Re: [powerpc/powervm]kernel BUG at mm/memory_hotplug.c:1864!

On 11/06/18 17:41, vrbagal1 wrote:

On 2018-06-08 17:45, Oscar Salvador wrote:

quoted

On Fri, Jun 08, 2018 at 05:11:24PM +0530, vrbagal1 wrote:

quoted

On 2018-06-08 16:58, Oscar Salvador wrote:

quoted

On Fri, Jun 08, 2018 at 04:44:24PM +0530, vrbagal1 wrote:

quoted

Greetings!!!

I am seeing kernel bug followed by oops message and system reboots,
while
running dlpar memory hotplug test.

Machine Details: Power6 PowerVM Platform
GCC version: (gcc version 4.8.3 20140911 (Red Hat 4.8.3-7) (GCC))
Test case: dlpar memory hotplug test (https://github.com/avocado-framework-tests/avocado-misc-tests/blob/master/memory/memhotplug.py)
Kernel Version: Linux version 4.17.0-autotest

I am seeing this bug on rc7 as well.

Observing similar traces on linux next kernel: 4.17.0-next-20180608-autotest

 Block size [0x4000000] unaligned hotplug range: start 0x220000000, size 0x1000000

size < block_size in this case, why? how? Could you confirm that the block size is 64MB and your trying to remove 16MB

Balbir Singh.