RE: [PATCH 1/2] mtd: use refcount to prevent corruption

Usyskin, Alexander
2023-07-24T11:44:24Z

> > > > With this patch applied, when I load up the module, I get the same 3
> > > > devices:
> > > > /dev/mtd0
> > > > /dev/mtd0ro
> > > > /dev/mtdblock0
> > > >
> > > > Upon removal, the below 2 devices still hang around:
> > > > /dev/mtd0
> > > > /dev/mtd0ro
> > >
> > Our use-case do not produce mtdblock, maybe there are some imbalances
> of get/put?
> > I have somewhere version with pr_debug after every kref_get/put. That may
> help to catch where
> > it missed, I hope.
>
> I believe mtdblock is the good citizen here. Just disable
> CONFIG_MTD_BLOCK from your configuration and you will likely observe
> the same issue, just a bit narrowed, perhaps. Indeed, if you manage to
> follow all the get/put calls it can help to find an imbalance.
>
> Thanks,
> Miquèl

Miquel, do you have CONFIG_MTD_PARTITIONED_MASTER set in your config?

--
Thanks,
Sasha