------- Comment From pavsu...@in.ibm.com 2018-06-05 01:26 EDT------- I have downloaded the test kernel from the link and installed the same.
root@ltc-wspoon8:~# dpkg -i linux-modules-4.15.0-22-generic_4.15.0-22.25~lp1774964_ppc64el.deb Selecting previously unselected package linux-modules-4.15.0-22-generic. (Reading database ... 74250 files and directories currently installed.) Preparing to unpack linux-modules-4.15.0-22-generic_4.15.0-22.25~lp1774964_ppc64el.deb ... Unpacking linux-modules-4.15.0-22-generic (4.15.0-22.25~lp1774964) ... Setting up linux-modules-4.15.0-22-generic (4.15.0-22.25~lp1774964) ... root@ltc-wspoon8:~# dpkg -i linux-image-unsigned-4.15.0-22-generic_4.15.0-22.25~lp1774964_ppc64el.deb Selecting previously unselected package linux-image-unsigned-4.15.0-22-generic. (Reading database ... 80003 files and directories currently installed.) Preparing to unpack linux-image-unsigned-4.15.0-22-generic_4.15.0-22.25~lp1774964_ppc64el.deb ... Unpacking linux-image-unsigned-4.15.0-22-generic (4.15.0-22.25~lp1774964) ... Setting up linux-image-unsigned-4.15.0-22-generic (4.15.0-22.25~lp1774964) ... I: /boot/vmlinux is now a symlink to vmlinux-4.15.0-22-generic I: /boot/initrd.img is now a symlink to initrd.img-4.15.0-22-generic Processing triggers for linux-image-unsigned-4.15.0-22-generic (4.15.0-22.25~lp1774964) ... /etc/kernel/postinst.d/initramfs-tools: update-initramfs: Generating /boot/initrd.img-4.15.0-22-generic W: Possible missing firmware /lib/firmware/ast_dp501_fw.bin for module ast /etc/kernel/postinst.d/kdump-tools: kdump-tools: Generating /var/lib/kdump/initrd.img-4.15.0-22-generic W: Possible missing firmware /lib/firmware/ast_dp501_fw.bin for module ast /etc/kernel/postinst.d/zz-update-grub: Generating grub configuration file ... Found linux image: /boot/vmlinux-4.15.0-22-generic Found initrd image: /boot/initrd.img-4.15.0-22-generic Found linux image: /boot/vmlinux-4.15.0-20-generic Found initrd image: /boot/initrd.img-4.15.0-20-generic done root@ltc-wspoon8:~# dpkg -i linux-modules-extra-4.15.0-22-generic_4.15.0-22.25~lp1774964_ppc64el.deb (Reading database ... 80006 files and directories currently installed.) Preparing to unpack linux-modules-extra-4.15.0-22-generic_4.15.0-22.25~lp1774964_ppc64el.deb ... Unpacking linux-modules-extra-4.15.0-22-generic (4.15.0-22.25~lp1774964) over (4.15.0-22.25~lp1774964) ... Setting up linux-modules-extra-4.15.0-22-generic (4.15.0-22.25~lp1774964) ... Processing triggers for linux-image-unsigned-4.15.0-22-generic (4.15.0-22.25~lp1774964) ... /etc/kernel/postinst.d/initramfs-tools: update-initramfs: Generating /boot/initrd.img-4.15.0-22-generic W: Possible missing firmware /lib/firmware/ast_dp501_fw.bin for module ast /etc/kernel/postinst.d/kdump-tools: kdump-tools: Generating /var/lib/kdump/initrd.img-4.15.0-22-generic W: Possible missing firmware /lib/firmware/ast_dp501_fw.bin for module ast /etc/kernel/postinst.d/zz-update-grub: Generating grub configuration file ... Found linux image: /boot/vmlinux-4.15.0-22-generic Found initrd image: /boot/initrd.img-4.15.0-22-generic Found linux image: /boot/vmlinux-4.15.0-20-generic Found initrd image: /boot/initrd.img-4.15.0-20-generic done Then again triggered the test scenario and verified the bug with the test kernel. root@ltc-wspoon8:~# uname -a Linux ltc-wspoon8 4.15.0-22-generic #25~lp1774964 SMP Mon Jun 4 19:51:41 UTC 2018 ppc64le ppc64le ppc64le GNU/Linux root@ltc-wspoon8:~# ./statedisable.sh ./statedisable.sh: line 8: /sys/devices/system/cpu/cpu*/cpuidle/state5/disable: No such file or directory ./statedisable.sh: line 9: /sys/devices/system/cpu/cpu*/cpuidle/state6/disable: No such file or directory ./statedisable.sh: line 10: /sys/devices/system/cpu/cpu*/cpuidle/state7/disable: No such file or directory ./statedisable.sh: line 11: /sys/devices/system/cpu/cpu*/cpuidle/state8/disable: No such file or directory root@ltc-wspoon8:~# ./run_workload.sh root@ltc-wspoon8:~# ./scom_addr_p9.sh 0x1001080c 7 EQ[ 1]: 0x1101080c EX[ 3]: 0x11010c0c C[ 7]: 0x3701080c root@ltc-wspoon8:~# ./skiboot/external/xscom-utils/getscom -c 0x8 0x11010c0c 0000000000000000 root@ltc-wspoon8:~# ./skiboot/external/xscom-utils/putscom -c 0x8 0x11010c0c 0c00000000000000 0c00000000000000 In the SOL console we see the following Machine Check Interrupt messages as expected. Ubuntu 18.04 LTS ltc-wspoon8 hvc0 ltc-wspoon8 login: [ 265.635189] Disabling lock debugging due to kernel taint [ 265.635194] Severe Machine check interrupt [Not recovered] [ 265.63[ 395.356139869,0] OPAL: Reboot requested due to Platform error. [ 395.357920113,3] OPAL: Reboot requested due to Platform error.[ 395.361558129,5] Software initiated checkstop disabled. [ 395.362802920,5] OPAL: Reboot request... 5205] NIP [c000000000ac4da8]: menu_select+0x98/0x600 [ 265.635206] Initiator: CPU [ 265.635208] Error type: UE [Load/Store] [ 265.635211] opal: Hardware platform error: Unrecoverable Machine Check exception [ 265.635217] CPU: 99 PID: 0 Comm: swapper/99 Tainted: G M 4.15.0-22-generic #25~lp1774964 [ 265.635220] NIP: c000000000ac4da8 LR: c000000000ac4da4 CTR: c000000000ac4d10 [ 265.635223] REGS: c000000007af3d80 TRAP: 0200 Tainted: G M (4.15.0-22-generic) [ 265.635225] MSR: 9000000002a0b033 <SF,HV,VEC,VSX,EE,FP,ME,IR,DR,RI,LE> CR: 44004428 XER: 00000000 [ 265.635237] CFAR: c000000000184cfc DAR: 00002018fafe7240 DSISR: 00008000 SOFTE: 0 [ 265.635237] GPR00: c000000000ac4da4 c0002018ec3cbdd0 c0000000016eaf00 000000007fffffff [ 265.635237] GPR04: c0002018fafe6fd8 0000000001359d04 c0002018fafd1014 c0000000011c1008 [ 265.635237] GPR08: c0000000017220e0 fffffffffffff000 00002018f9e10000 c0002018fafe727c [ 265.635237] GPR12: c000000000ac4d10 c000000007a64100 c0002018ec3cbf90 0000000000000000 [ 265.635237] GPR16: 0000000000000000 c000000000047fa0 c000000000047f70 c0000000011b5380 [ 265.635237] GPR20: 0000000000000800 c000000001722494 0000000000000063 0000000000000008 [ 265.635237] GPR24: c0002018fafc0030 c0000000011d723c 0000000077359400 c0002018fafe723c [ 265.635237] GPR28: 00002018f9e10000 c0002018fafe6fd8 c00000000161ca08 c0000000011d723c [ 265.635275] NIP [c000000000ac4da8] menu_select+0x98/0x600 [ 265.635279] LR [c000000000ac4da4] menu_select+0x94/0x600 [ 265.635280] Call Trace: [ 265.635287] [c0002018ec3cbdd0] [c00000000161ca20] powernv_idle_driver+0x18/0x3e8 (unreliable) [ 265.635292] [c0002018ec3cbe50] [c000000000ac28e8] cpuidle_select+0x38/0x50 [ 265.635299] [c0002018ec3cbe70] [c000000000173f3c] do_idle+0x29c/0x330 [ 265.635303] [c0002018ec3cbec0] [c000000000174208] cpu_startup_entry+0x38/0x50 [ 265.635308] [c0002018ec3cbef0] [c00000000004a4f0] start_secondary+0x4f0/0x510 [ 265.635313] [c0002018ec3cbf90] [c00000000000ab6c] start_secondary_prolog+0x10/0x14 [ 265.635315] Instruction dump: [ 265.635318] 38600001 4b6bf96d 60000000 7c7a1b78 e87801d8 2fa30000 419e03e8 3920f000 [ 265.635325] 7fa34840 419d03dc 4b6bff51 60000000 <813b0004> 2f890000 409e03dc 7f9a1800 ------- Comment From pavsu...@in.ibm.com 2018-06-05 01:27 EDT------- With the test kernel with all the patches, the bug is resolved. -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1774964 Title: [LTCTest][OPAL][OP910.20] WARNING: CPU: 97 PID: 11965 at /build/linux- 0zaMZw/linux-4.15.0/kernel/sched/core.c:1189 set_task_cpu+0x240/0x250 To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu-power-systems/+bug/1774964/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
