------- Comment From indira.pr...@in.ibm.com 2018-04-26 04:18 EDT------- boslcp3 hit with 166588 again. It was running with Guestavo's Patch mentioned in c151. The system was running from last 40 hours, but we observed slowness during y'day evening. Today morning it was not reachable and noticed in petiboot. Multiple symptoms are seen now
(1) When we exit from petitboot and it rebooted, but crashed couple of times and generated vmcore. vmcore path: kte111.isst.aus.stglabs.ibm.com 9.3.111.155 [kte/don2rry] kte111:/LOGS/boslcp3/201804252219 kte111:/LOGS/boslcp3/201804260138 (2) Again it crashed and prior reaching to petiboot its dropping to xmon. Linux version 4.15.14-openpower1 (smc@smc-desktop) (gcc version 6.4.0 (Buildroot 2018.02-00002-g05e5240)) #2 SMP Fri Apr 20 09:34:06 PDT 2018 enter ? for help [c000200ff1743cb0] c000000000089dc8 process_one_work+0x24c/0x328 (unreliable) [c000200ff1743d40] c00000000008a4a4 worker_thread+0x2e4/0x3a8 [c000200ff1743dc0] c00000000008ffc0 kthread+0x14c/0x154 [c000200ff1743e30] c00000000000b594 ret_from_kernel_thread+0x5c/0xc8 68:mon (3) Used X to come to dump and it came out from xmon booted & enters into petitboot menu. (4) selected kernel & booted where it again rebooted. Attached console logs for step(3) & step(4). (5) Powered off & on again and tried to boot with kernel where it dumps rcu stall traces & below error & booted again 37.614879] Kernel panic - not syncing: Fatal exception in interrupt Attached console logs (6)After multiple attempts of reboot,boslcp3 host came up with kernel root@boslcp3:~# uname -a Linux boslcp3 4.15.0-15-generic #16+bug166588 SMP Mon Apr 23 11:50:06 CDT 2018 ppc64le ppc64le ppc64le GNU/Linux NOTE: If we reboot system we can recreate the above issue Regards, Indira -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1762844 Title: ISST-LTE:KVM:Ubuntu1804:BostonLC:boslcp3: Host crashed & enters into xmon after moving to 4.15.0-15.16 kernel To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu-power-systems/+bug/1762844/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
