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commita9384a4c1dupstream. Whenever RCU protected list replaces an object, the pointer to the new object needs to be updated _before_ the call to kfree_rcu() or call_rcu() Also ip6_mc_msfilter() needs to update the pointer before releasing the mc_lock mutex. Note that linux-5.13 was supporting kfree_rcu(NULL, rcu), so this fix does not need the conditional test I was forced to use in the equivalent patch for IPv4. Fixes:882ba1f73c("mld: convert ipv6_mc_socklist->sflist to RCU") Signed-off-by: Eric Dumazet <edumazet@google.com> Cc: Taehee Yoo <ap420073@gmail.com> Signed-off-by: David S. Miller <davem@davemloft.net> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.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.