lists.openwall.net   lists  /  announce  owl-users  owl-dev  john-users  john-dev  passwdqc-users  yescrypt  popa3d-users  /  oss-security  kernel-hardening  musl  sabotage  tlsify  passwords  /  crypt-dev  xvendor  /  Bugtraq  Full-Disclosure  linux-kernel  linux-netdev  linux-ext4  linux-hardening  linux-cve-announce  PHC 
Open Source and information security mailing list archives
 
Hash Suite for Android: free password hash cracker in your pocket
[<prev] [next>] [<thread-prev] [thread-next>] [day] [month] [year] [list]
Message-Id: <20230724134644.1299963-4-usama.arif@bytedance.com>
Date:   Mon, 24 Jul 2023 14:46:43 +0100
From:   Usama Arif <usama.arif@...edance.com>
To:     linux-mm@...ck.org, muchun.song@...ux.dev, mike.kravetz@...cle.com,
        rppt@...nel.org
Cc:     linux-kernel@...r.kernel.org, fam.zheng@...edance.com,
        liangma@...ngbit.com, simon.evans@...edance.com,
        punit.agrawal@...edance.com, Usama Arif <usama.arif@...edance.com>
Subject: [RFC 3/4] mm/hugetlb_vmemmap: Use nid of the head page to reallocate it

If tail page prep and initialization is skipped, then the "start"
page will not contain the correct nid. Use the nid from first
vmemap page.

Signed-off-by: Usama Arif <usama.arif@...edance.com>
---
 mm/hugetlb_vmemmap.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/mm/hugetlb_vmemmap.c b/mm/hugetlb_vmemmap.c
index b721e87de2b3..bdf750a4786b 100644
--- a/mm/hugetlb_vmemmap.c
+++ b/mm/hugetlb_vmemmap.c
@@ -324,7 +324,7 @@ static int vmemmap_remap_free(unsigned long start, unsigned long end,
 		.reuse_addr	= reuse,
 		.vmemmap_pages	= &vmemmap_pages,
 	};
-	int nid = page_to_nid((struct page *)start);
+	int nid = page_to_nid((struct page *)reuse);
 	gfp_t gfp_mask = GFP_KERNEL | __GFP_THISNODE | __GFP_NORETRY |
 			__GFP_NOWARN;
 
-- 
2.25.1

Powered by blists - more mailing lists

Powered by Openwall GNU/*/Linux Powered by OpenVZ