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John Hurley says: ==================== Track recursive calls in TC act_mirred These patches aim to prevent act_mirred causing stack overflow events from recursively calling packet xmit or receive functions. Such events can occur with poor TC configuration that causes packets to travel in loops within the system. Florian Westphal advises that a recursion crash and packets looping are separate issues and should be treated as such. David Miller futher points out that pcpu counters cannot track the precise skb context required to detect loops. Hence these patches are not aimed at detecting packet loops, rather, preventing stack flows arising from such loops. ==================== Signed-off-by: David S. Miller <davem@davemloft.net>
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.