Commit 0901df3a authored by Daniel Borkmann's avatar Daniel Borkmann Committed by David S. Miller
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bpf: use prefix_len in test_tag when reading fdinfo

We currently used len instead of prefix_len for the strncmp() in
fdinfo on the prog_tag. It still worked as we matched on the correct
output line also with first 8 instead of 10 chars, but lets fix it
properly to use the intended length.

Fixes: 62b64660

 ("bpf: add prog tag test case to bpf selftests")
Signed-off-by: default avatarDaniel Borkmann <>
Acked-by: default avatarAlexei Starovoitov <>
Signed-off-by: default avatarDavid S. Miller <>
parent 1541f98c
......@@ -99,7 +99,7 @@ static void tag_from_fdinfo(int fd_prog, uint8_t *tag, uint32_t len)
while (fgets(buff, sizeof(buff), fp)) {
if (strncmp(buff, "prog_tag:\t", len))
if (strncmp(buff, "prog_tag:\t", prefix_len))
ret = hex2bin(tag, buff + prefix_len, len);
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