Hi!
I can reliably trigger the following warning by physically detaching my disk
array after
stopping md1.
---cut---
[ 149.780554] md: md1 stopped.
[ 149.780559] md: unbind
[ 149.782025] md: export_rdev(sdh1)
[ 149.782039] md: unbind
[ 149.786026] md: export_rdev(sdg1)
[ 149.786038] md: unbind
[ 149.786122] md: export_rdev(sdf1)
[ 149.786135] md: unbind
[ 149.786220] md: export_rdev(sde1)
[ 149.786232] md: unbind
[ 149.786320] md: export_rdev(sdd1)
[ 149.786332] md: unbind
[ 149.786414] md: export_rdev(sdc1)
[ 162.884735] sd 6:0:1:0: [sdc] Synchronizing SCSI cache
[ 162.884778] sd 6:0:1:0: [sdc]
[ 162.884781] Result: hostbyte=DID_NO_CONNECT driverbyte=DRIVER_OK
[ 162.885424] mpt2sas0: removing handle(0x000b), sas_addr(0x5003048001804ded)
[ 162.887671] sd 6:0:2:0: [sdd] Synchronizing SCSI cache
[ 162.887715] sd 6:0:2:0: [sdd]
[ 162.887719] Result: hostbyte=DID_NO_CONNECT driverbyte=DRIVER_OK
[ 162.888733] mpt2sas0: removing handle(0x000c), sas_addr(0x5003048001804dee)
[ 162.890003] sd 6:0:3:0: [sde] Synchronizing SCSI cache
[ 162.890041] sd 6:0:3:0: [sde]
[ 162.890044] Result: hostbyte=DID_NO_CONNECT driverbyte=DRIVER_OK
[ 162.890676] mpt2sas0: removing handle(0x000d), sas_addr(0x5003048001804df0)
[ 162.891345] sd 6:0:4:0: [sdf] Synchronizing SCSI cache
[ 162.891383] sd 6:0:4:0: [sdf]
[ 162.891385] Result: hostbyte=DID_NO_CONNECT driverbyte=DRIVER_OK
[ 162.892590] mpt2sas0: removing handle(0x000e), sas_addr(0x5003048001804df1)
[ 162.896152] sd 6:0:5:0: [sdg] Synchronizing SCSI cache
[ 162.896197] sd 6:0:5:0: [sdg]
[ 162.896201] Result: hostbyte=DID_NO_CONNECT driverbyte=DRIVER_OK
[ 162.896891] mpt2sas0: removing handle(0x000f), sas_addr(0x5003048001804df4)
[ 162.896896] mpt2sas0: removing handle(0x000a), sas_addr(0x5003048001804dfd)
[ 162.896899] mpt2sas0: removing handle(0x0010), sas_addr(0x5003048001804df7)
[ 162.898097] [ cut here ]
[ 162.898105] WARNING: at /home/abuild/rpmbuild/BUILD/kernel-vanilla-3.6.2/linux-3.6/fs/sysfs/inode.c:324
sysfs_hash_and_remove+0xa9/0xb0()
[ 162.898107] Hardware name: X9SCL/X9SCM
[ 162.898108] sysfs: can not remove 'device', no directory
[ 162.898110] Modules linked in: ses enclosure cpufreq_conservative cpufreq_userspace cpufreq_powersave acpi_cpufreq
mperf coretemp crc32c_intel ghash_clmulni_intel i2c_i801 iTCO_wdt kvm_intel sg iTCO_vendor_support e1000e lpc_ich
mfd_core serio_raw joydev sr_mod kvm aesni_intel button cdrom ablk_helper cryptd video aes_x86_64 pcspkr microcode
autofs4 raid456 async_raid6_recov async_pq raid6_pq async_xor xor async_memcpy async_tx raid10 raid1 hid_generic usbhid
raid0 mgag200 ttm drm_kms_helper drm ehci_hcd i2c_algo_bit sysimgblt sysfillrect syscopyarea usbcore usb_common thermal
fan processor thermal_sys scsi_dh_emc scsi_dh_rdac scsi_dh_alua scsi_dh_hp_sw scsi_dh mpt2sas scsi_transport_sas raid_class
[ 162.898159] Pid: 84, comm: kworker/u:7 Not tainted 3.6.2-7-vanilla #1
[ 162.898161] Call Trace:
[ 162.898166] [] ? sysfs_hash_and_remove+0xa0/0xb0
[ 162.898172] [] warn_slowpath_common+0x7a/0xb0
[ 162.898176] [] warn_slowpath_fmt+0x41/0x50
[ 162.898180] [] sysfs_hash_and_remove+0xa9/0xb0
[ 162.898184] [] sysfs_remove_link+0x21/0x30
[ 162.898189] [] enclosure_remove_links+0x68/0x80
[enclosure]
[ 162.898192] [] ? remove_dir+0x2e/0x40
[ 162.898196] [] enclosure_component_release+0x1f/0x40
[enclosure]
[ 162.898200] [] device_release+0x22/0x90
[ 162.898205] [] kobject_cleanup+0x82/0x1b0
[ 162.898209] [] kobject_put+0x2b/0x60
[ 162.898212] [] put_device+0x12/0x20
[ 162.898215] [] device_unregister+0x25/0x60
[ 162.898218] [] enclosure_unregister+0x82/0xb0 [enclosure]
[ 162.898222] [] ses_intf_remove+0x7d/0xe0 [ses]
[ 162.898226] [] device_del+0xc9/0x1b0
[ 162.898230] [] device_unregister+0x1d/0x60
[ 162.898236] [] __scsi_remove_device+0xa5/0xc0
[ 162.898241] [] scsi_remove_device+0x2a/0x40
[ 162.898246] [] scsi_remove_target+0x148/0x200
[ 162.898256] [] sas_rphy_remove+0x55/0x60
[scsi_transport_sas]
[ 162.898264] [] sas_rphy_delete+0x11/0x20
[scsi_transport_sas]
[ 162.898273] [] sas_port_delete+0x25/0x130
[scsi_transport_sas]
[ 162.898281] [] ? sas_port_delete+0x130/0x130
[scsi_transport_sas]
[ 162.898290] [] do_sas_phy_delete+0x45/0x50
[scsi_transport_sas]
[ 162.898294] [] device_for_each_child+0x36/0x70
[ 162.898302] [] sas_remove_children+0x1a/0x40
[scsi_transport_sas]
[ 162.898310] [] sas_rphy_remove+0x4a/0x60
[scsi_transport_sas]
[ 162.898318] [] sas_rphy_delete+0x11/0x20
[scsi_transport_sas]
[ 162.898325] [] sas_port_delete+0x25/0x130
[scsi_transport_sas]
[ 162.898337] [] mpt2sas_transport_port_remove+0x1b9/0x1d0
[mpt2sas]
[ 162.898348] [] _scsih_expander_node_remove+0x80/0xc0
[mpt2sas]
[ 162.898357] [] mpt2sas_expander_remove+0xcc/0xe0 [mpt2sas]
[ 162.898367] [] _firmware_event_work+0x11e7/0x14b0
[mpt2sas]
[ 162.898372] [] ? cwq_activate_delayed_work+0x38/0x80
[ 162.898376] [] proc
