#include <linux/compiler.h>
#include <linux/bitmap.h>
#include "tests.h"
#include "cpumap.h"
#include "debug.h"

#define NBITS 100

static unsigned long *get_bitmap(const char *str, int nbits)
{
	struct cpu_map *map = cpu_map__new(str);
	unsigned long *bm = NULL;
	int i;

	bm = bitmap_alloc(nbits);

	if (map && bm) {
		bitmap_zero(bm, nbits);

		for (i = 0; i < map->nr; i++)
			set_bit(map->map[i], bm);
	}

	if (map)
		cpu_map__put(map);
	return bm;
}

static int test_bitmap(const char *str)
{
	unsigned long *bm = get_bitmap(str, NBITS);
	char buf[100];
	int ret;

	bitmap_scnprintf(bm, NBITS, buf, sizeof(buf));
	pr_debug("bitmap: %s\n", buf);

	ret = !strcmp(buf, str);
	free(bm);
	return ret;
}

int test__bitmap_print(int subtest __maybe_unused)
{
	TEST_ASSERT_VAL("failed to convert map", test_bitmap("1"));
	TEST_ASSERT_VAL("failed to convert map", test_bitmap("1,5"));
	TEST_ASSERT_VAL("failed to convert map", test_bitmap("1,3,5,7,9,11,13,15,17,19,21-40"));
	TEST_ASSERT_VAL("failed to convert map", test_bitmap("2-5"));
	TEST_ASSERT_VAL("failed to convert map", test_bitmap("1,3-6,8-10,24,35-37"));
	TEST_ASSERT_VAL("failed to convert map", test_bitmap("1,3-6,8-10,24,35-37"));
	TEST_ASSERT_VAL("failed to convert map", test_bitmap("1-10,12-20,22-30,32-40"));
	return 0;
}
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<tr><td class='sub'>net-next plumbings</td><td class='sub right'>Tobias Klauser</td></tr></table>
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<div class='path'>path: <a href='/cgit.cgi/linux/net-next.git/commit/?id=07cd12945551b63ecb1a349d50a6d69d1d6feb4a'>root</a>/<a href='/cgit.cgi/linux/net-next.git/commit/tools?id=07cd12945551b63ecb1a349d50a6d69d1d6feb4a'>tools</a>/<a href='/cgit.cgi/linux/net-next.git/commit/tools/testing?id=07cd12945551b63ecb1a349d50a6d69d1d6feb4a'>testing</a>/<a href='/cgit.cgi/linux/net-next.git/commit/tools/testing/selftests?id=07cd12945551b63ecb1a349d50a6d69d1d6feb4a'>selftests</a>/<a href='/cgit.cgi/linux/net-next.git/commit/tools/testing/selftests/x86?id=07cd12945551b63ecb1a349d50a6d69d1d6feb4a'>x86</a>/<a href='/cgit.cgi/linux/net-next.git/commit/tools/testing/selftests/x86/raw_syscall_helper_32.S?id=07cd12945551b63ecb1a349d50a6d69d1d6feb4a'>raw_syscall_helper_32.S</a></div><div class='content'><div class='cgit-panel'><b>diff options</b><form method='get'><input type='hidden' name='id' value='07cd12945551b63ecb1a349d50a6d69d1d6feb4a'/><table><tr><td colspan='2'/></tr><tr><td class='label'>context:</td><td class='ctrl'><select name='context' onchange='this.form.submit();'><option value='1'>1</option><option value='2'>2</option><option value='3' selected='selected'>3</option><option value='4'>4</option><option value='5'>5</option><option value='6'>6</option><option value='7'>7</option><option value='8'>8</option><option value='9'>9</option><option value='10'>10</option><option value='15'>15</option><option value='20'>20</option><option value='25'>25</option><option value='30'>30</option><option value='35'>35</option><option value='40'>40</option></select></td></tr><tr><td class='label'>space:</td><td class='ctrl'><select name='ignorews' onchange='this.form.submit();'><option value='0' selected='selected'>include</option><option value='1'>ignore</option></select></td></tr><tr><td class='label'>mode:</td><td class='ctrl'><select name='dt' onchange='this.form.submit();'><option value='0' selected='selected'>unified</option><option value='1'>ssdiff</option><option value='2'>stat only</option></select></td></tr><tr><td/><td class='ctrl'><noscript><input type='submit' value='reload'/></noscript></td></tr></table></form></div><table summary='commit info' class='commit-info'>
<tr><th>author</th><td>Tejun Heo &lt;tj@kernel.org&gt;</td><td class='right'>2017-01-26 16:47:28 -0500</td></tr>
<tr><th>committer</th><td>Tejun Heo &lt;tj@kernel.org&gt;</td><td class='right'>2017-01-26 16:47:28 -0500</td></tr>
<tr><th>commit</th><td colspan='2' class='oid'><a href='/cgit.cgi/linux/net-next.git/commit/tools/testing/selftests/x86/raw_syscall_helper_32.S?id=07cd12945551b63ecb1a349d50a6d69d1d6feb4a'>07cd12945551b63ecb1a349d50a6d69d1d6feb4a</a> (<a href='/cgit.cgi/linux/net-next.git/patch/tools/testing/selftests/x86/raw_syscall_helper_32.S?id=07cd12945551b63ecb1a349d50a6d69d1d6feb4a'>patch</a>)</td></tr>
<tr><th>tree</th><td colspan='2' class='oid'><a href='/cgit.cgi/linux/net-next.git/tree/?id=07cd12945551b63ecb1a349d50a6d69d1d6feb4a'>75f65eba7eac9277971082a2d5a4cf1370562c0c</a> /<a href='/cgit.cgi/linux/net-next.git/tree/tools/testing/selftests/x86/raw_syscall_helper_32.S?id=07cd12945551b63ecb1a349d50a6d69d1d6feb4a'>tools/testing/selftests/x86/raw_syscall_helper_32.S</a></td></tr>
<tr><th>parent</th><td colspan='2' class='oid'><a href='/cgit.cgi/linux/net-next.git/commit/tools/testing/selftests/x86/raw_syscall_helper_32.S?id=7ce7d89f48834cefece7804d38fc5d85382edf77'>7ce7d89f48834cefece7804d38fc5d85382edf77</a> (<a href='/cgit.cgi/linux/net-next.git/diff/tools/testing/selftests/x86/raw_syscall_helper_32.S?id=07cd12945551b63ecb1a349d50a6d69d1d6feb4a&amp;id2=7ce7d89f48834cefece7804d38fc5d85382edf77'>diff</a>)</td></tr></table>
<div class='commit-subject'>cgroup: don't online subsystems before cgroup_name/path() are operational</div><div class='commit-msg'>While refactoring cgroup creation, a5bca2152036 ("cgroup: factor out
cgroup_create() out of cgroup_mkdir()") incorrectly onlined subsystems
before the new cgroup is associated with it kernfs_node.  This is fine
for cgroup proper but cgroup_name/path() depend on the associated
kernfs_node and if a subsystem makes the new cgroup_subsys_state
visible, which they're allowed to after onlining, it can lead to NULL
dereference.

The current code performs cgroup creation and subsystem onlining in
cgroup_create() and cgroup_mkdir() makes the cgroup and subsystems
visible afterwards.  There's no reason to online the subsystems early
and we can simply drop cgroup_apply_control_enable() call from
cgroup_create() so that the subsystems are onlined and made visible at
the same time.

Signed-off-by: Tejun Heo &lt;tj@kernel.org&gt;
Reported-by: Konstantin Khlebnikov &lt;khlebnikov@yandex-team.ru&gt;
Fixes: a5bca2152036 ("cgroup: factor out cgroup_create() out of cgroup_mkdir()") 
Cc: stable@vger.kernel.org # v4.6+
</div><div class='diffstat-header'><a href='/cgit.cgi/linux/net-next.git/diff/?id=07cd12945551b63ecb1a349d50a6d69d1d6feb4a'>Diffstat</a> (limited to 'tools/testing/selftests/x86/raw_syscall_helper_32.S')</div><table summary='diffstat' class='diffstat'>