Unverified Commit c81b4f78 authored by openeuler-ci-bot's avatar openeuler-ci-bot Committed by Gitee
Browse files

!15679 list: fix a data-race around ep->rdllist 

Merge Pull Request from: @ci-robot 
 
PR sync from: Zicheng Qu <quzicheng@huawei.com>
https://mailweb.openeuler.org/archives/list/kernel@openeuler.org/message/DFXQF5X43ZBA7HTMFCNSL3Y6KE3HBRJ7/ 
 
https://gitee.com/src-openeuler/kernel/issues/IBP6RN 
 
Link:https://gitee.com/openeuler/kernel/pulls/15679

 

Reviewed-by: default avatarLu Jialin <lujialin4@huawei.com>
Reviewed-by: default avatarLi Nan <linan122@huawei.com>
Signed-off-by: default avatarLi Nan <linan122@huawei.com>
parents d289e187 7f404029

include/linux/list.h

+3 −3
Original line number Diff line number Diff line
@@ -33,7 +33,7 @@ 
static inline void INIT_LIST_HEAD(struct list_head *list)

{

	WRITE_ONCE(list->next, list);

	list->prev = list;

	WRITE_ONCE(list->prev, list);

}



#ifdef CONFIG_DEBUG_LIST
@@ -296,7 +296,7 @@ static inline int list_empty(const struct list_head *head) 
static inline void list_del_init_careful(struct list_head *entry)

{

	__list_del_entry(entry);

	entry->prev = entry;

	WRITE_ONCE(entry->prev, entry);

	smp_store_release(&entry->next, entry);

}
@@ -316,7 +316,7 @@ static inline void list_del_init_careful(struct list_head *entry) 
static inline int list_empty_careful(const struct list_head *head)

{

	struct list_head *next = smp_load_acquire(&head->next);

	return (next == head) && (next == head->prev);

	return (next == head) && (next == READ_ONCE(head->prev));

}



/**