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The current code assumes that a tx_skbuff entry has been cleared by stmmac_tx_clean() before stmmac_xmit()/stmmac_tso_xmit() assigns a new skb to that entry. However, since we never check the current value before overwriting it, it is theoretically possible that a non-NULL value is overwritten. Add WARN_ONs to verify that each entry in tx_skbuff is NULL before it is assigned a new value. Signed-off-by: Niklas Cassel <niklas.cassel@axis.com> Signed-off-by: David S. Miller <davem@davemloft.net>
Linux kernel ============ This file was moved to Documentation/admin-guide/README.rst Please notice that there are several guides for kernel developers and users. These guides can be rendered in a number of formats, like HTML and PDF. In order to build the documentation, use ``make htmldocs`` or ``make pdfdocs``. There are various text files in the Documentation/ subdirectory, several of them using the Restructured Text markup notation. See Documentation/00-INDEX for a list of what is contained in each file. 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.