mk-rootfs.sh

hc

2023-12-11 072de836f53be56a70cecf70b43ae43b7ce17376

 kernel/arch/x86/pci/mmconfig-shared.c
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@@ -29,6 +29,7 @@
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 static bool pci_mmcfg_running_state;
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 static bool pci_mmcfg_arch_init_failed;
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 static DEFINE_MUTEX(pci_mmcfg_lock);
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+#define pci_mmcfg_lock_held() lock_is_held(&(pci_mmcfg_lock).dep_map)
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 LIST_HEAD(pci_mmcfg_list);
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@@ -54,7 +55,7 @@
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 	struct pci_mmcfg_region *cfg;
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 	/* keep list sorted by segment and starting bus number */
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-	list_for_each_entry_rcu(cfg, &pci_mmcfg_list, list) {
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+	list_for_each_entry_rcu(cfg, &pci_mmcfg_list, list, pci_mmcfg_lock_held()) {
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 		if (cfg->segment > new->segment ||
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 		    (cfg->segment == new->segment &&
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 		     cfg->start_bus >= new->start_bus)) {
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@@ -118,7 +119,7 @@
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 {
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 	struct pci_mmcfg_region *cfg;
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-	list_for_each_entry_rcu(cfg, &pci_mmcfg_list, list)
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+	list_for_each_entry_rcu(cfg, &pci_mmcfg_list, list, pci_mmcfg_lock_held())
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 		if (cfg->segment == segment &&
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 		    cfg->start_bus <= bus && bus <= cfg->end_bus)
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 			return cfg;