linux-kernel - [PATCH v8 12/23] tools/testing/vma: Implement vm

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: Windows password security audit tool. GUI, reports in PDF.

[<prev] [next>] [<thread-prev] [thread-next>] [day] [month] [year] [list]

Message-Id: <20250910-slub-percpu-caches-v8-12-ca3099d8352c@suse.cz>
Date: Wed, 10 Sep 2025 10:01:14 +0200
From: Vlastimil Babka <vbabka@...e.cz>
To: Suren Baghdasaryan <surenb@...gle.com>, 
 "Liam R. Howlett" <Liam.Howlett@...cle.com>, 
 Christoph Lameter <cl@...two.org>, David Rientjes <rientjes@...gle.com>
Cc: Roman Gushchin <roman.gushchin@...ux.dev>, 
 Harry Yoo <harry.yoo@...cle.com>, Uladzislau Rezki <urezki@...il.com>, 
 Sidhartha Kumar <sidhartha.kumar@...cle.com>, linux-mm@...ck.org, 
 linux-kernel@...r.kernel.org, rcu@...r.kernel.org, 
 maple-tree@...ts.infradead.org, vbabka@...e.cz
Subject: [PATCH v8 12/23] tools/testing/vma: Implement vm_refcnt reset

From: "Liam R. Howlett" <Liam.Howlett@...cle.com>

Add the reset of the ref count in vma_lock_init().  This is needed if
the vma memory is not zeroed on allocation.

Signed-off-by: Liam R. Howlett <Liam.Howlett@...cle.com>
Signed-off-by: Vlastimil Babka <vbabka@...e.cz>
---
 tools/testing/vma/vma_internal.h | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/tools/testing/vma/vma_internal.h b/tools/testing/vma/vma_internal.h
index f8cf5b184d5b51dd627ff440943a7af3c549f482..6b6e2b05918c9f95b537f26e20a943b34082825a 100644
--- a/tools/testing/vma/vma_internal.h
+++ b/tools/testing/vma/vma_internal.h
@@ -1373,6 +1373,8 @@ static inline void ksm_exit(struct mm_struct *mm)

 static inline void vma_lock_init(struct vm_area_struct *vma, bool reset_refcnt)
 {
+	if (reset_refcnt)
+		refcount_set(&vma->vm_refcnt, 0);
 }

 static inline void vma_numab_state_init(struct vm_area_struct *vma)

-- 
2.51.0