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[ Upstream commit7fa0b526f8] The result of nlmsg_find_attr() 'br_spec' is dereferenced in nla_for_each_nested(), but it can take NULL value in nla_find() function, which will result in an error. Found by Linux Verification Center (linuxtesting.org) with SVACE. Fixes:51616018dd("i40e: Add support for getlink, setlink ndo ops") Signed-off-by: Natalia Petrova <n.petrova@fintech.ru> Reviewed-by: Jesse Brandeburg <jesse.brandeburg@intel.com> Tested-by: Gurucharan G <gurucharanx.g@intel.com> (A Contingent worker at Intel) Signed-off-by: Tony Nguyen <anthony.l.nguyen@intel.com> Link: https://lore.kernel.org/r/20230209172833.3596034-1-anthony.l.nguyen@intel.com Signed-off-by: Jakub Kicinski <kuba@kernel.org> Signed-off-by: Sasha Levin <sashal@kernel.org>
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.