[PATCH v1 1/3] perf: MAP_EXECUTABLE does not indicate VM_MAYEXEC

David Hildenbrand
2021-04-21T09:35:26Z

Before commit e9714acf8c43 ("mm: kill vma flag VM_EXECUTABLE and
mm->num_exe_file_vmas"), VM_EXECUTABLE indicated MAP_EXECUTABLE.
MAP_EXECUTABLE is nowadays essentially ignored by the kernel and does
not relate to VM_MAYEXEC.

Fixes: f972eb63b100 ("perf: Pass protection and flags bits through mmap2 interface")
Cc: Peter Zijlstra <peterz@infradead.org>
Signed-off-by: David Hildenbrand <david@redhat.com>
---
kernel/events/core.c | 2 --
1 file changed, 2 deletions(-)

diff --git a/kernel/events/core.c b/kernel/events/core.c
index 03db40f6cba9..3dfd463f1831 100644
--- a/kernel/events/core.c
+++ b/kernel/events/core.c
@@ -8186,8 +8186,6 @@ static void perf_event_mmap_event(struct perf_mmap_event *mmap_event)

if (vma->vm_flags & VM_DENYWRITE)
flags |= MAP_DENYWRITE;
- if (vma->vm_flags & VM_MAYEXEC)
- flags |= MAP_EXECUTABLE;
if (vma->vm_flags & VM_LOCKED)
flags |= MAP_LOCKED;
if (is_vm_hugetlb_page(vma))
--
2.30.2