vma-detect-infinite-loop-in-vma-tree-fix

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Cc: Jann Horn <jannh@google.com>
Cc: "Liam R. Howlett" <Liam.Howlett@oracle.com>
Cc: Lorenzo Stoakes <lorenzo.stoakes@oracle.com>
Cc: Vlastimil Babka <vbabka@suse.cz>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>

diff --git a/mm/vma.c b/mm/vma.c
index 283e6bc4884f3ef6f6e3a8de87e60082af8007b4..8a454a7bbc80bcb311988bf91cd8c84ab6f96c00 100644 (file)
--- a/mm/vma.c
+++ b/mm/vma.c
@@ -615,6 +615,7 @@ void validate_mm(struct mm_struct *mm)
                        anon_vma_unlock_read(anon_vma);
                }
 #endif
+               /* Check for a infinite loop */
                if (++i > mm->map_count + 10) {
                        i = -1;
                        break;