[<prev] [next>] [<thread-prev] [thread-next>] [day] [month] [year] [list]
Message-ID: <20230719075127.47736-4-wangkefeng.wang@huawei.com>
Date: Wed, 19 Jul 2023 15:51:13 +0800
From: Kefeng Wang <wangkefeng.wang@...wei.com>
To: Andrew Morton <akpm@...ux-foundation.org>
CC: <amd-gfx@...ts.freedesktop.org>, <dri-devel@...ts.freedesktop.org>,
<linux-kernel@...r.kernel.org>, <linux-fsdevel@...r.kernel.org>,
<linux-mm@...ck.org>, <linux-perf-users@...r.kernel.org>,
<selinux@...r.kernel.org>,
Kefeng Wang <wangkefeng.wang@...wei.com>,
Paul Moore <paul@...l-moore.com>,
Stephen Smalley <stephen.smalley.work@...il.com>,
Eric Paris <eparis@...isplace.org>
Subject: [PATCH v2 3/4] selinux: use vma_is_initial_stack() and vma_is_initial_heap()
Use the helpers to simplify code.
Cc: Paul Moore <paul@...l-moore.com>
Cc: Stephen Smalley <stephen.smalley.work@...il.com>
Cc: Eric Paris <eparis@...isplace.org>
Acked-by: Paul Moore <paul@...l-moore.com>
Signed-off-by: Kefeng Wang <wangkefeng.wang@...wei.com>
---
security/selinux/hooks.c | 7 ++-----
1 file changed, 2 insertions(+), 5 deletions(-)
diff --git a/security/selinux/hooks.c b/security/selinux/hooks.c
index d06e350fedee..ee8575540a8e 100644
--- a/security/selinux/hooks.c
+++ b/security/selinux/hooks.c
@@ -3762,13 +3762,10 @@ static int selinux_file_mprotect(struct vm_area_struct *vma,
if (default_noexec &&
(prot & PROT_EXEC) && !(vma->vm_flags & VM_EXEC)) {
int rc = 0;
- if (vma->vm_start >= vma->vm_mm->start_brk &&
- vma->vm_end <= vma->vm_mm->brk) {
+ if (vma_is_initial_heap(vma)) {
rc = avc_has_perm(sid, sid, SECCLASS_PROCESS,
PROCESS__EXECHEAP, NULL);
- } else if (!vma->vm_file &&
- ((vma->vm_start <= vma->vm_mm->start_stack &&
- vma->vm_end >= vma->vm_mm->start_stack) ||
+ } else if (!vma->vm_file && (vma_is_initial_stack(vma) ||
vma_is_stack_for_current(vma))) {
rc = avc_has_perm(sid, sid, SECCLASS_PROCESS,
PROCESS__EXECSTACK, NULL);
--
2.27.0
Powered by blists - more mailing lists