== Comment: #0 - Pridhiviraj Paidipeddi - 2017-01-03 05:34:32 == ---Problem Description--- After 3 CPU's are garded, lscpu failed to list CPU max and min frequencies Contact Information = ---uname output--- Linux p8wookie 4.8.0-32-generic #34~16.04.1-Ubuntu SMP Tue Dec 13 17:01:57 UTC 2016 ppc64le ppc64le ppc64le GNU/Linux Machine Type = PowerNV 8284-22A ---Debugger--- A debugger is not configured ---Steps to Reproduce--- 1. Read lscpu output 2. Inject HMI Non recoverable error three times 3. Read lscpu output again compare the output cpu frequencies will list as NULL Stack trace output: no Oops output: no Userspace tool common name: lscpu Userspace rpm: util-linux The userspace tool has the following bit modes: 64-bit System Dump Info: The system is not configured to capture a system dump. Userspace tool obtained from project website: na *Additional Instructions for : -Post a private note with access information to the machine that the bug is occuring on. -Attach sysctl -a output output to the bug. -Attach ltrace and strace of userspace application. Before CPU's are garded: root@p8wookie:~# lscpu Architecture: ppc64le Byte Order: Little Endian CPU(s): 112 On-line CPU(s) list: 0-71,80-103,112-127 Thread(s) per core: 8 Core(s) per socket: 3 Socket(s): 4 NUMA node(s): 4 Model: 2.1 (pvr 004b 0201) Model name: POWER8E (raw), altivec supported CPU max MHz: 4322.0000 CPU min MHz: 2061.0000 L1d cache: 64K L1i cache: 32K L2 cache: 512K L3 cache: 8192K NUMA node0 CPU(s): 0-31 NUMA node1 CPU(s): 32-63 NUMA node16 CPU(s): 64-71,80-95 NUMA node17 CPU(s): 96-103,112-127 After 4 cores are garded: root@p8wookie:~# lscpu Architecture: ppc64le Byte Order: Little Endian CPU(s): 96 On-line CPU(s) list: 8-55,64-71,80-103,112-127 Thread(s) per core: 8 Core(s) per socket: 3 Socket(s): 4 NUMA node(s): 4 Model: 2.1 (pvr 004b 0201) Model name: POWER8E (raw), altivec supported CPU max MHz: (null) CPU min MHz: (null) L1d cache: 64K L1i cache: 32K L2 cache: 512K L3 cache: 8192K NUMA node0 CPU(s): 8-31 NUMA node1 CPU(s): 32-55 NUMA node16 CPU(s): 64-71,80-95 NUMA node17 CPU(s): 96-103,112-127 == Comment: #1 - Pridhiviraj Paidipeddi - 2017-01-11 07:06:59 == root@p8wookie:~# dmesg |grep -i powernv [ 0.000000] Using PowerNV machine description [ 0.331564] EEH: PowerNV platform initialized [ 0.907250] powernv-rng: Registering arch random hook. [ 1.504063] powernv-cpufreq: cpufreq pstate min -68 nominal -5 max 0 [ 1.507167] powernv_idle_driver registered [ 34.184048] powernv_rng: Registered powernv hwrng. [ 34.185619] ipmi-powernv ibm,opal:ipmi: Unable to map irq from device tree [ 34.210966] ipmi-powernv ibm,opal:ipmi: Found new BMC (man_id: 0x000000, prod_id: 0x0000, dev_id: 0x00) root@p8wookie:~# cat /sys/firmware/opal/msglog | grep -i occ [ 42.297825315,7] OCC Common Area at 0x3b00000 size 1MB [ 42.297854780,7] OCC Common Area at 0x2000800000 size 1MB [ 42.297884305,7] OCC Common Area at 0x2000800000 size 1MB [ 42.297914258,7] OCC Common Area at 0x2000800000 size 1MB [ 42.310897465,7] HBRT: OCC common base 0000002000800000 : 00800000 [ 42.317109440,7] HBRT: OCC common base 0000002000800000 : 00800000 [ 42.323969570,7] HBRT: OCC common base 0000002000800000 : 00800000 [ 42.330941943,7] HBRT: OCC common base 0000002000800000 : 00800000 [ 5.349544066,6] OCC: Got OCC Load message, scope=0x2 dbob=0x0 seq=0x29 [ 6.017413373,7] HBRT: OCC Load requested [ 6.017414365,7] HBRT: Calling loadOCC() homer 0000002001400000, occ_common_area 0000002000800000, chip 0000 [ 6.017553013,7] HBRT: Calling loadOCC() homer 000000003a000000, occ_common_area 0000002000800000, chip 0001 [ 6.017666150,7] HBRT: Calling loadOCC() homer 0000002800400000, occ_common_area 0000002000800000, chip 0010 [ 6.017790110,7] HBRT: Calling loadOCC() homer 0000001000400000, occ_common_area 0000002000800000, chip 0011 [ 6.017929155,6] HBRT: OCC Start requested [ 6.042511828,7] HBRT: startOCCs() rc = 0 [ 22.190466757,5] irq 11 name: psi:occ (7/8) [ 22.190474587,5] irq 20011 name: psi:occ (7/56) [ 22.193374475,7] OCC: Chip 00 Data (00000020015f8000) = 010100bcfb000000 [ 22.193376434,7] OCC: Chip 01 Data (000000003a1f8000) = 010100bcfb000000 [ 22.193378259,7] OCC: Chip 10 Data (00000028005f8000) = 010100bcfb000000 [ 22.193380201,7] OCC: Chip 11 Data (00000010005f8000) = 010100bcfb000000 [ 22.193382038,5] OCC: All Chip Rdy after 0 ms [ 22.193415815,7] OCC: CPU pstate state device tree init [ 22.193417077,7] OCC: Data ( 20015f8000) = 10100bcfb000000 0 [ 22.193418948,7] OCC: Min -68 Nom -5 Max 0 Nr States 69 [ 22.193941077,7] OCC: Chip 0 Core c PPMSR c2c2bc0008000000 [ 22.194457253,7] OCC: Chip 0 Core d PPMSR c8c8bc0008000000 [ 22.194973388,7] OCC: Chip 0 Core e PPMSR cecebc0008000000 [ 22.195536559,7] OCC: Chip 1 Core 6 PPMSR d3d3bc0008000000 [ 22.196053033,7] OCC: Chip 1 Core c PPMSR d9d9bc0008000000 [ 22.196568836,7] OCC: Chip 1 Core e PPMSR dfdfbc0008000000 [ 22.197152602,7] OCC: Chip 10 Core 5 PPMSR c2c2bc0008000000 [ 22.197668468,7] OCC: Chip 10 Core 6 PPMSR c8c8bc0008000000 [ 22.198184937,7] OCC: Chip 10 Core e PPMSR cecebc0008000000 [ 22.198730221,7] OCC: Chip 11 Core 4 PPMSR d3d3bc0008000000 [ 22.199245360,7] OCC: Chip 11 Core 5 PPMSR d9d9bc0008000000 [ 22.199760182,7] OCC: Chip 11 Core 6 PPMSR dedebc0008000000 root@p8wookie:~# root@p8wookie:~# root@p8wookie:~# lscpu Architecture: ppc64le Byte Order: Little Endian CPU(s): 96 On-line CPU(s) list: 8-31,40-63,72-119 Thread(s) per core: 8 Core(s) per socket: 3 Socket(s): 4 NUMA node(s): 4 Model: 2.1 (pvr 004b 0201) Model name: POWER8E (raw), altivec supported CPU max MHz: (null) CPU min MHz: (null) L1d cache: 64K L1i cache: 32K L2 cache: 512K L3 cache: 8192K NUMA node0 CPU(s): 8-31 NUMA node1 CPU(s): 40-63 NUMA node16 CPU(s): 72-95 NUMA node17 CPU(s): 96-119 == Comment: #3 - MAMATHA INAMDAR - 2017-01-24 00:23:03 == Not able to recreate this issue, I am facing some other issue while injecting HMI Non recoverable error Pridhivi, Can you please provide steps to reproduce with the commands == Comment: #4 - Pridhiviraj Paidipeddi - 2017-02-10 02:04:56 == Hi Mamatha I am able to reproduce with below steps. On Host: #lscpu #service kdump-tools stop #echo 10 > /proc/sys/kernel/panic On FSP: $ getscom pu.ex 10013100 -all $ putscom pu.ex 10013100 1000000000000000 -n0 -p00 -c6 Repeat the above process 4 times with each time on a different chip with master core getting injected. Then run lscpu Architecture: ppc64le Byte Order: Little Endian CPU(s): 88 On-line CPU(s) list: 16-39,48-71,80-95,104-127 Thread(s) per core: 8 Core(s) per socket: 2 Socket(s): 4 NUMA node(s): 4 Model: 2.1 (pvr 004b 0201) Model name: POWER8E (raw), altivec supported CPU max MHz: (null) CPU min MHz: (null) L1d cache: 64K L1i cache: 32K L2 cache: 512K L3 cache: 8192K NUMA node0 CPU(s): 16-31 NUMA node1 CPU(s): 32-39,48-63 NUMA node16 CPU(s): 64-71,80-95 NUMA node17 CPU(s): 104-127 == Comment: #5 - MAMATHA INAMDAR - 2017-02-21 04:40:51 == I am able to recreate this issue, I have a fix for this and will send patch soon to verify this issue. == Comment: #6 - MAMATHA INAMDAR - 2017-02-22 01:03:29 == Hi Pridhivi, I have fixed the issue and copied "lscpu" on the p8wookie system, Can you please verify and update the bug, so that I will submit patch for review Thanks Mamatha == Comment: #7 - Pridhiviraj Paidipeddi - 2017-02-22 01:14:45 == Hi mamatha Tested on the system which is already having 2 cores garded. root@p8wookie:~# lscpu Architecture: ppc64le Byte Order: Little Endian CPU(s): 112 On-line CPU(s) list: 8-31,40-127 Thread(s) per core: 8 Core(s) per socket: 3 Socket(s): 4 NUMA node(s): 4 Model: 2.1 (pvr 004b 0201) Model name: POWER8E (raw), altivec supported CPU max MHz: 4322.0000----------------------------------->Works CPU min MHz: 2061.0000------------------------------------>Works L1d cache: 64K L1i cache: 32K L2 cache: 512K L3 cache: 8192K NUMA node0 CPU(s): 8-31 NUMA node1 CPU(s): 40-63 NUMA node16 CPU(s): 64-95 NUMA node17 CPU(s): 96-127 And also made all the cores offline except one core and verified it's working fine root@p8wookie:~# ppc64_cpu --cores-on=1 root@p8wookie:~# lscpu Architecture: ppc64le Byte Order: Little Endian CPU(s): 112 On-line CPU(s) list: 8-15 Off-line CPU(s) list: 16-31,40-127 Thread(s) per core: 8 Core(s) per socket: 1 Socket(s): 1 NUMA node(s): 4 Model: 2.1 (pvr 004b 0201) Model name: POWER8E (raw), altivec supported CPU max MHz: 4322.0000---------------------------------------->Works CPU min MHz: 2061.0000----------------------------------------->Works L1d cache: 64K L1i cache: 32K L2 cache: 512K L3 cache: 8192K NUMA node0 CPU(s): 8-15 NUMA node1 CPU(s): NUMA node16 CPU(s): NUMA node17 CPU(s): root@p8wookie:~# == Comment: #11 - MAMATHA INAMDAR