On Mon, Sep 21, 2020 at 11:35 AM Nick Desaulniers <ndesaulni...@google.com> wrote: > > Hello DAX maintainers, > I noticed our PPC64LE builds failing last night: > https://travis-ci.com/github/ClangBuiltLinux/continuous-integration/jobs/388047043 > https://travis-ci.com/github/ClangBuiltLinux/continuous-integration/jobs/388047056 > https://travis-ci.com/github/ClangBuiltLinux/continuous-integration/jobs/388047099 > and looking on lore, I see a fresh report from KernelCI against arm: > https://lore.kernel.org/linux-next/?q=dax_supported > > Can you all please take a look? More concerning is that I see this > failure on mainline. It may be interesting to consider how this was > not spotted on -next.
The failure is fixed with commit 88b67edd7247 ("dax: Fix compilation for CONFIG_DAX && !CONFIG_FS_DAX"). I rushed the fixes that led to this regression with insufficient exposure because it was crashing all users. I thought the 2 kbuild-robot reports I squashed covered all the config combinations, but there was a straggling report after I sent my -rc6 pull request. The baseline process escape for all of this was allowing a unit test triggerable insta-crash upstream in the first instance necessitating an urgent fix.