Unverified Commit 4c009121 authored by openeuler-ci-bot's avatar openeuler-ci-bot Committed by Gitee
Browse files

!12831 lib/generic-radix-tree.c: Fix rare race in __genradix_ptr_alloc() 

Merge Pull Request from: @ci-robot 
 
PR sync from: Zhang Zekun <zhangzekun11@huawei.com>
https://mailweb.openeuler.org/hyperkitty/list/kernel@openeuler.org/message/7ZCSR44MFRR3LHQLCWF7KKAAZ4STP7FA/ 
 
https://gitee.com/src-openeuler/kernel/issues/IAVU82 
 
Link:https://gitee.com/openeuler/kernel/pulls/12831

 

Reviewed-by: default avatarWeilong Chen <chenweilong@huawei.com>
Signed-off-by: default avatarYang Yingliang <yangyingliang@huawei.com>
parents a8292867 7384b2e4

lib/generic-radix-tree.c

+2 −0
Original line number Diff line number Diff line
@@ -131,6 +131,8 @@ void *__genradix_ptr_alloc(struct __genradix *radix, size_t offset, 
		if ((v = cmpxchg_release(&radix->root, r, new_root)) == r) {

			v = new_root;

			new_node = NULL;

		} else {

			new_node->children[0] = NULL;

		}

	}