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From: Sachin Sant <sachinp@linux.vnet.ibm.com>
To: linuxppc-dev@lists.ozlabs.org
Subject: [powerpc/merge] System crash during cpu offline/online operation
Date: Fri, 11 Dec 2020 15:47:21 +0530	[thread overview]
Message-ID: <F4809152-C7F5-4ED8-B071-85A9115BD29D@linux.vnet.ibm.com> (raw)

I am observing system crash during a cpu offline/online operation
with latest merge branch code running in a PowerVM LPAR (P8 onwards)

# uname -r
5.10.0-rc7-01792-g244569c777ca
# ppc64_cpu --smt=1
[  244.205194] cpu 1 (hwid 1) Ready to die…
………
……...
[  247.015113] cpu 30 (hwid 30) Ready to die...
[  247.104973] cpu 31 (hwid 31) Ready to die…
# ppc64_cpu --smt=8

At this point the LPAR reboots instantly without any trace message.

IBM IBM IBM IBM IBM IBM IBM IBM IBM IBM IBM IBM IBM IBM IBM IBM IBM IBM IBM IBM 
………..
………..
IBM IBM IBM IBM IBM IBM IBM IBM IBM IBM IBM IBM IBM IBM IBM IBM IBM IBM IBM IBM 

          1 = SMS Menu                          5 = Default Boot List
          8 = Open Firmware Prompt              6 = Stored Boot List
          9 = Restricted Open Firmware Prompt

…….
…….

merge commit 9acd775e45 (based on rc6) was good. Mainline 5.10.0-rc7 also does
not exhibit this problem. 

Thanks
-Sachin
 

             reply	other threads:[~2020-12-11 10:19 UTC|newest]

Thread overview: 2+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2020-12-11 10:17 Sachin Sant [this message]
2020-12-12 10:07 ` [powerpc/merge] System crash during cpu offline/online operation Sachin Sant

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