09dba21b43
For ports that have a NULL dp->bridge_dev, dsa_port_to_bridge_port() also returns NULL as expected. Issue #1 is that we are performing a NULL pointer dereference on brport_dev. Issue #2 is that these are ports on which switchdev_bridge_port_offload has not been called, so we should not call switchdev_bridge_port_unoffload on them either. Both issues are addressed by checking against a NULL brport_dev in dsa_port_pre_bridge_leave and exiting early. Fixes: 2f5dc00f7a3e ("net: bridge: switchdev: let drivers inform which bridge ports are offloaded") Signed-off-by: Vladimir Oltean <vladimir.oltean@nxp.com> Signed-off-by: David S. Miller <davem@davemloft.net>
Linux kernel
============
There are several guides for kernel developers and users. These guides can
be rendered in a number of formats, like HTML and PDF. Please read
Documentation/admin-guide/README.rst first.
In order to build the documentation, use ``make htmldocs`` or
``make pdfdocs``. The formatted documentation can also be read online at:
https://www.kernel.org/doc/html/latest/
There are various text files in the Documentation/ subdirectory,
several of them using the Restructured Text markup notation.
Please read the Documentation/process/changes.rst file, as it contains the
requirements for building and running the kernel, and information about
the problems which may result by upgrading your kernel.