> I wonder if we are preventing scsi_device_dev_release_usercontext() from
> making forward progress?
>
> ...the attached patch should confirm this or give more info otherwise.
>
[ 148.960318] console [netcon0] enabled
[ 148.960363] netconsole: network logging started
[ 170.415487] mptbase: ioc0: LogInfo(0x31110d00): Originator={PL},
Code={Reset}, SubCode(0x0d00) cb_idx mptbase_reply
[ 174.739904] mptbase: ioc0: LogInfo(0x31110d00): Originator={PL},
Code={Reset}, SubCode(0x0d00) cb_idx mptscsih_io_done
[ 174.747449] sd 0:0:0:0: [sda] Synchronizing SCSI cache
[ 174.747520] sd 0:0:0:0: [sda] Unhandled error code
[ 174.747566] sd 0:0:0:0: [sda]
[ 174.747586] sd 0:0:0:0: [sda]
[ 174.747587] Result: hostbyte=DID_NO_CONNECT driverbyte=DRIVER_OK
[ 174.747746] Result: hostbyte=DID_NO_CONNECT driverbyte=DRIVER_OK
[ 174.747841] scsi 0:0:0:0: [sda] CDB:
[ 174.747931] Read(10): 28 00 00 20 ec 08 00 00 08 00
[ 174.748375] end_request: I/O error, dev sda, sector 2157576
[ 174.751387] md/raid1:md0: Disk failure on sda1, disabling device.
[ 174.751387] md/raid1:md0: Operation continuing on 9 devices.
[ 174.751448] md/raid:md1: Disk failure on sda2, disabling device.
[ 174.751448] md/raid:md1: Operation continuing on 11 devices.
[ 174.758218] scsi_remove_target[0]: reap 0:0 state: 2 reap: 1 dev_del: 1
[ 199.724758] BUG: soft lockup - CPU#2 stuck for 23s! [kworker/u:8:2202]
[ 199.724855] Modules linked in: netconsole configfs w83627ehf
hwmon_vid autofs4 coretemp hwmon kvm_intel kvm i2c_i801 i2c_core
pcspkr e1000e microcode lpc_ich mfd_core video button xts gf128mul
aes_x86_64 aes_generic cbc sha256_generic e1000 nfs lockd fscache
auth_rpcgss nfs_acl sunrpc reiserfs multipath linear raid0 dm_raid
dm_snapshot dm_crypt dm_mirror dm_region_hash dm_log scsi_wait_scan
sl811_hcd ohci_hcd uhci_hcd usb_storage ehci_hcd megaraid_sas
megaraid_mbox megaraid_mm megaraid sr_mod cdrom sd_mod sata_mv
ata_piix ahci libahci pata_marvell pata_mpiix libata
[ 199.727536] CPU 2
[ 199.727576] Modules linked in:[ 199.727699] netconsole configfs
w83627ehf hwmon_vid autofs4 coretemp hwmon kvm_intel kvm i2c_i801
i2c_core pcspkr e1000e microcode lpc_ich mfd_core video button xts
gf128mul aes_x86_64 aes_generic cbc sha256_generic e1000 nfs lockd
fscache auth_rpcgss nfs_acl sunrpc reiserfs multipath linear raid0
dm_raid dm_snapshot dm_crypt dm_mirror dm_region_hash dm_log
scsi_wait_scan sl811_hcd ohci_hcd uhci_hcd usb_storage ehci_hcd
megaraid_sas megaraid_mbox megaraid_mm megaraid sr_mod cdrom sd_mod
sata_mv ata_piix ahci libahci[ 199.731316] R10: 0000000000000001 R11:
0000000000000000 R12: ffff8802222bc460
ffff8802230e0400 ffff8802232df010
[ 199.732875] ffff880222defb00 ffffffff81417974 ffff880200000001
ffff880200000001
[ 199.733164] Call Trace:
[ 199.733255] [<ffffffff8141503d>] scsi_target_reap+0x7d/0x100
[ 199.733355] [<ffffffff81417974>] scsi_remove_target+0x224/0x300
[ 199.733455] [<ffffffff81421ef5>] sas_rphy_remove+0x55/0x60
[ 199.733554] [<ffffffff81421f11>] sas_rphy_delete+0x11/0x20
[ 199.733652] [<ffffffff81421f45>] sas_port_delete+0x25/0x160
[ 199.733749] [<ffffffff81454ab3>] mptsas_del_end_device+0x183/0x270
[ 199.733848] [<ffffffff81458f6c>] mptsas_hotplug_work+0x1ec/0x920
[ 199.733945] [<ffffffff814531fb>] ? mptsas_free_fw_event+0x6b/0xb0
[ 199.734042] [<ffffffff81061e95>] ? sched_clock_cpu+0xc5/0x120
[ 199.734138] [<ffffffff8145a760>] mptsas_firmware_event_work+0xbc0/0xfa0
[ 199.734238] [<ffffffff81080d0f>] ? __lock_acquire.isra.27+0x29f/0xb30
[ 199.734335] [<ffffffff81459ba0>] ? mptsas_expander_add+0x140/0x140
[ 199.734433] [<ffffffff81459ba0>] ? mptsas_expander_add+0x140/0x140
[ 199.734534] [<ffffffff8104c474>] process_one_work+0x184/0x460
[ 199.734632] [<ffffffff8104c416>] ? process_one_work+0x126/0x460
[ 199.734731] [<ffffffff8104cd4e>] worker_thread+0x15e/0x350
[ 199.734830] [<ffffffff8104cbf0>] ? manage_workers.isra.31+0x220/0x220
[ 199.734930] [<ffffffff81051f9d>] kthread+0x9d/0xb0
[ 199.735028] [<ffffffff815cfdd4>] kernel_thread_helper+0x4/0x10
[ 199.735127] [<ffffffff81051f00>] ? __init_kthread_worker+0x70/0x70
[ 199.735224] [<ffffffff815cfdd0>] ? gs_change+0xb/0xb
[ 199.735317] Code: 10 48 8b 55 08 48 89 5d f0 48 89 f3 4c 89 65 f8
be 01 00 00 00 49
--
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
