I've got a disk box with a SAS expander connected to a card based on the
LSI SAS1068E chip. I recently upgraded the machine from 4.5.7 to 4.11.5,
and now disconnecting (i.e. hot removing) the SAS expander from the HBA
results in fireworks like this:
[ 4738.044119] end_device-6:0:0: mptsas: ioc2: removing sata device:
fw_channel 0, fw_id 8, phy 0,sas_addr 0x500194752200
[ 4738.044126] phy-6:0:8: mptsas: ioc2: delete phy 0, phy-obj
(0x883f21a80c00)
[ 4738.044143] port-6:0:0: mptsas: ioc2: delete port 0, sas_addr
(0x500194752200)
[ 4738.051435] end_device-6:0:3: mptsas: ioc2: removing ssp device: fw_channel
0, fw_id 13, phy 5,sas_addr 0x5000c5000184240d
[ 4738.051442] phy-6:0:13: mptsas: ioc2: delete phy 5, phy-obj
(0x883f21a86c00)
[ 4738.051456] port-6:0:3: mptsas: ioc2: delete port 3, sas_addr
(0x5000c5000184240d)
[ 4738.054796] end_device-6:0:2: mptsas: ioc2: removing sata device:
fw_channel 0, fw_id 12, phy 4,sas_addr 0x500194752204
[ 4738.054801] phy-6:0:12: mptsas: ioc2: delete phy 4, phy-obj
(0x883f21a85400)
[ 4738.054814] port-6:0:2: mptsas: ioc2: delete port 2, sas_addr
(0x500194752204)
[ 4738.062425] end_device-6:0:1: mptsas: ioc2: removing ssp device: fw_channel
0, fw_id 9, phy 1,sas_addr 0x5000c5000182d58d
[ 4738.062432] phy-6:0:9: mptsas: ioc2: delete phy 1, phy-obj
(0x883f21a82400)
[ 4738.062446] port-6:0:1: mptsas: ioc2: delete port 1, sas_addr
(0x5000c5000182d58d)
[ 4738.062558] end_device-6:0:0: mptsas: ioc2: removing sata device:
fw_channel 0, fw_id 8, phy 0,sas_addr 0x500194752200
[ 4738.062560] phy-6:0:8: mptsas: ioc2: delete phy 0, phy-obj
(0x883f21a80c00)
[ 4738.062564] port-6:0:0: mptsas: ioc2: delete port 0, sas_addr
(0x500194752200)
[ 4738.062937] end_device-6:0:7: mptsas: ioc2: removing ssp device: fw_channel
0, fw_id 32, phy 24,sas_addr 0x50019475223e
[ 4738.062939] phy-6:0:32: mptsas: ioc2: delete phy 24, phy-obj
(0x883f21a78800)
[ 4738.062946] port-6:0:7: mptsas: ioc2: delete port 7, sas_addr
(0x50019475223e)
[ 4738.065679] end_device-6:0:5: mptsas: ioc2: removing sata device:
fw_channel 0, fw_id 20, phy 12,sas_addr 0x50019475220c
[ 4738.065683] phy-6:0:20: mptsas: ioc2: delete phy 12, phy-obj
(0x883f21a9a000)
[ 4738.065698] port-6:0:5: mptsas: ioc2: delete port 5, sas_addr
(0x50019475220c)
[ 4738.074843] end_device-6:0:4: mptsas: ioc2: removing sata device:
fw_channel 0, fw_id 16, phy 8,sas_addr 0x500194752208
[ 4738.074856] phy-6:0:16: mptsas: ioc2: delete phy 8, phy-obj
(0x883f21a82000)
[ 4738.074883] port-6:0:4: mptsas: ioc2: delete port 4, sas_addr
(0x500194752208)
[ 4738.136115] sd 6:0:3:0: [sdl] Synchronizing SCSI cache
[ 4738.136192] sd 6:0:3:0: [sdl] Synchronize Cache(10) failed: Result:
hostbyte=DID_NO_CONNECT driverbyte=DRIVER_OK
[ 4738.225172] [ cut here ]
[ 4738.225188] WARNING: CPU: 0 PID: 19546 at fs/sysfs/group.c:237
sysfs_remove_group+0x89/0x90
[ 4738.225189] sysfs group 'power' not found for kobject 'target6:0:0'
[ 4738.225191] Modules linked in: iscsi_tcp libiscsi_tcp libiscsi
scsi_transport_iscsi serpent_sse2_x86_64 serpent_generic ablk_helper
algif_skcipher af_alg vmnet(O) vmblock(O) vmmon(O) vmw_vsock_vmci_transport
vsock vmw_vmci nfsd rpcsec_gss_krb5 auth_rpcgss oid_registry nfsv4 nfs lockd
grace sunrpc bonding cachefiles fscache binfmt_misc usb_storage ipmi_ssif
pl2303 amdgpu usbserial snd_oxygen dcdbas i2c_algo_bit snd_oxygen_lib
drm_kms_helper snd_hda_codec_hdmi coretemp snd_mpu401_uart cfbfillrect
syscopyarea snd_rawmidi cfbimgblt sr_mod sysfillrect snd_seq_device sysimgblt
cdrom snd_hda_intel fb_sys_fops mptsas cfbcopyarea snd_hda_codec ttm
snd_hda_core drm snd_hwdep snd_pcm snd_timer snd soundcore i7300_edac bnx2
edac_core mptspi mptscsih ipmi_si mptbase ipmi_devintf xhci_pci ipmi_msghandler
xhci_hcd
[ 4738.225270] CPU: 0 PID: 19546 Comm: kworker/0:9 Tainted: G O
4.11.5+ #8
[ 4738.225272] Hardware name: Dell Inc. PowerEdge R900/0TT975, BIOS 1.2.0
11/11/2010
[ 4738.225283] Workqueue: mpt/2 mptsas_firmware_event_work [mptsas]
[ 4738.225285] Call Trace:
[ 4738.225297] dump_stack+0x4d/0x65
[ 4738.225303] __warn+0xc7/0xf0
[ 4738.225304] warn_slowpath_fmt+0x46/0x50
[ 4738.225306] sysfs_remove_group+0x89/0x90
[ 4738.225310] dpm_sysfs_remove+0x52/0x60
[ 4738.225313] device_del+0x119/0x320
[ 4738.225315] ? kobject_release+0x4c/0x80
[ 4738.225319] scsi_target_reap_ref_release+0x28/0x40
[ 4738.225320] scsi_target_reap+0x29/0x30
[ 4738.225322] scsi_remove_target+0x189/0x1a0
[ 4738.225325] sas_rphy_remove+0x5b/0x70
[ 4738.225328] sas_port_delete+0x28/0x160
[ 4738.225331] ? sysfs_remove_link+0x14/0x30
[ 4738.225334] mptsas_del_end_device+0x16c/0x1a0 [mptsas]
[ 4738.225336] mptsas_expander_delete+0x129/0x310 [mptsas]
[ 4738.225338] mptsas_firmware_event_work+0x69f/0xcda [mptsas]
[ 4738.225340] ? mptsas_firmware_event_work+0x69f/0xcda [mptsas]
[ 4738.225346] ?
