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5b1b5d380a
Add tests to verify that async callback's sleepable attribute is correctly determined by the callback type, not the arming program's context, reflecting its true execution context. Introduce verifier_async_cb_context.c with tests for all three async callback primitives: bpf_timer, bpf_wq, and bpf_task_work. Each primitive is tested when armed from both sleepable (lsm.s/file_open) and non-sleepable (fentry) programs. Test coverage: - bpf_timer callbacks: Verify they are never sleepable, even when armed from sleepable programs. Both tests should fail when attempting to use sleepable helper bpf_copy_from_user() in the callback. - bpf_wq callbacks: Verify they are always sleepable, even when armed from non-sleepable programs. Both tests should succeed when using sleepable helpers in the callback. - bpf_task_work callbacks: Verify they are always sleepable, even when armed from non-sleepable programs. Both tests should succeed when using sleepable helpers in the callback. Acked-by: Eduard Zingerman <eddyz87@gmail.com> Signed-off-by: Kumar Kartikeya Dwivedi <memxor@gmail.com> Link: https://lore.kernel.org/r/20251007220349.3852807-4-memxor@gmail.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.