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xfrm4_fill_dst() and xfrm6_fill_dst() build dst, getting a device reference that will likely be released by standard dst_release() code. We have to track these references or risk a warning if CONFIG_NET_DEV_REFCNT_TRACKER=y Note to XFRM maintainers : Error path in xfrm6_fill_dst() releases the reference, but does not clear xdst->u.dst.dev, so I wonder if this could lead to double dev_put() in some cases, where a dst_release() _is_ called by the callers in their error path. This extra dev_put() was added in commit84c4a9dfbf("xfrm6: release dev before returning error") Fixes:9038c32000("net: dst: add net device refcount tracking to dst_entry") Signed-off-by: Eric Dumazet <edumazet@google.com> Cc: Cong Wang <amwang@redhat.com> Acked-by: Steffen Klassert <steffen.klassert@secunet.com> Link: https://lore.kernel.org/r/20211207193203.2706158-1-eric.dumazet@gmail.com Signed-off-by: Jakub Kicinski <kuba@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.