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Commitdcd87999d4("igmp: net: Move igmp namespace init to correct file") moved the igmp sysctls initialization from tcp_sk_init to igmp_net_init. This function is only called as part of per-namespace initialization, only if CONFIG_IP_MULTICAST is defined, otherwise igmp_mc_init() call in ip_init is compiled out, casuing the igmp pernet ops to not be registerd and those sysctl being left initialized with 0. However, there are certain functions, such as ip_mc_join_group which are always compiled and make use of some of those sysctls. Let's do a partial revert of the aforementioned commit and move the sysctl initialization into inet_init_net, that way they will always have sane values. Fixes:dcd87999d4("igmp: net: Move igmp namespace init to correct file") Link: https://bugzilla.kernel.org/show_bug.cgi?id=196595 Reported-by: Gerardo Exequiel Pozzi <vmlinuz386@gmail.com> Signed-off-by: Nikolay Borisov <nborisov@suse.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.