* [bug report] selftests: Add nettest
@ 2019-08-14 14:12 Dan Carpenter
2019-08-14 14:50 ` David Ahern
0 siblings, 1 reply; 2+ messages in thread
From: Dan Carpenter @ 2019-08-14 14:12 UTC (permalink / raw)
To: dsahern; +Cc: linux-kselftest
Hello David Ahern,
The patch acda655fefae: "selftests: Add nettest" from Aug 1, 2019,
leads to the following static checker warning:
./tools/testing/selftests/net/nettest.c:1690 main()
warn: unsigned 'tmp' is never less than zero.
./tools/testing/selftests/net/nettest.c
1680 case '1':
1681 args.has_expected_raddr = 1;
1682 if (convert_addr(&args, optarg,
1683 ADDR_TYPE_EXPECTED_REMOTE))
1684 return 1;
1685
1686 break;
1687 case '2':
1688 if (str_to_uint(optarg, 0, 0x7ffffff, &tmp) != 0) {
1689 tmp = get_ifidx(optarg);
1690 if (tmp < 0) {
"tmp" is unsigned so it can't be negative. Also all the callers assume
that get_ifidx() returns negatives on error but it looks like it really
returns zero on error so it's a bit unclear to me.
1691 fprintf(stderr,
1692 "Invalid device index\n");
1693 return 1;
1694 }
1695 }
1696 args.expected_ifindex = (int)tmp;
1697 break;
1698 case 'q':
1699 quiet = 1;
regards,
dan carpenter
^ permalink raw reply [flat|nested] 2+ messages in thread
* Re: [bug report] selftests: Add nettest
2019-08-14 14:12 [bug report] selftests: Add nettest Dan Carpenter
@ 2019-08-14 14:50 ` David Ahern
0 siblings, 0 replies; 2+ messages in thread
From: David Ahern @ 2019-08-14 14:50 UTC (permalink / raw)
To: Dan Carpenter; +Cc: linux-kselftest
On 8/14/19 8:12 AM, Dan Carpenter wrote:
> "tmp" is unsigned so it can't be negative. Also all the callers assume
> that get_ifidx() returns negatives on error but it looks like it really
> returns zero on error so it's a bit unclear to me.
thanks for the report; will send a fix.
^ permalink raw reply [flat|nested] 2+ messages in thread
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2019-08-14 14:12 [bug report] selftests: Add nettest Dan Carpenter
2019-08-14 14:50 ` David Ahern
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