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Chuang Wang says: ==================== A potential scenario, when an error is returned after add_uprobe_event_legacy() in perf_event_uprobe_open_legacy(), or bpf_program__attach_perf_event_opts() in bpf_program__attach_uprobe_opts() returns an error, the uprobe_event that was previously created is not cleaned. At the same time, the legacy kprobe_event also have similar problems. With these patches, whenever an error is returned, it ensures that the created kprobe_event/uprobe_event is cleaned. V1 -> v3: - add detail commits - call remove_kprobe_event_legacy() on failed bpf_program__attach_perf_event_opts() v3 -> v4: - cleanup the legacy kprobe_event on failed add/attach_event ==================== Signed-off-by: Andrii Nakryiko <andrii@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.