From: kernel test robot <lkp@intel.com>
To: Jarkko Sakkinen <jarkko@kernel.org>,
keyrings@vger.kernel.org,
Brendan Higgins <brendan.higgins@linux.dev>,
David Gow <david@davidgow.net>
Cc: oe-kbuild-all@lists.linux.dev,
Jarkko Sakkinen <jarkko@kernel.org>,
Andrew Morton <akpm@linux-foundation.org>,
Linux Memory Management List <linux-mm@kvack.org>,
Rae Moar <raemoar63@gmail.com>,
Ryota Sakamoto <sakamo.ryota@gmail.com>,
Kuan-Wei Chiu <visitorckw@gmail.com>,
Andy Shevchenko <andriy.shevchenko@linux.intel.com>,
Pasha Tatashin <pasha.tatashin@soleen.com>,
Kir Chou <note351@hotmail.com>, Petr Mladek <pmladek@suse.com>,
Dmitry Antipov <dmantipov@yandex.ru>,
Guan-Chun Wu <409411716@gms.tku.edu.tw>,
linux-kernel@vger.kernel.org,
"(open list:KERNEL UNIT TESTING FRAMEWORK \\(KUnit\\))"
<linux-kselftest@vger.kernel.org>
Subject: Re: [PATCH] lib/tests: kunit for associative array
Date: Fri, 16 Oct 2026 13:36:22 +0800 [thread overview]
Message-ID: <202610161338.iIHVeJyP-lkp@intel.com> (raw)
In-Reply-To: <20261014160144.1835860-1-jarkko@kernel.org>
Hi Jarkko,
kernel test robot noticed the following build warnings:
[auto build test WARNING on akpm-mm/mm-nonmm-unstable]
[also build test WARNING on linus/master v7.3-rc7]
[cannot apply to next-20261012]
[If your patch is applied to the wrong git tree, kindly drop us a note.
And when submitting patch, we suggest to use '--base' as documented in
https://git-scm.com/docs/git-format-patch#_base_tree_information]
url: https://github.com/intel-lab-lkp/linux/commits/Jarkko-Sakkinen/lib-tests-kunit-for-associative-array/20261014-190138
base: https://git.kernel.org/pub/scm/linux/kernel/git/akpm/mm.git mm-nonmm-unstable
patch link: https://lore.kernel.org/r/20261014160144.1835860-1-jarkko%40kernel.org
patch subject: [PATCH] lib/tests: kunit for associative array
config: arm-randconfig-1001-20261016 (https://download.01.org/0day-ci/archive/20261016/202610161338.iIHVeJyP-lkp@intel.com/config)
compiler: arm-linux-gnueabi-gcc (GCC) 8.5.0
reproduce (this is a W=1 build): (https://download.01.org/0day-ci/archive/20261016/202610161338.iIHVeJyP-lkp@intel.com/reproduce)
If you fix the issue in a separate patch/commit (i.e. not just a new version of
the same patch/commit), kindly add following tags
| Reported-by: kernel test robot <lkp@intel.com>
| Closes: https://lore.kernel.org/oe-kbuild-all/202610161338.iIHVeJyP-lkp@intel.com/
All warnings (new ones prefixed by >>):
>> lib/tests/assoc_array_kunit.c:62:2: warning: conversion from 'long long unsigned int' to 'long unsigned int' changes value from '16045690984503098046' to '3405691582' [-Woverflow]
0xdeadbeefcafebabeUL, 0x0000000000000010UL,
^~~~~~~~~~~~~~~~~~~~
lib/tests/assoc_array_kunit.c:63:2: warning: conversion from 'long long unsigned int' to 'long unsigned int' changes value from '16045690984503098046' to '3405691582' [-Woverflow]
0xdeadbeefcafebabeUL, 0x0000000000000020UL,
^~~~~~~~~~~~~~~~~~~~
lib/tests/assoc_array_kunit.c:64:2: warning: conversion from 'long long unsigned int' to 'long unsigned int' changes value from '16045690984503098046' to '3405691582' [-Woverflow]
0xdeadbeefcafebabeUL, 0x0000000000000030UL,
^~~~~~~~~~~~~~~~~~~~
lib/tests/assoc_array_kunit.c:65:2: warning: conversion from 'long long unsigned int' to 'long unsigned int' changes value from '16045690984503098046' to '3405691582' [-Woverflow]
0xdeadbeefcafebabeUL, 0x0000000000000040UL,
^~~~~~~~~~~~~~~~~~~~
lib/tests/assoc_array_kunit.c:66:2: warning: conversion from 'long long unsigned int' to 'long unsigned int' changes value from '16045690984503098046' to '3405691582' [-Woverflow]
0xdeadbeefcafebabeUL, 0x0000000000000050UL,
^~~~~~~~~~~~~~~~~~~~
lib/tests/assoc_array_kunit.c:67:2: warning: conversion from 'long long unsigned int' to 'long unsigned int' changes value from '16045690984503098046' to '3405691582' [-Woverflow]
0xdeadbeefcafebabeUL, 0x0000000000000060UL,
^~~~~~~~~~~~~~~~~~~~
lib/tests/assoc_array_kunit.c:68:2: warning: conversion from 'long long unsigned int' to 'long unsigned int' changes value from '16045690984503098046' to '3405691582' [-Woverflow]
0xdeadbeefcafebabeUL, 0x0000000000000070UL,
^~~~~~~~~~~~~~~~~~~~
lib/tests/assoc_array_kunit.c:69:2: warning: conversion from 'long long unsigned int' to 'long unsigned int' changes value from '16045690984503098046' to '3405691582' [-Woverflow]
0xdeadbeefcafebabeUL, 0x0000000000000080UL,
^~~~~~~~~~~~~~~~~~~~
lib/tests/assoc_array_kunit.c:70:2: warning: conversion from 'long long unsigned int' to 'long unsigned int' changes value from '16045690984503098046' to '3405691582' [-Woverflow]
0xdeadbeefcafebabeUL, 0x0000000000000090UL,
^~~~~~~~~~~~~~~~~~~~
lib/tests/assoc_array_kunit.c:71:2: warning: conversion from 'long long unsigned int' to 'long unsigned int' changes value from '16045690984503098046' to '3405691582' [-Woverflow]
0xdeadbeefcafebabeUL, 0x00000000000000a0UL,
^~~~~~~~~~~~~~~~~~~~
lib/tests/assoc_array_kunit.c:72:2: warning: conversion from 'long long unsigned int' to 'long unsigned int' changes value from '16045690984503098046' to '3405691582' [-Woverflow]
0xdeadbeefcafebabeUL, 0x00000000000000b0UL,
^~~~~~~~~~~~~~~~~~~~
lib/tests/assoc_array_kunit.c:73:2: warning: conversion from 'long long unsigned int' to 'long unsigned int' changes value from '16045690984503098046' to '3405691582' [-Woverflow]
0xdeadbeefcafebabeUL, 0x00000000000000c0UL,
^~~~~~~~~~~~~~~~~~~~
lib/tests/assoc_array_kunit.c:74:2: warning: conversion from 'long long unsigned int' to 'long unsigned int' changes value from '16045690984503098046' to '3405691582' [-Woverflow]
0xdeadbeefcafebabeUL, 0x00000000000000d0UL,
^~~~~~~~~~~~~~~~~~~~
lib/tests/assoc_array_kunit.c:75:2: warning: conversion from 'long long unsigned int' to 'long unsigned int' changes value from '16045690984503098046' to '3405691582' [-Woverflow]
0xdeadbeefcafebabeUL, 0x00000000000000e0UL,
^~~~~~~~~~~~~~~~~~~~
lib/tests/assoc_array_kunit.c:76:2: warning: conversion from 'long long unsigned int' to 'long unsigned int' changes value from '16045690984503098046' to '3405691582' [-Woverflow]
0xdeadbeefcafebabeUL, 0x00000000000000f0UL,
^~~~~~~~~~~~~~~~~~~~
lib/tests/assoc_array_kunit.c:77:2: warning: conversion from 'long long unsigned int' to 'long unsigned int' changes value from '16045690984503098046' to '3405691582' [-Woverflow]
0xdeadbeefcafebabeUL, 0x0000000000000100UL,
^~~~~~~~~~~~~~~~~~~~
lib/tests/assoc_array_kunit.c:78:2: warning: conversion from 'long long unsigned int' to 'long unsigned int' changes value from '16045690984503098046' to '3405691582' [-Woverflow]
0xdeadbeefcafebabeUL, 0x0000000000000110UL,
^~~~~~~~~~~~~~~~~~~~
lib/tests/assoc_array_kunit.c:79:2: warning: conversion from 'long long unsigned int' to 'long unsigned int' changes value from '16045690984503098046' to '3405691582' [-Woverflow]
0xdeadbeefcafebabeUL, 0x0000000000000001UL,
^~~~~~~~~~~~~~~~~~~~
vim +62 lib/tests/assoc_array_kunit.c
19
20 /*
21 * As a quick remainder, these are the basic building blocks of an associative
22 * array:
23 *
24 * - struct assoc_array_node: a tree node representing a nibble of the search
25 * key.
26 * - struct assoc_array_shortcut: a tree node representing a sequence of nibbles
27 * shared by multiple search keys with no divergence among them.
28 *
29 * The keys in array will be created in order in tests, and is a constructed in
30 * a way that splits reach the level 8:
31 *
32 * - 0..16: Share prefix 0x21 at levels 0 and 4.
33 * - 17: Splits root shortcut at level 4.
34 * - 18..34: Share chunk 0.
35 * - 35: Splits shortcut at chunk boundary.
36 * - 36..46: Share prefix 0xbeef at levels 0..12.
37 * - 47: Splits shortcut at level 8.
38 * - 48..63: Distinct leaves at level 0.
39 *
40 * The numbers were picked partly based on trial and error, and partly trying to
41 * find smallest possible numbers reaching the level 8.
42 */
43 static const unsigned long assoc_array_test_keys[ASSOC_ARRAY_TEST_NR_KEYS * 2] = {
44 0x0000000000000121UL, 0x0000000000000000UL,
45 0x0000000000000221UL, 0x0000000000000000UL,
46 0x0000000000000321UL, 0x0000000000000000UL,
47 0x0000000000000421UL, 0x0000000000000000UL,
48 0x0000000000000521UL, 0x0000000000000000UL,
49 0x0000000000000621UL, 0x0000000000000000UL,
50 0x0000000000000721UL, 0x0000000000000000UL,
51 0x0000000000000821UL, 0x0000000000000000UL,
52 0x0000000000000921UL, 0x0000000000000000UL,
53 0x0000000000000a21UL, 0x0000000000000000UL,
54 0x0000000000000b21UL, 0x0000000000000000UL,
55 0x0000000000000c21UL, 0x0000000000000000UL,
56 0x0000000000000d21UL, 0x0000000000000000UL,
57 0x0000000000000e21UL, 0x0000000000000000UL,
58 0x0000000000000f21UL, 0x0000000000000000UL,
59 0x0000000000001021UL, 0x0000000000000000UL,
60 0x0000000000001121UL, 0x0000000000000000UL,
61 0x0000000000000001UL, 0x0000000000000000UL,
> 62 0xdeadbeefcafebabeUL, 0x0000000000000010UL,
63 0xdeadbeefcafebabeUL, 0x0000000000000020UL,
64 0xdeadbeefcafebabeUL, 0x0000000000000030UL,
65 0xdeadbeefcafebabeUL, 0x0000000000000040UL,
66 0xdeadbeefcafebabeUL, 0x0000000000000050UL,
67 0xdeadbeefcafebabeUL, 0x0000000000000060UL,
68 0xdeadbeefcafebabeUL, 0x0000000000000070UL,
69 0xdeadbeefcafebabeUL, 0x0000000000000080UL,
70 0xdeadbeefcafebabeUL, 0x0000000000000090UL,
71 0xdeadbeefcafebabeUL, 0x00000000000000a0UL,
72 0xdeadbeefcafebabeUL, 0x00000000000000b0UL,
73 0xdeadbeefcafebabeUL, 0x00000000000000c0UL,
74 0xdeadbeefcafebabeUL, 0x00000000000000d0UL,
75 0xdeadbeefcafebabeUL, 0x00000000000000e0UL,
76 0xdeadbeefcafebabeUL, 0x00000000000000f0UL,
77 0xdeadbeefcafebabeUL, 0x0000000000000100UL,
78 0xdeadbeefcafebabeUL, 0x0000000000000110UL,
79 0xdeadbeefcafebabeUL, 0x0000000000000001UL,
80 0x000000000001beefUL, 0x0000000000000000UL,
81 0x000000000002beefUL, 0x0000000000000000UL,
82 0x000000000003beefUL, 0x0000000000000000UL,
83 0x000000000004beefUL, 0x0000000000000000UL,
84 0x000000000005beefUL, 0x0000000000000000UL,
85 0x000000000006beefUL, 0x0000000000000000UL,
86 0x000000000007beefUL, 0x0000000000000000UL,
87 0x000000000008beefUL, 0x0000000000000000UL,
88 0x000000000009beefUL, 0x0000000000000000UL,
89 0x00000000000abeefUL, 0x0000000000000000UL,
90 0x00000000000bbeefUL, 0x0000000000000000UL,
91 0x00000000000000efUL, 0x0000000000000000UL,
92 0x0000000000001000UL, 0x0000000000000000UL,
93 0x0000000000001001UL, 0x0000000000000000UL,
94 0x0000000000001002UL, 0x0000000000000000UL,
95 0x0000000000001003UL, 0x0000000000000000UL,
96 0x0000000000001004UL, 0x0000000000000000UL,
97 0x0000000000001005UL, 0x0000000000000000UL,
98 0x0000000000001006UL, 0x0000000000000000UL,
99 0x0000000000001007UL, 0x0000000000000000UL,
100 0x0000000000001008UL, 0x0000000000000000UL,
101 0x0000000000001009UL, 0x0000000000000000UL,
102 0x000000000000100aUL, 0x0000000000000000UL,
103 0x000000000000100bUL, 0x0000000000000000UL,
104 0x000000000000100cUL, 0x0000000000000000UL,
105 0x000000000000100dUL, 0x0000000000000000UL,
106 0x000000000000100eUL, 0x0000000000000000UL,
107 0x000000000000100fUL, 0x0000000000000000UL,
108 };
109
--
0-DAY CI Kernel Test Service
https://github.com/intel/lkp-tests/wiki
next prev parent reply other threads:[~2026-10-16 5:37 UTC|newest]
Thread overview: 10+ messages / expand[flat|nested] mbox.gz Atom feed top
2026-10-14 16:01 [PATCH] lib/tests: kunit for associative array Jarkko Sakkinen
2026-10-14 16:35 ` Eric Biggers
2026-10-14 16:56 ` Jarkko Sakkinen
2026-10-14 17:03 ` Jarkko Sakkinen
2026-10-14 17:32 ` Jarkko Sakkinen
2026-10-14 17:01 ` Linus Torvalds
2026-10-16 5:36 ` kernel test robot [this message]
2026-10-16 13:21 ` kernel test robot
2026-10-18 1:11 ` Ben Boeckel
2026-10-18 2:19 ` Jarkko Sakkinen
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