Re: [PATCH] Fix cuse ENOMEM ioctl breakage in 4.20.0

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On Fri, Aug 2, 2019 at 10:15 AM Greg Kroah-Hartman
<gregkh@xxxxxxxxxxxxxxxxxxx> wrote:
>
> On Tue, May 28, 2019 at 03:12:28PM +0200, Miklos Szeredi wrote:
> > On Sat, May 18, 2019 at 3:58 PM Andreas Steinmetz <ast@xxxxxxxx> wrote:
> >
> > > > On Sun, Dec 30, 2018 at 10:52 AM Andreas Steinmetz <ast@xxxxxxxx> wrote:
> > > > > This must have happened somewhen after 4.17.2 and I did find it in
> > > > > 4.20.0:
> > > > >
> > > > > cuse_process_init_reply() doesn't initialize fc->max_pages and thus all
> > > > > cuse bases ioctls fail with ENOMEM.
> > > > >
> > > > > Patch which fixes this is attached.
> > > >
> > > > Thanks.  Pushed a slightly different patch:
> > > >
> > > > https://git.kernel.org/pub/scm/linux/kernel/git/mszeredi/fuse.git/commit/?h=for-next&id=666a40e87038221d45d47aa160b26410fd67c1d2
> > > >
> >
> > > It got broken again, ENONEM.
> > > I do presume that commit 5da784cce4308ae10a79e3c8c41b13fb9568e4e0 is the
> > > culprit. Could you please fix this and, please, could somebody do a cuse
> > > regression test after changes to fuse?
> >
> > Hi,
> >
> > Can you please tell us which kernel is broken?
>
> Did this ever get resolved?

Apparently yes, in v4.20.8 (f191c028cc33).  No other kernel was
affected, AFAICS.

Thanks,
Miklos



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