[PATCH 03/22] arch/arc/kernel/troubleshoot: use vma_lookup() instead of find_vma()

Liam Howlett
2021-05-10T17:00:19Z

Use vma_lookup() to find the VMA at a specific address. As vma_lookup()
will return NULL if the address is not within any VMA, the start address
no longer needs to be validated.

Signed-off-by: Liam R. Howlett <Liam.Howlett@Oracle.com>
---
arch/arc/kernel/troubleshoot.c | 8 ++++----
1 file changed, 4 insertions(+), 4 deletions(-)

diff --git a/arch/arc/kernel/troubleshoot.c b/arch/arc/kernel/troubleshoot.c
index a331bb5d8319..7654c2e42dc0 100644
--- a/arch/arc/kernel/troubleshoot.c
+++ b/arch/arc/kernel/troubleshoot.c
@@ -83,12 +83,12 @@ static void show_faulting_vma(unsigned long address)
* non-inclusive vma
*/
mmap_read_lock(active_mm);
- vma = find_vma(active_mm, address);
+ vma = vma_lookup(active_mm, address);

- /* check against the find_vma( ) behaviour which returns the next VMA
- * if the container VMA is not found
+ /* Lookup the vma at the address and report if the container VMA is not
+ * found
*/
- if (vma && (vma->vm_start <= address)) {
+ if (vma) {
char buf[ARC_PATH_MAX];
char *nm = "?";

--
2.30.2