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commit9c1292eca2upstream. It was reported that there is a compiler warning on the unused variable "sin_addr_len" in af_inet.c when CONFIG_CGROUP_BPF is not set. This patch is to address it similar to the ipv6 counterpart in inet6_getname(). It is to "return sin_addr_len;" instead of "return sizeof(*sin);". Fixes:fefba7d1ae("bpf: Propagate modified uaddrlen from cgroup sockaddr programs") Reported-by: Stephen Rothwell <sfr@canb.auug.org.au> Signed-off-by: Martin KaFai Lau <martin.lau@kernel.org> Signed-off-by: Andrii Nakryiko <andrii@kernel.org> Reviewed-by: Kuniyuki Iwashima <kuniyu@amazon.com> Link: https://lore.kernel.org/bpf/20231013185702.3993710-1-martin.lau@linux.dev Closes: https://lore.kernel.org/bpf/20231013114007.2fb09691@canb.auug.org.au/ Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>