The quilt patch titled
Subject: mm: move debug checks from __vunmap to remove_vm_area
has been removed from the -mm tree. Its filename was
mm-move-debug-checks-from-__vunmap-to-remove_vm_area.patch
This patch was dropped because it was merged into the mm-stable branch
of git://git.kernel.org/pub/scm/linux/kernel/git/akpm/mm
------------------------------------------------------
From: Christoph Hellwig <hch@xxxxxx>
Subject: mm: move debug checks from __vunmap to remove_vm_area
Date: Sat, 21 Jan 2023 08:10:49 +0100
All these checks apply to the free_vm_area interface as well, so move them
to the common routine.
Link: https://lkml.kernel.org/r/20230121071051.1143058-9-hch@xxxxxx
Signed-off-by: Christoph Hellwig <hch@xxxxxx>
Reviewed-by: Uladzislau Rezki (Sony) <urezki@xxxxxxxxx>
Reviewed-by: David Hildenbrand <david@xxxxxxxxxx>
Cc: Alexander Potapenko <glider@xxxxxxxxxx>
Cc: Andrey Konovalov <andreyknvl@xxxxxxxxx>
Cc: Andrey Ryabinin <ryabinin.a.a@xxxxxxxxx>
Cc: Dmitry Vyukov <dvyukov@xxxxxxxxxx>
Cc: Vincenzo Frascino <vincenzo.frascino@xxxxxxx>
Signed-off-by: Andrew Morton <akpm@xxxxxxxxxxxxxxxxxxxx>
---
--- a/mm/vmalloc.c~mm-move-debug-checks-from-__vunmap-to-remove_vm_area
+++ a/mm/vmalloc.c
@@ -2573,11 +2573,20 @@ struct vm_struct *remove_vm_area(const v
might_sleep();
+ if (WARN(!PAGE_ALIGNED(addr), "Trying to vfree() bad address (%p)\n",
+ addr))
+ return NULL;
+
va = find_unlink_vmap_area((unsigned long)addr);
if (!va || !va->vm)
return NULL;
vm = va->vm;
+
+ debug_check_no_locks_freed(vm->addr, get_vm_area_size(vm));
+ debug_check_no_obj_freed(vm->addr, get_vm_area_size(vm));
kasan_free_module_shadow(vm);
+ kasan_poison_vmalloc(vm->addr, get_vm_area_size(vm));
+
free_unmap_vmap_area(va);
return vm;
}
@@ -2649,10 +2658,6 @@ static void __vunmap(const void *addr, i
if (!addr)
return;
- if (WARN(!PAGE_ALIGNED(addr), "Trying to vfree() bad address (%p)\n",
- addr))
- return;
-
area = remove_vm_area(addr);
if (unlikely(!area)) {
WARN(1, KERN_ERR "Trying to vfree() nonexistent vm area (%p)\n",
@@ -2660,11 +2665,6 @@ static void __vunmap(const void *addr, i
return;
}
- debug_check_no_locks_freed(area->addr, get_vm_area_size(area));
- debug_check_no_obj_freed(area->addr, get_vm_area_size(area));
-
- kasan_poison_vmalloc(area->addr, get_vm_area_size(area));
-
vm_remove_mappings(area, deallocate_pages);
if (deallocate_pages) {
_
Patches currently in -mm which might be from hch@xxxxxx are
