Comment 19 for bug 1752002

------- Comment From <email address hidden> 2019-07-15 09:59 EDT-------
I added:
https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=0c9108b083706330cd5484d121fbb0ad67e8f647

in addition to:
https://git.kernel.org/pub/scm/linux/kernel/git/powerpc/linux.git/commit/?h=next&id=7ccc4fe5ff9e3a134e863beed0dba18a5e511659

It ran a lot longer - hour instead of minutes, but then ended up with this:
[18734.191331] perf: interrupt took too long (1054 > 1051), lowering kernel.perf_event_max_sample_rate to 7500
[18736.617855] perf: Dynamic interrupt throttling disabled, can hang your system!
[18751.191062] perf: interrupt took too long (2317 > 1333), lowering kernel.perf_event_max_sample_rate to 3250
[18753.006339] perf: interrupt took too long (2218 > 1), lowering kernel.perf_event_max_sample_rate to 3500
[18754.156398] perf: Dynamic interrupt throttling disabled, can hang your system!
[18775.067223] perf: interrupt took too long (2227 > 1), lowering kernel.perf_event_max_sample_rate to 3500
[18779.532549] perf: Dynamic interrupt throttling disabled, can hang your system!
[18834.315583] perf: Dynamic interrupt throttling disabled, can hang your system!
[18851.090933] Watchdog CPU:102 Hard LOCKUP
[18851.090936] Modules linked in: kvm_hv kvm vmx_crypto crct10dif_vpmsum ast drm_kms_helper ttm ofpart cmdlinepart drm fb_sys_fops ipmi_powernv at24 syscopyarea ipmi_devintf powernv_flash sysfillrect ipmi_msghandler opal_prd mtd ibmpowernv sysimgblt i2c_algo_bit uio_pdrv_genirq uio sch_fq_codel ip_tables x_tables autofs4 mlx5_core ahci mlxfw crc32c_vpmsum tg3 libahci devlink
[18851.090995] CPU: 102 PID: 0 Comm: swapper/102 Tainted: G L 4.15.0-54-generic #58
[18851.090997] NIP: c000000000100740 LR: c00000000010058c CTR: c0000000000fe770
[18851.091000] REGS: c000000007ad3d80 TRAP: 0900 Tainted: G L (4.15.0-54-generic)
[18851.091001] MSR: 9000000000009033 <SF,HV,EE,ME,IR,DR,RI,LE> CR: 28002882 XER: 00000000
[18851.091014] CFAR: c00000000000deb8 SOFTE: 0
GPR00: c000000000100584 c00020397b423850 c00000000170b800 c000003f80925000
GPR04: 000000007fffffff c00020397b4238b0 c000203994486958 c0002039944868b8
GPR08: 0000000000000004 0000000000000000 0000000000000001 0000000000000000
GPR12: c0002039944868f8 c000000007a56200 c00020397b423f90 0000000000000000
GPR16: 0000000000000000 c00000000004ad60 c00000000004ad30 c0000000011d5380
GPR20: 0000000000000800 c000000001742494 0000000000000066 0000000000000001
GPR24: 0000000000000198 0000000080000000 0000000000000000 0000000000000006
GPR28: 0000000000000000 c0000000018d1808 0000000006004010 c0002039944868a0
[18851.091058] NIP [c000000000100740] power_pmu_enable+0x4f0/0x600
[18851.091060] LR [c00000000010058c] power_pmu_enable+0x33c/0x600
[18851.091061] Call Trace:
[18851.091065] [c00020397b423850] [c000000000100584] power_pmu_enable+0x334/0x600 (unreliable)
[18851.091071] [c00020397b423930] [c0000000002c9dbc] ctx_resched+0xec/0x150
[18851.091075] [c00020397b423970] [c0000000002ca014] __perf_install_in_context+0x1f4/0x280
[18851.091079] [c00020397b4239c0] [c0000000002bf7d0] remote_function+0x40/0x90
[18851.091083] [c00020397b4239f0] [c0000000001db9dc] flush_smp_call_function_queue+0xac/0x1d0
[18851.091087] [c00020397b423a70] [c00000000004bf7c] smp_ipi_demux_relaxed+0x9c/0x110
[18851.091092] [c00020397b423ab0] [c000000000047948] doorbell_exception+0xa8/0xe0
[18851.091096] [c00020397b423ae0] [c000000000009ad4] h_doorbell_common+0x114/0x120
[18851.091102] --- interrupt: e81 at replay_interrupt_return+0x0/0x4
LR = arch_local_irq_restore+0x74/0x90
[18851.091106] [c00020397b423dd0] [0000004000000000] 0x4000000000 (unreliable)
[18851.091111] [c00020397b423df0] [c000000000acea80] cpuidle_enter_state+0xf0/0x450
[18851.091116] [c00020397b423e50] [c00000000017852c] call_cpuidle+0x4c/0x90
[18851.091119] [c00020397b423e70] [c000000000178940] do_idle+0x2b0/0x330
[18851.091122] [c00020397b423ec0] [c000000000178bf8] cpu_startup_entry+0x38/0x40
[18851.091125] [c00020397b423ef0] [c00000000004d280] start_secondary+0x4f0/0x510
[18851.091129] [c00020397b423f90] [c00000000000ab6c] start_secondary_prolog+0x10/0x14
[18851.091131] Instruction dump:
[18851.091135] 7fa9f000 419d001c 7d29c850 7d244b78 f93801b8 4bfffe44 60000000 60000000
[18851.091147] 39200000 38800000 f93801b8 4bfffe2c <eae10098> 4bfffb98 60000000 60000000
[18854.550395] Watchdog CPU:102 became unstuck
[18873.055963] perf: interrupt took too long (329 > 1), lowering kernel.perf_event_max_sample_rate to 48500
[18873.965492] perf: interrupt took too long (420 > 411), lowering kernel.perf_event_max_sample_rate to 38000
<snip>
[18898.926809] perf: Dynamic interrupt throttling disabled, can hang your system!
[18933.376330] perf: interrupt took too long (1534 > 1481), lowering kernel.perf_event_max_sample_rate to 5000
[18942.748893] perf: interrupt took too long (1589 > 1), lowering kernel.perf_event_max_sample_rate to 5000
[18961.230616] perf: interrupt took too long (1190 > 1188), lowering kernel.perf_event_max_sample_rate to 13250
[18961.241736] perf: interrupt took too long (1495 > 1487), lowering kernel.perf_event_max_sample_rate to 10500
[18961.281641] perf: interrupt took too long (2010 > 1868), lowering kernel.perf_event_max_sample_rate to 7750
[18967.384573] perf: Dynamic interrupt throttling disabled, can hang your system!
[18982.547548] perf: interrupt took too long (2517 > 1290), lowering kernel.perf_event_max_sample_rate to 3000
[19000.662645] perf: interrupt took too long (1378 > 1), lowering kernel.perf_event_max_sample_rate to 5750
[19003.153641] perf: interrupt took too long (1576 > 1), lowering kernel.perf_event_max_sample_rate to 5000
[19020.801440] perf: interrupt took too long (2984 > 2000), lowering kernel.perf_event_max_sample_rate to 2500
[19021.901595] perf: interrupt took too long (3748 > 3730), lowering kernel.perf_event_max_sample_rate to 2000
[19023.757417] perf: Dynamic interrupt throttling disabled, can hang your system!

Anju - we missing something else?