Messages in this thread | | | Date | Fri, 20 Oct 2023 23:18:25 +0800 | From | kernel test robot <> | Subject | kernel/context_tracking.c:126:39: sparse: sparse: incorrect type in initializer (different address spaces) |
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tree: https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git master head: ce55c22ec8b223a90ff3e084d842f73cfba35588 commit: 481461f5109919babbb393d6f68002936b8e2493 linux/export.h: make <linux/export.h> independent of CONFIG_MODULES date: 3 months ago config: x86_64-alldefconfig (https://download.01.org/0day-ci/archive/20231020/202310202343.ARtbp2kg-lkp@intel.com/config) compiler: gcc-12 (Debian 12.2.0-14) 12.2.0 reproduce (this is a W=1 build): (https://download.01.org/0day-ci/archive/20231020/202310202343.ARtbp2kg-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/202310202343.ARtbp2kg-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 * -- >> arch/x86/kernel/cpu/bugs.c:64:9: sparse: sparse: incorrect type in initializer (different address spaces) @@ expected void const [noderef] __percpu *__vpp_verify @@ got unsigned long long * @@ arch/x86/kernel/cpu/bugs.c:64:9: sparse: expected void const [noderef] __percpu *__vpp_verify arch/x86/kernel/cpu/bugs.c:64:9: sparse: got unsigned long long * arch/x86/kernel/cpu/bugs.c:74:13: sparse: sparse: incorrect type in initializer (different address spaces) @@ expected void const [noderef] __percpu *__vpp_verify @@ got unsigned long long * @@ arch/x86/kernel/cpu/bugs.c:74:13: sparse: expected void const [noderef] __percpu *__vpp_verify arch/x86/kernel/cpu/bugs.c:74:13: sparse: got unsigned long long * arch/x86/kernel/cpu/bugs.c:77:9: sparse: sparse: incorrect type in initializer (different address spaces) @@ expected void const [noderef] __percpu *__vpp_verify @@ got unsigned long long * @@ arch/x86/kernel/cpu/bugs.c:77:9: sparse: expected void const [noderef] __percpu *__vpp_verify arch/x86/kernel/cpu/bugs.c:77:9: sparse: got unsigned long long * arch/x86/kernel/cpu/bugs.c:89:16: sparse: sparse: incorrect type in initializer (different address spaces) @@ expected void const [noderef] __percpu *__vpp_verify @@ got unsigned long long * @@ arch/x86/kernel/cpu/bugs.c:89:16: sparse: expected void const [noderef] __percpu *__vpp_verify arch/x86/kernel/cpu/bugs.c:89:16: sparse: got unsigned long long *
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 <frederic@kernel.org> :::::: CC: Paul E. McKenney <paulmck@kernel.org>
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