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Message-ID: <202509171240.sw10iAf6-lkp@intel.com>
Date: Wed, 17 Sep 2025 13:04:11 +0800
From: kernel test robot <lkp@...el.com>
To: Ethan Graham <ethan.w.s.graham@...il.com>, ethangraham@...gle.com,
glider@...gle.com
Cc: llvm@...ts.linux.dev, oe-kbuild-all@...ts.linux.dev,
andreyknvl@...il.com, andy@...nel.org, brauner@...nel.org,
brendan.higgins@...ux.dev, davem@...emloft.net, davidgow@...gle.com,
dhowells@...hat.com, dvyukov@...gle.com, elver@...gle.com,
herbert@...dor.apana.org.au, ignat@...udflare.com, jack@...e.cz,
jannh@...gle.com, johannes@...solutions.net,
kasan-dev@...glegroups.com, kees@...nel.org,
kunit-dev@...glegroups.com, linux-crypto@...r.kernel.org,
linux-kernel@...r.kernel.org, linux-mm@...ck.org, lukas@...ner.de,
rmoar@...gle.com, shuah@...nel.org, tarasmadan@...gle.com
Subject: Re: [PATCH v1 09/10] fs/binfmt_script: add KFuzzTest target for
load_script
Hi Ethan,
kernel test robot noticed the following build warnings:
[auto build test WARNING on akpm-mm/mm-nonmm-unstable]
[also build test WARNING on herbert-cryptodev-2.6/master herbert-crypto-2.6/master linus/master v6.17-rc6 next-20250916]
[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/Ethan-Graham/mm-kasan-implement-kasan_poison_range/20250916-210448
base: https://git.kernel.org/pub/scm/linux/kernel/git/akpm/mm.git mm-nonmm-unstable
patch link: https://lore.kernel.org/r/20250916090109.91132-10-ethan.w.s.graham%40gmail.com
patch subject: [PATCH v1 09/10] fs/binfmt_script: add KFuzzTest target for load_script
config: i386-randconfig-013-20250917 (https://download.01.org/0day-ci/archive/20250917/202509171240.sw10iAf6-lkp@intel.com/config)
compiler: clang version 20.1.8 (https://github.com/llvm/llvm-project 87f0227cb60147a26a1eeb4fb06e3b505e9c7261)
reproduce (this is a W=1 build): (https://download.01.org/0day-ci/archive/20250917/202509171240.sw10iAf6-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@...el.com>
| Closes: https://lore.kernel.org/oe-kbuild-all/202509171240.sw10iAf6-lkp@intel.com/
All warnings (new ones prefixed by >>):
In file included from fs/binfmt_script.c:166:
In file included from fs/tests/binfmt_script_kfuzz.c:8:
>> include/linux/kfuzztest.h:135:3: warning: format specifies type 'unsigned long' but the argument has type 'int' [-Wformat]
134 | pr_info("reloc_table: { num_entries = %u, padding = %u } @ offset 0x%lx", rt->num_entries, rt->padding_size,
| ~~~
| %x
135 | (char *)rt - (char *)regions);
| ^~~~~~~~~~~~~~~~~~~~~~~~~~~~
include/linux/printk.h:585:34: note: expanded from macro 'pr_info'
585 | printk(KERN_INFO pr_fmt(fmt), ##__VA_ARGS__)
| ~~~ ^~~~~~~~~~~
include/linux/printk.h:512:60: note: expanded from macro 'printk'
512 | #define printk(fmt, ...) printk_index_wrap(_printk, fmt, ##__VA_ARGS__)
| ~~~ ^~~~~~~~~~~
include/linux/printk.h:484:19: note: expanded from macro 'printk_index_wrap'
484 | _p_func(_fmt, ##__VA_ARGS__); \
| ~~~~ ^~~~~~~~~~~
In file included from fs/binfmt_script.c:166:
In file included from fs/tests/binfmt_script_kfuzz.c:8:
include/linux/kfuzztest.h:141:37: warning: format specifies type 'unsigned long' but the argument has type 'int' [-Wformat]
141 | pr_info("payload: [0x%lx, 0x%lx)", (char *)payload_start - (char *)regions,
| ~~~ ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
| %x
include/linux/printk.h:585:34: note: expanded from macro 'pr_info'
585 | printk(KERN_INFO pr_fmt(fmt), ##__VA_ARGS__)
| ~~~ ^~~~~~~~~~~
include/linux/printk.h:512:60: note: expanded from macro 'printk'
512 | #define printk(fmt, ...) printk_index_wrap(_printk, fmt, ##__VA_ARGS__)
| ~~~ ^~~~~~~~~~~
include/linux/printk.h:484:19: note: expanded from macro 'printk_index_wrap'
484 | _p_func(_fmt, ##__VA_ARGS__); \
| ~~~~ ^~~~~~~~~~~
In file included from fs/binfmt_script.c:166:
In file included from fs/tests/binfmt_script_kfuzz.c:8:
include/linux/kfuzztest.h:142:3: warning: format specifies type 'unsigned long' but the argument has type 'int' [-Wformat]
141 | pr_info("payload: [0x%lx, 0x%lx)", (char *)payload_start - (char *)regions,
| ~~~
| %x
142 | (char *)payload_end - (char *)regions);
| ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
include/linux/printk.h:585:34: note: expanded from macro 'pr_info'
585 | printk(KERN_INFO pr_fmt(fmt), ##__VA_ARGS__)
| ~~~ ^~~~~~~~~~~
include/linux/printk.h:512:60: note: expanded from macro 'printk'
512 | #define printk(fmt, ...) printk_index_wrap(_printk, fmt, ##__VA_ARGS__)
| ~~~ ^~~~~~~~~~~
include/linux/printk.h:484:19: note: expanded from macro 'printk_index_wrap'
484 | _p_func(_fmt, ##__VA_ARGS__); \
| ~~~~ ^~~~~~~~~~~
3 warnings generated.
vim +135 include/linux/kfuzztest.h
6f8f11abdf5c57 Ethan Graham 2025-09-16 117
6f8f11abdf5c57 Ethan Graham 2025-09-16 118 /*
6f8f11abdf5c57 Ethan Graham 2025-09-16 119 * Dump some information on the parsed headers and payload. Can be useful for
6f8f11abdf5c57 Ethan Graham 2025-09-16 120 * debugging inputs when writing an encoder for the KFuzzTest input format.
6f8f11abdf5c57 Ethan Graham 2025-09-16 121 */
6f8f11abdf5c57 Ethan Graham 2025-09-16 122 __attribute__((unused)) static inline void kfuzztest_debug_header(struct reloc_region_array *regions,
6f8f11abdf5c57 Ethan Graham 2025-09-16 123 struct reloc_table *rt, void *payload_start,
6f8f11abdf5c57 Ethan Graham 2025-09-16 124 void *payload_end)
6f8f11abdf5c57 Ethan Graham 2025-09-16 125 {
6f8f11abdf5c57 Ethan Graham 2025-09-16 126 uint32_t i;
6f8f11abdf5c57 Ethan Graham 2025-09-16 127
6f8f11abdf5c57 Ethan Graham 2025-09-16 128 pr_info("regions: { num_regions = %u } @ %px", regions->num_regions, regions);
6f8f11abdf5c57 Ethan Graham 2025-09-16 129 for (i = 0; i < regions->num_regions; i++) {
6f8f11abdf5c57 Ethan Graham 2025-09-16 130 pr_info(" region_%u: { start: 0x%x, size: 0x%x }", i, regions->regions[i].offset,
6f8f11abdf5c57 Ethan Graham 2025-09-16 131 regions->regions[i].size);
6f8f11abdf5c57 Ethan Graham 2025-09-16 132 }
6f8f11abdf5c57 Ethan Graham 2025-09-16 133
6f8f11abdf5c57 Ethan Graham 2025-09-16 134 pr_info("reloc_table: { num_entries = %u, padding = %u } @ offset 0x%lx", rt->num_entries, rt->padding_size,
6f8f11abdf5c57 Ethan Graham 2025-09-16 @135 (char *)rt - (char *)regions);
6f8f11abdf5c57 Ethan Graham 2025-09-16 136 for (i = 0; i < rt->num_entries; i++) {
6f8f11abdf5c57 Ethan Graham 2025-09-16 137 pr_info(" reloc_%u: { src: %u, offset: 0x%x, dst: %u }", i, rt->entries[i].region_id,
6f8f11abdf5c57 Ethan Graham 2025-09-16 138 rt->entries[i].region_offset, rt->entries[i].value);
6f8f11abdf5c57 Ethan Graham 2025-09-16 139 }
6f8f11abdf5c57 Ethan Graham 2025-09-16 140
6f8f11abdf5c57 Ethan Graham 2025-09-16 141 pr_info("payload: [0x%lx, 0x%lx)", (char *)payload_start - (char *)regions,
6f8f11abdf5c57 Ethan Graham 2025-09-16 142 (char *)payload_end - (char *)regions);
6f8f11abdf5c57 Ethan Graham 2025-09-16 143 }
6f8f11abdf5c57 Ethan Graham 2025-09-16 144
--
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https://github.com/intel/lkp-tests/wiki
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