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Commitb599015f04("samples/bpf: Fix application of sizeof to pointer") tried to fix a bug where sizeof was incorrectly applied to a pointer instead of the array string was being copied to, to find the destination buffer size, but ended up using strlen, which is still incorrect. However, on closer look ifname_buf has no other use, hence directly use optarg. Fixes:b599015f04("samples/bpf: Fix application of sizeof to pointer") Fixes:e531a220cc("samples: bpf: Convert xdp_redirect_cpu to XDP samples helper") Signed-off-by: Kumar Kartikeya Dwivedi <memxor@gmail.com> Signed-off-by: Daniel Borkmann <daniel@iogearbox.net> Reviewed-by: Alexander Lobakin <alexandr.lobakin@intel.com> Tested-by: Alexander Lobakin <alexandr.lobakin@intel.com> Link: https://lore.kernel.org/bpf/20211112020301.528357-1-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 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.