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[ Upstream commit584f374289] Add sock_init_data_uid() to explicitly initialize the socket uid. To initialise the socket uid, sock_init_data() assumes a the struct socket* sock is always embedded in a struct socket_alloc, used to access the corresponding inode uid. This may not be true. Examples are sockets created in tun_chr_open() and tap_open(). Fixes:86741ec254("net: core: Add a UID field to struct sock.") Signed-off-by: Pietro Borrello <borrello@diag.uniroma1.it> Reviewed-by: Eric Dumazet <edumazet@google.com> Signed-off-by: David S. Miller <davem@davemloft.net> Signed-off-by: Sasha Levin <sashal@kernel.org>