[mm,v2,22/33] kasan: use virt_addr_valid in kasan_addr_to_page/slab

Commit Message

[e-mail] July 19, 2022, 12:10 a.m. UTC

From: Andrey Konovalov <[e-mail]>

Instead of open-coding the validity checks for addr in
kasan_addr_to_page/slab(), use the virt_addr_valid() helper.

Signed-off-by: Andrey Konovalov <[e-mail]>

---

Changes v1->v2:
- This is a new patch.
---
 mm/kasan/report.c | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

Patch

diff --git a/mm/kasan/report.c b/mm/kasan/report.c
index 83f420a28c0b..570f9419b90c 100644
--- a/mm/kasan/report.c
+++ b/mm/kasan/report.c
@@ -208,14 +208,14 @@  static void print_track(struct kasan_track *track, const char *prefix)
 
 struct page *kasan_addr_to_page(const void *addr)
 {
-	if ((addr >= (void *)PAGE_OFFSET) && (addr < high_memory))
+	if (virt_addr_valid(addr))
 		return virt_to_head_page(addr);
 	return NULL;
 }
 
 struct slab *kasan_addr_to_slab(const void *addr)
 {
-	if ((addr >= (void *)PAGE_OFFSET) && (addr < high_memory))
+	if (virt_addr_valid(addr))
 		return virt_to_slab(addr);
 	return NULL;
 }