net/smc: Fix af_ops of child socket pointing to released memory
Child sockets may inherit the af_ops from the parent listen socket. When the listen socket is released then the af_ops of the child socket points to released memory. Solve that by restoring the original af_ops for child sockets which inherited the parent af_ops. And clear any inherited user_data of the parent socket. Fixes: 8270d9c2 ("net/smc: Limit backlog connections") Reviewed-by: Wenjia Zhang <wenjia@linux.ibm.com> Signed-off-by: Karsten Graul <kgraul@linux.ibm.com> Reviewed-by: D. Wythe <alibuda@linux.alibaba.com> Signed-off-by: Jakub Kicinski <kuba@kernel.org>
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