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b62bf8a5e9
Since exception callbacks are not referenced using bpf_pseudo_func and bpf_pseudo_call instructions, check_cfg traversal will never explore instructions of the exception callback. Even after adding the subprog, the program will then fail with a 'unreachable insn' error. We thus need to begin walking from the start of the exception callback again in check_cfg after a complete CFG traversal finishes, so as to explore the CFG rooted at the exception callback. Signed-off-by: Kumar Kartikeya Dwivedi <memxor@gmail.com> Link: https://lore.kernel.org/r/20230912233214.1518551-8-memxor@gmail.com Signed-off-by: Alexei Starovoitov <ast@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.