00f239eccf
Test if the verifier verifies nullable pointer arguments correctly for BPF struct_ops programs. "test_maybe_null" in struct bpf_testmod_ops is the operator defined for the test cases here. A BPF program should check a pointer for NULL beforehand to access the value pointed by the nullable pointer arguments, or the verifier should reject the programs. The test here includes two parts; the programs checking pointers properly and the programs not checking pointers beforehand. The test checks if the verifier accepts the programs checking properly and rejects the programs not checking at all. Signed-off-by: Kui-Feng Lee <thinker.li@gmail.com> Link: https://lore.kernel.org/r/20240209023750.1153905-5-thinker.li@gmail.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.