** Changed in: ubuntu-power-systems
Status: Triaged => In Progress
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https://bugs.launchpad.net/bugs/1773964
Title:
IPL: ppc64_cpu --frequency hang with INFO: rcu_sched detected stalls
on CPUs/tasks on w34 and wsbmc016 with 920.1714.20170330n
Status in The Ubuntu-power-systems project:
In Progress
Status in linux package in Ubuntu:
In Progress
Status in linux source package in Bionic:
In Progress
Bug description:
== Comment: #0 - Application Cdeadmin <> - 2018-05-22 09:36:12 ==
== Comment: #1 - Application Cdeadmin <> - 2018-05-22 09:36:14 ==
==== State: Open by: swanman on 22 May 2018 09:17:33 ====
Both w34 and wsbmc016 are stopped on this failure, where we get hung
up on the following FFDC gathering step in the OS:
#(CDT) 2018/05/22 05:07:19.398218 - 0.211662 - Issuing: OS Execute Command
ppc64_cpu --frequency ignore_err=1
#(CDT) 2018/05/22 05:07:19.437808 - 0.024108 - Issuing: ppc64_cpu --frequency
, and the last console output shows:
# tail -200 /var/log/obmc-console.log
s this GP) idle=82a/140000000000000/0 softirq=2689/2689 fqs=241989
[13668.719850] (detected by 3, t=3075620 jiffies, g=30289, c=30288, q=796881)
[13732.630691] INFO: rcu_sched detected stalls on CPUs/tasks:
[13732.630727] 75-....: (5904 ticks this GP) idle=82a/140000000000000/0
softirq=2689/2689 fqs=242996
[13732.630757] (detected by 3, t=3091597 jiffies, g=30289, c=30288, q=799822)
[13795.649568] INFO: rcu_sched detected stalls on CPUs/tasks:
[13795.649597] 75-....: (5904 ticks this GP) idle=82a/140000000000000/0
softirq=2689/2689 fqs=243942
[13795.649631] (detected by 7, t=3107351 jiffies, g=30289, c=30288, q=802916)
[13860.140483] INFO: rcu_sched detected stalls on CPUs/tasks:
[13860.140516] 75-....: (5904 ticks this GP) idle=82a/140000000000000/0
softirq=2689/2689 fqs=244940
[13860.140557] (detected by 3, t=3123473 jiffies, g=30289, c=30288, q=806646)
[13924.731404] INFO: rcu_sched detected stalls on CPUs/tasks:
[13924.731438] 75-....: (5904 ticks this GP) idle=82a/140000000000000/0
softirq=2689/2689 fqs=245874
[13924.731484] (detected by 3, t=3139620 jiffies, g=30289, c=30288, q=809909)
[13988.642290] INFO: rcu_sched detected stalls on CPUs/tasks:
[13988.642321] 75-....: (5904 ticks this GP) idle=82a/140000000000000/0
softirq=2689/2689 fqs=246892
[13988.642362] (detected by 3, t=3155596 jiffies, g=30289, c=30288, q=813048)
[14052.661176] INFO: rcu_sched detected stalls on CPUs/tasks:
[14052.661211] 75-....: (5904 ticks this GP) idle=82a/140000000000000/0
softirq=2689/2689 fqs=247857
[14052.661266] (detected by 3, t=3171600 jiffies, g=30289, c=30288, q=816185)
[14115.680024] INFO: rcu_sched detected stalls on CPUs/tasks:
[14115.680051] 75-....: (5904 ticks this GP) idle=82a/140000000000000/0
softirq=2689/2689 fqs=248819
[14115.680085] (detected by 4, t=3187355 jiffies, g=30289, c=30288, q=819190)
[14180.154911] INFO: rcu_sched detected stalls on CPUs/tasks:
[14180.154945] 75-....: (5904 ticks this GP) idle=82a/140000000000000/0
softirq=2689/2689 fqs=249833
[14180.154986] (detected by 132, t=3203473 jiffies, g=30289, c=30288,
q=822138)
[14244.968067]I F: Ne talls onCPUs/tasks
[14244669838] 75-....: (5904 ticks this GP) idle=82a/140000000000000/0
softirq=2689/2689 fqs=2[14244.669944] (detected by 3, t=3219600 jiffies,
g=30289, c=30288, q=825384)
[14308.748680] Id detected stalls on CPUs/tasks:
[14308.748719] 75-....: (5904 ticks this GP) idle=82a/140000000000000/0
softirq=2689/2689 fqs=251755
[14308.748755] (detected by 3, t=3235620 jiffies, g=30289, c=30288, q=828445)
[14333.081775] Watchdog CPU:132 Hard LOCKUP
[14344.750295] Watchdog CPU:132 became unstuck
[14372.735558] INFO: rcu_sched detected stalls on CPUs/tasks:
[14372.735587] 75-....: (5904 ticks this GP) idle=82a/140000000000000/0
softirq=2689/2689 fqs=252722
[14372.735611] (detected by 6, t=3251616 jiffies, g=30289, c=30288, q=831375)
[14435.910193] INFO: rcu_sched detected stalls on CPUs/tasks:
[14435.910219] 75-....: (5904 ticks this GP) idle=82a/140000000000000/0
softirq=2689/2689 fqs=253675
[14435.910253] (detected by 3, t=3267409 jiffies, g=30289, c=30288, q=834375)
[14500.167195] INFO: rcu_sched detected stalls on CPUs/tasks:
[14500.167230] 75-....: (5904 ticks this GP) idle=82a/140000000000000/0
softirq=2689/2689 fqs=254601
[14500.167273] (detected by 134, t=3283473 jiffies, g=30289, c=30288,
q=837600)
[14564.664395] INFO: rcu_sched detected stalls on CPUs/tasks:
[14564.664427] 75-....: (5904 ticks this GP) idle=82a/140000000000000/0
softirq=2689/2689 fqs=255493
[14564.664470] (detected by 3, t=3299596 jiffies, g=30289, c=30288, q=840539)
[14628.665755] INFO: rcu_sched detected stalls on CPUs/tasks:
[14628.665790] 75-....: (5904 ticks this GP) idle=82a/140000000000000/0
softirq=2689/2689 fqs=256471
[14628.665824] (detected by 3, t=3315596 jiffies, g=30289, c=30288, q=843505)
[14692.759268] INFO: rcu_sched detected stalls on CPUs/tasks:
[14692.759299] 75-....: (5904 ticks this GP) idle=82a/140000000000000/0
softirq=2689/2689 fqs=257372
[14692.759330] (detected by 3, t=3331620 jiffies, g=30289, c=30288, q=846522)
[14755.916887] INFO: rcu_sched detected stalls on CPUs/tasks:
[14755.916918] 75-....: (5904 ticks this GP) idle=82a/140000000000000/0
softirq=2689/2689 fqs=258248
[14755.916943] (detected by 3, t=3347409 jiffies, g=30289, c=30288, q=849740)
[14820.174651] INFO: rcu_sched detected stalls on CPUs/tasks:
[14820.174680] 75-....: (5904 ticks this GP) idle=82a/140000000000000/0
softirq=2689/2689 fqs=259206
[14820.174710] (detected by 3, t=3363473 jiffies, g=30289, c=30288, q=852406)
[14884.688523] IO:N Fcr_suhecd 8 75-....: (5904 ticks this GP)
idle=82a/140000000000000/0 softirq=2689/2689 fqs=260089
[14884.688651] y 3, t=3379600 jiffies, g=30289, c=30288, q=855646)
[14948.674473] I stalls on CPUs/tasks:
[14948.674517] 75-....: (5904 ticks this GP) idle=82a/140000000000000/0
softirq=2689/2689 fqs=261047
[14948.674568] (detected by 3, t=3395597 jiffies, g=30289, c=30288, q=858963)
[15012.676503] INFO: rcu_sched detected stalls on CPUs/tasks:
[15012.676531] 75-....: (5904 ticks this GP) idle=82a/140000000000000/0
softirq=2689/2689 fqs=262011
[15012.676579] (detected by 3, t=3411596 jiffies, g=30289, c=30288, q=861906)
[15075.694581] INFO: rcu_sched detected stalls on CPUs/tasks:
[15075.694612] 75-....: (5904 ticks this GP) idle=82a/140000000000000/0
softirq=2689/2689 fqs=262943
[15075.694645] (detected by 7, t=3427351 jiffies, g=30289, c=30288, q=864958)
[15140.184 77P] 88FdelCU75-....: (5904 ticks this GP)
idle=82a/140000000000000/0 softirqfqs=263861
[15140.184895] (detected by 132, t=3443473 jiffies, g=30289, c=30288,
q=868102)
[15204.774985] Isched detected stalls on CPUs/tasks:
[15204.775026] 75-....: (5904 ticks this GP) idle=82a/140000000000000/0
softirq=2689/2689 fqs=264786
[15204.775075] (detected by 3, t=3459620 jiffies, g=30289, c=30288, q=871323)
[158.2706298 4]FOIl asksP
1526[870277]. 75-...: (5904ticks this GP) idle=82a/140000000000000/0
softirq=2689/2689 fqs=265714
[15268.709381] ce by 3, t=3475603 jiffies, g=30289, c=30288, q=874564)
[15332.707555] Iched detected stalls on CPUs/tasks:
[15332.707594] 75-....: (5904 ticks this GP) idle=82a/140000000000000/0
softirq=2689/2689 fqs=266614
[15332.707641] (detected by 3, t=3491602 jiffies, g=30289, c=30288, q=877578)
[15395.729876] INFO: rcu_sched detected stalls on CPUs/tasks:
[15395.729904] 75-....: (5904 ticks this GP) idle=82a/140000000000000/0
softirq=2689/2689 fqs=267583
[15395.729947] (detected by 7, t=3507357 jiffies, g=30289, c=30288, q=880546)
[15460.196261] INFO: rcu_sched detected stalls on CPUs/tasks:
[15460.196293] 75-....: (5904 ticks this GP) idle=82a/140000000000000/0
softirq=2689/2689 fqs=268585
[15460.196324] (detected by 3, t=3523473 jiffies, g=30289, c=30288, q=883448)
[15524.714688] INFO: rcu_sched detected stalls on CPUs/tasks:
[15524.714728] 75-....: (5904 ticks this GP) idle=82a/140000000000000/0
softirq=2689/2689 fqs=269506
[15524.714766] (detected by 3, t=3539601 jiffies, g=30289, c=30288, q=886049)
[15588.717133] INFO: rcu_sched detected stalls on CPUs/tasks:
[15588.717167] 75-....: (5904 ticks this GP) idle=82a/140000000000000/0
softirq=2689/2689 fqs=270465
[15588.717201] (detected by 6, t=3555602 jiffies, g=30289, c=30288, q=889197)
[15652.791581] INFO: rcu_sched detected stalls on CPUs/tasks:
[15652.791613] 75-....: (5904 ticks this GP) idle=82a/140000000000000/0
softirq=2689/2689 fqs=271387
[15652.791653] (detected by 3, t=3571620 jiffies, g=30289, c=30288, q=891919)
[15715.950025] INFO: rcu_sched detected stalls on CPUs/tasks:
[15715.950057] 75-....: (5904 ticks this GP) idle=82a/140000000000000/0
softirq=2689/2689 fqs=272317
[15715.950081] (detected by 3, t=3587409 jiffies, g=30289, c=30288, q=894689)
[15780.208530] INFO: rcu_sched detected stalls on CPUs/tasks:
[15780.208562] 75-....: (5904 ticks this GP) idle=82a/140000000000000/0
softirq=2689/2689 fqs=273264
[15780.208592] (detected by 3, t=3603473 jiffies, g=30289, c=30288, q=897742)
[15844.799063] INFO: rcu_sched detected stalls on CPUs/tasks:
[15844.799092] 75-....: (5904 ticks this GP) idle=82a/140000000000000/0
softirq=2689/2689 fqs=274155
[15844.799125] (detected by 3, t=3619620 jiffies, g=30289, c=30288, q=900825)
[15908.713583]I O: rcu_NFhsoas:
[15908.13616] 75-....: (5904 ticks this GP) idle=82a/140000000000000/0
softirq=2689/2689 fqs=275069
[15908.713715] 3 t=3635597 jiffies, g=30289, c=30288, q=903951)
[15972.712119] Ited stalls on CPUs/tasks:
[15972.712163] 75-....: (5904 ticks this GP) idle=82a/140000000000000/0
softirq=2689/2689 fqs=276037
[15972.712200] (detected by 3, t=3651597 jiffies, g=30289, c=30288, q=906870)
[16035.730638] INFO: rcu_sched detected stalls on CPUs/tasks:
[16035.730674] 75-....: (5904 ticks this GP) idle=82a/140000000000000/0
softirq=2689/2689 fqs=277022
[16035.730712] (detected by 130, t=3667351 jiffies, g=30289, c=30288,
q=909454)
[16100.221204] INFO: rcu_sched detected stalls on CPUs/tasks:
[16100.221234] 75-....: (5904 ticks this GP) idle=82a/140000000000000/0
softirq=2689/2689 fqs=277993
[16100.221274] (detected by 3, t=3683473 jiffies, g=30289, c=30288, q=912612)
[16164.751789] INFO:rO _cuscd a:
s[1616.16164.751[]2 2 75-....: (504 ticks this GP)
idle=82a/140000000000000/0 softirq=2689/2689 fqs=278956
[16164.751920] td y 3, t=3699604 jiffies, g=30289, c=30288, q=915666)
[16228.722360] I stalls on CPUs/tasks:
[16228.722404] 75-....: (5904 ticks this GP) idle=82a/140000000000000/0
softirq=2689/2689 fqs=279926
[16228.722443] (detected by 3, t=3715596 jiffies, g=30289, c=30288, q=918675)
[16292.720966] INFO: rcu_sched detected stalls on CPUs/tasks:
[16292.721030] 75-....: (5904 ticks this GP) idle=82a/140000000000000/0
softirq=2689/2689 fqs=280867
[16292.721072] (detected by 25, t=3731596 jiffies, g=30289, c=30288,
q=921494)
[16355.743495] INFO: rcu_sched detected stalls on CPUs/tasks:
[16355.743522] 75-....: (5904 ticks this GP) idle=82a/140000000000000/0
softirq=2689/2689 fqs=281853
[16355.743547] (detected by 6, t=3747351 jiffies, g=30289, c=30288, q=924261)
[16420.234094] INFO: rcu_sched detected stalls on CPUs/tasks:
[16420.234121] 75-....: (5904 ticks this GP) idle=82a/140000000000000/0
softirq=2689/2689 fqs=282785
[16420.234162] (detected by 3, t=3763473 jiffies, g=30289, c=30288, q=927318)
[16484.755k5] IN75-....:7 (9504t icks this GP) idle=82a/140000000000000/0
softirq=2689/2689 fqs=283749
[16484.752853] eted by3, t=3779601 jiffies, g=30289, c=30288, q=930422)
[16548.827505] Icted stalls on CPUs/tasks:
[16548.827547] 75-....: (5904 ticks this GP) idle=82a/140000000000000/0
softirq=2689/2689 fqs=284725
[16548.827592] (detected by 3, t=3795620 jiffies, g=30289, c=30288, q=933304)
[16612.758266] INFO: rcu_sched detected stalls on CPUs/tasks:
[16612.758301] 75-....: (5904 ticks this GP) idle=82a/140000000000000/0
softirq=2689/2689 fqs=285631
[16612.758345] (detected by 3, t=3811601 jiffies, g=30289, c=30288, q=936097)
[16675.780986] INFO: rcu_sched detected stalls on CPUs/tasks:
[16675.781016] 75-....: (5904 ticks this GP) idle=82a/140000000000000/0
softirq=2689/2689 fqs=286540
[16675.781053] (detected by 130, t=3827357 jiffies, g=30289, c=30288,
q=938924)
[16740.247733] INFO: rcu_sched detected stalls on CPUs/tasks:
[16740.247767] 75-....: (5904 ticks this GP) idle=82a/140000000000000/0
softirq=2689/2689 fqs=287491
[16740.247807] (detected by 3, t=3843473 jiffies, g=30289, c=30288, q=942104)
[16804.762481] NIO:rFttslsa no PCUs/aks
[s160:4.2511] 7675-....: (5904 ticks this GP) idle=82a/140000000000000/0
softirq=2689/2689 fqs=288410
[16804.762616] dteced by 3, t=3859601 jiffies, g=30289, c=30288, q=945426)
[16868.841201] I detected stalls on CPUs/tasks:
[16868.841242] 75-....: (5904 ticks this GP) idle=82a/140000000000000/0
softirq=2689/2689 fqs=289383
[16868.841281] (detected by 3, t=3875620 jiffies, g=30289, c=30288, q=948853)
[16932.751907] INFO: rcu_sched detected stalls on CPUs/tasks:
[16932.751938] 75-....: (5904 ticks this GP) idle=82a/140000000000000/0
softirq=2689/2689 fqs=290305
[16932.751978] (detected by 3, t=3891597 jiffies, g=30289, c=30288, q=952379)
[16995.770578] INFO: rcu_sched detected stalls on CPUs/tasks:
[16995.770613] 75-....: (5904 ticks this GP) idle=82a/140000000000000/0
softirq=2689/2689 fqs=291234
[16995.770651] (detected by 130, t=3907351 jiffies, g=30289, c=30288,
q=955472)
[17060.261283] INFO: rcu_sched detected stalls on CPUs/tasks:
[17060.261314] 75-....: (5904 ticks this GP) idle=82a/140000000000000/0
softirq=2689/2689 fqs=292159
[17060.261354] (detected by 3, t=3923473 jiffies, g=30289, c=30288, q=959072)
[17124.791994] INFO: rcu_sched detected stalls on CPUs/tasks:
[17124.792029] 75-....: (5904 ticks this GP) idle=82a/140000000000000/0
softirq=2689/2689 fqs=293083
[17124.792069] (detected by 3, t=3939604 jiffies, g=30289, c=30288, q=962221)
71888.57141688]075- ..:.59 (0 4ticks this GP) idle=82a/140000000000000/0
softirq=2689/2689 fqs=294027
[17188.854815] t=3955620 jiffies, g=30289, c=30288, q=965699)
-----------------------------------
Keyword 'Check State' failed after retrying for 15 minutes. The last error
was:
#(CDT) 2018/05/22 05:05:49.896460 - 10.672026 - **ERROR** The current state
of the machine does NOT match the match state:
state:
state[rest]: 1
state[host]: Off
state[operating_system]: Inactive
state[boot_progress]: Unspecified
state[chassis]: On
state[os_login]: 0
state[os_run_cmd]: 0
state[os_ping]: 0
boot_end_time: (CDT) 2018/05/22 05:05:49.900677
#(CDT) 2018/05/22 05:05:49.900677 - 0.004217 - BOOT_FAILED: "REST OBMC Reboot
(run)" failed.
build_name: 920.1808.20180518b
platform: witherspoon
== Comment: #2 - Application Cdeadmin <> - 2018-05-22 09:56:15 ==
==== State: Open by: swanman on 22 May 2018 09:53:43 ====
#=#=# 2018-05-22 09:53:40 (CDT) #=#=#
#=#=#=#=#=#=#=#=#=#=#=#=#=#=#=#=#=#=#
== Comment: #3 - Application Cdeadmin <> - 2018-05-22 12:42:02 ==
==== State: Open by: swanman on 22 May 2018 12:31:06 ====
Unfortunately we lost the hang state on wsbmc016, but here is what I
was able to save off prior ...
Looks like someone stopped the test on wsbmc016, so we lost the failed state
#(CDT) 2018/05/21 17:12:19.564819 - 0.014776 - Issuing: ppc64_cpu --frequency
#(CDT) 2018/05/22 11:32:36.223134 - 66386.779704 - Executing:
obmc_boot::exit_function "EXIT" "0"
#(CDT) 2018/05/22 11:32:36.286650 - 0.063516 - Issuing: kill_autoend
autoend_pid
root@witherspoon:~# tail -200 /var/log/obmc-console.log
c000000fdd92f720] [c0000000002061ac] tick_sched_timer+0x8c/0x1b0
[54800.623485] [c000000fdd92f760] [c0000000001ea198]
__hrtimer_run_queues+0x118/0x3e0
[54800.623593] [c000000fdd92f800] [c0000000001eb3ac]
hrtimer_interrupt+0xfc/0x310
[54800.623692] [c000000fdd92f8d0] [c000000000025ed0]
__timer_interrupt+0x90/0x270
[54800.623791] [c000000fdd92f920] [c0000000000262e0] timer_interrupt+0xa0/0xe0
[54800.623856] [c000000fdd92f950] [c000000000008f84]
decrementer_common+0x114/0x120
[54800.623973] --- interrupt: 901 at smp_call_function_single+0x180/0x2b0
[54800.623973] LR = smp_call_function_single+0x15c/0x2b0
[54800.624130] [c000000fdd92fc40] [c000000fdd92fc90] 0xc000000fdd92fc90
(unreliable)
[54800.624236] [c000000fdd92fca0] [c0000000002d7b64]
perf_install_in_context+0x1d4/0x250
[54800.624323] [c000000fdd92fd30] [c0000000002e9784]
SyS_perf_event_open+0xb14/0xda0
[54800.624430] [c000000fdd92fe30] [c00000000000b004] system_call+0x38/0xe0
[54980.670091] INFO: rcu_sched self-detected stall on CPU
[54980.670137] 49-...: (5479214 ticks this GP) idle=72b/140000000000001/0
softirq=706/706 fqs=2714915
[54980.670211] (t=5479215 jiffies g=5834 c=5833 q=3610838)
[54980.670267] Task dump for CPU 49:
[54980.670291] ppc64_cpu R running task 0 6588 6516
0x00042084
[54980.670401] Call Trace:
[54980.670429] [c000000fdd92f500] [c000000000bfdddc]
sched_show_task.part.61+0x80/0x98 (unreliable)
[54980.670565] [c000000fdd92f570] [c000000000bfe50c]
rcu_dump_cpu_stacks+0xd8/0x13c
[54980.670655] [c000000fdd92f5c0] [c0000000001dfc84]
rcu_check_callbacks+0xbf4/0xcd0
[54980.670774] [c000000fdd92f6e0] [c0000000001e9264]
update_process_times+0x84/0xf0
[54980.670890] [c000000fdd92f720] [c0000000002061ac]
tick_sched_timer+0x8c/0x1b0
[54980.671009] [c000000fdd92f760] [c0000000001ea198]
__hrtimer_run_queues+0x118/0x3e0
[54980.671154] [c000000fdd92f800] [c0000000001eb3ac]
hrtimer_interrupt+0xfc/0x310
[54980.671270] [c000000fdd92f8d0] [c000000000025ed0]
__timer_interrupt+0x90/0x270
[54980.671367] [c000000fdd92f920] [c0000000000262e0] timer_interrupt+0xa0/0xe0
[54980.671465] [c000000fdd92f950] [c000000000008f84]
decrementer_common+0x114/0x120
[54980.671574] --- interrupt: 901 at smp_call_function_single+0x188/0x2b0
[54980.671574] LR = smp_call_function_single+0x15c/0x2b0
[54980.671689] [c000000fdd92fc40] [c000000fdd92fc90] 0xc000000fdd92fc90
(unreliable)
[54980.671806] [c000000fdd92fca0] [c0000000002d7b64]
perf_install_in_context+0x1d4/0x250
[54980.671913] [c000000fdd92fd30] [c0000000002e9784]
SyS_perf_event_open+0xb14/0xda0
[54980.672029] [c000000fdd92fe30] [c00000000000b004] system_call+0x38/0xe0
[55160.717672] INFO: rcu_sched self-detected stall on CPU
[55160.717720] 49-...: (5497218 ticks this GP) idle=72b/140000000000001/0
softirq=706/706 fqs=2723789
[55160.717803] (t=5497219 jiffies g=5834 c=5833 q=3621302)
[55160.717869] Task dump for CPU 49:
[55160.717903] ppc64_cpu R running task 0 6588 6516
0x00042084
[55160.718019] Call Trace:
[55160.718059] [c000000fdd92f500] [c000000000bfdddc]
sched_show_task.part.61+0x80/0x98 (unreliable)
[55160.718193] [c000000fdd92f570] [c000000000bfe50c]
rcu_dump_cpu_stacks+0xd8/0x13c
[55160.718290] [c000000fdd92f5c0] [c0000000001dfc84]
rcu_check_callbacks+0xbf4/0xcd0
[55160.718421] [c000000fdd92f6e0] [c0000000001e9264]
update_process_times+0x84/0xf0
[55160.718540] [c000000fdd92f720] [c0000000002061ac]
tick_sched_timer+0x8c/0x1b0
[55160.718641] [c000000fdd92f760] [c0000000001ea198]
__hrtimer_run_queues+0x118/0x3e0
[55160.718739] [c000000fdd92f800] [c0000000001eb3ac]
hrtimer_interrupt+0xfc/0x310
[55160.718838] [c000000fdd92f8d0] [c000000000025ed0]
__timer_interrupt+0x90/0x270
[55160.718934] [c000000fdd92f920] [c0000000000262e0] timer_interrupt+0xa0/0xe0
[55160.719013] [c000000fdd92f950] [c000000000008f84]
decrementer_common+0x114/0x120
[55160.719113] --- interrupt: 901 at smp_call_function_single+0x184/0x2b0
[55160.719113] LR = smp_call_function_single+0x15c/0x2b0
[55160.719277] [c000000fdd92fc40] [c000000fdd92fc90] 0xc000000fdd92fc90
(unreliable)
[55160.719373] [c000000fdd92fca0] [c0000000002d7b64]
perf_install_in_context+0x1d4/0x250
[55160.719463] [c000000fdd92fd30] [c0000000002e9784]
SyS_perf_event_open+0xb14/0xda0
[55160.719559] [c000000fdd92fe30] [c00000000000b004] system_call+0x38/0xe0
[55340.765251] INFO: rcu_sched self-detected stall on CPU
[55340.765305] 49-...: (5515222 ticks this GP) idle=72b/140000000000001/0
softirq=706/706 fqs=2732670
[55340.765392] (t=5515223 jiffies g=5834 c=5833 q=3631900)
[55340.765458] Task dump for CPU 49:
[55340.765492] ppc64_cpu R running task 0 6588 6516
0x00042084
[55340.765575] Call Trace:
[55340.765603] [c000000fdd92f500] [c000000000bfdddc]
sched_show_task.part.61+0x80/0x98 (unreliable)
[55340.765727] [c000000fdd92f570] [c000000000bfe50c]
rcu_dump_cpu_stacks+0xd8/0x13c
[55340.765818] [c000000fdd92f5c0] [c0000000001dfc84]
rcu_check_callbacks+0xbf4/0xcd0
[55340.765927] [c000000fdd92f6e0] [c0000000001e9264]
update_process_times+0x84/0xf0
[55340.766023] [c000000fdd92f720] [c0000000002061ac]
tick_sched_timer+0x8c/0x1b0
[55340.766123] [c000000fdd92f760] [c0000000001ea198]
__hrtimer_run_queues+0x118/0x3e0
[55340.766239] [c000000fdd92f800] [c0000000001eb3ac]
hrtimer_interrupt+0xfc/0x310
[55340.766368] [c000000fdd92f8d0] [c000000000025ed0]
__timer_interrupt+0x90/0x270
[55340.766509] [c000000fdd92f920] [c0000000000262e0] timer_interrupt+0xa0/0xe0
[55340.766609] [c000000fdd92f950] [c000000000008f84]
decrementer_common+0x114/0x120
[55340.766726] --- interrupt: 901 at smp_call_function_single+0x180/0x2b0
[55340.766726] LR = smp_call_function_single+0x15c/0x2b0
[55340.766886] [c000000fdd92fc40] [c000000fdd92fc90] 0xc000000fdd92fc90
(unreliable)
[55340.766993] [c000000fdd92fca0] [c0000000002d7b64]
perf_install_in_context+0x1d4/0x250
[55340.767093] [c000000fdd92fd30] [c0000000002e9784]
SyS_perf_event_open+0xb14/0xda0
[55340.767171] [c000000fdd92fe30] [c00000000000b004] system_call+0x38/0xe0
[55520.812831] INFO: rcu_sched self-detected stall on CPU
[55520.812888] 49-...: (5533226 ticks this GP) idle=72b/140000000000001/0
softirq=706/706 fqs=2741558
[55520.812971] (t=5533227 jiffies g=5834 c=5833 q=3642556)
[55520.813046] Task dump for CPU 49:
[55520.813090] ppc64_cpu R running task 0 6588 6516
0x00042084
[55520.813189] Call Trace:
[55520.813208] [c000000fdd92f500] [c000000000bfdddc]
sched_show_task.part.61+0x80/0x98 (unreliable)
[55520.813344] [c000000fdd92f570] [c000000000bfe50c]
rcu_dump_cpu_stacks+0xd8/0x13c
[55520.813461] [c000000fdd92f5c0] [c0000000001dfc84]
rcu_check_callbacks+0xbf4/0xcd0
[55520.813551] [c000000fdd92f6e0] [c0000000001e9264]
update_process_times+0x84/0xf0
[55520.813672] [c000000fdd92f720] [c0000000002061ac]
tick_sched_timer+0x8c/0x1b0
[55520.813768] [c000000fdd92f760] [c0000000001ea198]
__hrtimer_run_queues+0x118/0x3e0
[55520.813903] [c000000fdd92f800] [c0000000001eb3ac]
hrtimer_interrupt+0xfc/0x310
[55520.814011] [c000000fdd92f8d0] [c000000000025ed0]
__timer_interrupt+0x90/0x270
[55520.814110] [c000000fdd92f920] [c0000000000262e0] timer_interrupt+0xa0/0xe0
[55520.814198] [c000000fdd92f950] [c000000000008f84]
decrementer_common+0x114/0x120
[55520.814296] --- interrupt: 901 at smp_call_function_single+0x180/0x2b0
[55520.814296] LR = smp_call_function_single+0x15c/0x2b0
[55520.814449] [c000000fdd92fc40] [c000000fdd92fc90] 0xc000000fdd92fc90
(unreliable)
[55520.814553] [c000000fdd92fca0] [c0000000002d7b64]
perf_install_in_context+0x1d4/0x250
[55520.814658] [c000000fdd92fd30] [c0000000002e9784]
SyS_perf_event_open+0xb14/0xda0
[55520.814756] [c000000fdd92fe30] [c00000000000b004] system_call+0x38/0xe0
[55700.860411] INFO: rcu_sched self-detected stall on CPU
[55700.860464] 49-...: (5551230 ticks this GP) idle=72b/140000000000001/0
softirq=706/706 fqs=2750435
[55700.860577] (t=5551231 jiffies g=5834 c=5833 q=3653059)
[55700.860635] Task dump for CPU 49:
[55700.860688] ppc64_cpu R running task 0 6588 6516
0x00042084
[55700.860777] Call Trace:
[55700.860815] [c000000fdd92f500] [c000000000bfdddc]
sched_show_task.part.61+0x80/0x98 (unreliable)
[55700.860949] [c000000fdd92f570] [c000000000bfe50c]
rcu_dump_cpu_stacks+0xd8/0x13c
[55700.861049] [c000000fdd92f5c0] [c0000000001dfc84]
rcu_check_callbacks+0xbf4/0xcd0
[55700.861166] [c000000fdd92f6e0] [c0000000001e9264]
update_process_times+0x84/0xf0
[55700.861286] [c000000fdd92f720] [c0000000002061ac]
tick_sched_timer+0x8c/0x1b0
[55700.861386] [c000000fdd92f760] [c0000000001ea198]
__hrtimer_run_queues+0x118/0x3e0
[55700.861484] [c000000fdd92f800] [c0000000001eb3ac]
hrtimer_interrupt+0xfc/0x310
[55700.861588] [c000000fdd92f8d0] [c000000000025ed0]
__timer_interrupt+0x90/0x270
[55700.861684] [c000000fdd92f920] [c0000000000262e0] timer_interrupt+0xa0/0xe0
[55700.861773] [c000000fdd92f950] [c000000000008f84]
decrementer_common+0x114/0x120
[55700.861879] --- interrupt: 901 at smp_call_function_single+0x188/0x2b0
[55700.861879] LR = smp_call_function_single+0x15c/0x2b0
[55700.862026] [c000000fdd92fc40] [c000000fdd92fc90] 0xc000000fdd92fc90
(unreliable)
[55700.862127] [c000000fdd92fca0] [c0000000002d7b64]
perf_install_in_context+0x1d4/0x250
[55700.862227] [c000000fdd92fd30] [c0000000002e9784]
SyS_perf_event_open+0xb14/0xda0
[55700.862331] [c000000fdd92fe30] [c00000000000b004] system_call+0x38/0xe0
[55880.907991] INFO: rcu_sched self-detected stall on CPU
[55880.908047] 49-...: (5569234 ticks this GP) idle=72b/140000000000001/0
softirq=706/706 fqs=2759321
[55880.908131] (t=5569235 jiffies g=5834 c=5833 q=3663812)
[55880.908187] Task dump for CPU 49:
[55880.908230] ppc64_cpu R running task 0 6588 6516
0x00042084
[55880.908328] Call Trace:
[55880.908357] [c000000fdd92f500] [c000000000bfdddc]
sched_show_task.part.61+0x80/0x98 (unreliable)
[55880.908471] [c000000fdd92f570] [c000000000bfe50c]
rcu_dump_cpu_stacks+0xd8/0x13c
[55880.908593] [c000000fdd92f5c0] [c0000000001dfc84]
rcu_check_callbacks+0xbf4/0xcd0
[55880.908707] [c000000fdd92f6e0] [c0000000001e9264]
update_process_times+0x84/0xf0
[55880.908822] [c000000fdd92f720] [c0000000002061ac]
tick_sched_timer+0x8c/0x1b0
[55880.908939] [c000000fdd92f760] [c0000000001ea198]
__hrtimer_run_queues+0x118/0x3e0
[55880.909070] [c000000fdd92f800] [c0000000001eb3ac]
hrtimer_interrupt+0xfc/0x310
[55880.909170] [c000000fdd92f8d0] [c000000000025ed0]
__timer_interrupt+0x90/0x270
[55880.909263] [c000000fdd92f920] [c0000000000262e0] timer_interrupt+0xa0/0xe0
[55880.909350] [c000000fdd92f950] [c000000000008f84]
decrementer_common+0x114/0x120
[55880.909443] --- interrupt: 901 at smp_call_function_single+0x188/0x2b0
[55880.909600] [c000000fdd92fc40] [c000000fdd92fc90] 0xc000000fdd92fc90
(unreliable)
[55880.909678] [c000000fdd92fca0] [c0000000002d7b64]
perf_install_in_context+0x1d4/0x250
[55880.909809] [c000000fdd92fd30] [c0000000002e9784]
SyS_perf_event_open+0xb14/0xda0
[55880.909906] [c000000fdd92fe30] [c00000000000b004] system_call+0x38/0xe0
[56060.955572] INFO: rcu_sched self-detected stall on CPU
[56060.955620] 49-...: (5587238 ticks this GP) idle=72b/140000000000001/0
softirq=706/706 fqs=2768201
[56060.955694] (t=5587239 jiffies g=5834 c=5833 q=3673981)
[56060.955760] Task dump for CPU 49:
[56060.955826] ppc64_cpu R running task 0 6588 6516
0x00042084
[56060.955944] Call Trace:
[56060.955993] [c000000fdd92f500] [c000000000bfdddc]
sched_show_task.part.61+0x80/0x98 (unreliable)
[56060.956127] [c000000fdd92f570] [c000000000bfe50c]
rcu_dump_cpu_stacks+0xd8/0x13c
[56060.956244] [c000000fdd92f5c0] [c0000000001dfc84]
rcu_check_callbacks+0xbf4/0xcd0
[56060.956352] [c000000fdd92f6e0] [c0000000001e9264]
update_process_times+0x84/0xf0
[56060.956455] [c000000fdd92f720] [c0000000002061ac]
tick_sched_timer+0x8c/0x1b0
[56060.956550] [c000000fdd92f760] [c0000000001ea198]
__hrtimer_run_queues+0x118/0x3e0
[56060.956647] [c000000fdd92f800] [c0000000001eb3ac]
hrtimer_interrupt+0xfc/0x310
[56060.956749] [c000000fdd92f8d0] [c000000000025ed0]
__timer_interrupt+0x90/0x270
[56060.956848] [c000000fdd92f920] [c0000000000262e0] timer_interrupt+0xa0/0xe0
[56060.956935] [c000000fdd92f950] [c000000000008f84]
decrementer_common+0x114/0x120
[56060.957039] --- interrupt: 901 at smp_call_function_single+0x184/0x2b0
[56060.957039] LR = smp_call_function_single+0x15c/0x2b0
[56060.957194] [c000000fdd92fc40] [c000000fdd92fc90] 0xc000000fdd92fc90
(unreliable)
[56060.957293] [c000000fdd92fca0] [c0000000002d7b64]
perf_install_in_context+0x1d4/0x250
[56060.957394] [c000000fdd92fd30] [c0000000002e9784]
SyS_perf_event_open+0xb14/0xda0
[56060.957492] [c000000fdd92fe30] [c00000000000b004] system_call+0x38/0xe0
root@witherspoon:~#
== Comment: #9 - Shilpasri G. Bhat <shigb...@in.ibm.com> - 2018-05-28
00:40:16 ==
Stewart has pointed to these missing kernel commits required for this bug:
1) 682e6b4da5cbe8e9a53f979a58c2a9d7dc997175 rtc: opal: Fix OPAL RTC driver
OPAL_BUSY loops
2) 34dd25de9fe3f60bfdb31b473bf04b28262d0896 powerpc/powernv: define a
standard delay for OPAL_BUSY type retry loops
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