[syzbot] Monthly lsm report (Sep 2024)

[Kent Overstreet]

On Sat, Sep 28, 2024 at 03:49:27PM GMT, Tetsuo Handa wrote:
> On 2024/09/28 10:25, Kent Overstreet wrote:
> > And looking further, I don't see anyhting in the console log from when
> > bcachefs actually mounted (???), which means I don't think I have enough
> > to go on. It's clearly an upgrade path issue - we didn't run
> > check_allocations as is required when upgrading to 1.11 - but it's not
> > reproducing for me when I run tests with old tools.
> > 
> > Can we get some more information about the syzbot reproducer? Exact
> > tools version, format command and mount command.
> 
> Reproducer for this bug is not yet found. But syzbot does not use userspace
> tools. That is, testing with old (or new) tools will not help. Please note
> that syzbot uses crafted (intentionally corrupted) filesystem images. If the
> kernel side depends on sanity checks / validations done by the userspace
> side, syzbot will find oversights on the kernel side. Please don't make any
> assumptions made by the userspace tools.
> 

You seem to be confused; how do you expect sysbot to test a filesystem
without the format comand?