From: paulmck@kernel.org
To: rcu@vger.kernel.org
Cc: linux-kernel@vger.kernel.org, kernel-team@fb.com,
mingo@kernel.org, jiangshanlai@gmail.com,
akpm@linux-foundation.org, mathieu.desnoyers@efficios.com,
josh@joshtriplett.org, tglx@linutronix.de, peterz@infradead.org,
rostedt@goodmis.org, dhowells@redhat.com, edumazet@google.com,
fweisbec@gmail.com, oleg@redhat.com, joel@joelfernandes.org,
paul.gortmaker@windriver.com, Yury Norov <yury.norov@gmail.com>,
Rasmus Villemoes <linux@rasmusvillemoes.dk>,
Andy Shevchenko <andriy.shevchenko@linux.intel.com>,
"Paul E . McKenney" <paulmck@kernel.org>
Subject: [PATCH lib/bitmap 3/9] lib: test_bitmap: add more start-end:offset/len tests
Date: Wed, 3 Mar 2021 15:56:10 -0800 [thread overview]
Message-ID: <20210303235616.22093-3-paulmck@kernel.org> (raw)
In-Reply-To: <20210303235526.GA21868@paulmck-ThinkPad-P72>
From: Paul Gortmaker <paul.gortmaker@windriver.com>
There are inputs to bitmap_parselist() that would probably never
be entered manually by a person, but might result from some kind of
automated input generator. Things like ranges of length 1, or group
lengths longer than nbits, overlaps, or offsets of zero.
Adding these tests serve two purposes:
1) document what might seem odd but nonetheless valid input.
2) don't regress from what we currently accept as valid.
Cc: Yury Norov <yury.norov@gmail.com>
Cc: Rasmus Villemoes <linux@rasmusvillemoes.dk>
Cc: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
Acked-by: Yury Norov <yury.norov@gmail.com>
Reviewed-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
Signed-off-by: Paul Gortmaker <paul.gortmaker@windriver.com>
Signed-off-by: Paul E. McKenney <paulmck@kernel.org>
---
lib/test_bitmap.c | 22 ++++++++++++++++++++++
1 file changed, 22 insertions(+)
diff --git a/lib/test_bitmap.c b/lib/test_bitmap.c
index 0f2e91d..3c1c46d 100644
--- a/lib/test_bitmap.c
+++ b/lib/test_bitmap.c
@@ -34,6 +34,8 @@ static const unsigned long exp1[] __initconst = {
BITMAP_FROM_U64(0x3333333311111111ULL),
BITMAP_FROM_U64(0xffffffff77777777ULL),
BITMAP_FROM_U64(0),
+ BITMAP_FROM_U64(0x00008000),
+ BITMAP_FROM_U64(0x80000000),
};
static const unsigned long exp2[] __initconst = {
@@ -334,6 +336,26 @@ static const struct test_bitmap_parselist parselist_tests[] __initconst = {
{0, " , ,, , , ", &exp1[12 * step], 8, 0},
{0, " , ,, , , \n", &exp1[12 * step], 8, 0},
+ {0, "0-0", &exp1[0], 32, 0},
+ {0, "1-1", &exp1[1 * step], 32, 0},
+ {0, "15-15", &exp1[13 * step], 32, 0},
+ {0, "31-31", &exp1[14 * step], 32, 0},
+
+ {0, "0-0:0/1", &exp1[12 * step], 32, 0},
+ {0, "0-0:1/1", &exp1[0], 32, 0},
+ {0, "0-0:1/31", &exp1[0], 32, 0},
+ {0, "0-0:31/31", &exp1[0], 32, 0},
+ {0, "1-1:1/1", &exp1[1 * step], 32, 0},
+ {0, "0-15:16/31", &exp1[2 * step], 32, 0},
+ {0, "15-15:1/2", &exp1[13 * step], 32, 0},
+ {0, "15-15:31/31", &exp1[13 * step], 32, 0},
+ {0, "15-31:1/31", &exp1[13 * step], 32, 0},
+ {0, "16-31:16/31", &exp1[3 * step], 32, 0},
+ {0, "31-31:31/31", &exp1[14 * step], 32, 0},
+
+ {0, "0-31:1/3,1-31:1/3,2-31:1/3", &exp1[8 * step], 32, 0},
+ {0, "1-10:8/12,8-31:24/29,0-31:0/3", &exp1[9 * step], 32, 0},
+
{-EINVAL, "-1", NULL, 8, 0},
{-EINVAL, "-0", NULL, 8, 0},
{-EINVAL, "10-1", NULL, 8, 0},
--
2.9.5
next prev parent reply other threads:[~2021-03-04 0:18 UTC|newest]
Thread overview: 10+ messages / expand[flat|nested] mbox.gz Atom feed top
2021-03-03 23:55 [PATCH tip/core/rcu 0/9] Add bitmap (thus CPU) ranges Paul E. McKenney
2021-03-03 23:56 ` [PATCH lib/bitmap 1/9] lib: test_bitmap: clearly separate ERANGE from EINVAL tests paulmck
2021-03-03 23:56 ` [PATCH lib/bitmap 2/9] lib: test_bitmap: add tests to trigger ERANGE case paulmck
2021-03-03 23:56 ` paulmck [this message]
2021-03-03 23:56 ` [PATCH lib/bitmap 4/9] lib: bitmap: fold nbits into region struct paulmck
2021-03-03 23:56 ` [PATCH lib/bitmap 5/9] lib: bitmap: move ERANGE check from set_region to check_region paulmck
2021-03-03 23:56 ` [PATCH lib/bitmap 6/9] lib: bitmap: support "N" as an alias for size of bitmap paulmck
2021-03-03 23:56 ` [PATCH lib/bitmap 7/9] lib: test_bitmap: add tests for "N" alias paulmck
2021-03-03 23:56 ` [PATCH lib/bitmap 8/9] rcu: deprecate "all" option to rcu_nocbs= paulmck
2021-03-03 23:56 ` [PATCH lib/bitmap 9/9] rcutorture: Use "all" and "N" in "nohz_full" and "rcu_nocbs" paulmck
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