Re: [syzbot] INFO: task hung in fuse_simple_request

[Miklos Szeredi]

On Fri, 6 Aug 2021 at 11:15, Dmitry Vyukov <dvyukov@xxxxxxxxxx> wrote:
>
> ",On Fri, 6 Aug 2021 at 10:54, Miklos Szeredi <miklos@xxxxxxxxxx> wrote:
> >
> > Hi,
> >
> > I'm not sure what to make of this report.
> >
> > Does syzbot try to kill all tasks before generating such a hung task report?
> >
> > Does it use the fuse specific /sys/fs/fuse/connections/*/abort to
> > terminate stuck filesystems?
>
> Hi Miklos,
>
> Grepping the C reproducer for "/sys/fs/fuse/connections", it seems
> that it tries to abort all connections.

Hi  Dmitry,

So this could indicate a bug in the abort code of fuse, or it could
indicate that the test case DoS-es the system so that the abort code
simply doesn't get the resources to execute.

Can the two be differentiated somehow?

Thanks,
Miklos