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Message-ID: <202509071540.GTxwwstz-lkp@intel.com>
Date: Sun, 7 Sep 2025 15:17:16 +0800
From: kernel test robot <lkp@...el.com>
To: Fidal Palamparambil <rootuserhere@...il.com>,
	linux-modules@...r.kernel.org
Cc: oe-kbuild-all@...ts.linux.dev, mcgrof@...nel.org, petr.pavlu@...e.com,
	da.gomez@...nel.org, samitolvanen@...gle.com,
	linux-kernel@...r.kernel.org,
	Fidal palamparambil <rootuserhere@...il.com>
Subject: Re: [PATCH] tracing: Fix multiple issues in trace_printk module
 handling

Hi Fidal,

kernel test robot noticed the following build warnings:

[auto build test WARNING on trace/for-next]
[also build test WARNING on linus/master v6.17-rc4 next-20250905]
[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/Fidal-Palamparambil/tracing-Fix-multiple-issues-in-trace_printk-module-handling/20250906-214415
base:   https://git.kernel.org/pub/scm/linux/kernel/git/trace/linux-trace for-next
patch link:    https://lore.kernel.org/r/20250906134148.55-1-rootuserhere%40gmail.com
patch subject: [PATCH] tracing: Fix multiple issues in trace_printk module handling
config: powerpc-randconfig-r131-20250907 (https://download.01.org/0day-ci/archive/20250907/202509071540.GTxwwstz-lkp@intel.com/config)
compiler: powerpc-linux-gcc (GCC) 13.4.0
reproduce: (https://download.01.org/0day-ci/archive/20250907/202509071540.GTxwwstz-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/202509071540.GTxwwstz-lkp@intel.com/

sparse warnings: (new ones prefixed by >>)
>> kernel/trace/trace_printk.c:388:16: sparse: sparse: incorrect type in assignment (different base types) @@     expected struct dentry *dentry @@     got int @@
   kernel/trace/trace_printk.c:388:16: sparse:     expected struct dentry *dentry
   kernel/trace/trace_printk.c:388:16: sparse:     got int

vim +388 kernel/trace/trace_printk.c

   383	
   384	static __init int init_trace_printk_function_export(void)
   385	{
   386		struct dentry *dentry;
   387	
 > 388		dentry = tracing_init_dentry();
   389		if (IS_ERR(dentry))
   390			return 0;
   391	
   392		trace_create_file("printk_formats", TRACE_MODE_READ, NULL,
   393					    NULL, &ftrace_formats_fops);
   394	
   395		return 0;
   396	}
   397	

-- 
0-DAY CI Kernel Test Service
https://github.com/intel/lkp-tests/wiki

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