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Date:   Mon, 9 Oct 2023 20:36:16 +0800
From:   kernel test robot <lkp@intel.com>
To:     Sandipan Das <sandipan.das@amd.com>, linux-kernel@vger.kernel.org,
        linux-perf-users@vger.kernel.org, x86@kernel.org
Cc:     oe-kbuild-all@lists.linux.dev, peterz@infradead.org,
        mingo@redhat.com, acme@kernel.org, mark.rutland@arm.com,
        alexander.shishkin@linux.intel.com, jolsa@kernel.org,
        namhyung@kernel.org, irogers@google.com, adrian.hunter@intel.com,
        tglx@linutronix.de, bp@alien8.de, dave.hansen@linux.intel.com,
        hpa@zytor.com, eranian@google.com, ananth.narayan@amd.com,
        ravi.bangoria@amd.com, santosh.shukla@amd.com, sandipan.das@amd.com
Subject: Re: [PATCH v2 2/6] perf/x86/amd/uncore: Move discovery and
 registration
Message-ID: <202310092019.yMh3nlyD-lkp@intel.com>
References: <e6c447e48872fcab8452e0dd81b1c9cb09f39eb4.1696425185.git.sandipan.das@amd.com>
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In-Reply-To: <e6c447e48872fcab8452e0dd81b1c9cb09f39eb4.1696425185.git.sandipan.das@amd.com>
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Hi Sandipan,

kernel test robot noticed the following build warnings:

[auto build test WARNING on tip/perf/core]
[also build test WARNING on perf-tools/perf-tools acme/perf/core linus/master v6.6-rc5 next-20231009]
[cannot apply to perf-tools-next/perf-tools-next]
[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/Sandipan-Das/perf-x86-amd-uncore-Move-discovery-and-registration/20231006-005053
base:   tip/perf/core
patch link:    https://lore.kernel.org/r/e6c447e48872fcab8452e0dd81b1c9cb09f39eb4.1696425185.git.sandipan.das%40amd.com
patch subject: [PATCH v2 2/6] perf/x86/amd/uncore: Move discovery and registration
config: i386-randconfig-061-20231009 (https://download.01.org/0day-ci/archive/20231009/202310092019.yMh3nlyD-lkp@intel.com/config)
compiler: gcc-11 (Debian 11.3.0-12) 11.3.0
reproduce (this is a W=1 build): (https://download.01.org/0day-ci/archive/20231009/202310092019.yMh3nlyD-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/202310092019.yMh3nlyD-lkp@intel.com/

sparse warnings: (new ones prefixed by >>)
>> arch/x86/events/amd/uncore.c:601:10: sparse: sparse: incorrect type in initializer (different address spaces) @@     expected void const [noderef] __percpu *__vpp_verify @@     got union amd_uncore_info * @@
   arch/x86/events/amd/uncore.c:601:10: sparse:     expected void const [noderef] __percpu *__vpp_verify
   arch/x86/events/amd/uncore.c:601:10: sparse:     got union amd_uncore_info *
   arch/x86/events/amd/uncore.c:730:10: sparse: sparse: incorrect type in initializer (different address spaces) @@     expected void const [noderef] __percpu *__vpp_verify @@     got union amd_uncore_info * @@
   arch/x86/events/amd/uncore.c:730:10: sparse:     expected void const [noderef] __percpu *__vpp_verify
   arch/x86/events/amd/uncore.c:730:10: sparse:     got union amd_uncore_info *
>> arch/x86/events/amd/uncore.c:847:30: sparse: sparse: incorrect type in assignment (different address spaces) @@     expected union amd_uncore_info *[noderef] info @@     got union amd_uncore_info [noderef] __percpu * @@
   arch/x86/events/amd/uncore.c:847:30: sparse:     expected union amd_uncore_info *[noderef] info
   arch/x86/events/amd/uncore.c:847:30: sparse:     got union amd_uncore_info [noderef] __percpu *
>> arch/x86/events/amd/uncore.c:881:43: sparse: sparse: incorrect type in argument 1 (different address spaces) @@     expected void [noderef] __percpu *__pdata @@     got union amd_uncore_info *[noderef] info @@
   arch/x86/events/amd/uncore.c:881:43: sparse:     expected void [noderef] __percpu *__pdata
   arch/x86/events/amd/uncore.c:881:43: sparse:     got union amd_uncore_info *[noderef] info
   arch/x86/events/amd/uncore.c:904:35: sparse: sparse: incorrect type in argument 1 (different address spaces) @@     expected void [noderef] __percpu *__pdata @@     got union amd_uncore_info *[noderef] info @@
   arch/x86/events/amd/uncore.c:904:35: sparse:     expected void [noderef] __percpu *__pdata
   arch/x86/events/amd/uncore.c:904:35: sparse:     got union amd_uncore_info *[noderef] info
   arch/x86/events/amd/uncore.c:358:39: sparse: sparse: incorrect type in initializer (different address spaces) @@     expected void const [noderef] __percpu *__vpp_verify @@     got union amd_uncore_info * @@
   arch/x86/events/amd/uncore.c:358:39: sparse:     expected void const [noderef] __percpu *__vpp_verify
   arch/x86/events/amd/uncore.c:358:39: sparse:     got union amd_uncore_info *
>> arch/x86/events/amd/uncore.c:358:39: sparse: sparse: dereference of noderef expression
   arch/x86/events/amd/uncore.c:358:39: sparse: sparse: incorrect type in initializer (different address spaces) @@     expected void const [noderef] __percpu *__vpp_verify @@     got union amd_uncore_info * @@
   arch/x86/events/amd/uncore.c:358:39: sparse:     expected void const [noderef] __percpu *__vpp_verify
   arch/x86/events/amd/uncore.c:358:39: sparse:     got union amd_uncore_info *
>> arch/x86/events/amd/uncore.c:358:39: sparse: sparse: dereference of noderef expression
   arch/x86/events/amd/uncore.c:601:10: sparse: sparse: dereference of noderef expression
>> arch/x86/events/amd/uncore.c:593:31: sparse: sparse: invalid access past the end of 'info' (4 8)
   arch/x86/events/amd/uncore.c:598:48: sparse: sparse: invalid access past the end of 'info' (4 8)
   arch/x86/events/amd/uncore.c:365:39: sparse: sparse: incorrect type in initializer (different address spaces) @@     expected void const [noderef] __percpu *__vpp_verify @@     got union amd_uncore_info * @@
   arch/x86/events/amd/uncore.c:365:39: sparse:     expected void const [noderef] __percpu *__vpp_verify
   arch/x86/events/amd/uncore.c:365:39: sparse:     got union amd_uncore_info *
   arch/x86/events/amd/uncore.c:365:39: sparse: sparse: dereference of noderef expression
   arch/x86/events/amd/uncore.c:730:10: sparse: sparse: dereference of noderef expression
   arch/x86/events/amd/uncore.c:724:31: sparse: sparse: invalid access past the end of 'info' (4 8)
   arch/x86/events/amd/uncore.c:365:39: sparse: sparse: incorrect type in initializer (different address spaces) @@     expected void const [noderef] __percpu *__vpp_verify @@     got union amd_uncore_info * @@
   arch/x86/events/amd/uncore.c:365:39: sparse:     expected void const [noderef] __percpu *__vpp_verify
   arch/x86/events/amd/uncore.c:365:39: sparse:     got union amd_uncore_info *
   arch/x86/events/amd/uncore.c:365:39: sparse: sparse: dereference of noderef expression
   arch/x86/events/amd/uncore.c:848:22: sparse: sparse: dereference of noderef expression
   arch/x86/events/amd/uncore.c:880:21: sparse: sparse: dereference of noderef expression
   arch/x86/events/amd/uncore.c:881:37: sparse: sparse: dereference of noderef expression
   arch/x86/events/amd/uncore.c:882:25: sparse: sparse: dereference of noderef expression
   arch/x86/events/amd/uncore.c:901:22: sparse: sparse: dereference of noderef expression
   arch/x86/events/amd/uncore.c:904:29: sparse: sparse: dereference of noderef expression
   arch/x86/events/amd/uncore.c:905:17: sparse: sparse: dereference of noderef expression

vim +601 arch/x86/events/amd/uncore.c

   582	
   583	static
   584	void amd_uncore_df_ctx_scan(struct amd_uncore *uncore, unsigned int cpu)
   585	{
   586		union cpuid_0x80000022_ebx ebx;
   587		union amd_uncore_info info;
   588	
   589		if (!boot_cpu_has(X86_FEATURE_PERFCTR_NB))
   590			return;
   591	
   592		info.split.aux_data = 0;
 > 593		info.split.num_pmcs = NUM_COUNTERS_NB;
   594		info.split.cid = topology_die_id(cpu);
   595	
   596		if (pmu_version >= 2) {
   597			ebx.full = cpuid_ebx(EXT_PERFMON_DEBUG_FEATURES);
   598			info.split.num_pmcs = ebx.split.num_df_pmc;
   599		}
   600	
 > 601		*per_cpu_ptr(uncore->info, cpu) = info;
   602	}
   603	

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