Hello David Howells,
The patch 788380fa26a6: "X.509: Add an ASN.1 decoder" from Sep 24,
2012, leads to the following warning:
lib/asn1_decoder.c:320 asn1_ber_decoder()
warn: unsigned 'len' is never less than zero.
lib/asn1_decoder.c
315 skip_data:
316 if (!(flags & FLAG_CONS)) {
317 if (flags & FLAG_INDEFINITE_LENGTH) {
318 len = asn1_find_indefinite_length(
319 data + dp, datalen - dp, &errmsg, &dp);
320 if (len < 0)
^^^^^^^
asn1_find_indefinite_length() returns -1 on error but "len" is unsigned.
321 goto error;
322 }
323 pr_debug("- LEAF: %zu\n", len);
324 dp += len;
325 }
regards,
dan carpenter
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