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List:       linux-mm-commits
Subject:    + selinux-use-vma_is_initial_stack-and-vma_is_initial_heap.patch added to mm-unstable branch
From:       Andrew Morton <akpm () linux-foundation ! org>
Date:       2023-07-28 18:45:58
Message-ID: 20230728184559.8055AC433C9 () smtp ! kernel ! org
[Download RAW message or body]


The patch titled
     Subject: selinux: use vma_is_initial_stack() and vma_is_initial_heap()
has been added to the -mm mm-unstable branch.  Its filename is
     selinux-use-vma_is_initial_stack-and-vma_is_initial_heap.patch

This patch will shortly appear at
     https://git.kernel.org/pub/scm/linux/kernel/git/akpm/25-new.git/tree/patches/selinux-use-vma_is_initial_stack-and-vma_is_initial_heap.patch


This patch will later appear in the mm-unstable branch at
    git://git.kernel.org/pub/scm/linux/kernel/git/akpm/mm

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------------------------------------------------------
From: Kefeng Wang <wangkefeng.wang@huawei.com>
Subject: selinux: use vma_is_initial_stack() and vma_is_initial_heap()
Date: Fri, 28 Jul 2023 13:00:42 +0800

Use the helpers to simplify code.

Link: https://lkml.kernel.org/r/20230728050043.59880-4-wangkefeng.wang@huawei.com
Signed-off-by: Kefeng Wang <wangkefeng.wang@huawei.com>
Acked-by: Paul Moore <paul@paul-moore.com>
Reviewed-by: David Hildenbrand <david@redhat.com>
Cc: Stephen Smalley <stephen.smalley.work@gmail.com>
Cc: Eric Paris <eparis@parisplace.org>
Cc: Alex Deucher <alexander.deucher@amd.com>
Cc: Arnaldo Carvalho de Melo <acme@kernel.org>
Cc: Christian Göttsche <cgzones@googlemail.com>
Cc: "Christian König" <christian.koenig@amd.com>
Cc: Daniel Vetter <daniel@ffwll.ch>
Cc: David Airlie <airlied@gmail.com>
Cc: Felix Kuehling <felix.kuehling@amd.com>
Cc: "Pan, Xinhui" <Xinhui.Pan@amd.com>
Cc: Peter Zijlstra <peterz@infradead.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
---

 security/selinux/hooks.c |    7 ++-----
 1 file changed, 2 insertions(+), 5 deletions(-)

--- a/security/selinux/hooks.c~selinux-use-vma_is_initial_stack-and-vma_is_initial_heap
                
+++ a/security/selinux/hooks.c
@@ -3762,13 +3762,10 @@ static int selinux_file_mprotect(struct
 	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);
_

Patches currently in -mm which might be from wangkefeng.wang@huawei.com are

mm-remove-arguments-of-show_mem.patch
mm-make-show_free_areas-static.patch
mm-factor-out-vma-stack-and-heap-checks.patch
drm-amdkfd-use-vma_is_initial_stack-and-vma_is_initial_heap.patch
selinux-use-vma_is_initial_stack-and-vma_is_initial_heap.patch
perf-core-use-vma_is_initial_stack-and-vma_is_initial_heap.patch


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