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Kumar Kartikeya Dwivedi says: ==================== Fixes for stack with allow_ptr_leaks Two fixes for usability/correctness gaps when interacting with the stack without CAP_PERFMON (i.e. with allow_ptr_leaks = false). See the commits for details. I've verified that the tests fail when run without the fixes. Changelog: ---------- v3 -> v4 v3: https://lore.kernel.org/bpf/20241202083814.1888784-1-memxor@gmail.com * Address Andrii's comments * Fix bug paperered over by missing CAP_NET_ADMIN in verifier_mtu test * Add warning when undefined CAP_ constant is specified, and fail test * Reorder annotations to be more clear * Verify that fixes fail without patches again * Add Acked-by from Andrii v2 -> v3 v2: https://lore.kernel.org/bpf/20241127212026.3580542-1-memxor@gmail.com * Address comments from Eduard * Fix comment for mark_stack_slot_misc * We can simply always return early when stype == STACK_INVALID * Drop allow_ptr_leaks conditionals * Add Eduard's __caps_unpriv patch into the series * Convert test_verifier_mtu to use it * Move existing tests to __caps_unpriv annotation and verifier_spill_fill.c * Add Acked-by from Eduard v1 -> v2 v1: https://lore.kernel.org/bpf/20241127185135.2753982-1-memxor@gmail.com * Fix CI errors in selftest by removing dependence on BPF_ST ==================== Link: https://patch.msgid.link/20241204044757.1483141-1-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 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.