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5449a5ca9b
When sysctl performs restrict writes, it allows to write from a middle position of a sysctl file, which requires us to initialize the table data before calling proc_dostring() for the write case. Fixes: 3d1bec99320d ("ipv6: introduce secret_stable to ipv6_devconf") Reported-by: Sasha Levin <sasha.levin@oracle.com> Acked-by: Hannes Frederic Sowa <hannes@stressinduktion.org> Tested-by: Sasha Levin <sasha.levin@oracle.com> Signed-off-by: Cong Wang <xiyou.wangcong@gmail.com> Signed-off-by: David S. Miller <davem@davemloft.net>