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17566cf0e3
Kumar Kartikeya Dwivedi says: ==================== Fix sleepable context tracking for async callbacks Currently, asynchronous execution primitives set up their callback execution simulation using push_async_cb, which will end up inheriting the sleepable or non-sleepable bit from the program triggering the simulation of the callback. This is incorrect, as the actual execution context of the asynchronous callback has nothing to do with the program arming its execution. This set fixes this oversight, and supplies a few test cases ensuring the correct behavior is tested across different types of primitives (i.e. timer, wq, task_work). While looking at this bug, it was noticed that the GFP flag setting logic for storage_get helpers is also broken, hence fix it while we are at it. PSA: These fixes and unit tests were primarily produced by prompting an AI assistant (Claude), and then modified in minor ways, in an exercise to understand how useful it can be at general kernel development tasks. Changelog: ---------- v1 -> v2 v1: https://lore.kernel.org/bpf/20251007014310.2889183-1-memxor@gmail.com * Squash fix for GFP flags into 1st commit. (Eduard) * Add a commit refactoring func_atomic to non_sleepable, make it generic, also set for kfuncs in addition to helpers. (Eduard) * Leave selftest as-is, coverage for global subprogs calling sleepable kfuncs or helpers is provided in rcu_read_lock.c. ==================== Link: https://patch.msgid.link/20251007220349.3852807-1-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.