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Fushuai WangandGreg Kroah-Hartman
3ca8e73c58
[ Upstream commit6a4bd31f68] When xsend() returns -1 (error), the check 'n < sizeof(buf)' incorrectly treats it as success due to unsigned promotion. Explicitly check for -1 first. Fixes:a4b7193d8e("selftests/bpf: Add sockmap test for redirecting partial skb data") Signed-off-by: Fushuai Wang <wangfushuai@baidu.com> Link: https://lore.kernel.org/r/20250612084208.27722-1-wangfushuai@baidu.com Signed-off-by: Alexei Starovoitov <ast@kernel.org> Signed-off-by: Sasha Levin <sashal@kernel.org>