Re: [v4.12-rc1 regression] mount ext4 fs results in kernel crash on PPC64le host

Eryu Guan [off-list ref] writes:

On Thu, Jun 29, 2017 at 08:27:11PM +1000, Michael Ellerman wrote:

quoted

Eryu Guan [off-list ref] writes:

quoted

Hi all,

Li Wang and I are constantly seeing ppc64le hosts crashing due to bad
page access. But it's not reproducing on every ppc64le host we've
tested, but it usually happened in filesystem testings.

<snip>

quoted

And I've confirmed that reverting above commit 'resolves' the crash.

Do you mean ~v4.12-rc7 with that commit reverted still triggers the
crash?

Correct. I also confirmed that reverting it when it was HEAD also fixed
the crash.

OK. The former, reverting it on top of mainline is more informative.

cheers