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Subject: [PATCH] net: Added security socket
Date:   Tue,  4 Apr 2023 11:00:24 +0300
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Hi Alexander. I understand your concern. 
That's right kernel_connect is in kernel space,
but kernel_connect is used in RPC requests (/net/sunrpc/xprtsock.c),
and the RPC protocol is used by the NFS server.
Note kernel_sendmsg is already protected.