Bug 71021

Summary: WARNING: CPU: 0 PID: 5517 at /build/buildd/linux-3.13.0/fs/sysfs/group.c:214 sysfs_remove_group+0xc6/0xd0()
Product: IO/Storage Reporter: Cristian Aravena Romero (caravena)
Component: SCSIAssignee: linux-scsi (linux-scsi)
Status: NEW ---    
Severity: normal CC: alan, davispuh, wangyijing
Priority: P1    
Hardware: All   
OS: Linux   
Kernel Version: 3.13 Subsystem:
Regression: No Bisected commit-id:

Description Cristian Aravena Romero 2014-02-23 00:51:05 UTC 
Open bug in launchpad.net:
https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1283604

"[ 5425.167885] usb 3-2: USB disconnect, device number 2
[ 7292.553234] usb 3-1: USB disconnect, device number 10
[ 7292.623563] FAT-fs (sdc1): unable to read boot sector to mark fs as dirty
[ 7292.623613] ------------[ cut here ]------------
[ 7292.623624] WARNING: CPU: 0 PID: 5517 at /build/buildd/linux-3.13.0/fs/sysfs/group.c:214 sysfs_remove_group+0xc6/0xd0()
[ 7292.623626] sysfs group ffffffff81cabb00 not found for kobject 'target6:0:0'
[ 7292.623628] Modules linked in: nls_iso8859_1 nls_utf8 isofs usb_storage ctr ccm pci_stub vboxpci(OF) vboxnetadp(OF) vboxnetflt(OF) vboxdrv(OF) parport_pc ppdev rfcomm bnep joydev intel_rapl x86_pkg_temp_thermal intel_powerclamp coretemp kvm_intel kvm crct10dif_pclmul crc32_pclmul ghash_clmulni_intel cryptd snd_hda_codec_hdmi snd_hda_codec_realtek btusb bluetooth samsung_laptop snd_hda_intel snd_hda_codec snd_hwdep snd_pcm microcode snd_page_alloc snd_seq_midi snd_seq_midi_event snd_rawmidi uvcvideo videobuf2_vmalloc snd_seq videobuf2_memops videobuf2_core arc4 snd_seq_device videodev snd_timer iwldvm snd psmouse mac80211 serio_raw iwlwifi cfg80211 lpc_ich soundcore mei_me mei i915 wmi video drm_kms_helper mac_hid drm i2c_algo_bit lp parport hid_generic usbhid hid btrfs xor raid6_pq libcrc32c ahci r8169 libahci mii
[ 7292.623708] CPU: 0 PID: 5517 Comm: umount Tainted: GF O 3.13.0-11-generic #31-Ubuntu
[ 7292.623711] Hardware name: SAMSUNG ELECTRONICS CO., LTD. 530U3C/530U4C/SAMSUNG_NP1234567890, BIOS P14AAJ 04/15/2013
[ 7292.623713] 0000000000000009 ffff880025bf1b70 ffffffff817163b5 ffff880025bf1bb8
[ 7292.623718] ffff880025bf1ba8 ffffffff8106450d 0000000000000000 ffffffff81cabb00
[ 7292.623723] ffff8800c0191438 ffff880053d83188 ffff8800ad531800 ffff880025bf1c08
[ 7292.623727] Call Trace:
[ 7292.623735] [<ffffffff817163b5>] dump_stack+0x45/0x56
[ 7292.623741] [<ffffffff8106450d>] warn_slowpath_common+0x7d/0xa0
[ 7292.623745] [<ffffffff8106457c>] warn_slowpath_fmt+0x4c/0x50
[ 7292.623751] [<ffffffff8122edfe>] ? sysfs_get_dirent_ns+0x4e/0x70
[ 7292.623756] [<ffffffff812300d6>] sysfs_remove_group+0xc6/0xd0
[ 7292.623761] [<ffffffff81496543>] dpm_sysfs_remove+0x43/0x50
[ 7292.623766] [<ffffffff8148bf75>] device_del+0x45/0x1c0
[ 7292.623772] [<ffffffff814ddd17>] scsi_target_reap_usercontext+0x27/0x40
[ 7292.623777] [<ffffffff8107ed27>] execute_in_process_context+0x67/0x70
[ 7292.623782] [<ffffffff814df6e4>] scsi_target_reap+0xc4/0xf0
[ 7292.623786] [<ffffffff814e12d8>] scsi_device_dev_release_usercontext+0x188/0x1c0
[ 7292.623790] [<ffffffff8107ed27>] execute_in_process_context+0x67/0x70
[ 7292.623794] [<ffffffff814e114c>] scsi_device_dev_release+0x1c/0x20
[ 7292.623798] [<ffffffff8148b5c2>] device_release+0x32/0xa0
[ 7292.623802] [<ffffffff81359f57>] kobject_cleanup+0x77/0x1b0
[ 7292.623805] [<ffffffff81359df8>] kobject_put+0x28/0x60
[ 7292.623809] [<ffffffff8148b8b7>] put_device+0x17/0x20
[ 7292.623813] [<ffffffff814d36cb>] scsi_device_put+0x3b/0x50
[ 7292.623819] [<ffffffff814e8940>] scsi_disk_put+0x30/0x50
[ 7292.623823] [<ffffffff814e8c72>] sd_release+0x42/0xd0
[ 7292.623827] [<ffffffff811f15ac>] __blkdev_put+0x16c/0x1a0
[ 7292.623831] [<ffffffff811f154e>] __blkdev_put+0x10e/0x1a0
[ 7292.623834] [<ffffffff811f1efe>] blkdev_put+0x4e/0x140
[ 7292.623839] [<ffffffff811b9cb4>] kill_block_super+0x44/0x70
[ 7292.623843] [<ffffffff811b9f7d>] deactivate_locked_super+0x3d/0x60
[ 7292.623847] [<ffffffff811ba536>] deactivate_super+0x46/0x60
[ 7292.623853] [<ffffffff811d71e6>] mntput_no_expire+0xd6/0x170
[ 7292.623856] [<ffffffff811d86ce>] SyS_umount+0x8e/0x100
[ 7292.623861] [<ffffffff81726fbf>] tracesys+0xe1/0xe6
[ 7292.623864] ---[ end trace e80cad625b577b20 ]---"
Comment 1 Greg Kroah-Hartman 2014-02-23 03:47:50 UTC 
On Sun, Feb 23, 2014 at 12:51:05AM +0000, bugzilla-daemon@bugzilla.kernel.org wrote:
> https://bugzilla.kernel.org/show_bug.cgi?id=71021
> 
>             Bug ID: 71021
>            Summary: WARNING: CPU: 0 PID: 5517 at
>                     /build/buildd/linux-3.13.0/fs/sysfs/group.c:214
>                     sysfs_remove_group+0xc6/0xd0()

Known issue, please let the scsi developers know, they have the patch to
fix this, yet have not submitted it to the kernel yet...
Comment 2 Dāvis 2015-07-04 00:14:12 UTC 
I've similar call trace on 4.0.7. I did "echo 1 > /sys/block/sde/device/delete", removed that disk and removed another disk without it. Then saw this in journal:


kernel: ------------[ cut here ]------------
kernel: WARNING: CPU: 3 PID: 7857 at fs/sysfs/group.c:219 sysfs_remove_group+0xa1/0xb0()
kernel: sysfs group ffffffff81893860 not found for kobject 'end_device-7:3'
kernel: Modules linked in: nls_iso8859_4 nls_iso8859_1 nls_cp437 xt_tcpudp ip6t_rpfilter ip6t_REJECT nf_reject_ipv6 ipt_REJECT nf_reject_ipv4 xt_conntrack ebtable_nat ebtable_broute bridge stp llc ebtable_filter ebtables ip6table_mangle ip6table_nat nf_conntrack_ipv6 nf_defrag_ipv6 nf_nat_ipv6 ip6table_raw ip6table_security ip6table_filter ip6_tables iptable_mangle iptable_nat nf_conntrack_ipv4 nf_defrag_ipv4 nf_nat_ipv4 nf_nat nf_conntrack iptable_raw iptable_security iptable_filter nls_utf8 nls_cp775 vfat fat saa7134_alsa tuner_simple tuner_types tda8290 tuner nvidia(PO) saa7134 videobuf2_dma_sg tveeprom rc_core videobuf2_memops videobuf2_core edac_core edac_mce_amd joydev mousedev mxm_wmi snd_usb_audio snd_usbmidi_lib snd_rawmidi v4l2_common videodev snd_seq_device kvm_amd evdev kvm serio_raw
kernel:  media crct10dif_pclmul crc32_pclmul ghash_clmulni_intel aesni_intel aes_x86_64 lrw gf128mul glue_helper ablk_helper cryptd r8169 mac_hid pcspkr fam15h_power tpm_infineon mii k10temp tpm_tis wmi snd_hda_codec_hdmi drm tpm snd_hda_codec_realtek sp5100_tco snd_hda_codec_generic acpi_cpufreq snd_hda_intel snd_hda_controller snd_hda_codec snd_hwdep snd_pcm snd_timer snd soundcore button shpchp processor i2c_piix4 i2c_core sch_fq_codel ip_tables x_tables btrfs xor raid6_pq hid_generic usbhid hid sd_mod atkbd libps2 crc32c_intel firewire_ohci firewire_core crc_itu_t ohci_pci ahci ehci_pci ohci_hcd libahci ehci_hcd mvsas libsas scsi_transport_sas xhci_pci libata xhci_hcd usbcore scsi_mod usb_common i8042 serio
kernel: CPU: 3 PID: 7857 Comm: kworker/u16:4 Tainted: P           O    4.0.7-2-ARCH #1
kernel: Hardware name: Gigabyte Technology Co., Ltd. GA-990FXA-UD3/GA-990FXA-UD3, BIOS FFe 11/08/2013
kernel: Workqueue: scsi_wq_7 sas_destruct_devices [libsas]
kernel:  0000000000000000 000000001fac2762 ffff880167ccbbf8 ffffffff81574ec3
kernel:  0000000000000000 ffff880167ccbc50 ffff880167ccbc38 ffffffff81074e7a
kernel:  ffff880167ccbc38 0000000000000000 ffffffff81893860 ffff880222e77810
kernel: Call Trace:
kernel:  [<ffffffff81574ec3>] dump_stack+0x4c/0x6e
kernel:  [<ffffffff81074e7a>] warn_slowpath_common+0x8a/0xc0
kernel:  [<ffffffff81074f05>] warn_slowpath_fmt+0x55/0x70
kernel:  [<ffffffff8124fc0c>] ? kernfs_find_and_get_ns+0x4c/0x60
kernel:  [<ffffffff812533c1>] sysfs_remove_group+0xa1/0xb0
kernel:  [<ffffffff813ef747>] dpm_sysfs_remove+0x57/0x60
kernel:  [<ffffffff813e2d58>] device_del+0x58/0x270
kernel:  [<ffffffff813e2f92>] device_unregister+0x22/0x80
kernel:  [<ffffffff812abd60>] bsg_unregister_queue+0x60/0xc0
kernel:  [<ffffffffa00587dc>] sas_rphy_remove+0x4c/0x80 [scsi_transport_sas]
kernel:  [<ffffffffa0058826>] sas_rphy_delete+0x16/0x30 [scsi_transport_sas]
kernel:  [<ffffffffa00a3a95>] sas_destruct_devices+0x65/0x90 [libsas]
kernel:  [<ffffffff8108dadb>] process_one_work+0x14b/0x470
kernel:  [<ffffffff8108e228>] worker_thread+0x48/0x4b0
kernel:  [<ffffffff8108e1e0>] ? init_pwq.part.7+0x10/0x10
kernel:  [<ffffffff8108e1e0>] ? init_pwq.part.7+0x10/0x10
kernel:  [<ffffffff810934b8>] kthread+0xd8/0xf0
kernel:  [<ffffffff81576a87>] ? schedule+0x37/0x90
kernel:  [<ffffffff810933e0>] ? kthread_worker_fn+0x170/0x170
kernel:  [<ffffffff8157a718>] ret_from_fork+0x58/0x90
kernel:  [<ffffffff810933e0>] ? kthread_worker_fn+0x170/0x170
kernel: ---[ end trace 82d1791291d041c8 ]---
kernel: ------------[ cut here ]------------
kernel: WARNING: CPU: 3 PID: 7857 at fs/sysfs/group.c:219 sysfs_remove_group+0xa1/0xb0()
kernel: sysfs group ffffffff81893860 not found for kobject 'end_device-7:3'
kernel: Modules linked in: nls_iso8859_4 nls_iso8859_1 nls_cp437 xt_tcpudp ip6t_rpfilter ip6t_REJECT nf_reject_ipv6 ipt_REJECT ...
kernel:  media crct10dif_pclmul crc32_pclmul ghash_clmulni_intel aesni_intel aes_x86_64 lrw gf128mul glue_helper ablk_helper cryptd ...
kernel: CPU: 3 PID: 7857 Comm: kworker/u16:4 Tainted: P        W  O    4.0.7-2-ARCH #1
kernel: Hardware name: Gigabyte Technology Co., Ltd. GA-990FXA-UD3/GA-990FXA-UD3, BIOS FFe 11/08/2013
kernel: Workqueue: scsi_wq_7 sas_destruct_devices [libsas]
kernel:  0000000000000000 000000001fac2762 ffff880167ccbb88 ffffffff81574ec3
kernel:  0000000000000000 ffff880167ccbbe0 ffff880167ccbbc8 ffffffff81074e7a
kernel:  ffff880167ccbbc8 0000000000000000 ffffffff81893860 ffff880222ec6838
kernel: Call Trace:
kernel:  [<ffffffff81574ec3>] dump_stack+0x4c/0x6e
kernel:  [<ffffffff81074e7a>] warn_slowpath_common+0x8a/0xc0
kernel:  [<ffffffff81074f05>] warn_slowpath_fmt+0x55/0x70
kernel:  [<ffffffff8124fc0c>] ? kernfs_find_and_get_ns+0x4c/0x60
kernel:  [<ffffffff812533c1>] sysfs_remove_group+0xa1/0xb0
kernel:  [<ffffffff813ef747>] dpm_sysfs_remove+0x57/0x60
kernel:  [<ffffffff813e2d58>] device_del+0x58/0x270
kernel:  [<ffffffff813e2319>] ? device_remove_file+0x19/0x20
kernel:  [<ffffffff813ec67e>] attribute_container_class_device_del+0x1e/0x30
kernel:  [<ffffffff813ec892>] transport_remove_classdev+0x52/0x60
kernel:  [<ffffffff813ec840>] ? transport_add_class_device+0x40/0x40
kernel:  [<ffffffff813ec1ec>] attribute_container_device_trigger+0xdc/0xf0
kernel:  [<ffffffff813ec7f5>] transport_remove_device+0x15/0x20
kernel:  [<ffffffffa00587e4>] sas_rphy_remove+0x54/0x80 [scsi_transport_sas]
kernel:  [<ffffffffa0058826>] sas_rphy_delete+0x16/0x30 [scsi_transport_sas]
kernel:  [<ffffffffa00a3a95>] sas_destruct_devices+0x65/0x90 [libsas]
kernel:  [<ffffffff8108dadb>] process_one_work+0x14b/0x470
kernel:  [<ffffffff8108e228>] worker_thread+0x48/0x4b0
kernel:  [<ffffffff8108e1e0>] ? init_pwq.part.7+0x10/0x10
kernel:  [<ffffffff8108e1e0>] ? init_pwq.part.7+0x10/0x10
kernel:  [<ffffffff810934b8>] kthread+0xd8/0xf0
kernel:  [<ffffffff81576a87>] ? schedule+0x37/0x90
kernel:  [<ffffffff810933e0>] ? kthread_worker_fn+0x170/0x170
kernel:  [<ffffffff8157a718>] ret_from_fork+0x58/0x90
kernel:  [<ffffffff810933e0>] ? kthread_worker_fn+0x170/0x170
kernel: ---[ end trace 82d1791291d041c9 ]---
kernel: ------------[ cut here ]------------
kernel: WARNING: CPU: 3 PID: 7857 at fs/sysfs/group.c:219 sysfs_remove_group+0xa1/0xb0()
kernel: sysfs group ffffffff81893860 not found for kobject 'end_device-7:3'
kernel: Modules linked in: nls_iso8859_4 nls_iso8859_1 nls_cp437 xt_tcpudp ip6t_rpfilter ip6t_REJECT nf_reject_ipv6 ipt_REJECT ...
kernel:  media crct10dif_pclmul crc32_pclmul ghash_clmulni_intel aesni_intel aes_x86_64 lrw gf128mul glue_helper ablk_helper cryptd ...
kernel: CPU: 3 PID: 7857 Comm: kworker/u16:4 Tainted: P        W  O    4.0.7-2-ARCH #1
kernel: Hardware name: Gigabyte Technology Co., Ltd. GA-990FXA-UD3/GA-990FXA-UD3, BIOS FFe 11/08/2013
kernel: Workqueue: scsi_wq_7 sas_destruct_devices [libsas]
kernel:  0000000000000000 000000001fac2762 ffff880167ccbb88 ffffffff81574ec3
kernel:  0000000000000000 ffff880167ccbbe0 ffff880167ccbbc8 ffffffff81074e7a
kernel:  ffff880167ccbbc8 0000000000000000 ffffffff81893860 ffff880222ec6c38
kernel: Call Trace:
kernel:  [<ffffffff81574ec3>] dump_stack+0x4c/0x6e
kernel:  [<ffffffff81074e7a>] warn_slowpath_common+0x8a/0xc0
kernel:  [<ffffffff81074f05>] warn_slowpath_fmt+0x55/0x70
kernel:  [<ffffffff8124fc0c>] ? kernfs_find_and_get_ns+0x4c/0x60
kernel:  [<ffffffff812533c1>] sysfs_remove_group+0xa1/0xb0
kernel:  [<ffffffff813ef747>] dpm_sysfs_remove+0x57/0x60
kernel:  [<ffffffff813e2d58>] device_del+0x58/0x270
kernel:  [<ffffffff813e2319>] ? device_remove_file+0x19/0x20
kernel:  [<ffffffff813ec67e>] attribute_container_class_device_del+0x1e/0x30
kernel:  [<ffffffff813ec892>] transport_remove_classdev+0x52/0x60
kernel:  [<ffffffff813ec840>] ? transport_add_class_device+0x40/0x40
kernel:  [<ffffffff813ec1ec>] attribute_container_device_trigger+0xdc/0xf0
kernel:  [<ffffffff813ec7f5>] transport_remove_device+0x15/0x20
kernel:  [<ffffffffa00587e4>] sas_rphy_remove+0x54/0x80 [scsi_transport_sas]
kernel:  [<ffffffffa0058826>] sas_rphy_delete+0x16/0x30 [scsi_transport_sas]
kernel:  [<ffffffffa00a3a95>] sas_destruct_devices+0x65/0x90 [libsas]
kernel:  [<ffffffff8108dadb>] process_one_work+0x14b/0x470
kernel:  [<ffffffff8108e228>] worker_thread+0x48/0x4b0
kernel:  [<ffffffff8108e1e0>] ? init_pwq.part.7+0x10/0x10
kernel:  [<ffffffff8108e1e0>] ? init_pwq.part.7+0x10/0x10
kernel:  [<ffffffff810934b8>] kthread+0xd8/0xf0
kernel:  [<ffffffff81576a87>] ? schedule+0x37/0x90
kernel:  [<ffffffff810933e0>] ? kthread_worker_fn+0x170/0x170
kernel:  [<ffffffff8157a718>] ret_from_fork+0x58/0x90
kernel:  [<ffffffff810933e0>] ? kthread_worker_fn+0x170/0x170
kernel: ---[ end trace 82d1791291d041ca ]---
kernel: ------------[ cut here ]------------
kernel: WARNING: CPU: 3 PID: 7857 at fs/sysfs/group.c:219 sysfs_remove_group+0xa1/0xb0()
kernel: sysfs group ffffffff81893860 not found for kobject 'end_device-7:3'
kernel: Modules linked in: nls_iso8859_4 nls_iso8859_1 nls_cp437 xt_tcpudp ip6t_rpfilter ip6t_REJECT nf_reject_ipv6 ipt_REJECT ...
kernel:  media crct10dif_pclmul crc32_pclmul ghash_clmulni_intel aesni_intel aes_x86_64 lrw gf128mul glue_helper ablk_helper cryptd ...
kernel: CPU: 3 PID: 7857 Comm: kworker/u16:4 Tainted: P        W  O    4.0.7-2-ARCH #1
kernel: Hardware name: Gigabyte Technology Co., Ltd. GA-990FXA-UD3/GA-990FXA-UD3, BIOS FFe 11/08/2013
kernel: Workqueue: scsi_wq_7 sas_destruct_devices [libsas]
kernel:  0000000000000000 000000001fac2762 ffff880167ccbc38 ffffffff81574ec3
kernel:  0000000000000000 ffff880167ccbc90 ffff880167ccbc78 ffffffff81074e7a
kernel:  ffff880167ccbc78 0000000000000000 ffffffff81893860 ffff880222ec6410
kernel: Call Trace:
kernel:  [<ffffffff81574ec3>] dump_stack+0x4c/0x6e
kernel:  [<ffffffff81074e7a>] warn_slowpath_common+0x8a/0xc0
kernel:  [<ffffffff81074f05>] warn_slowpath_fmt+0x55/0x70
kernel:  [<ffffffff8124fc0c>] ? kernfs_find_and_get_ns+0x4c/0x60
kernel:  [<ffffffff812533c1>] sysfs_remove_group+0xa1/0xb0
kernel:  [<ffffffff813ef747>] dpm_sysfs_remove+0x57/0x60
kernel:  [<ffffffff813e2d58>] device_del+0x58/0x270
kernel:  [<ffffffffa00587ec>] sas_rphy_remove+0x5c/0x80 [scsi_transport_sas]
kernel:  [<ffffffffa0058826>] sas_rphy_delete+0x16/0x30 [scsi_transport_sas]
kernel:  [<ffffffffa00a3a95>] sas_destruct_devices+0x65/0x90 [libsas]
kernel:  [<ffffffff8108dadb>] process_one_work+0x14b/0x470
kernel:  [<ffffffff8108e228>] worker_thread+0x48/0x4b0
kernel:  [<ffffffff8108e1e0>] ? init_pwq.part.7+0x10/0x10
kernel:  [<ffffffff8108e1e0>] ? init_pwq.part.7+0x10/0x10
kernel:  [<ffffffff810934b8>] kthread+0xd8/0xf0
kernel:  [<ffffffff81576a87>] ? schedule+0x37/0x90
kernel:  [<ffffffff810933e0>] ? kthread_worker_fn+0x170/0x170
kernel:  [<ffffffff8157a718>] ret_from_fork+0x58/0x90
kernel:  [<ffffffff810933e0>] ? kthread_worker_fn+0x170/0x170
kernel: ---[ end trace 82d1791291d041cb ]---
kernel: ------------[ cut here ]------------
kernel: WARNING: CPU: 4 PID: 8386 at fs/sysfs/group.c:219 sysfs_remove_group+0xa1/0xb0()
kernel: sysfs group ffffffff81893860 not found for kobject '7:0:5:0'
kernel: Modules linked in: nls_iso8859_4 nls_iso8859_1 nls_cp437 xt_tcpudp ip6t_rpfilter ip6t_REJECT nf_reject_ipv6 ipt_REJECT ...
kernel:  media crct10dif_pclmul crc32_pclmul ghash_clmulni_intel aesni_intel aes_x86_64 lrw gf128mul glue_helper ablk_helper cryptd ...
kernel: CPU: 4 PID: 8386 Comm: kworker/u16:9 Tainted: P        W  O    4.0.7-2-ARCH #1
kernel: Hardware name: Gigabyte Technology Co., Ltd. GA-990FXA-UD3/GA-990FXA-UD3, BIOS FFe 11/08/2013
kernel: Workqueue: scsi_wq_7 sas_destruct_devices [libsas]
kernel:  0000000000000000 000000008e53c616 ffff880080d67b68 ffffffff81574ec3
kernel:  0000000000000000 ffff880080d67bc0 ffff880080d67ba8 ffffffff81074e7a
kernel:  ffff880080d67ba8 0000000000000000 ffffffff81893860 ffff880222ef0010
kernel: Call Trace:
kernel:  [<ffffffff81574ec3>] dump_stack+0x4c/0x6e
kernel:  [<ffffffff81074e7a>] warn_slowpath_common+0x8a/0xc0
kernel:  [<ffffffff81074f05>] warn_slowpath_fmt+0x55/0x70
kernel:  [<ffffffff8124fc0c>] ? kernfs_find_and_get_ns+0x4c/0x60
kernel:  [<ffffffff812533c1>] sysfs_remove_group+0xa1/0xb0
kernel:  [<ffffffff813ef747>] dpm_sysfs_remove+0x57/0x60
kernel:  [<ffffffff813e2d58>] device_del+0x58/0x270
kernel:  [<ffffffff813e2f92>] device_unregister+0x22/0x80
kernel:  [<ffffffff812abd60>] bsg_unregister_queue+0x60/0xc0
kernel:  [<ffffffffa008b461>] __scsi_remove_device+0xb1/0xe0 [scsi_mod]
kernel:  [<ffffffffa008b4b6>] scsi_remove_device+0x26/0x40 [scsi_mod]
kernel:  [<ffffffffa008b66c>] scsi_remove_target+0x16c/0x240 [scsi_mod]
kernel:  [<ffffffffa00587fd>] sas_rphy_remove+0x6d/0x80 [scsi_transport_sas]
kernel:  [<ffffffffa0058826>] sas_rphy_delete+0x16/0x30 [scsi_transport_sas]
kernel:  [<ffffffffa00a3a95>] sas_destruct_devices+0x65/0x90 [libsas]
kernel:  [<ffffffff8108dadb>] process_one_work+0x14b/0x470
kernel:  [<ffffffff8108e228>] worker_thread+0x48/0x4b0
kernel:  [<ffffffff8108e1e0>] ? init_pwq.part.7+0x10/0x10
kernel:  [<ffffffff8108e1e0>] ? init_pwq.part.7+0x10/0x10
kernel:  [<ffffffff810934b8>] kthread+0xd8/0xf0
kernel:  [<ffffffff810933e0>] ? kthread_worker_fn+0x170/0x170
kernel:  [<ffffffff8157a718>] ret_from_fork+0x58/0x90
kernel:  [<ffffffff810933e0>] ? kthread_worker_fn+0x170/0x170
kernel: ---[ end trace 82d1791291d041cc ]---
kernel: ------------[ cut here ]------------
kernel: WARNING: CPU: 1 PID: 8386 at fs/sysfs/group.c:219 sysfs_remove_group+0xa1/0xb0()
kernel: sysfs group ffffffff81893860 not found for kobject '7:0:5:0'
kernel: Modules linked in: nls_iso8859_4 nls_iso8859_1 nls_cp437 xt_tcpudp ip6t_rpfilter ip6t_REJECT nf_reject_ipv6 ipt_REJECT ...
kernel:  media crct10dif_pclmul crc32_pclmul ghash_clmulni_intel aesni_intel aes_x86_64 lrw gf128mul glue_helper ablk_helper cryptd ...
kernel: CPU: 1 PID: 8386 Comm: kworker/u16:9 Tainted: P        W  O    4.0.7-2-ARCH #1
kernel: Hardware name: Gigabyte Technology Co., Ltd. GA-990FXA-UD3/GA-990FXA-UD3, BIOS FFe 11/08/2013
kernel: Workqueue: scsi_wq_7 sas_destruct_devices [libsas]
kernel:  0000000000000000 000000008e53c616 ffff880080d67b88 ffffffff81574ec3
kernel:  0000000000000000 ffff880080d67be0 ffff880080d67bc8 ffffffff81074e7a
kernel:  ffff880080d67bc8 0000000000000000 ffffffff81893860 ffff880222cfe428
kernel: Call Trace:
kernel:  [<ffffffff81574ec3>] dump_stack+0x4c/0x6e
kernel:  [<ffffffff81074e7a>] warn_slowpath_common+0x8a/0xc0
kernel:  [<ffffffff81074f05>] warn_slowpath_fmt+0x55/0x70
kernel:  [<ffffffff8124fc0c>] ? kernfs_find_and_get_ns+0x4c/0x60
kernel:  [<ffffffff812533c1>] sysfs_remove_group+0xa1/0xb0
kernel:  [<ffffffff813ef747>] dpm_sysfs_remove+0x57/0x60
kernel:  [<ffffffff813e2d58>] device_del+0x58/0x270
kernel:  [<ffffffff813e2f92>] device_unregister+0x22/0x80
kernel:  [<ffffffffa008b46d>] __scsi_remove_device+0xbd/0xe0 [scsi_mod]
kernel:  [<ffffffffa008b4b6>] scsi_remove_device+0x26/0x40 [scsi_mod]
kernel:  [<ffffffffa008b66c>] scsi_remove_target+0x16c/0x240 [scsi_mod]
kernel:  [<ffffffffa00587fd>] sas_rphy_remove+0x6d/0x80 [scsi_transport_sas]
kernel:  [<ffffffffa0058826>] sas_rphy_delete+0x16/0x30 [scsi_transport_sas]
kernel:  [<ffffffffa00a3a95>] sas_destruct_devices+0x65/0x90 [libsas]
kernel:  [<ffffffff8108dadb>] process_one_work+0x14b/0x470
kernel:  [<ffffffff8108e228>] worker_thread+0x48/0x4b0
kernel:  [<ffffffff8108e1e0>] ? init_pwq.part.7+0x10/0x10
kernel:  [<ffffffff8108e1e0>] ? init_pwq.part.7+0x10/0x10
kernel:  [<ffffffff810934b8>] kthread+0xd8/0xf0
kernel:  [<ffffffff810933e0>] ? kthread_worker_fn+0x170/0x170
kernel:  [<ffffffff8157a718>] ret_from_fork+0x58/0x90
kernel:  [<ffffffff810933e0>] ? kthread_worker_fn+0x170/0x170
kernel: ---[ end trace 82d1791291d041cd ]---
kernel: ------------[ cut here ]------------
kernel: WARNING: CPU: 1 PID: 8386 at fs/sysfs/group.c:219 sysfs_remove_group+0xa1/0xb0()
kernel: sysfs group ffffffff81893860 not found for kobject '7:0:5:0'
kernel: Modules linked in: nls_iso8859_4 nls_iso8859_1 nls_cp437 xt_tcpudp ip6t_rpfilter ip6t_REJECT nf_reject_ipv6 ipt_REJECT ...
kernel:  media crct10dif_pclmul crc32_pclmul ghash_clmulni_intel aesni_intel aes_x86_64 lrw gf128mul glue_helper ablk_helper cryptd ...
kernel: CPU: 1 PID: 8386 Comm: kworker/u16:9 Tainted: P        W  O    4.0.7-2-ARCH #1
kernel: Hardware name: Gigabyte Technology Co., Ltd. GA-990FXA-UD3/GA-990FXA-UD3, BIOS FFe 11/08/2013
kernel: Workqueue: scsi_wq_7 sas_destruct_devices [libsas]
kernel:  0000000000000000 000000008e53c616 ffff880080d67ba8 ffffffff81574ec3
kernel:  0000000000000000 ffff880080d67c00 ffff880080d67be8 ffffffff81074e7a
kernel:  ffff880080d67be8 0000000000000000 ffffffff81893860 ffff880222cfe178
kernel: Call Trace:
kernel:  [<ffffffff81574ec3>] dump_stack+0x4c/0x6e
kernel:  [<ffffffff81074e7a>] warn_slowpath_common+0x8a/0xc0
kernel:  [<ffffffff81074f05>] warn_slowpath_fmt+0x55/0x70
kernel:  [<ffffffff8124fc0c>] ? kernfs_find_and_get_ns+0x4c/0x60
kernel:  [<ffffffff812533c1>] sysfs_remove_group+0xa1/0xb0
kernel:  [<ffffffff813ef747>] dpm_sysfs_remove+0x57/0x60
kernel:  [<ffffffff813e2d58>] device_del+0x58/0x270
kernel:  [<ffffffffa008b47d>] __scsi_remove_device+0xcd/0xe0 [scsi_mod]
kernel:  [<ffffffffa008b4b6>] scsi_remove_device+0x26/0x40 [scsi_mod]
kernel:  [<ffffffffa008b66c>] scsi_remove_target+0x16c/0x240 [scsi_mod]
kernel:  [<ffffffffa00587fd>] sas_rphy_remove+0x6d/0x80 [scsi_transport_sas]
kernel:  [<ffffffffa0058826>] sas_rphy_delete+0x16/0x30 [scsi_transport_sas]
kernel:  [<ffffffffa00a3a95>] sas_destruct_devices+0x65/0x90 [libsas]
kernel:  [<ffffffff8108dadb>] process_one_work+0x14b/0x470
kernel:  [<ffffffff8108e228>] worker_thread+0x48/0x4b0
kernel:  [<ffffffff8108e1e0>] ? init_pwq.part.7+0x10/0x10
kernel:  [<ffffffff8108e1e0>] ? init_pwq.part.7+0x10/0x10
kernel:  [<ffffffff810934b8>] kthread+0xd8/0xf0
kernel:  [<ffffffff810933e0>] ? kthread_worker_fn+0x170/0x170
kernel:  [<ffffffff8157a718>] ret_from_fork+0x58/0x90
kernel:  [<ffffffff810933e0>] ? kthread_worker_fn+0x170/0x170
kernel: ---[ end trace 82d1791291d041ce ]---
kernel: ------------[ cut here ]------------
kernel: WARNING: CPU: 1 PID: 8386 at fs/sysfs/group.c:219 sysfs_remove_group+0xa1/0xb0()
kernel: sysfs group ffffffff81893860 not found for kobject '7:0:5:0'
kernel: Modules linked in: nls_iso8859_4 nls_iso8859_1 nls_cp437 xt_tcpudp ip6t_rpfilter ip6t_REJECT nf_reject_ipv6 ipt_REJECT ...
kernel:  media crct10dif_pclmul crc32_pclmul ghash_clmulni_intel aesni_intel aes_x86_64 lrw gf128mul glue_helper ablk_helper cryptd ...
kernel: CPU: 1 PID: 8386 Comm: kworker/u16:9 Tainted: P        W  O    4.0.7-2-ARCH #1
kernel: Hardware name: Gigabyte Technology Co., Ltd. GA-990FXA-UD3/GA-990FXA-UD3, BIOS FFe 11/08/2013
kernel: Workqueue: scsi_wq_7 sas_destruct_devices [libsas]
kernel:  0000000000000000 000000008e53c616 ffff880080d67ab8 ffffffff81574ec3
kernel:  0000000000000000 ffff880080d67b10 ffff880080d67af8 ffffffff81074e7a
kernel:  ffff880080d67af8 0000000000000000 ffffffff81893860 ffff880223230c20
kernel: Call Trace:
kernel:  [<ffffffff81574ec3>] dump_stack+0x4c/0x6e
kernel:  [<ffffffff81074e7a>] warn_slowpath_common+0x8a/0xc0
kernel:  [<ffffffff81074f05>] warn_slowpath_fmt+0x55/0x70
kernel:  [<ffffffff8124fc0c>] ? kernfs_find_and_get_ns+0x4c/0x60
kernel:  [<ffffffff812533c1>] sysfs_remove_group+0xa1/0xb0
kernel:  [<ffffffff813ef747>] dpm_sysfs_remove+0x57/0x60
kernel:  [<ffffffff813e2d58>] device_del+0x58/0x270
kernel:  [<ffffffffa0104e25>] sd_remove+0x55/0xc0 [sd_mod]
kernel:  [<ffffffff813e725f>] __device_release_driver+0x7f/0xf0
kernel:  [<ffffffff813e72f3>] device_release_driver+0x23/0x30
kernel:  [<ffffffff813e6ba8>] bus_remove_device+0x108/0x180
kernel:  [<ffffffff813e2e41>] device_del+0x141/0x270
kernel:  [<ffffffffa008b47d>] __scsi_remove_device+0xcd/0xe0 [scsi_mod]
kernel:  [<ffffffffa008b4b6>] scsi_remove_device+0x26/0x40 [scsi_mod]
kernel:  [<ffffffffa008b66c>] scsi_remove_target+0x16c/0x240 [scsi_mod]
kernel:  [<ffffffffa00587fd>] sas_rphy_remove+0x6d/0x80 [scsi_transport_sas]
kernel:  [<ffffffffa0058826>] sas_rphy_delete+0x16/0x30 [scsi_transport_sas]
kernel:  [<ffffffffa00a3a95>] sas_destruct_devices+0x65/0x90 [libsas]
kernel:  [<ffffffff8108dadb>] process_one_work+0x14b/0x470
kernel:  [<ffffffff8108e228>] worker_thread+0x48/0x4b0
kernel:  [<ffffffff8108e1e0>] ? init_pwq.part.7+0x10/0x10
kernel:  [<ffffffff8108e1e0>] ? init_pwq.part.7+0x10/0x10
kernel:  [<ffffffff810934b8>] kthread+0xd8/0xf0
kernel:  [<ffffffff810933e0>] ? kthread_worker_fn+0x170/0x170
kernel:  [<ffffffff8157a718>] ret_from_fork+0x58/0x90
kernel:  [<ffffffff810933e0>] ? kthread_worker_fn+0x170/0x170
kernel: ---[ end trace 82d1791291d041cf ]---
kernel: ------------[ cut here ]------------
kernel: WARNING: CPU: 1 PID: 8386 at fs/sysfs/group.c:219 sysfs_remove_group+0xa1/0xb0()
kernel: sysfs group ffffffff818561a0 not found for kobject 'sdg'
kernel: Modules linked in: nls_iso8859_4 nls_iso8859_1 nls_cp437 xt_tcpudp ip6t_rpfilter ip6t_REJECT nf_reject_ipv6 ipt_REJECT ...
kernel:  media crct10dif_pclmul crc32_pclmul ghash_clmulni_intel aesni_intel aes_x86_64 lrw gf128mul glue_helper ablk_helper cryptd ...
kernel: CPU: 1 PID: 8386 Comm: kworker/u16:9 Tainted: P        W  O    4.0.7-2-ARCH #1
kernel: Hardware name: Gigabyte Technology Co., Ltd. GA-990FXA-UD3/GA-990FXA-UD3, BIOS FFe 11/08/2013
kernel: Workqueue: scsi_wq_7 sas_destruct_devices [libsas]
kernel:  0000000000000000 000000008e53c616 ffff880080d67aa8 ffffffff81574ec3
kernel:  0000000000000000 ffff880080d67b00 ffff880080d67ae8 ffffffff81074e7a
kernel:  ffff880080d67ae8 0000000000000000 ffffffff818561a0 ffff880223230880
kernel: Call Trace:
kernel:  [<ffffffff81574ec3>] dump_stack+0x4c/0x6e
kernel:  [<ffffffff81074e7a>] warn_slowpath_common+0x8a/0xc0
kernel:  [<ffffffff81074f05>] warn_slowpath_fmt+0x55/0x70
kernel:  [<ffffffff8124fc0c>] ? kernfs_find_and_get_ns+0x4c/0x60
kernel:  [<ffffffff812533c1>] sysfs_remove_group+0xa1/0xb0
kernel:  [<ffffffff81137144>] blk_trace_remove_sysfs+0x14/0x20
kernel:  [<ffffffff812952a5>] blk_unregister_queue+0x65/0xa0
kernel:  [<ffffffff812a34be>] del_gendisk+0x12e/0x240
kernel:  [<ffffffffa0104e31>] sd_remove+0x61/0xc0 [sd_mod]
kernel:  [<ffffffff813e725f>] __device_release_driver+0x7f/0xf0
kernel:  [<ffffffff813e72f3>] device_release_driver+0x23/0x30
kernel:  [<ffffffff813e6ba8>] bus_remove_device+0x108/0x180
kernel:  [<ffffffff813e2e41>] device_del+0x141/0x270
kernel:  [<ffffffffa008b47d>] __scsi_remove_device+0xcd/0xe0 [scsi_mod]
kernel:  [<ffffffffa008b4b6>] scsi_remove_device+0x26/0x40 [scsi_mod]
kernel:  [<ffffffffa008b66c>] scsi_remove_target+0x16c/0x240 [scsi_mod]
kernel:  [<ffffffffa00587fd>] sas_rphy_remove+0x6d/0x80 [scsi_transport_sas]
kernel:  [<ffffffffa0058826>] sas_rphy_delete+0x16/0x30 [scsi_transport_sas]
kernel:  [<ffffffffa00a3a95>] sas_destruct_devices+0x65/0x90 [libsas]
kernel:  [<ffffffff8108dadb>] process_one_work+0x14b/0x470
kernel:  [<ffffffff8108e228>] worker_thread+0x48/0x4b0
kernel:  [<ffffffff8108e1e0>] ? init_pwq.part.7+0x10/0x10
kernel:  [<ffffffff8108e1e0>] ? init_pwq.part.7+0x10/0x10
kernel:  [<ffffffff810934b8>] kthread+0xd8/0xf0
kernel:  [<ffffffff810933e0>] ? kthread_worker_fn+0x170/0x170
kernel:  [<ffffffff8157a718>] ret_from_fork+0x58/0x90
kernel:  [<ffffffff810933e0>] ? kthread_worker_fn+0x170/0x170
kernel: ---[ end trace 82d1791291d041d0 ]---
kernel: ------------[ cut here ]------------
kernel: WARNING: CPU: 1 PID: 8386 at fs/sysfs/group.c:219 sysfs_remove_group+0xa1/0xb0()
kernel: sysfs group ffffffff81893860 not found for kobject 'sdg'
kernel: Modules linked in: nls_iso8859_4 nls_iso8859_1 nls_cp437 xt_tcpudp ip6t_rpfilter ip6t_REJECT nf_reject_ipv6 ipt_REJECT ...
kernel:  media crct10dif_pclmul crc32_pclmul ghash_clmulni_intel aesni_intel aes_x86_64 lrw gf128mul glue_helper ablk_helper cryptd ...
kernel: CPU: 1 PID: 8386 Comm: kworker/u16:9 Tainted: P        W  O    4.0.7-2-ARCH #1
kernel: Hardware name: Gigabyte Technology Co., Ltd. GA-990FXA-UD3/GA-990FXA-UD3, BIOS FFe 11/08/2013
kernel: Workqueue: scsi_wq_7 sas_destruct_devices [libsas]
kernel:  0000000000000000 000000008e53c616 ffff880080d67a68 ffffffff81574ec3
kernel:  0000000000000000 ffff880080d67ac0 ffff880080d67aa8 ffffffff81074e7a
kernel:  ffff880080d67aa8 0000000000000000 ffffffff81893860 ffff880223230880
kernel: Call Trace:
kernel:  [<ffffffff81574ec3>] dump_stack+0x4c/0x6e
kernel:  [<ffffffff81074e7a>] warn_slowpath_common+0x8a/0xc0
kernel:  [<ffffffff81074f05>] warn_slowpath_fmt+0x55/0x70
kernel:  [<ffffffff8124fc0c>] ? kernfs_find_and_get_ns+0x4c/0x60
kernel:  [<ffffffff812533c1>] sysfs_remove_group+0xa1/0xb0
kernel:  [<ffffffff813ef747>] dpm_sysfs_remove+0x57/0x60
kernel:  [<ffffffff813e2d58>] device_del+0x58/0x270
kernel:  [<ffffffff813f1406>] ? pm_runtime_set_memalloc_noio+0xa6/0xc0
kernel:  [<ffffffff812a3598>] del_gendisk+0x208/0x240
kernel:  [<ffffffffa0104e31>] sd_remove+0x61/0xc0 [sd_mod]
kernel:  [<ffffffff813e725f>] __device_release_driver+0x7f/0xf0
kernel:  [<ffffffff813e72f3>] device_release_driver+0x23/0x30
kernel:  [<ffffffff813e6ba8>] bus_remove_device+0x108/0x180
kernel:  [<ffffffff813e2e41>] device_del+0x141/0x270
kernel:  [<ffffffffa008b47d>] __scsi_remove_device+0xcd/0xe0 [scsi_mod]
kernel:  [<ffffffffa008b4b6>] scsi_remove_device+0x26/0x40 [scsi_mod]
kernel:  [<ffffffffa008b66c>] scsi_remove_target+0x16c/0x240 [scsi_mod]
kernel:  [<ffffffffa00587fd>] sas_rphy_remove+0x6d/0x80 [scsi_transport_sas]
kernel:  [<ffffffffa0058826>] sas_rphy_delete+0x16/0x30 [scsi_transport_sas]
kernel:  [<ffffffffa00a3a95>] sas_destruct_devices+0x65/0x90 [libsas]
kernel:  [<ffffffff8108dadb>] process_one_work+0x14b/0x470
kernel:  [<ffffffff8108e228>] worker_thread+0x48/0x4b0
kernel:  [<ffffffff8108e1e0>] ? init_pwq.part.7+0x10/0x10
kernel:  [<ffffffff8108e1e0>] ? init_pwq.part.7+0x10/0x10
kernel:  [<ffffffff810934b8>] kthread+0xd8/0xf0
kernel:  [<ffffffff810933e0>] ? kthread_worker_fn+0x170/0x170
kernel:  [<ffffffff8157a718>] ret_from_fork+0x58/0x90
kernel:  [<ffffffff810933e0>] ? kthread_worker_fn+0x170/0x170
kernel: ---[ end trace 82d1791291d041d1 ]---
kernel: sd 7:0:5:0: [sdg] Synchronizing SCSI cache
kernel: sd 7:0:5:0: [sdg] Synchronize Cache(10) failed: Result: hostbyte=0x04 driverbyte=0x00
kernel: sd 7:0:5:0: [sdg] Stopping disk
kernel: sd 7:0:5:0: [sdg] Start/Stop Unit failed: Result: hostbyte=0x04 driverbyte=0x00
kernel: ------------[ cut here ]------------
kernel: WARNING: CPU: 4 PID: 8386 at fs/sysfs/group.c:219 sysfs_remove_group+0xa1/0xb0()
kernel: sysfs group ffffffff81893860 not found for kobject 'target7:0:5'
kernel: Modules linked in: nls_iso8859_4 nls_iso8859_1 nls_cp437 xt_tcpudp ip6t_rpfilter ip6t_REJECT nf_reject_ipv6 ipt_REJECT ...
kernel:  media crct10dif_pclmul crc32_pclmul ghash_clmulni_intel aesni_intel aes_x86_64 lrw gf128mul glue_helper ablk_helper cryptd ...
kernel: CPU: 4 PID: 8386 Comm: kworker/u16:9 Tainted: P        W  O    4.0.7-2-ARCH #1
kernel: Hardware name: Gigabyte Technology Co., Ltd. GA-990FXA-UD3/GA-990FXA-UD3, BIOS FFe 11/08/2013
kernel: Workqueue: scsi_wq_7 sas_destruct_devices [libsas]
kernel:  0000000000000000 000000008e53c616 ffff880080d67bb8 ffffffff81574ec3
kernel:  0000000000000000 ffff880080d67c10 ffff880080d67bf8 ffffffff81074e7a
kernel:  ffff880080d67bf8 0000000000000000 ffffffff81893860 ffff8800c9bb1438
kernel: Call Trace:
kernel:  [<ffffffff81574ec3>] dump_stack+0x4c/0x6e
kernel:  [<ffffffff81074e7a>] warn_slowpath_common+0x8a/0xc0
kernel:  [<ffffffff81074f05>] warn_slowpath_fmt+0x55/0x70
kernel:  [<ffffffff8124fc0c>] ? kernfs_find_and_get_ns+0x4c/0x60
kernel:  [<ffffffff812533c1>] sysfs_remove_group+0xa1/0xb0
kernel:  [<ffffffff813ef747>] dpm_sysfs_remove+0x57/0x60
kernel:  [<ffffffff813e2d58>] device_del+0x58/0x270
kernel:  [<ffffffffa00874b7>] scsi_target_reap_ref_put+0x37/0x50 [scsi_mod]
kernel:  [<ffffffffa0089337>] scsi_target_reap+0x17/0x30 [scsi_mod]
kernel:  [<ffffffffa008b6d1>] scsi_remove_target+0x1d1/0x240 [scsi_mod]
kernel:  [<ffffffffa00587fd>] sas_rphy_remove+0x6d/0x80 [scsi_transport_sas]
kernel:  [<ffffffffa0058826>] sas_rphy_delete+0x16/0x30 [scsi_transport_sas]
kernel:  [<ffffffffa00a3a95>] sas_destruct_devices+0x65/0x90 [libsas]
kernel:  [<ffffffff8108dadb>] process_one_work+0x14b/0x470
kernel:  [<ffffffff8108e228>] worker_thread+0x48/0x4b0
kernel:  [<ffffffff8108e1e0>] ? init_pwq.part.7+0x10/0x10
kernel:  [<ffffffff8108e1e0>] ? init_pwq.part.7+0x10/0x10
kernel:  [<ffffffff810934b8>] kthread+0xd8/0xf0
kernel:  [<ffffffff810933e0>] ? kthread_worker_fn+0x170/0x170
kernel:  [<ffffffff8157a718>] ret_from_fork+0x58/0x90
kernel:  [<ffffffff810933e0>] ? kthread_worker_fn+0x170/0x170
kernel: ---[ end trace 82d1791291d041d2 ]---
kernel: ------------[ cut here ]------------
kernel: WARNING: CPU: 4 PID: 8386 at fs/sysfs/group.c:219 sysfs_remove_group+0xa1/0xb0()
kernel: sysfs group ffffffff81893860 not found for kobject 'end_device-7:5'
kernel: Modules linked in: nls_iso8859_4 nls_iso8859_1 nls_cp437 xt_tcpudp ip6t_rpfilter ip6t_REJECT nf_reject_ipv6 ipt_REJECT ...
kernel:  media crct10dif_pclmul crc32_pclmul ghash_clmulni_intel aesni_intel aes_x86_64 lrw gf128mul glue_helper ablk_helper cryptd ...
kernel: CPU: 4 PID: 8386 Comm: kworker/u16:9 Tainted: P        W  O    4.0.7-2-ARCH #1
kernel: Hardware name: Gigabyte Technology Co., Ltd. GA-990FXA-UD3/GA-990FXA-UD3, BIOS FFe 11/08/2013
kernel: Workqueue: scsi_wq_7 sas_destruct_devices [libsas]
kernel:  0000000000000000 000000008e53c616 ffff880080d67bf8 ffffffff81574ec3
kernel:  0000000000000000 ffff880080d67c50 ffff880080d67c38 ffffffff81074e7a
kernel:  ffff880080d67c38 0000000000000000 ffffffff81893860 ffff8800c9bb2410
kernel: Call Trace:
kernel:  [<ffffffff81574ec3>] dump_stack+0x4c/0x6e
kernel:  [<ffffffff81074e7a>] warn_slowpath_common+0x8a/0xc0
kernel:  [<ffffffff81074f05>] warn_slowpath_fmt+0x55/0x70
kernel:  [<ffffffff8124fc0c>] ? kernfs_find_and_get_ns+0x4c/0x60
kernel:  [<ffffffff812533c1>] sysfs_remove_group+0xa1/0xb0
kernel:  [<ffffffff813ef747>] dpm_sysfs_remove+0x57/0x60
kernel:  [<ffffffff813e2d58>] device_del+0x58/0x270
kernel:  [<ffffffffa00874bf>] ? scsi_target_reap_ref_put+0x3f/0x50 [scsi_mod]
kernel:  [<ffffffff813e2f92>] device_unregister+0x22/0x80
kernel:  [<ffffffff812abd60>] bsg_unregister_queue+0x60/0xc0
kernel:  [<ffffffffa00587dc>] sas_rphy_remove+0x4c/0x80 [scsi_transport_sas]
kernel:  [<ffffffffa0058826>] sas_rphy_delete+0x16/0x30 [scsi_transport_sas]
kernel:  [<ffffffffa00a3a95>] sas_destruct_devices+0x65/0x90 [libsas]
kernel:  [<ffffffff8108dadb>] process_one_work+0x14b/0x470
kernel:  [<ffffffff8108e228>] worker_thread+0x48/0x4b0
kernel:  [<ffffffff8108e1e0>] ? init_pwq.part.7+0x10/0x10
kernel:  [<ffffffff8108e1e0>] ? init_pwq.part.7+0x10/0x10
kernel:  [<ffffffff810934b8>] kthread+0xd8/0xf0
kernel:  [<ffffffff810933e0>] ? kthread_worker_fn+0x170/0x170
kernel:  [<ffffffff8157a718>] ret_from_fork+0x58/0x90
kernel:  [<ffffffff810933e0>] ? kthread_worker_fn+0x170/0x170
kernel: ---[ end trace 82d1791291d041d3 ]---
kernel: ------------[ cut here ]------------
kernel: WARNING: CPU: 4 PID: 8386 at fs/sysfs/group.c:219 sysfs_remove_group+0xa1/0xb0()
kernel: sysfs group ffffffff81893860 not found for kobject 'end_device-7:5'
kernel: Modules linked in: nls_iso8859_4 nls_iso8859_1 nls_cp437 xt_tcpudp ip6t_rpfilter ip6t_REJECT nf_reject_ipv6 ipt_REJECT ...
kernel:  media crct10dif_pclmul crc32_pclmul ghash_clmulni_intel aesni_intel aes_x86_64 lrw gf128mul glue_helper ablk_helper cryptd ...
kernel: CPU: 4 PID: 8386 Comm: kworker/u16:9 Tainted: P        W  O    4.0.7-2-ARCH #1
kernel: Hardware name: Gigabyte Technology Co., Ltd. GA-990FXA-UD3/GA-990FXA-UD3, BIOS FFe 11/08/2013
kernel: Workqueue: scsi_wq_7 sas_destruct_devices [libsas]
kernel:  0000000000000000 000000008e53c616 ffff880080d67b88 ffffffff81574ec3
kernel:  0000000000000000 ffff880080d67be0 ffff880080d67bc8 ffffffff81074e7a
kernel:  ffff880080d67bc8 0000000000000000 ffffffff81893860 ffff880222fa8038
kernel: Call Trace:
kernel:  [<ffffffff81574ec3>] dump_stack+0x4c/0x6e
kernel:  [<ffffffff81074e7a>] warn_slowpath_common+0x8a/0xc0
kernel:  [<ffffffff81074f05>] warn_slowpath_fmt+0x55/0x70
kernel:  [<ffffffff8124fc0c>] ? kernfs_find_and_get_ns+0x4c/0x60
kernel:  [<ffffffff812533c1>] sysfs_remove_group+0xa1/0xb0
kernel:  [<ffffffff813ef747>] dpm_sysfs_remove+0x57/0x60
kernel:  [<ffffffff813e2d58>] device_del+0x58/0x270
kernel:  [<ffffffff813e2319>] ? device_remove_file+0x19/0x20
kernel:  [<ffffffff813ec67e>] attribute_container_class_device_del+0x1e/0x30
kernel:  [<ffffffff813ec892>] transport_remove_classdev+0x52/0x60
kernel:  [<ffffffff813ec840>] ? transport_add_class_device+0x40/0x40
kernel:  [<ffffffff813ec1ec>] attribute_container_device_trigger+0xdc/0xf0
kernel:  [<ffffffff813ec7f5>] transport_remove_device+0x15/0x20
kernel:  [<ffffffffa00587e4>] sas_rphy_remove+0x54/0x80 [scsi_transport_sas]
kernel:  [<ffffffffa0058826>] sas_rphy_delete+0x16/0x30 [scsi_transport_sas]
kernel:  [<ffffffffa00a3a95>] sas_destruct_devices+0x65/0x90 [libsas]
kernel:  [<ffffffff8108dadb>] process_one_work+0x14b/0x470
kernel:  [<ffffffff8108e228>] worker_thread+0x48/0x4b0
kernel:  [<ffffffff8108e1e0>] ? init_pwq.part.7+0x10/0x10
kernel:  [<ffffffff8108e1e0>] ? init_pwq.part.7+0x10/0x10
kernel:  [<ffffffff810934b8>] kthread+0xd8/0xf0
kernel:  [<ffffffff810933e0>] ? kthread_worker_fn+0x170/0x170
kernel:  [<ffffffff8157a718>] ret_from_fork+0x58/0x90
kernel:  [<ffffffff810933e0>] ? kthread_worker_fn+0x170/0x170
kernel: ---[ end trace 82d1791291d041d4 ]---
kernel: ------------[ cut here ]------------
kernel: WARNING: CPU: 4 PID: 8386 at fs/sysfs/group.c:219 sysfs_remove_group+0xa1/0xb0()
kernel: sysfs group ffffffff81893860 not found for kobject 'end_device-7:5'
kernel: Modules linked in: nls_iso8859_4 nls_iso8859_1 nls_cp437 xt_tcpudp ip6t_rpfilter ip6t_REJECT nf_reject_ipv6 ipt_REJECT ...
kernel:  media crct10dif_pclmul crc32_pclmul ghash_clmulni_intel aesni_intel aes_x86_64 lrw gf128mul glue_helper ablk_helper cryptd ...
kernel: CPU: 4 PID: 8386 Comm: kworker/u16:9 Tainted: P        W  O    4.0.7-2-ARCH #1
kernel: Hardware name: Gigabyte Technology Co., Ltd. GA-990FXA-UD3/GA-990FXA-UD3, BIOS FFe 11/08/2013
kernel: Workqueue: scsi_wq_7 sas_destruct_devices [libsas]
kernel:  0000000000000000 000000008e53c616 ffff880080d67b88 ffffffff81574ec3
kernel:  0000000000000000 ffff880080d67be0 ffff880080d67bc8 ffffffff81074e7a
kernel:  ffff880080d67bc8 0000000000000000 ffffffff81893860 ffff880222fa8438
kernel: Call Trace:
kernel:  [<ffffffff81574ec3>] dump_stack+0x4c/0x6e
kernel:  [<ffffffff81074e7a>] warn_slowpath_common+0x8a/0xc0
kernel:  [<ffffffff81074f05>] warn_slowpath_fmt+0x55/0x70
kernel:  [<ffffffff8124fc0c>] ? kernfs_find_and_get_ns+0x4c/0x60
kernel:  [<ffffffff812533c1>] sysfs_remove_group+0xa1/0xb0
kernel:  [<ffffffff813ef747>] dpm_sysfs_remove+0x57/0x60
kernel:  [<ffffffff813e2d58>] device_del+0x58/0x270
kernel:  [<ffffffff813e2319>] ? device_remove_file+0x19/0x20
kernel:  [<ffffffff813ec67e>] attribute_container_class_device_del+0x1e/0x30
kernel:  [<ffffffff813ec892>] transport_remove_classdev+0x52/0x60
kernel:  [<ffffffff813ec840>] ? transport_add_class_device+0x40/0x40
kernel:  [<ffffffff813ec1ec>] attribute_container_device_trigger+0xdc/0xf0
kernel:  [<ffffffff813ec7f5>] transport_remove_device+0x15/0x20
kernel:  [<ffffffffa00587e4>] sas_rphy_remove+0x54/0x80 [scsi_transport_sas]
kernel:  [<ffffffffa0058826>] sas_rphy_delete+0x16/0x30 [scsi_transport_sas]
kernel:  [<ffffffffa00a3a95>] sas_destruct_devices+0x65/0x90 [libsas]
kernel:  [<ffffffff8108dadb>] process_one_work+0x14b/0x470
kernel:  [<ffffffff8108e228>] worker_thread+0x48/0x4b0
kernel:  [<ffffffff8108e1e0>] ? init_pwq.part.7+0x10/0x10
kernel:  [<ffffffff8108e1e0>] ? init_pwq.part.7+0x10/0x10
kernel:  [<ffffffff810934b8>] kthread+0xd8/0xf0
kernel:  [<ffffffff810933e0>] ? kthread_worker_fn+0x170/0x170
kernel:  [<ffffffff8157a718>] ret_from_fork+0x58/0x90
kernel:  [<ffffffff810933e0>] ? kthread_worker_fn+0x170/0x170
kernel: ---[ end trace 82d1791291d041d5 ]---
kernel: ------------[ cut here ]------------
kernel: WARNING: CPU: 4 PID: 8386 at fs/sysfs/group.c:219 sysfs_remove_group+0xa1/0xb0()
kernel: sysfs group ffffffff81893860 not found for kobject 'end_device-7:5'
kernel: Modules linked in: nls_iso8859_4 nls_iso8859_1 nls_cp437 xt_tcpudp ip6t_rpfilter ip6t_REJECT nf_reject_ipv6 ipt_REJECT ...
kernel:  media crct10dif_pclmul crc32_pclmul ghash_clmulni_intel aesni_intel aes_x86_64 lrw gf128mul glue_helper ablk_helper cryptd ...
kernel: CPU: 4 PID: 8386 Comm: kworker/u16:9 Tainted: P        W  O    4.0.7-2-ARCH #1
kernel: Hardware name: Gigabyte Technology Co., Ltd. GA-990FXA-UD3/GA-990FXA-UD3, BIOS FFe 11/08/2013
kernel: Workqueue: scsi_wq_7 sas_destruct_devices [libsas]
kernel:  0000000000000000 000000008e53c616 ffff880080d67c38 ffffffff81574ec3
kernel:  0000000000000000 ffff880080d67c90 ffff880080d67c78 ffffffff81074e7a
kernel:  ffff880080d67c78 0000000000000000 ffffffff81893860 ffff880222ec7c10
kernel: Call Trace:
kernel:  [<ffffffff81574ec3>] dump_stack+0x4c/0x6e
kernel:  [<ffffffff81074e7a>] warn_slowpath_common+0x8a/0xc0
kernel:  [<ffffffff81074f05>] warn_slowpath_fmt+0x55/0x70
kernel:  [<ffffffff8124fc0c>] ? kernfs_find_and_get_ns+0x4c/0x60
kernel:  [<ffffffff812533c1>] sysfs_remove_group+0xa1/0xb0
kernel:  [<ffffffff813ef747>] dpm_sysfs_remove+0x57/0x60
kernel:  [<ffffffff813e2d58>] device_del+0x58/0x270
kernel:  [<ffffffffa00587ec>] sas_rphy_remove+0x5c/0x80 [scsi_transport_sas]
kernel:  [<ffffffffa0058826>] sas_rphy_delete+0x16/0x30 [scsi_transport_sas]
kernel:  [<ffffffffa00a3a95>] sas_destruct_devices+0x65/0x90 [libsas]
kernel:  [<ffffffff8108dadb>] process_one_work+0x14b/0x470
kernel:  [<ffffffff8108e228>] worker_thread+0x48/0x4b0
kernel:  [<ffffffff8108e1e0>] ? init_pwq.part.7+0x10/0x10
kernel:  [<ffffffff8108e1e0>] ? init_pwq.part.7+0x10/0x10
kernel:  [<ffffffff810934b8>] kthread+0xd8/0xf0
kernel:  [<ffffffff810933e0>] ? kthread_worker_fn+0x170/0x170
kernel:  [<ffffffff8157a718>] ret_from_fork+0x58/0x90
kernel:  [<ffffffff810933e0>] ? kthread_worker_fn+0x170/0x170
kernel: ---[ end trace 82d1791291d041d6 ]---




Those disks were removed from HighPoint RocketRAID 2760 controller using mvsas driver
06:00.0 RAID bus controller [0104]: HighPoint Technologies, Inc. Device [1103:2760] (rev c2)
Comment 3 Dāvis 2016-02-05 17:01:26 UTC 
This still happens with 4.4.0
When removing disk

kernel: /mnt/Linux/linux/drivers/scsi/mvsas/mv_sas.c 1913:phy3 Removed Device
kernel: ------------[ cut here ]------------
kernel: WARNING: CPU: 3 PID: 16820 at /mnt/Linux/linux/fs/sysfs/group.c:237 sysfs_remove_group+0x8b/0x90()
kernel: sysfs group ffffffff818a3b60 not found for kobject 'end_device-7:7'
kernel: Modules linked in: fuse nf_conntrack_netbios_ns nf_conntrack_broadcast xt_tcpudp ip6t_rpfilter ip6t_REJECT nf_reject_ipv6 ipt_REJECT nf_reject_ipv4 xt_conntrack ip_set nfnetlink ebtable_bro
kernel:  snd_usbmidi_lib videobuf2_v4l2 snd_rawmidi snd_seq_device mousedev gf128mul input_leds joydev led_class glue_helper snd_hda_codec_hdmi snd_hda_codec_realtek videobuf2_core r8169 v4l2_commo
kernel:  libsas libahci scsi_transport_sas syscopyarea sysfillrect sysimgblt fb_sys_fops drm libata usbcore usb_common scsi_mod i2c_core wmi i8042 serio button ip_tables x_tables [last unloaded: dr
kernel: CPU: 3 PID: 16820 Comm: kworker/u16:8 Tainted: P        W  O    4.4.0-ARCH-dirty #1
kernel: Hardware name: Gigabyte Technology Co., Ltd. GA-990FXA-UD3/GA-990FXA-UD3, BIOS FFe 11/08/2013
kernel: Workqueue: scsi_wq_7 sas_destruct_devices [libsas]
kernel:  0000000000000000 00000000ad666a1d ffff8801d3103c50 ffffffff812bf949
kernel:  ffff8801d3103c98 ffff8801d3103c88 ffffffff810764f2 0000000000000000
kernel:  ffffffff818a3b60 ffff88021cb30410 ffff8800cd642828 ffff8800cd6427f8
kernel: Call Trace:
kernel:  [<ffffffff812bf949>] dump_stack+0x4b/0x72
kernel:  [<ffffffff810764f2>] warn_slowpath_common+0x82/0xc0
kernel:  [<ffffffff8107658c>] warn_slowpath_fmt+0x5c/0x80
kernel:  [<ffffffff8124eeb8>] ? kernfs_find_and_get_ns+0x48/0x60
kernel:  [<ffffffff8125258b>] sysfs_remove_group+0x8b/0x90
kernel:  [<ffffffff813e8207>] dpm_sysfs_remove+0x57/0x60
kernel:  [<ffffffff813db6f8>] device_del+0x58/0x260
kernel:  [<ffffffff813db91e>] device_unregister+0x1e/0x60
kernel:  [<ffffffff812ab410>] bsg_unregister_queue+0x60/0xb0
kernel:  [<ffffffffa00e65f8>] sas_rphy_remove+0x48/0x70 [scsi_transport_sas]
kernel:  [<ffffffffa00e6632>] sas_rphy_delete+0x12/0x20 [scsi_transport_sas]
kernel:  [<ffffffffa0054823>] sas_destruct_devices+0x63/0x90 [libsas]
kernel:  [<ffffffff8108e15b>] process_one_work+0x14b/0x440
kernel:  [<ffffffff8108e498>] worker_thread+0x48/0x4a0
kernel:  [<ffffffff8108e450>] ? process_one_work+0x440/0x440
kernel:  [<ffffffff8108e450>] ? process_one_work+0x440/0x440
kernel:  [<ffffffff81093f38>] kthread+0xd8/0xf0
kernel:  [<ffffffff81093e60>] ? kthread_worker_fn+0x170/0x170
kernel:  [<ffffffff8157cc0f>] ret_from_fork+0x3f/0x70
kernel:  [<ffffffff81093e60>] ? kthread_worker_fn+0x170/0x170
kernel: ---[ end trace 640cb81c5c1e9aa7 ]---
kernel: ------------[ cut here ]------------
kernel: WARNING: CPU: 4 PID: 16820 at /mnt/Linux/linux/fs/sysfs/group.c:237 sysfs_remove_group+0x8b/0x90()
kernel: sysfs group ffffffff818a3b60 not found for kobject 'end_device-7:7'
kernel: Modules linked in: fuse nf_conntrack_netbios_ns nf_conntrack_broadcast xt_tcpudp ip6t_rpfilter ip6t_REJECT nf_reject_ipv6 ipt_REJECT nf_reject_ipv4 xt_conntrack ip_set nfnetlink ebtable_bro
kernel:  snd_usbmidi_lib videobuf2_v4l2 snd_rawmidi snd_seq_device mousedev gf128mul input_leds joydev led_class glue_helper snd_hda_codec_hdmi snd_hda_codec_realtek videobuf2_core r8169 v4l2_commo
kernel:  libsas libahci scsi_transport_sas syscopyarea sysfillrect sysimgblt fb_sys_fops drm libata usbcore usb_common scsi_mod i2c_core wmi i8042 serio button ip_tables x_tables [last unloaded: dr
kernel: CPU: 4 PID: 16820 Comm: kworker/u16:8 Tainted: P        W  O    4.4.0-ARCH-dirty #1
kernel: Hardware name: Gigabyte Technology Co., Ltd. GA-990FXA-UD3/GA-990FXA-UD3, BIOS FFe 11/08/2013
kernel: Workqueue: scsi_wq_7 sas_destruct_devices [libsas]
kernel:  0000000000000000 00000000ad666a1d ffff8801d3103bf8 ffffffff812bf949
kernel:  ffff8801d3103c40 ffff8801d3103c30 ffffffff810764f2 0000000000000000
kernel:  ffffffff818a3b60 ffff88021c6dd038 ffff8800cd642828 ffff8800cd6427f8
kernel: Call Trace:
kernel:  [<ffffffff812bf949>] dump_stack+0x4b/0x72
kernel:  [<ffffffff810764f2>] warn_slowpath_common+0x82/0xc0
kernel:  [<ffffffff8107658c>] warn_slowpath_fmt+0x5c/0x80
kernel:  [<ffffffff8124eeb8>] ? kernfs_find_and_get_ns+0x48/0x60
kernel:  [<ffffffff8117b4e2>] ? kfree_const+0x22/0x30
kernel:  [<ffffffff8125258b>] sysfs_remove_group+0x8b/0x90
kernel:  [<ffffffff813e8207>] dpm_sysfs_remove+0x57/0x60
kernel:  [<ffffffff813db6f8>] device_del+0x58/0x260
kernel:  [<ffffffff813dac79>] ? device_remove_file+0x19/0x20
kernel:  [<ffffffff813e507a>] attribute_container_class_device_del+0x1a/0x20
kernel:  [<ffffffff813e526e>] transport_remove_classdev+0x4e/0x60
kernel:  [<ffffffff813e5220>] ? transport_add_class_device+0x40/0x40
kernel:  [<ffffffff813e4c5e>] attribute_container_device_trigger+0xce/0xe0
kernel:  [<ffffffff813e51d5>] transport_remove_device+0x15/0x20
kernel:  [<ffffffffa00e6600>] sas_rphy_remove+0x50/0x70 [scsi_transport_sas]
kernel:  [<ffffffffa00e6632>] sas_rphy_delete+0x12/0x20 [scsi_transport_sas]
kernel:  [<ffffffffa0054823>] sas_destruct_devices+0x63/0x90 [libsas]
kernel:  [<ffffffff8108e15b>] process_one_work+0x14b/0x440
kernel:  [<ffffffff8108e498>] worker_thread+0x48/0x4a0
kernel:  [<ffffffff8108e450>] ? process_one_work+0x440/0x440
kernel:  [<ffffffff8108e450>] ? process_one_work+0x440/0x440
kernel:  [<ffffffff81093f38>] kthread+0xd8/0xf0
kernel:  [<ffffffff81093e60>] ? kthread_worker_fn+0x170/0x170
kernel:  [<ffffffff8157cc0f>] ret_from_fork+0x3f/0x70
kernel:  [<ffffffff81093e60>] ? kthread_worker_fn+0x170/0x170
kernel: ---[ end trace 640cb81c5c1e9aa8 ]---
kernel: ------------[ cut here ]------------
kernel: WARNING: CPU: 4 PID: 16820 at /mnt/Linux/linux/fs/sysfs/group.c:237 sysfs_remove_group+0x8b/0x90()
kernel: sysfs group ffffffff818a3b60 not found for kobject 'end_device-7:7'
kernel: Modules linked in: fuse nf_conntrack_netbios_ns nf_conntrack_broadcast xt_tcpudp ip6t_rpfilter ip6t_REJECT nf_reject_ipv6 ipt_REJECT nf_reject_ipv4 xt_conntrack ip_set nfnetlink ebtable_bro
kernel:  snd_usbmidi_lib videobuf2_v4l2 snd_rawmidi snd_seq_device mousedev gf128mul input_leds joydev led_class glue_helper snd_hda_codec_hdmi snd_hda_codec_realtek videobuf2_core r8169 v4l2_commo
kernel:  libsas libahci scsi_transport_sas syscopyarea sysfillrect sysimgblt fb_sys_fops drm libata usbcore usb_common scsi_mod i2c_core wmi i8042 serio button ip_tables x_tables [last unloaded: dr
kernel: CPU: 4 PID: 16820 Comm: kworker/u16:8 Tainted: P        W  O    4.4.0-ARCH-dirty #1
kernel: Hardware name: Gigabyte Technology Co., Ltd. GA-990FXA-UD3/GA-990FXA-UD3, BIOS FFe 11/08/2013
kernel: Workqueue: scsi_wq_7 sas_destruct_devices [libsas]
kernel:  0000000000000000 00000000ad666a1d ffff8801d3103c88 ffffffff812bf949
kernel:  ffff8801d3103cd0 ffff8801d3103cc0 ffffffff810764f2 0000000000000000
kernel:  ffffffff818a3b60 ffff88021c6dcc10 ffff8800cd642828 ffff8800cd6427f8
kernel: Call Trace:
kernel:  [<ffffffff812bf949>] dump_stack+0x4b/0x72
kernel:  [<ffffffff810764f2>] warn_slowpath_common+0x82/0xc0
kernel:  [<ffffffff8107658c>] warn_slowpath_fmt+0x5c/0x80
kernel:  [<ffffffff8124eeb8>] ? kernfs_find_and_get_ns+0x48/0x60
kernel:  [<ffffffff8117b4e2>] ? kfree_const+0x22/0x30
kernel:  [<ffffffff8125258b>] sysfs_remove_group+0x8b/0x90
kernel:  [<ffffffff813e8207>] dpm_sysfs_remove+0x57/0x60
kernel:  [<ffffffff813db6f8>] device_del+0x58/0x260
kernel:  [<ffffffffa00e6608>] sas_rphy_remove+0x58/0x70 [scsi_transport_sas]
kernel:  [<ffffffffa00e6632>] sas_rphy_delete+0x12/0x20 [scsi_transport_sas]
kernel:  [<ffffffffa0054823>] sas_destruct_devices+0x63/0x90 [libsas]
kernel:  [<ffffffff8108e15b>] process_one_work+0x14b/0x440
kernel:  [<ffffffff8108e498>] worker_thread+0x48/0x4a0
kernel:  [<ffffffff8108e450>] ? process_one_work+0x440/0x440
kernel:  [<ffffffff8108e450>] ? process_one_work+0x440/0x440
kernel:  [<ffffffff81093f38>] kthread+0xd8/0xf0
kernel:  [<ffffffff81093e60>] ? kthread_worker_fn+0x170/0x170
kernel:  [<ffffffff8157cc0f>] ret_from_fork+0x3f/0x70
kernel:  [<ffffffff81093e60>] ? kthread_worker_fn+0x170/0x170
kernel: ---[ end trace 640cb81c5c1e9aaa ]---
kernel: /mnt/Linux/linux/drivers/scsi/mvsas/mv_sas.c 1257:found dev[3:5] is gone.
kernel: /mnt/Linux/linux/drivers/scsi/mvsas/mv_sas.c 1975:phy 7 ctrl sts=0x00111000.
kernel: /mnt/Linux/linux/drivers/scsi/mvsas/mv_sas.c 1977:phy 7 irq sts = 0x00000081
kernel: /mnt/Linux/linux/drivers/scsi/mvsas/mv_sas.c 1961:Get signature time out, reset phy 7
kernel: /mnt/Linux/linux/drivers/scsi/mvsas/mv_sas.c 1975:phy 7 ctrl sts=0x00000000.
kernel: /mnt/Linux/linux/drivers/scsi/mvsas/mv_sas.c 1977:phy 7 irq sts = 0x00001001
kernel: /mnt/Linux/linux/drivers/scsi/mvsas/mv_sas.c 1975:phy 7 ctrl sts=0x00111000.
kernel: /mnt/Linux/linux/drivers/scsi/mvsas/mv_sas.c 1977:phy 7 irq sts = 0x00000081
kernel: /mnt/Linux/linux/drivers/scsi/mvsas/mv_94xx.c 837:get all reg link rate is 0x111000
kernel: /mnt/Linux/linux/drivers/scsi/mvsas/mv_94xx.c 842:get link rate is 9
kernel: mvsas 0000:07:00.0: Phy3 : No sig fis
kernel: /mnt/Linux/linux/drivers/scsi/mvsas/mv_sas.c 1919:phy3 Attached Device
kernel: /mnt/Linux/linux/drivers/scsi/mvsas/mv_sas.c 1975:phy 7 ctrl sts=0x00111000.
kernel: /mnt/Linux/linux/drivers/scsi/mvsas/mv_sas.c 1977:phy 7 irq sts = 0x00010000
kernel: /mnt/Linux/linux/drivers/scsi/mvsas/mv_sas.c 2026:notify plug in on phy[3]
kernel: /mnt/Linux/linux/drivers/scsi/mvsas/mv_94xx.c 837:get all reg link rate is 0x111000
kernel: /mnt/Linux/linux/drivers/scsi/mvsas/mv_94xx.c 842:get link rate is 9
kernel: /mnt/Linux/linux/drivers/scsi/mvsas/mv_sas.c 1079:phy 7 attach dev info is 20001
kernel: /mnt/Linux/linux/drivers/scsi/mvsas/mv_sas.c 1081:phy 7 attach sas addr is 7
kernel: /mnt/Linux/linux/drivers/scsi/mvsas/mv_sas.c 277:phy 7 byte dmaded.
kernel: sas: phy-7:7 added to port-7:7, phy_mask:0x8 ( 700000000000000)
kernel: sas: DOING DISCOVERY on port 7, pid:11432
kernel: sas: DONE DISCOVERY on port 7, pid:11432, result:0
kernel: sas: Enter sas_scsi_recover_host busy: 0 failed: 0
kernel: sas: ata7: end_device-7:0: dev error handler
kernel: sas: ata8: end_device-7:1: dev error handler
kernel: sas: ata9: end_device-7:2: dev error handler
kernel: sas: ata10: end_device-7:3: dev error handler
kernel: sas: ata11: end_device-7:4: dev error handler
kernel: sas: ata12: end_device-7:5: dev error handler
kernel: sas: ata13: end_device-7:6: dev error handler
kernel: sas: ata20: end_device-7:7: dev error handler
kernel: sas: --- Exit sas_scsi_recover_host: busy: 0 failed: 0 tries: 1
Comment 4 Yijing Wang 2016-02-06 01:20:11 UTC 
I also found the same issue when remove my disk in my platform, I think the code logic is incorrect, this call trace would appear every disk remove. I found  Dan Williams posted a fix patch, but it was not merged to kernel.

https://www.mail-archive.com/linux-scsi@vger.kernel.org/msg39187.html

Following is my call trace:

WARNING: CPU: 2 PID: 6 at fs/sysfs/group.c:224 sysfs_remove_group+0x9c/0xa0()
sysfs group (power)ffff800000a2dbe8 not found for kobject '0:0:1:0'
Modules linked in:
CPU: 2 PID: 6 Comm: kworker/u64:0 Not tainted 4.1.6+ #157
Hardware name: Hisilicon PhosphorV660 Development Board (DT)
Workqueue: scsi_wq_0 sas_destruct_devices
Call trace:
[<ffff800000089918>] dump_backtrace+0x0/0x124
[<ffff800000089a4c>] show_stack+0x10/0x1c
[<ffff8000006ecd10>] dump_stack+0x78/0x98
[<ffff80000009fc38>] warn_slowpath_common+0x98/0xd0
[<ffff80000009fcbc>] warn_slowpath_fmt+0x4c/0x58
[<ffff8000001fc190>] sysfs_remove_group+0x98/0xa0
[<ffff8000003d7afc>] dpm_sysfs_remove+0x54/0x68
[<ffff8000003cca20>] device_del+0x3c/0x208
[<ffff8000003ccbfc>] device_unregister+0x10/0x2c
[<ffff800000307810>] bsg_unregister_queue+0xbc/0xf8
[<ffff8000003fa3b0>] __scsi_remove_device+0x9c/0xbc
[<ffff8000003fa414>] scsi_remove_device+0x44/0x64
[<ffff8000003fa604>] scsi_remove_target+0x198/0x258
[<ffff80000040c090>] sas_rphy_remove+0x8c/0xb4
[<ffff80000040c0ec>] sas_rphy_delete+0x34/0x54
[<ffff8000004102d0>] sas_destruct_devices+0x60/0x98
[<ffff8000000b5490>] process_one_work+0x13c/0x344
[<ffff8000000b57d4>] worker_thread+0x13c/0x494
[<ffff8000000bafb8>] kthread+0xd8/0xf0