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Message-ID: <202508151641.JHlhcDRk-lkp@intel.com>
Date: Fri, 15 Aug 2025 17:14:57 +0800
From: kernel test robot <lkp@...el.com>
To: Qinxin Xia <xiaqinxin@...wei.com>, will@...nel.org,
robin.murphy@....com, linux-kernel@...r.kernel.org
Cc: oe-kbuild-all@...ts.linux.dev, linux-arm-kernel@...ts.infradead.org,
iommu@...ts.linux.dev, xiaqinxin@...wei.com, yangyicong@...wei.com,
wangzhou1@...ilicon.com, prime.zeng@...ilicon.com,
xuwei5@...wei.com, fanghao11@...wei.com,
jonathan.cameron@...wei.com, linuxarm@...wei.com
Subject: Re: [PATCH 2/2] iommu/io-pgtable: Add ARM SMMUv3 page table dump
support
Hi Qinxin,
kernel test robot noticed the following build warnings:
[auto build test WARNING on akpm-mm/mm-everything]
[also build test WARNING on linus/master v6.17-rc1 next-20250815]
[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/Qinxin-Xia/iommu-debug-Add-IOMMU-page-table-dump-debug-facility/20250814-173720
base: https://git.kernel.org/pub/scm/linux/kernel/git/akpm/mm.git mm-everything
patch link: https://lore.kernel.org/r/20250814093005.2040511-3-xiaqinxin%40huawei.com
patch subject: [PATCH 2/2] iommu/io-pgtable: Add ARM SMMUv3 page table dump support
config: s390-allyesconfig (https://download.01.org/0day-ci/archive/20250815/202508151641.JHlhcDRk-lkp@intel.com/config)
compiler: s390-linux-gcc (GCC) 15.1.0
reproduce (this is a W=1 build): (https://download.01.org/0day-ci/archive/20250815/202508151641.JHlhcDRk-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/202508151641.JHlhcDRk-lkp@intel.com/
All warnings (new ones prefixed by >>):
In file included from include/asm-generic/bug.h:22,
from arch/s390/include/asm/bug.h:69,
from include/linux/bug.h:5,
from include/linux/mmdebug.h:5,
from arch/s390/include/asm/cmpxchg.h:11,
from arch/s390/include/asm/atomic.h:16,
from include/linux/atomic.h:7,
from drivers/iommu/io-pgtable-arm.c:12:
drivers/iommu/io-pgtable-arm.c: In function 'dump_prot':
>> include/linux/kern_levels.h:5:25: warning: format '%zu' expects argument of type 'size_t', but argument 2 has type 'int' [-Wformat=]
5 | #define KERN_SOH "\001" /* ASCII Start Of Header */
| ^~~~~~
include/linux/printk.h:486:25: note: in definition of macro 'printk_index_wrap'
486 | _p_func(_fmt, ##__VA_ARGS__); \
| ^~~~
include/linux/printk.h:557:9: note: in expansion of macro 'printk'
557 | printk(KERN_ERR pr_fmt(fmt), ##__VA_ARGS__)
| ^~~~~~
include/linux/kern_levels.h:11:25: note: in expansion of macro 'KERN_SOH'
11 | #define KERN_ERR KERN_SOH "3" /* error conditions */
| ^~~~~~~~
include/linux/printk.h:557:16: note: in expansion of macro 'KERN_ERR'
557 | printk(KERN_ERR pr_fmt(fmt), ##__VA_ARGS__)
| ^~~~~~~~
drivers/iommu/io-pgtable-arm.c:882:25: note: in expansion of macro 'pr_err'
882 | pr_err("len = %zu, attr = %s, i =%d\n", length, attr, i);
| ^~~~~~
>> include/linux/kern_levels.h:5:25: warning: format '%d' expects argument of type 'int', but argument 4 has type 'size_t' {aka 'long unsigned int'} [-Wformat=]
5 | #define KERN_SOH "\001" /* ASCII Start Of Header */
| ^~~~~~
include/linux/printk.h:486:25: note: in definition of macro 'printk_index_wrap'
486 | _p_func(_fmt, ##__VA_ARGS__); \
| ^~~~
include/linux/printk.h:557:9: note: in expansion of macro 'printk'
557 | printk(KERN_ERR pr_fmt(fmt), ##__VA_ARGS__)
| ^~~~~~
include/linux/kern_levels.h:11:25: note: in expansion of macro 'KERN_SOH'
11 | #define KERN_ERR KERN_SOH "3" /* error conditions */
| ^~~~~~~~
include/linux/printk.h:557:16: note: in expansion of macro 'KERN_ERR'
557 | printk(KERN_ERR pr_fmt(fmt), ##__VA_ARGS__)
| ^~~~~~~~
drivers/iommu/io-pgtable-arm.c:882:25: note: in expansion of macro 'pr_err'
882 | pr_err("len = %zu, attr = %s, i =%d\n", length, attr, i);
| ^~~~~~
drivers/iommu/io-pgtable-arm.c: In function 'arm_lpae_dump_iova_prot':
>> drivers/iommu/io-pgtable-arm.c:911:32: warning: format '%lx' expects argument of type 'long unsigned int', but argument 4 has type 'long long unsigned int' [-Wformat=]
911 | seq_printf(s, "%lx - %lx lvl %d stage %s ",
| ~~^
| |
| long unsigned int
| %llx
vim +911 drivers/iommu/io-pgtable-arm.c
891
892 static size_t arm_lpae_dump_iova_prot(struct seq_file *s, struct io_pgtable_ops *ops,
893 unsigned long iova)
894 {
895 struct arm_lpae_io_pgtable *data = io_pgtable_ops_to_data(ops);
896 struct iova_to_phys_data d;
897 int ret;
898
899 struct io_pgtable_walk_data walk_data = {
900 .data = &d,
901 .visit = visit_iova_to_phys,
902 .addr = iova,
903 .end = iova + 1,
904 };
905
906 /* Only the mapped iova will be output */
907 ret = __arm_lpae_iopte_walk(data, &walk_data, data->pgd, data->start_level);
908 if (ret)
909 return ARM_LPAE_GRANULE(data);
910
> 911 seq_printf(s, "%lx - %lx lvl %d stage %s ",
912 iova, iova + ARM_LPAE_BLOCK_SIZE(d.lvl, data),
913 d.lvl, io_pgtable_fmt_names[data->iop.fmt]);
914
915 /* TODO: The dump prot is incomplete and will be supplemented later... */
916 dump_prot(s, d.pte);
917 seq_puts(s, "\n");
918
919 return ARM_LPAE_BLOCK_SIZE(d.lvl, data);
920 }
921 #endif
922
--
0-DAY CI Kernel Test Service
https://github.com/intel/lkp-tests/wiki
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