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[ Upstream commitfb24274546] syzbot reported the use of uninitialized udp6_addr::sin6_scope_id. We can just set ::sin6_scope_id to zero, as tunnels are unlikely to use an IPv6 address that needs a scope id and there is no interface to bind in this context. For net-next, it looks different as we have cfg->bind_ifindex there so we can probably call ipv6_iface_scope_id(). Same for ::sin6_flowinfo, tunnels don't use it. Fixes:8024e02879("udp: Add udp_sock_create for UDP tunnels to open listener socket") Reported-by: syzbot+c56449ed3652e6720f30@syzkaller.appspotmail.com Cc: Jon Maloy <jon.maloy@ericsson.com> Signed-off-by: Cong Wang <xiyou.wangcong@gmail.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.