Re: autofs: add autofs_parse_fd()

[Anders Roxell]

On Fri, 20 Oct 2023 at 08:37, Arnd Bergmann <arnd@xxxxxxxx> wrote:
>
> On Thu, Oct 19, 2023, at 17:27, Naresh Kamboju wrote:
> > The qemu-x86_64 and x86_64 booting with 64bit kernel and 32bit rootfs we call
> > it as compat mode boot testing. Recently it started to failed to get login
> > prompt.
> >
> > We have not seen any kernel crash logs.
> >
> > Anders, bisection is pointing to first bad commit,
> > 546694b8f658 autofs: add autofs_parse_fd()
> >
> > Reported-by: Linux Kernel Functional Testing <lkft@xxxxxxxxxx>
> > Reported-by: Anders Roxell <anders.roxell@xxxxxxxxxx>
>
> I tried to find something in that commit that would be different
> in compat mode, but don't see anything at all -- this appears
> to be just a simple refactoring of the code, unlike the commits
> that immediately follow it and that do change the mount
> interface.
>
> Unfortunately this makes it impossible to just revert the commit
> on top of linux-next. Can you double-check your bisection by
> testing 546694b8f658 and the commit before it again?

I tried these two patches again:
546694b8f658 ("autofs: add autofs_parse_fd()") - doesn't boot
bc69fdde0ae1 ("autofs: refactor autofs_prepare_pipe()") - boots

>
> What are the exact mount options you pass to autofs in your fstab?

cat /etc/fstab
# UNCONFIGURED FSTAB FOR BASE SYSTEM

Cheers,
Anders