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Hou Tao says: ==================== The patch set fixes several issues in bits iterator. Patch #1 fixes the kmemleak problem of bits iterator. Patch #2~#3 fix the overflow problem of nr_bits. Patch #4 fixes the potential stack corruption when bits iterator is used on 32-bit host. Patch #5 adds more test cases for bits iterator. Please see the individual patches for more details. And comments are always welcome. --- v4: * patch #1: add ack from Yafang * patch #3: revert code-churn like changes: (1) compute nr_bytes and nr_bits before the check of nr_words. (2) use nr_bits == 64 to check for single u64, preventing build warning on 32-bit hosts. * patch #4: use "BITS_PER_LONG == 32" instead of "!defined(CONFIG_64BIT)" v3: https://lore.kernel.org/bpf/20241025013233.804027-1-houtao@huaweicloud.com/T/#t * split the bits-iterator related patches from "Misc fixes for bpf" patch set * patch #1: use "!nr_bits || bits >= nr_bits" to stop the iteration * patch #2: add a new helper for the overflow problem * patch #3: decrease the limitation from 512 to 511 and check whether nr_bytes is too large for bpf memory allocator explicitly * patch #5: add two more test cases for bit iterator v2: http://lore.kernel.org/bpf/d49fa2f4-f743-c763-7579-c3cab4dd88cb@huaweicloud.com ==================== Link: https://lore.kernel.org/r/20241030100516.3633640-1-houtao@huaweicloud.com Signed-off-by: Alexei Starovoitov <ast@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.