** Also affects: ubuntu-z-systems
Importance: Undecided
Status: New
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https://bugs.launchpad.net/bugs/1929923
Title:
[UBUNTU 20.04] LPAR becomes unresponsive after the Kernel panic -
rq_qos_wake_function
Status in Ubuntu on IBM z Systems:
New
Status in linux package in Ubuntu:
New
Bug description:
---Problem Description---
kernel panic rq_qos_wake_function
---uname output---
Linux version 5.4.0-71-generic
Machine Type = s390x
---Debugger---
A debugger is not configured
Stack trace output:
May 15 20:21:04 data1 kernel: Call Trace:
May 15 20:21:04 data1 kernel: ([<000000234091e670>] 0x234091e670)
May 15 20:21:04 data1 kernel: [<0000003e10047e3a>]
rq_qos_wake_function+0x8a/0xa0
May 15 20:21:04 data1 kernel: [<0000003e0fbec482>]
__wake_up_common+0xa2/0x1b0
May 15 20:21:04 data1 kernel: [<0000003e0fbec984>]
__wake_up_common_lock+0x94/0xe0
May 15 20:21:04 data1 kernel: [<0000003e0fbec9fa>] __wake_up+0x2a/0x40
May 15 20:21:04 data1 kernel: [<0000003e1005ee70>] wbt_done+0x90/0xe0
May 15 20:21:04 data1 kernel: [<0000003e10047f42>] __rq_qos_done+0x42/0x60
May 15 20:21:04 data1 kernel: [<0000003e10033cb0>]
blk_mq_free_request+0xe0/0x140
May 15 20:21:04 data1 kernel: [<0000003e101d46f0>]
dm_softirq_done+0x140/0x230
May 15 20:21:04 data1 kernel: [<0000003e100326c0>]
blk_done_softirq+0xc0/0xe0
May 15 20:21:04 data1 kernel: [<0000003e103fc084>] __do_softirq+0x104/0x360
May 15 20:21:04 data1 kernel: [<0000003e0fb9da1e>] irq_exit+0x9e/0xc0
May 15 20:21:04 data1 kernel: [<0000003e0fb28ae8>] do_IRQ+0x78/0xb0
May 15 20:21:04 data1 kernel: [<0000003e103fb588>]
ext_int_handler+0x130/0x134
May 15 20:21:04 data1 kernel: [<0000003e101d4416>] dm_mq_queue_rq+0x36/0x1d0
May 15 20:21:04 data1 kernel: Last Breaking-Event-Address:
May 15 20:21:04 data1 kernel: [<0000003e0fbce75e>] wake_up_process+0xe/0x20
May 15 20:21:04 data1 kernel: Kernel panic - not syncing: Fatal exception in
interrupt
Oops output:
no
System Dump Info:
The system was configured to capture a dump, however a dump was not
produced.
-Attach sysctl -a output output to the bug.
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