From 08ac85521cb2e26f25b885492180815ce8eaf4b7 Mon Sep 17 00:00:00 2001
From: Hugh Dickins <hughd@google.com>
Date: Tue, 18 Oct 2022 20:18:38 -0700
Subject: [PATCH] mm: /proc/pid/smaps_rollup: fix maple tree search
/proc/pid/smaps_rollup showed 0 kB for everything: now find first vma.
Link: https://lkml.kernel.org/r/3011bee7-182-97a2-1083-d5f5b688e54b@google.com
Fixes: c4c84f06285e ("fs/proc/task_mmu: stop using linked list and highest_vm_end")
Signed-off-by: Hugh Dickins <hughd@google.com>
Reviewed-by: Liam R. Howlett <Liam.Howlett@oracle.com>
Cc: Alexey Dobriyan <adobriyan@gmail.com>
Cc: Matthew Wilcox (Oracle) <willy@infradead.org>
Cc: Vlastimil Babka <vbabka@suse.cz>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
---
fs/proc/task_mmu.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/fs/proc/task_mmu.c b/fs/proc/task_mmu.c
index 8b4f3073f8f55..8a74cdcc9af00 100644
--- a/fs/proc/task_mmu.c
+++ b/fs/proc/task_mmu.c
@@ -902,7 +902,7 @@ static int show_smaps_rollup(struct seq_file *m, void *v)
goto out_put_mm;
hold_task_mempolicy(priv);
- vma = mas_find(&mas, 0);
+ vma = mas_find(&mas, ULONG_MAX);
if (unlikely(!vma))
goto empty_set;
--
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