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522574fd78
Andrii noticed that sincef97b8b9bd6("bpftool: Fix a bug in subskeleton code generation") the subskeleton code allows bpf_object__destroy_subskeleton to overwrite the errno that subskeleton__open would return with. While this is not currently an issue, let's make it future-proof. This patch explicitly tracks err in subskeleton__open and skeleton__create (i.e. calloc failure is explicitly ENOMEM) and ensures that errno is -err on the error return path. The skeleton code had to be changed since maps and progs codegen is shared with subskeletons. Fixes:f97b8b9bd6("bpftool: Fix a bug in subskeleton code generation") Signed-off-by: Delyan Kratunov <delyank@fb.com> Signed-off-by: Daniel Borkmann <daniel@iogearbox.net> Link: https://lore.kernel.org/bpf/3b6bfbb770c79ae64d8de26c1c1bd9d53a4b85f8.camel@fb.com
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.