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Eduard Zingerman says: ==================== For a device bound BPF program with flag BPF_F_XDP_DEV_BOUND_ONLY, in case if device does not support offload, __bpf_prog_dev_bound_init() creates a dummy bpf_offload_netdev struct with .offdev field set to NULL. This dummy struct might be reused for programs without this flag bound to the same device. However, bpf_prog_offload_verifier_prep() that uses bpf_offload_netdev assumes that .offdev field cannot be NULL. This bug was reported by syzbot in [1]. [1] https://lore.kernel.org/bpf/000000000000d97f3c060479c4f8@google.com/ ==================== Signed-off-by: Martin KaFai Lau <martin.lau@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.