vrbagal1 <vrbagal1@xxxxxxxxxxxxxxxxxx> writes: > On 2018-06-07 13:12, Bart Van Assche wrote: >> On Thu, 2018-06-07 at 12:56 +0530, Venkat Rao B wrote: >>> On Thursday 07 June 2018 12:46 PM, Bart Van Assche wrote: >>> > On Thu, 2018-06-07 at 12:38 +0530, vrbagal1 wrote: >>> > > Observing Kernel oops and machine reboots while executing memory hotplug >>> > > test case, on Power8 Baremetal machine. >>> > > >>> > > I see this is introduced some where between rc6 and 4.17. >>> > >>> > Please provide the exact versions (git commit IDs) of the kernel versions >>> > you have tested. >>> >>> Commit Id ---> 5037be168f >> >> The reason I was asking for the commit ID is because I saw that >> clone_endio() >> occurs in the oops which means that the dm driver is involved. An >> important fix >> for the dm driver went upstream recently, namely d37753540568 ("dm: Use >> kzalloc >> for all structs with embedded biosets/mempools"). Can you double check >> whether >> that commit it present in your tree? If it is not present, please >> update to the >> latest master and retest. If it is present, please report how to >> reproduce >> this oops to Kent Overstreet, Jens Axboe, linux-block and Mike Snitzer. >> >> Thanks, >> >> Bart. > > > Yes, the fix is present in the tree, which I have tested. > > Steps to reproduce: > > Step1: Clone and Install avocado git clone > https://github.com/avocado-framework/avocado.git > Step2: Clone > https://github.com/avocado-framework-tests/avocado-misc-tests.git > Test case is > https://github.com/avocado-framework-tests/avocado-misc-tests/blob/master/memory/memhotplug.py > Step3: Command to run the test is avocado run > avocado-misc-tests/memory/memhotplug.py That gave me: $ avocado run avocado-misc-tests/memory/memhotplug.py avocado: command not found Was I meant to install it? I tried this which worked (I think): $ ./scripts/avocado run avocado-misc-tests/memory/memhotplug.py Failed to load plugin from module "avocado_runner_vm": ImportError('No module named libvirt',) JOB ID : 28deb5a455fb876a7e177deb2b46eab640f313c8 JOB LOG : /home/michael/avocado/job-results/job-2018-06-07T22.27-28deb5a/job.log (1/4) avocado-misc-tests/memory/memhotplug.py:memstress.test_hotplug_loop: PASS (10.62 s) (2/4) avocado-misc-tests/memory/memhotplug.py:memstress.test_hotplug_toggle: PASS (245.15 s) (3/4) avocado-misc-tests/memory/memhotplug.py:memstress.test_dlpar_mem_hotplug: PASS (0.37 s) (4/4) avocado-misc-tests/memory/memhotplug.py:memstress.test_hotplug_per_numa_node: PASS (41.09 s) RESULTS : PASS 4 | ERROR 0 | FAIL 0 | SKIP 0 | WARN 0 | INTERRUPT 0 | CANCEL 0 JOB TIME : 323.45 s JOB HTML : /home/michael/avocado/job-results/job-2018-06-07T22.27-28deb5a/results.html So what's different about your system? What does 'lsblk -O' say on your system? cheers