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[ Upstream commit32ca98feab] The fix referenced below causes a crash when an ERSPAN tunnel is created without passing IFLA_INFO_DATA. Fix by validating passed-in data in the same way as ipgre does. Fixes:e1f8f78ffe("net: ip_gre: Separate ERSPAN newlink / changelink callbacks") Reported-by: syzbot+1b4ebf4dae4e510dd219@syzkaller.appspotmail.com Signed-off-by: Petr Machata <petrm@mellanox.com> Signed-off-by: David S. Miller <davem@davemloft.net> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.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.
See Documentation/00-INDEX for a list of what is contained in each file.
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.
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