Public bug reported:
After poking/hacking through bug 1551937, I'm able to get through the MAAS
install of my xenial system 'gregory-ppc64'.
It hangs on boot though with the attached console log.
For google, the start of what looks sour is:
[ 41.113758] sd 0:2:5:0: alua: port group c29c state A preferred supports
TOlUSNA
[ 61.000096] INFO: rcu_sched self-detected stall on CPU[ 61.000109]
23-...: (2 GPs behind) idle=a8f/2/0 softirq=176/177 fqs=5245
[ 61.000109] (t=5251 jiffies g=-94 c=-95 q=10862)
[ 61.000140] Task dump for CPU 23:
[ 61.000141] swapper/23 R running task 0 0 1 0x00000804
[ 61.000145] Call Trace:
[ 61.000154] [c000000ff081f090] [c0000000000fb740] sched_show_task+0xe0/0x180
(unreliable)
[ 61.000159] [c000000ff081f100] [c00000000013e594]
rcu_dump_cpu_stacks+0xe4/0x150
[ 61.000162] [c000000ff081f150] [c000000000143ca4]
rcu_check_callbacks+0x6b4/0x9b0
[ 61.000164] [c000000ff081f280] [c00000000014bb08]
update_process_times+0x58/0xa0
[ 61.000168] [c000000ff081f2b0] [c000000000162bb8]
tick_sched_handle.isra.6+0x48/0xe0
[ 61.000171] [c000000ff081f2f0] [c000000000162cb4] tick_sched_timer+0x64/0xd0
[ 61.000173] [c000000ff081f330] [c00000000014c634]
__hrtimer_run_queues+0x134/0x470
[ 61.000176] [c000000ff081f3c0] [c00000000014d66c]
hrtimer_interrupt+0xec/0x2c0
[ 61.000182] [c000000ff081f480] [c00000000001f59c]
__timer_interrupt+0x8c/0x290
[ 61.000184] [c000000ff081f4d0] [c00000000001f950] timer_interrupt+0xa0/0xe0
[ 61.000186] [c000000ff081f500] [c000000000002714]
decrementer_common+0x114/0x180
[ 61.000189] --- interrupt: 901 at queue_work_on+0xc8/0xf0
[ 61.000189] LR = queue_work_on+0xbc/0xf0
[ 61.000193] [c000000ff081f7f0] [c00000000060bd94]
cursor_timer_handler+0x44/0x80 (unreliable)
[ 61.000195] [c000000ff081f820] [c000000000149d3c] call_timer_fn+0x5c/0x1c0
[ 61.000197] [c000000ff081f8b0] [c00000000014a1fc]
run_timer_softirq+0x31c/0x3f0
[ 61.000200] [c000000ff081f980] [c0000000000be9b8] __do_softirq+0x188/0x3e0
[ 61.000203] [c000000ff081fa70] [c0000000000bee88] irq_exit+0xc8/0x100
[ 61.000206] [c000000ff081fa90] [c00000000001f954] timer_interrupt+0xa4/0xe0
[ 61.000212] [c000000ff081fac0] [c000000000002714]
decrementer_common+0x114/0x180
** Affects: linux (Ubuntu)
Importance: High
Status: Confirmed
** Affects: linux (Ubuntu Xenial)
Importance: High
Status: Confirmed
** Attachment added: "boot log from hvc0"
https://bugs.launchpad.net/bugs/1552319/+attachment/4586699/+files/boot.log
** Description changed:
After poking/hacking through bug 1551937, I'm able to get through the MAAS
install of my xenial system 'gregory-ppc64'.
It hangs on boot though with the attached console log.
+
+ For google, the start of what looks sour is:
+ [ 41.113758] sd 0:2:5:0: alua: port group c29c state A preferred supports
TOlUSNA
+ [ 61.000096] INFO: rcu_sched self-detected stall on CPU[ 61.000109]
23-...: (2 GPs behind) idle=a8f/2/0 softirq=176/177 fqs=5245
+ [ 61.000109] (t=5251 jiffies g=-94 c=-95 q=10862)
+ [ 61.000140] Task dump for CPU 23:
+ [ 61.000141] swapper/23 R running task 0 0 1
0x00000804
+ [ 61.000145] Call Trace:
+ [ 61.000154] [c000000ff081f090] [c0000000000fb740]
sched_show_task+0xe0/0x180 (unreliable)
+ [ 61.000159] [c000000ff081f100] [c00000000013e594]
rcu_dump_cpu_stacks+0xe4/0x150
+ [ 61.000162] [c000000ff081f150] [c000000000143ca4]
rcu_check_callbacks+0x6b4/0x9b0
+ [ 61.000164] [c000000ff081f280] [c00000000014bb08]
update_process_times+0x58/0xa0
+ [ 61.000168] [c000000ff081f2b0] [c000000000162bb8]
tick_sched_handle.isra.6+0x48/0xe0
+ [ 61.000171] [c000000ff081f2f0] [c000000000162cb4]
tick_sched_timer+0x64/0xd0
+ [ 61.000173] [c000000ff081f330] [c00000000014c634]
__hrtimer_run_queues+0x134/0x470
+ [ 61.000176] [c000000ff081f3c0] [c00000000014d66c]
hrtimer_interrupt+0xec/0x2c0
+ [ 61.000182] [c000000ff081f480] [c00000000001f59c]
__timer_interrupt+0x8c/0x290
+ [ 61.000184] [c000000ff081f4d0] [c00000000001f950] timer_interrupt+0xa0/0xe0
+ [ 61.000186] [c000000ff081f500] [c000000000002714]
decrementer_common+0x114/0x180
+ [ 61.000189] --- interrupt: 901 at queue_work_on+0xc8/0xf0
+ [ 61.000189] LR = queue_work_on+0xbc/0xf0
+ [ 61.000193] [c000000ff081f7f0] [c00000000060bd94]
cursor_timer_handler+0x44/0x80 (unreliable)
+ [ 61.000195] [c000000ff081f820] [c000000000149d3c] call_timer_fn+0x5c/0x1c0
+ [ 61.000197] [c000000ff081f8b0] [c00000000014a1fc]
run_timer_softirq+0x31c/0x3f0
+ [ 61.000200] [c000000ff081f980] [c0000000000be9b8] __do_softirq+0x188/0x3e0
+ [ 61.000203] [c000000ff081fa70] [c0000000000bee88] irq_exit+0xc8/0x100
+ [ 61.000206] [c000000ff081fa90] [c00000000001f954] timer_interrupt+0xa4/0xe0
+ [ 61.000212] [c000000ff081fac0] [c000000000002714]
decrementer_common+0x114/0x180
** Also affects: linux (Ubuntu Xenial)
Importance: Undecided
Status: New
** Changed in: linux (Ubuntu Xenial)
Status: New => Confirmed
** Changed in: linux (Ubuntu Xenial)
Importance: Undecided => High
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https://bugs.launchpad.net/bugs/1552319
Title:
boot failure on power8 powerNV
Status in linux package in Ubuntu:
Confirmed
Status in linux source package in Xenial:
Confirmed
Bug description:
After poking/hacking through bug 1551937, I'm able to get through the MAAS
install of my xenial system 'gregory-ppc64'.
It hangs on boot though with the attached console log.
For google, the start of what looks sour is:
[ 41.113758] sd 0:2:5:0: alua: port group c29c state A preferred supports
TOlUSNA
[ 61.000096] INFO: rcu_sched self-detected stall on CPU[ 61.000109]
23-...: (2 GPs behind) idle=a8f/2/0 softirq=176/177 fqs=5245
[ 61.000109] (t=5251 jiffies g=-94 c=-95 q=10862)
[ 61.000140] Task dump for CPU 23:
[ 61.000141] swapper/23 R running task 0 0 1
0x00000804
[ 61.000145] Call Trace:
[ 61.000154] [c000000ff081f090] [c0000000000fb740]
sched_show_task+0xe0/0x180 (unreliable)
[ 61.000159] [c000000ff081f100] [c00000000013e594]
rcu_dump_cpu_stacks+0xe4/0x150
[ 61.000162] [c000000ff081f150] [c000000000143ca4]
rcu_check_callbacks+0x6b4/0x9b0
[ 61.000164] [c000000ff081f280] [c00000000014bb08]
update_process_times+0x58/0xa0
[ 61.000168] [c000000ff081f2b0] [c000000000162bb8]
tick_sched_handle.isra.6+0x48/0xe0
[ 61.000171] [c000000ff081f2f0] [c000000000162cb4]
tick_sched_timer+0x64/0xd0
[ 61.000173] [c000000ff081f330] [c00000000014c634]
__hrtimer_run_queues+0x134/0x470
[ 61.000176] [c000000ff081f3c0] [c00000000014d66c]
hrtimer_interrupt+0xec/0x2c0
[ 61.000182] [c000000ff081f480] [c00000000001f59c]
__timer_interrupt+0x8c/0x290
[ 61.000184] [c000000ff081f4d0] [c00000000001f950] timer_interrupt+0xa0/0xe0
[ 61.000186] [c000000ff081f500] [c000000000002714]
decrementer_common+0x114/0x180
[ 61.000189] --- interrupt: 901 at queue_work_on+0xc8/0xf0
[ 61.000189] LR = queue_work_on+0xbc/0xf0
[ 61.000193] [c000000ff081f7f0] [c00000000060bd94]
cursor_timer_handler+0x44/0x80 (unreliable)
[ 61.000195] [c000000ff081f820] [c000000000149d3c] call_timer_fn+0x5c/0x1c0
[ 61.000197] [c000000ff081f8b0] [c00000000014a1fc]
run_timer_softirq+0x31c/0x3f0
[ 61.000200] [c000000ff081f980] [c0000000000be9b8] __do_softirq+0x188/0x3e0
[ 61.000203] [c000000ff081fa70] [c0000000000bee88] irq_exit+0xc8/0x100
[ 61.000206] [c000000ff081fa90] [c00000000001f954] timer_interrupt+0xa4/0xe0
[ 61.000212] [c000000ff081fac0] [c000000000002714]
decrementer_common+0x114/0x180
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