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From: Paul Gortmaker <paul.gortmaker@windriver.com>
To: linux-kernel@vger.kernel.org
Cc: lizefan@huawei.com, mingo@kernel.org, tglx@linutronix.de,
	josh@joshtriplett.org, yury.norov@gmail.com,
	peterz@infradead.org, paulmck@kernel.org, fweisbec@gmail.com,
	linux@rasmusvillemoes.dk, andriy.shevchenko@linux.intel.com,
	Paul Gortmaker <paul.gortmaker@windriver.com>
Subject: [PATCH 1/8] lib: test_bitmap: clearly separate ERANGE from EINVAL tests.
Date: Tue, 26 Jan 2021 12:11:34 -0500	[thread overview]
Message-ID: <20210126171141.122639-2-paul.gortmaker@windriver.com> (raw)
In-Reply-To: <20210126171141.122639-1-paul.gortmaker@windriver.com>

This block of tests was meant to find/flag incorrect use of the ":"
and "/" separators (syntax errors) and invalid (zero) group len.

However they were specified with an 8 bit width and 32 bit operations,
so they really contained two errors (EINVAL and ERANGE).

Promote them to 32 bit so it is clear what they are meant to target,
and then add tests specific for ERANGE (no syntax errors, just doing
32bit op on 8 bit width, plus a typical 9-on-8 fencepost error).

Note that the remaining "10-1" on 8 is left as-is, since that captures
the fact that we check for (r->start > r->end) ---> EINVAL before we
check for (r->end >= nbits) ---> ERANGE.  If the code is ever re-ordered
then this test will pick up the mismatched errno value.

Cc: Yury Norov <yury.norov@gmail.com>
Cc: Rasmus Villemoes <linux@rasmusvillemoes.dk>
Cc: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
Signed-off-by: Paul Gortmaker <paul.gortmaker@windriver.com>
---
 lib/test_bitmap.c | 16 +++++++++-------
 1 file changed, 9 insertions(+), 7 deletions(-)

diff --git a/lib/test_bitmap.c b/lib/test_bitmap.c
index 4425a1dd4ef1..3d2cd3b1de84 100644
--- a/lib/test_bitmap.c
+++ b/lib/test_bitmap.c
@@ -337,13 +337,15 @@ static const struct test_bitmap_parselist parselist_tests[] __initconst = {
 
 	{-EINVAL, "-1",	NULL, 8, 0},
 	{-EINVAL, "-0",	NULL, 8, 0},
-	{-EINVAL, "10-1", NULL, 8, 0},
-	{-EINVAL, "0-31:", NULL, 8, 0},
-	{-EINVAL, "0-31:0", NULL, 8, 0},
-	{-EINVAL, "0-31:0/", NULL, 8, 0},
-	{-EINVAL, "0-31:0/0", NULL, 8, 0},
-	{-EINVAL, "0-31:1/0", NULL, 8, 0},
-	{-EINVAL, "0-31:10/1", NULL, 8, 0},
+	{-EINVAL, "10-1", NULL, 8, 0},	/* (start > end) ; also ERANGE */
+	{-ERANGE, "8-8", NULL, 8, 0},
+	{-ERANGE, "0-31", NULL, 8, 0},
+	{-EINVAL, "0-31:", NULL, 32, 0},
+	{-EINVAL, "0-31:0", NULL, 32, 0},
+	{-EINVAL, "0-31:0/", NULL, 32, 0},
+	{-EINVAL, "0-31:0/0", NULL, 32, 0},
+	{-EINVAL, "0-31:1/0", NULL, 32, 0},
+	{-EINVAL, "0-31:10/1", NULL, 32, 0},
 	{-EOVERFLOW, "0-98765432123456789:10/1", NULL, 8, 0},
 
 	{-EINVAL, "a-31", NULL, 8, 0},
-- 
2.17.1


  reply	other threads:[~2021-01-27  0:28 UTC|newest]

Thread overview: 34+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2021-01-26 17:11 [PATCH v3 0/8] support for bitmap (and hence CPU) list "N" abbreviation Paul Gortmaker
2021-01-26 17:11 ` Paul Gortmaker [this message]
2021-01-26 21:04   ` [PATCH 1/8] lib: test_bitmap: clearly separate ERANGE from EINVAL tests Andy Shevchenko
2021-01-27  7:21     ` Paul Gortmaker
2021-01-26 17:11 ` [PATCH 2/8] lib: test_bitmap: add more start-end:offset/len tests Paul Gortmaker
2021-01-26 21:11   ` Andy Shevchenko
2021-01-27  3:03   ` Yury Norov
2021-01-26 17:11 ` [PATCH 3/8] lib: bitmap: fold nbits into region struct Paul Gortmaker
2021-01-26 21:16   ` Andy Shevchenko
2021-01-26 21:18     ` Andy Shevchenko
2021-01-27  8:02     ` Paul Gortmaker
2021-01-28  0:47       ` Yury Norov
2021-01-28 10:17         ` Andy Shevchenko
2021-01-27  3:08   ` Yury Norov
2021-01-26 17:11 ` [PATCH 4/8] lib: bitmap: move ERANGE check from set_region to check_region Paul Gortmaker
2021-01-26 21:19   ` Andy Shevchenko
2021-01-27  3:12   ` Yury Norov
2021-01-26 17:11 ` [PATCH 5/8] lib: bitmap_getnum: separate arg into region and field Paul Gortmaker
2021-01-26 21:23   ` Andy Shevchenko
2021-01-27  2:58     ` Yury Norov
2021-01-27  8:38       ` Paul Gortmaker
2021-01-26 17:11 ` [PATCH 6/8] lib: bitmap: support "N" as an alias for size of bitmap Paul Gortmaker
2021-01-26 21:37   ` Andy Shevchenko
2021-01-26 21:41     ` Andy Shevchenko
2021-01-27 17:57       ` Yury Norov
2021-01-27  8:20     ` Paul Gortmaker
2021-01-26 17:11 ` [PATCH 7/8] lib: test_bitmap: add tests for "N" alias Paul Gortmaker
2021-01-26 17:11 ` [PATCH 8/8] rcu: deprecate "all" option to rcu_nocbs= Paul Gortmaker
2021-01-26 21:36   ` Yury Norov
2021-01-26 22:17     ` Paul E. McKenney
2021-01-26 22:27 ` [PATCH v3 0/8] support for bitmap (and hence CPU) list "N" abbreviation Yury Norov
2021-01-27  9:12   ` Paul Gortmaker
2021-02-09 22:58 [PATCH v4 " Paul Gortmaker
2021-02-09 22:59 ` [PATCH 1/8] lib: test_bitmap: clearly separate ERANGE from EINVAL tests Paul Gortmaker
2021-02-21  8:08 [PATCH v5 0/8] support for bitmap (and hence CPU) list "N" abbreviation Paul Gortmaker
2021-02-21  8:08 ` [PATCH 1/8] lib: test_bitmap: clearly separate ERANGE from EINVAL tests Paul Gortmaker

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