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[ Upstream commit 8776618dbbd1b6f210b31509507e1aad461d6435 ] In rxe_send() a ref is taken on the qp to keep it alive until the kfree_skb() has a chance to call the skb destructor rxe_skb_tx_dtor() which drops the reference. If the packet has an incorrect protocol the error path just calls kfree_skb() which will call the destructor which will drop the ref. Currently the driver also calls rxe_put() which is incorrect. Additionally since the packets sent to rxe_send() are under the control of the driver and it only ever produces IPV4 or IPV6 packets the simplest fix is to remove all the code in this block. Link: https://lore.kernel.org/r/20240329145513.35381-12-rpearsonhpe@gmail.com Signed-off-by: Bob Pearson <rpearsonhpe@gmail.com> Fixes: 9eb7f8e44d13 ("IB/rxe: Move refcounting earlier in rxe_send()") Signed-off-by: Jason Gunthorpe <jgg@nvidia.com> Signed-off-by: Sasha Levin <sashal@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.