[LTP] [PATCH 0/1] Possible bug in zram on ppc64le on vfat

Minchan Kim minchan@kernel.org
Fri Nov 11 00:04:40 CET 2022

On Mon, Nov 07, 2022 at 10:47:33PM +0100, Petr Vorel wrote:
> Hi Minchan,
> > On Mon, Nov 07, 2022 at 08:11:35PM +0100, Petr Vorel wrote:
> > > Hi all,
> > > following bug is trying to workaround an error on ppc64le, where
> > > zram01.sh LTP test (there is also kernel selftest
> > > tools/testing/selftests/zram/zram01.sh, but LTP test got further
> > > updates) has often mem_used_total 0 although zram is already filled.
> > Hi, Petr,
> > Is it happening on only ppc64le?
> I haven't seen it on other archs (x86_64, aarch64).
> > Is it a new regression? What kernel version did you use?
> Found on openSUSE kernel, which uses stable kernel releases 6.0.x.
> It's probably much older, first I've seen it some years ago (I'm not able to find kernel version), but it was random. Now it's much more common.
> Test runs on VM (I can give qemu command or whatever you need to know about it)
> I'll try to verify it on some bare metal ppc64le.

Hi Petr and Martin,

Thanks for testing and meaning information.

Could you tell how I could create VM to run ppc64le and run the test?
I'd like to reproduce in my local to debug it.


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