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Xu Kuohai says: ==================== Add BPF LSM return value range check, BPF part From: Xu Kuohai <xukuohai@huawei.com> LSM BPF prog may make kernel panic when returning an unexpected value, such as returning positive value on hook file_alloc_security. To fix it, series [1] refactored LSM hook return values and added BPF return value check on top of that. Since the refactoring of LSM hooks and checking BPF prog return value patches is not closely related, this series separates BPF-related patches from [1]. v2: - Update Shung-Hsi's patch with [3] v1: https://lore.kernel.org/bpf/20240719081749.769748-1-xukuohai@huaweicloud.com/ Changes to [1]: 1. Extend LSM disabled list to include hooks refactored in [1] to avoid dependency on the hooks return value refactoring patches. 2. Replace the special case patch for bitwise AND on [-1, 0] with Shung-Hsi's general bitwise AND improvement patch [2]. 3. Remove unused patches. [1] https://lore.kernel.org/bpf/20240711111908.3817636-1-xukuohai@huaweicloud.com https://lore.kernel.org/bpf/20240711113828.3818398-1-xukuohai@huaweicloud.com [2] https://lore.kernel.org/bpf/ykuhustu7vt2ilwhl32kj655xfdgdlm2xkl5rff6tw2ycksovp@ss2n4gpjysnw [3] https://lore.kernel.org/bpf/20240719081702.137173-1-shung-hsi.yu@suse.com/ Shung-Hsi Yu (1): bpf, verifier: improve signed ranges inference for BPF_AND ==================== Link: https://lore.kernel.org/r/20240719110059.797546-1-xukuohai@huaweicloud.com Signed-off-by: Alexei Starovoitov <ast@kernel.org> Signed-off-by: Andrii Nakryiko <andrii@kernel.org> |
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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.