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BPF streams are only valid for the main programs, to make it easier to access streams from subprogs, introduce main_prog_aux in struct bpf_prog_aux. prog->aux->main_prog_aux = prog->aux, for main programs and prog->aux->main_prog_aux = main_prog->aux, for subprograms. Make bpf_prog_find_from_stack() use the added main_prog_aux to return the mainprog when a subprog is found on the stack. Signed-off-by: Puranjay Mohan <puranjay@kernel.org> Acked-by: Eduard Zingerman <eddyz87@gmail.com> Link: https://lore.kernel.org/r/20250911145808.58042-3-puranjay@kernel.org 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 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.