Re: [PATCH v6 1/9] block: partitions: of: Skip child nodes without reg property

Rob Herring <[email protected]> Tue, 30 Jun 2026 13:02:19 -0500
Newsgroups org.infradead.lists.ath10k,org.kernel.vger.linux-arm-msm,org.kernel.vger.linux-block,org.kernel.vger.linux-bluetooth,org.kernel.vger.linux-devicetree,org.kernel.vger.linux-kernel,org.kernel.vger.linux-mmc,org.kernel.vger.linux-wireless,org.kernel.vger.netdev,org.kernel.vger.stable
Message-ID <[email protected]>
On Mon, Jun 29, 2026 at 10:55:20AM +0200, Loic Poulain wrote:
> Child nodes of a fixed-partitions node are not necessarily partition
> entries, for example an nvmem-layout node has no reg property. The
> current code passes a NULL reg pointer and uninitialized len to the
> length check, which can result in a kernel panic or silent failure to
> register any partitions.

That does not sound right to me. A fixed-partitions node should only be 
defining partitions with address ranges. I would expect a partition node 
could be nvmem-layout, but not the whole address range. If you wanted 
the latter, then just do:

partitions {
  ...
};

nvmem-layout {
  ...
};

Rob