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Jeongjun Park 9da49aa80d tun: Add missing bpf_net_ctx_clear() in do_xdp_generic()
There are cases where do_xdp_generic returns bpf_net_context without
clearing it. This causes various memory corruptions, so the missing
bpf_net_ctx_clear must be added.

Reported-by: syzbot+44623300f057a28baf1e@syzkaller.appspotmail.com
Fixes: fecef4cd42 ("tun: Assign missing bpf_net_context.")
Signed-off-by: Jeongjun Park <aha310510@gmail.com>
Acked-by: Jason Wang <jasowang@redhat.com>
Reviewed-by: Willem de Bruijn <willemb@google.com>
Reported-by: syzbot+3c2b6d5d4bec3b904933@syzkaller.appspotmail.com
Reported-by: syzbot+707d98c8649695eaf329@syzkaller.appspotmail.com
Reported-by: syzbot+c226757eb784a9da3e8b@syzkaller.appspotmail.com
Reported-by: syzbot+61a1cfc2b6632363d319@syzkaller.appspotmail.com
Reported-by: syzbot+709e4c85c904bcd62735@syzkaller.appspotmail.com
Signed-off-by: David S. Miller <davem@davemloft.net>
History 2024-07-29 10:55:15 +01:00
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README

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 reStructuredText 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.