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@xxxxxxxxxx>
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@xxxxxxxxxx
Signed-off-by: Kefeng Wang <wangkefeng.wang@xxxxxxxxxx>
Acked-by: Paul Moore <paul@xxxxxxxxxxxxxx>
Reviewed-by: David Hildenbrand <david@xxxxxxxxxx>
Cc: Stephen Smalley <stephen.smalley.work@xxxxxxxxx>
Cc: Eric Paris <eparis@xxxxxxxxxxxxxx>
Cc: Alex Deucher <alexander.deucher@xxxxxxx>
Cc: Arnaldo Carvalho de Melo <acme@xxxxxxxxxx>
Cc: Christian Göttsche <cgzones@xxxxxxxxxxxxxx>
Cc: "Christian König" <christian.koenig@xxxxxxx>
Cc: Daniel Vetter <daniel@xxxxxxxx>
Cc: David Airlie <airlied@xxxxxxxxx>
Cc: Felix Kuehling <felix.kuehling@xxxxxxx>
Cc: "Pan, Xinhui" <Xinhui.Pan@xxxxxxx>
Cc: Peter Zijlstra <peterz@xxxxxxxxxxxxx>
Signed-off-by: Andrew Morton <akpm@xxxxxxxxxxxxxxxxxxxx>
---
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@xxxxxxxxxx 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
