FYI,
This issue is reported on Ubuntu 16.04.4 TLS kernel - Hardware
Enablement (HWE) on cavium server by our test team
Regards/Murthy Bhat
** Changed in: linux (Ubuntu)
Status: Incomplete => Confirmed
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https://bugs.launchpad.net/bugs/1781578
Title:
Call trace observed while disabling PD on Ubuntu 16.04.4
Status in linux package in Ubuntu:
Confirmed
Bug description:
I am working on smartpqi linux driver for Microsemi.
We have a storage controller managment application tool to manage storage
behind our controller. One of the application option what we have is to disable
physical device(PD).
During disable PD opertaion, Disable PD command got timedout. Then I observed
below mentioned call trace in dmesg log.
Please note we are running IO stress test on the PD which is being disabled.
Please let me know if there are any known issues specific to Ubuntu kernel
with respect to this.
If its a known issue specific to Ubuntu 16.04.4 distro, does this issue
already addressed in latest Ubuntu OS distro ?
Thanks in advance!
Sincerely,
Murthy Bhat
Call trace:
smartpqi 0000:92:00.0: removed 5:0:2:0 30000d1701cf2001 Direct-Access ATA
ST1000NX0303 AIO+ qd=32
[ 1199.201495] Buffer I/O error on dev sdk, logical block 244190645, async
page read
[ 1343.006515] sdn:
[ 1358.264503] INFO: task kworker/173:1:1620 blocked for more than 120
seconds.
[ 1358.271550] Tainted: G OE 4.13.0-36-generic #40~16.04.1-Ubuntu
[ 1358.278966] "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables
this message.
[ 1358.286806] kworker/173:1 D 0 1620 2 0x00000000
[ 1358.286832] Workqueue: events pqi_rescan_worker [smartpqi]
[ 1358.286836] Call trace:
[ 1358.286844] [<ffff000008086068>] __switch_to+0x90/0xa8
[ 1358.286855] [<ffff000008a761c4>] __schedule+0x35c/0x8b0
[ 1358.286858] [<ffff000008a7674c>] schedule+0x34/0x90
[ 1358.286865] [<ffff0000084ccaa8>] blk_mq_freeze_queue_wait+0x70/0xd8
[ 1358.286869] [<ffff0000084cd230>] blk_mq_freeze_queue+0x28/0x38
[ 1358.286873] [<ffff0000084cd498>] blk_freeze_queue+0x20/0x30
[ 1358.286878] [<ffff0000084bd830>] blk_cleanup_queue+0x78/0x128
[ 1358.286883] [<ffff000008764f3c>] __scsi_remove_device+0x64/0x128
[ 1358.286884] [<ffff000008765030>] scsi_remove_device+0x30/0x48
[ 1358.286887] [<ffff000008765228>] scsi_remove_target+0x188/0x1c8
[ 1358.286899] [<ffff000000bcbc08>] sas_rphy_remove+0x78/0x98
[scsi_transport_sas]
[ 1358.286907] [<ffff000000bcdbd8>] sas_port_delete+0x38/0x160
[scsi_transport_sas]
[ 1358.286918] [<ffff00000141a32c>] pqi_free_sas_port+0x4c/0x88 [smartpqi]
[ 1358.286926] [<ffff00000141a6fc>] pqi_remove_sas_device+0x24/0x38 [smartpqi]
[ 1358.286933] [<ffff000001413b80>] pqi_update_device_list+0x520/0x818
[smartpqi]
[ 1358.286939] [<ffff000001415af8>] pqi_scan_scsi_devices+0x420/0x980
[smartpqi]
[ 1358.286946] [<ffff0000014160b4>] pqi_rescan_worker+0x24/0x30 [smartpqi]
[ 1358.286955] [<ffff0000080f3dfc>] process_one_work+0x14c/0x420
[ 1358.286957] [<ffff0000080f41fc>] worker_thread+0x12c/0x470
[ 1358.286961] [<ffff0000080fae80>] kthread+0x108/0x138
[ 1358.286963] [<ffff0000080838e0>] ret_from_fork+0x10/0x30
[ 1358.287045] INFO: task pain:6788 blocked for more than 120 seconds.
[ 1358.293326] Tainted: G OE 4.13.0-36-generic #40~16.04.1-Ubuntu
[ 1358.300730] "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables
this message.
[ 1358.308567] pain D 0 6788 6633 0x00000000
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