { { rlock = { raw_lock = { { head_tail = 0x101, tickets = { head = 0x1, tail = 0x1 } } } } } }, entry = { next = 0xffff880851232978, prev = 0xffff880851232978 }, completion = { done = 0xfffffffe, wait = { lock = { { rlock = { raw_lock = { { head_tail = 0x202, tickets = { head = 0x2, tail = 0x2 } } } } } }, task_list = { next = 0xffff880851232998, prev = 0xffff880851232998 } } }, wakeup = 0x0, wakeup_path = 0x0, syscore = 0x0, suspend_timer = { entry = { next = 0x0, prev = 0x0 }, expires = 0x0, base = 0xffff8808546f4000, function = 0xffffffff814092d0 <pm_suspend_timer_fn>, data = 0xffff8808512328d8, slack = 0xffffffff, start_pid = 0xffffffff, start_site = 0x0, start_comm = "\000\000\000\000\000\000\000\000\000\000\000\000\000\000\000" }, timer_expires = 0x0, work = { data = { counter = 0x10200 }, entry = { next = 0xffff880851232a18, prev = 0xffff880851232a18 }, func = 0xffffffff8140a6b0 <pm_runtime_work> }, wait_queue = { lock = { { rlock = { raw_lock = { { head_tail = 0x0, tickets = { head = 0x0, tail = 0x0 } } } } } }, task_list = { next = 0xffff880851232a38, prev = 0xffff880851232a38 } }, usage_count = { counter = 0x0 }, child_count = { counter = 0x0 }, disable_depth = 0x2, idle_notification = 0x0, request_pending = 0x0, deferred_resume = 0x0, run_wake = 0x0, runtime_auto = 0x1, no_callbacks = 0x0, irq_safe = 0x0, use_autosuspend = 0x0, timer_autosuspends = 0x0, request = RPM_REQ_NONE, runtime_status = RPM_SUSPENDED, runtime_error = 0x0, autosuspend_delay = 0x0, last_busy = 0x0, active_jiffies = 0x0, suspended_jiffies = 0x0, accounting_timestamp = 0xfffb8e97, subsys_data = 0x0, qos = 0x0 }, pm_domain = 0x0, numa_node = 0xffffffff, dma_mask = 0x0, coherent_dma_mask = 0x0, dma_parms = 0x0, dma_pools = { next = 0xffff880851232ac0, prev = 0xffff880851232ac0 }, dma_mem = 0x0, archdata = { dma_ops = 0x0, iommu = 0x0 }, of_node = 0x0, acpi_node = { handle = 0x0 }, devt = 0x0, id = 0x0, devres_lock = { { rlock = { raw_lock = { { head_tail = 0x101, tickets = { head = 0x1, tail = 0x1 } } } } } }, devres_head = { next = 0xffff880851232b08, prev = 0xffff880851232b08 }, knode_class = { n_klist = 0x0, n_node = { next = 0xdead000000100100, prev = 0xdead000000200200 }, n_ref = { refcount = { counter = 0x0 } } }, class = 0xffffffff81c95a40, groups = 0x0, release = 0, iommu_group = 0x0 }, ew = { work = { data = { counter = 0x0 }, entry = { next = 0x0, prev = 0x0 }, func = 0 } }, requeue_work = { data = { counter = 0x10200 }, entry = { next = 0xffff880851232b80, prev = 0xffff880851232b80 }, func = 0xffffffff814257c0 <scsi_requeue_run_queue> }, scsi_dh_data = 0x0, sdev_state = SDEV_DEL, sdev_data = 0xffff880851232ba8 } ffff880851235388 struct scsi_device { host = 0xffff8808513a4290, request_queue = 0xffff88085107b690, siblings = { next = 0xffff8808513a4290, prev = 0xffff880851232530 }, same_target_siblings = { next = 0xffff88084ed99538, prev = 0xffff88084ed99538 }, device_busy = 0x0, list_lock = { { rlock = { raw_lock = { { head_tail = 0x3636, tickets = { head = 0x36, tail = 0x36 } } } } } }, cmd_list = { next = 0xffff8808512353c0, prev = 0xffff8808512353c0 }, starved_entry = { next = 0xdead000000100100, prev = 0xdead000000200200 }, current_cmnd = 0x0, queue_depth = 0xfe, max_queue_depth = 0xfe, last_queue_full_depth = 0x0, last_queue_full_count = 0x0, last_queue_full_time = 0x0, queue_ramp_up_period = 0x1d4c0, last_queue_ramp_up = 0x0, id = 0x1, lun = 0x0, channel = 0x0, manufacturer = 0x0, sector_size = 0x200, hostdata = 0x0, type = 0x0, scsi_level = 0x7, inq_periph_qual = 0x0, inquiry_len = 0x90, inquiry = 0xffff88084eda8410 "", vendor = 0xffff88084eda8418 "SEAGATE ST9146853SS 00026XM02L18", model = 0xffff88084eda8420 "ST9146853SS 00026XM02L18", rev = 0xffff88084eda8430 "00026XM02L18", current_tag = 0x0, sdev_target = 0xffff88084ed99520, sdev_bflags = 0x0, writeable = 0x1, removable = 0x0, changed = 0x0, busy = 0x0, lockable = 0x0, locked = 0x0, borken = 0x0, disconnect = 0x0, soft_reset = 0x0, sdtr = 0x0, wdtr = 0x0, ppr = 0x1, tagged_supported = 0x1, simple_tags = 0x0, ordered_tags = 0x0, was_reset = 0x0, expecting_cc_ua = 0x0, use_10_for_rw = 0x1, use_10_for_ms = 0x0, no_report_opcodes = 0x0, no_write_same = 0x0, use_16_for_rw = 0x0, skip_ms_page_8 = 0x0, skip_ms_page_3f = 0x0, skip_vpd_pages = 0x0, use_192_bytes_for_3f = 0x0, no_start_on_add = 0x0, allow_restart = 0x0, manage_start_stop = 0x0, start_stop_pwr_cond = 0x0, no_uld_attach = 0x0, select_no_atn = 0x0, fix_capacity = 0x0, guess_capacity = 0x0, retry_hwerror = 0x0, last_sector_bug = 0x0, no_read_disc_info = 0x0, no_read_capacity_16 = 0x0, try_rc_10_first = 0x0, is_visible = 0x1, can_power_off = 0x0, wce_default_on = 0x0, no_dif = 0x0, supported_events = {0x0}, event_list = { next = 0xffff880851235478, prev = 0xffff880851235478 }, event_work = { data = { counter = 0x10200 }, entry = { next = 0xffff880851235490, prev = 0xffff880851235490 }, func = 0xffffffff81426020 <scsi_evt_thread> }, device_blocked = 0x0, max_device_blocked = 0x3, iorequest_cnt = { counter = 0x21b }, iodone_cnt = { counter = 0x21b }, ioerr_cnt = { counter = 0x0 }, sdev_gendev = { parent = 0xffff88084ed99548, p = 0xffff88084eda8e38, kobj = { name = 0xffff88084eda0540 "0:0:1:0", entry = { next = 0xffff8808512354d8, prev = 0xffff8808512354d8 }, parent = 0x0, kset = 0xffff88085f878b98, ktype = 0xffffffff81c92240, sd = 0x0, kref = { refcount = { counter = 0x2 } }, state_initialized = 0x1, state_in_sysfs = 0x0, state_add_uevent_sent = 0x1, state_remove_uevent_sent = 0x1, uevent_suppress = 0x0 }, init_name = 0x0, type = 0xffffffff81c95ac0, mutex = { count = { counter = 0x1 }, wait_lock = { { rlock = { raw_lock = { { head_tail = 0x0, tickets = { head = 0x0, tail = 0x0 } } } } } }, wait_list = { next = 0xffff880851235528, prev = 0xffff880851235528 }, owner = 0x0 }, bus = 0xffffffff81c95960, driver = 0x0, platform_data = 0x0, power = { power_state = { event = 0xffffffff }, can_wakeup = 0x0, async_suspend = 0x1, is_prepared = 0x0, is_suspended = 0x0, ignore_children = 0x0, early_init = 0x1, lock = { { rlock = { raw_lock = { { head_tail = 0xc4c4, tickets = { head = 0xc4, tail = 0xc4 } } } } } }, entry = { next = 0xffff880851235560, prev = 0xffff880851235560 }, completion = { done = 0xfffffffe, wait = { lock = { { rlock = { raw_lock = { { head_tail = 0x202, tickets = { head = 0x2, tail = 0x2 } } } } } }, task_list = { next = 0xffff880851235580, prev = 0xffff880851235580 } } }, wakeup = 0x0, wakeup_path = 0x0, syscore = 0x0, suspend_timer = { entry = { next = 0x0, prev = 0x0 }, expires = 0x0, base = 0xffff8808546f4000, function = 0xffffffff814092d0 <pm_suspend_timer_fn>, data = 0xffff8808512354c0, slack = 0xffffffff, start_pid = 0xffffffff, start_site = 0x0, start_comm = "\000\000\000\000\000\000\000\000\000\000\000\000\000\000\000" }, timer_expires = 0x0, work = { data = { counter = 0x10200 }, entry = { next = 0xffff880851235600, prev = 0xffff880851235600 }, func = 0xffffffff8140a6b0 <pm_runtime_work> }, wait_queue = { lock = { { rlock = { raw_lock = { { head_tail = 0x0, tickets = { head = 0x0, tail = 0x0 } } } } } }, task_list = { next = 0xffff880851235620, prev = 0xffff880851235620 } }, usage_count = { counter = 0x3 }, child_count = { counter = 0x0 }, disable_depth = 0x1, idle_notification = 0x0, request_pending = 0x0, deferred_resume = 0x0, run_wake = 0x0, runtime_auto = 0x0, no_callbacks = 0x0, irq_safe = 0x0, use_autosuspend = 0x0, timer_autosuspends = 0x0, request = RPM_REQ_NONE, runtime_status = RPM_SUSPENDED, runtime_error = 0x0, autosuspend_delay = 0x0, last_busy = 0x0, active_jiffies = 0x0, suspended_jiffies = 0x0, accounting_timestamp = 0xfffd2515, subsys_data = 0x0, qos = 0x0 }, pm_domain = 0x0, numa_node = 0xffffffff, dma_mask = 0x0, coherent_dma_mask = 0x0, dma_parms = 0x0, dma_pools = { next = 0xffff8808512356a8, prev = 0xffff8808512356a8 }, dma_mem = 0x0, archdata = { dma_ops = 0x0, iommu = 0x0 }, of_node = 0x0, acpi_node = { handle = 0x0 }, devt = 0x0, id = 0x0, devres_lock = { { rlock = { raw_lock = { { head_tail = 0x202, tickets = { head = 0x2, tail = 0x2 } } } } } }, devres_head = { next = 0xffff8808512356f0, prev = 0xffff8808512356f0 }, knode_class = { n_klist = 0x0, n_node = { next = 0x0, prev = 0x0 }, n_ref = { refcount = { counter = 0x0 } } }, class = 0x0, groups = 0x0, release = 0, iommu_group = 0x0 }, sdev_dev = { parent = 0xffff8808512354c0, p = 0xffff88084eda9248, kobj = { name = 0xffff88084eda3870 "kkkkkkk\245\273\273\273\273\273\273\273\273\060\063\332N\b\210\377\377\261\222\060\201\377\377\377\377y\216e\201\377\377\377\377?\356\030\201\377\377\377\377{U1\201\377\377\377\377\261\222\060\201\377\377\377\377\241\221?\201\377\377\377\377\250\245B\201\377\377\377\377\256fB\201\377\377\377\377\247kB\201\377\377\377\377\201{B\201\377\377\377\377", entry = { next = 0xffff880851235758, prev = 0xffff880851235758 }, parent = 0x0, kset = 0xffff88085f878b98, ktype = 0xffffffff81c92240, sd = 0x0, kref = { refcount = { counter = 0x0 } }, state_initialized = 0x1, state_in_sysfs = 0x0, state_add_uevent_sent = 0x1, state_remove_uevent_sent = 0x1, uevent_suppress = 0x0 }, init_name = 0x0, type = 0x0, mutex = { count = { counter = 0x1 }, wait_lock = { { rlock = { raw_lock = { { head_tail = 0x0, tickets = { head = 0x0, tail = 0x0 } } } } } }, wait_list = { next = 0xffff8808512357a8, prev = 0xffff8808512357a8 }, owner = 0x0 }, bus = 0x0, driver = 0x0, platform_data = 0x0, power = { power_state = { event = 0xffffffff }, can_wakeup = 0x0, async_suspend = 0x1, is_prepared = 0x0, is_suspended = 0x0, ignore_children = 0x0, early_init = 0x1, lock = { { rlock = { raw_lock = { { head_tail = 0x101, tickets = { head = 0x1, tail = 0x1 } } } } } }, entry = { next = 0xffff8808512357e0, prev = 0xffff8808512357e0 }, completion = { done = 0xfffffffe, wait = { lock = { { rlock = { raw_lock = { { head_tail = 0x202, tickets = { head = 0x2, tail = 0x2 } } } } } }, task_list = { next = 0xffff880851235800, prev = 0xffff880851235800 } } }, wakeup = 0x0, wakeup_path = 0x0, syscore = 0x0, suspend_timer = { entry = { next = 0x0, prev = 0x0 }, expires = 0x0, base = 0xffff8808546f4000, function = 0xffffffff814092d0 <pm_suspend_timer_fn>, data = 0xffff880851235740, slack = 0xffffffff, start_pid = 0xffffffff, start_site = 0x0, start_comm = "\000\000\000\000\000\000\000\000\000\000\000\000\000\000\000" }, timer_expires = 0x0, work = { data = { counter = 0x10200 }, entry = { next = 0xffff880851235880, prev = 0xffff880851235880 }, func = 0xffffffff8140a6b0 <pm_runtime_work> }, wait_queue = { lock = { { rlock = { raw_lock = { { head_tail = 0x0, tickets = { head = 0x0, tail = 0x0 } } } } } }, task_list = { next = 0xffff8808512358a0, prev = 0xffff8808512358a0 } }, usage_count = { counter = 0x0 }, child_count = { counter = 0x0 }, disable_depth = 0x2, idle_notification = 0x0, request_pending = 0x0, deferred_resume = 0x0, run_wake = 0x0, runtime_auto = 0x1, no_callbacks = 0x0, irq_safe = 0x0, use_autosuspend = 0x0, timer_autosuspends = 0x0, request = RPM_REQ_NONE, runtime_status = RPM_SUSPENDED, runtime_error = 0x0, autosuspend_delay = 0x0, last_busy = 0x0, active_jiffies = 0x0, suspended_jiffies = 0x0, accounting_timestamp = 0xfffb8e9a, subsys_data = 0x0, qos = 0x0 }, pm_domain = 0x0, numa_node = 0xffffffff, dma_mask = 0x0, coherent_dma_mask = 0x0, dma_parms = 0x0, dma_pools = { next = 0xffff880851235928, prev = 0xffff880851235928 }, dma_mem = 0x0, archdata = { dma_ops = 0x0, iommu = 0x0 }, of_node = 0x0, acpi_node = { handle = 0x0 }, devt = 0x0, id = 0x0, devres_lock = { { rlock = { raw_lock = { { head_tail = 0x101, tickets = { head = 0x1, tail = 0x1 } } } } } }, devres_head = { next = 0xffff880851235970, prev = 0xffff880851235970 }, knode_class = { n_klist = 0x0, n_node = { next = 0xdead000000100100, prev = 0xdead000000200200 }, n_ref = { refcount = { counter = 0x0 } } }, class = 0xffffffff81c95a40, groups = 0x0, release = 0, iommu_group = 0x0 }, ew = { work = { data = { counter = 0x0 }, entry = { next = 0x0, prev = 0x0 }, func = 0 } }, requeue_work = { data = { counter = 0x10200 }, entry = { next = 0xffff8808512359e8, prev = 0xffff8808512359e8 }, func = 0xffffffff814257c0 <scsi_requeue_run_queue> }, scsi_dh_data = 0x0, sdev_state = SDEV_DEL, sdev_data = 0xffff880851235a10 } -- To unsubscribe from this list: 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
