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X-IronPort-AV: E=McAfee;i="6600,9927,10951"; a="430352717" X-IronPort-AV: E=Sophos;i="6.04,189,1695711600"; d="scan'208";a="430352717" Received: from fmsmga003.fm.intel.com ([10.253.24.29]) by fmsmga101.fm.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 12 Jan 2024 05:58:30 -0800 X-ExtLoop1: 1 X-IronPort-AV: E=McAfee;i="6600,9927,10951"; a="873369008" X-IronPort-AV: E=Sophos;i="6.04,189,1695711600"; d="scan'208";a="873369008" Received: from lkp-server02.sh.intel.com (HELO b07ab15da5fe) ([10.239.97.151]) by FMSMGA003.fm.intel.com with ESMTP; 12 Jan 2024 05:58:29 -0800 Received: from kbuild by b07ab15da5fe with local (Exim 4.96) (envelope-from ) id 1rOI3H-0009Xo-0o; Fri, 12 Jan 2024 13:58:27 +0000 Date: Fri, 12 Jan 2024 21:58:02 +0800 From: kernel test robot To: Masahiro Yamada Cc: oe-kbuild-all@lists.linux.dev, linux-kernel@vger.kernel.org Subject: kernel/context_tracking.c:126:39: sparse: sparse: incorrect type in initializer (different address spaces) Message-ID: <202401122136.5Kgy2ZR3-lkp@intel.com> Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline tree: https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git master head: 70d201a40823acba23899342d62bc2644051ad2e commit: 481461f5109919babbb393d6f68002936b8e2493 linux/export.h: make independent of CONFIG_MODULES date: 6 months ago config: csky-buildonly-randconfig-r006-20230413 (https://download.01.org/0day-ci/archive/20240112/202401122136.5Kgy2ZR3-lkp@intel.com/config) compiler: csky-linux-gcc (GCC) 12.3.0 reproduce: (https://download.01.org/0day-ci/archive/20240112/202401122136.5Kgy2ZR3-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 | Closes: https://lore.kernel.org/oe-kbuild-all/202401122136.5Kgy2ZR3-lkp@intel.com/ sparse warnings: (new ones prefixed by >>) >> kernel/context_tracking.c:126:39: sparse: sparse: incorrect type in initializer (different address spaces) @@ expected void const [noderef] __percpu *__vpp_verify @@ got struct context_tracking * @@ kernel/context_tracking.c:126:39: sparse: expected void const [noderef] __percpu *__vpp_verify kernel/context_tracking.c:126:39: sparse: got struct context_tracking * kernel/context_tracking.c:165:39: sparse: sparse: incorrect type in initializer (different address spaces) @@ expected void const [noderef] __percpu *__vpp_verify @@ got struct context_tracking * @@ kernel/context_tracking.c:165:39: sparse: expected void const [noderef] __percpu *__vpp_verify kernel/context_tracking.c:165:39: sparse: got struct context_tracking * kernel/context_tracking.c:206:39: sparse: sparse: incorrect type in initializer (different address spaces) @@ expected void const [noderef] __percpu *__vpp_verify @@ got struct context_tracking * @@ kernel/context_tracking.c:206:39: sparse: expected void const [noderef] __percpu *__vpp_verify kernel/context_tracking.c:206:39: sparse: got struct context_tracking * kernel/context_tracking.c:261:39: sparse: sparse: incorrect type in initializer (different address spaces) @@ expected void const [noderef] __percpu *__vpp_verify @@ got struct context_tracking * @@ kernel/context_tracking.c:261:39: sparse: expected void const [noderef] __percpu *__vpp_verify kernel/context_tracking.c:261:39: sparse: got struct context_tracking * kernel/context_tracking.c: note: in included file (through include/linux/mmzone.h, include/linux/topology.h, include/linux/irq.h, ...): include/linux/page-flags.h:240:46: sparse: sparse: self-comparison always evaluates to false vim +126 kernel/context_tracking.c 172114552701b8 Frederic Weisbecker 2022-06-08 115 172114552701b8 Frederic Weisbecker 2022-06-08 116 /* 172114552701b8 Frederic Weisbecker 2022-06-08 117 * Enter an RCU extended quiescent state, which can be either the 172114552701b8 Frederic Weisbecker 2022-06-08 118 * idle loop or adaptive-tickless usermode execution. 172114552701b8 Frederic Weisbecker 2022-06-08 119 * 172114552701b8 Frederic Weisbecker 2022-06-08 120 * We crowbar the ->dynticks_nmi_nesting field to zero to allow for 172114552701b8 Frederic Weisbecker 2022-06-08 121 * the possibility of usermode upcalls having messed up our count 172114552701b8 Frederic Weisbecker 2022-06-08 122 * of interrupt nesting level during the prior busy period. 172114552701b8 Frederic Weisbecker 2022-06-08 123 */ 171476775d32a4 Frederic Weisbecker 2022-06-08 124 static void noinstr ct_kernel_exit(bool user, int offset) 172114552701b8 Frederic Weisbecker 2022-06-08 125 { 172114552701b8 Frederic Weisbecker 2022-06-08 @126 struct context_tracking *ct = this_cpu_ptr(&context_tracking); 172114552701b8 Frederic Weisbecker 2022-06-08 127 172114552701b8 Frederic Weisbecker 2022-06-08 128 WARN_ON_ONCE(ct_dynticks_nmi_nesting() != DYNTICK_IRQ_NONIDLE); 172114552701b8 Frederic Weisbecker 2022-06-08 129 WRITE_ONCE(ct->dynticks_nmi_nesting, 0); 172114552701b8 Frederic Weisbecker 2022-06-08 130 WARN_ON_ONCE(IS_ENABLED(CONFIG_RCU_EQS_DEBUG) && 172114552701b8 Frederic Weisbecker 2022-06-08 131 ct_dynticks_nesting() == 0); 172114552701b8 Frederic Weisbecker 2022-06-08 132 if (ct_dynticks_nesting() != 1) { 172114552701b8 Frederic Weisbecker 2022-06-08 133 // RCU will still be watching, so just do accounting and leave. 172114552701b8 Frederic Weisbecker 2022-06-08 134 ct->dynticks_nesting--; 172114552701b8 Frederic Weisbecker 2022-06-08 135 return; 172114552701b8 Frederic Weisbecker 2022-06-08 136 } 172114552701b8 Frederic Weisbecker 2022-06-08 137 172114552701b8 Frederic Weisbecker 2022-06-08 138 instrumentation_begin(); 172114552701b8 Frederic Weisbecker 2022-06-08 139 lockdep_assert_irqs_disabled(); 172114552701b8 Frederic Weisbecker 2022-06-08 140 trace_rcu_dyntick(TPS("Start"), ct_dynticks_nesting(), 0, ct_dynticks()); 172114552701b8 Frederic Weisbecker 2022-06-08 141 WARN_ON_ONCE(IS_ENABLED(CONFIG_RCU_EQS_DEBUG) && !user && !is_idle_task(current)); 172114552701b8 Frederic Weisbecker 2022-06-08 142 rcu_preempt_deferred_qs(current); 172114552701b8 Frederic Weisbecker 2022-06-08 143 171476775d32a4 Frederic Weisbecker 2022-06-08 144 // instrumentation for the noinstr ct_kernel_exit_state() 171476775d32a4 Frederic Weisbecker 2022-06-08 145 instrument_atomic_write(&ct->state, sizeof(ct->state)); 172114552701b8 Frederic Weisbecker 2022-06-08 146 172114552701b8 Frederic Weisbecker 2022-06-08 147 instrumentation_end(); 172114552701b8 Frederic Weisbecker 2022-06-08 148 WRITE_ONCE(ct->dynticks_nesting, 0); /* Avoid irq-access tearing. */ 172114552701b8 Frederic Weisbecker 2022-06-08 149 // RCU is watching here ... 171476775d32a4 Frederic Weisbecker 2022-06-08 150 ct_kernel_exit_state(offset); 172114552701b8 Frederic Weisbecker 2022-06-08 151 // ... but is no longer watching here. 172114552701b8 Frederic Weisbecker 2022-06-08 152 rcu_dynticks_task_enter(); 172114552701b8 Frederic Weisbecker 2022-06-08 153 } 172114552701b8 Frederic Weisbecker 2022-06-08 154 :::::: The code at line 126 was first introduced by commit :::::: 172114552701b85d5c3b1a089a73ee85d0d7786b rcu/context-tracking: Move RCU-dynticks internal functions to context_tracking :::::: TO: Frederic Weisbecker :::::: CC: Paul E. 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