fecef4cd42
During the introduction of struct bpf_net_context handling for XDP-redirect, the tun driver has been missed. Jakub also pointed out that there is another call chain to do_xdp_generic() originating from netif_receive_skb() and drivers may use it outside from the NAPI context. Set the bpf_net_context before invoking BPF XDP program within the TUN driver. Set the bpf_net_context also in do_xdp_generic() if a xdp program is available. Reported-by: syzbot+0b5c75599f1d872bea6f@syzkaller.appspotmail.com Reported-by: syzbot+5ae46b237278e2369cac@syzkaller.appspotmail.com Reported-by: syzbot+c1e04a422bbc0f0f2921@syzkaller.appspotmail.com Fixes: 401cb7dae8130 ("net: Reference bpf_redirect_info via task_struct on PREEMPT_RT.") Signed-off-by: Sebastian Andrzej Siewior <bigeasy@linutronix.de> Link: https://patch.msgid.link/20240704144815.j8xQda5r@linutronix.de Signed-off-by: Jakub Kicinski <kuba@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 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.