Unverified Commit 6bb03d91 authored Nov 25, 2023 by openeuler-ci-bot Committed by Gitee Nov 25, 2023

!2908 mm/migrate.c: fix potential indeterminate pte entry in migrate_vma_insert_page()

Merge Pull Request from: @ci-robot 
 
PR sync from: Tong Tiangen <tongtiangen@huawei.com>
https://mailweb.openeuler.org/hyperkitty/list/kernel@openeuler.org/message/64W3AZSG2HXSPJ6VJUEN3WAOL5NQ7O7Z/ 
 
https://gitee.com/openeuler/kernel/issues/I8HVSL 
 
Link:https://gitee.com/openeuler/kernel/pulls/2908

 

Reviewed-by: Kefeng Wang <wangkefeng.wang@huawei.com>
Reviewed-by: Liu YongQiang <liuyongqiang13@huawei.com>
Signed-off-by: Zhang Changzhong <zhangchangzhong@huawei.com>

parents 5a2bdf9e 6e0b2055

mm/migrate.c

+7 −0

Original line number	Diff line number	Diff line
		@@ -2688,6 +2688,13 @@ static void migrate_vma_insert_page(struct migrate_vma *migrate,
		if (vma->vm_flags & VM_WRITE)
		entry = pte_mkwrite(pte_mkdirty(entry));
		entry = pte_mkdevmap(entry);
		} else {
		/*
		* For now we not support migrating to MEMORY_DEVICE_FS_DAX
		* and MEMORY_DEVICE_PCI_P2PDMA device memory.
		*/
		pr_warn_once("Unsupported ZONE_DEVICE page type.\n");
		goto abort;
		}
		} else {
		entry = mk_pte(page, vma->vm_page_prot);