From b42899ffcae24f9079d0deb3cc1c0a41a15abd1d Mon Sep 17 00:00:00 2001 From: "Liam R. Howlett" Date: Wed, 3 Feb 2021 10:28:44 -0500 Subject: [PATCH] mm/mmap: Fix error path not checking anon_vma for null Signed-off-by: Liam R. Howlett --- mm/mmap.c | 12 ++++++++---- 1 file changed, 8 insertions(+), 4 deletions(-) diff --git a/mm/mmap.c b/mm/mmap.c index ae7e2690ad6fd..e6fe0b636e905 100644 --- a/mm/mmap.c +++ b/mm/mmap.c @@ -2974,8 +2974,10 @@ munmap_full_vma: return ret; mas_store_fail: - anon_vma_interval_tree_post_update_vma(vma); - anon_vma_unlock_write(vma->anon_vma); + if (vma->anon_vma) { + anon_vma_interval_tree_post_update_vma(vma); + anon_vma_unlock_write(vma->anon_vma); + } return -ENOMEM; } @@ -3087,8 +3089,10 @@ vma_alloc_fail: mas_mod_fail: vma->vm_end = addr; - anon_vma_interval_tree_post_update_vma(vma); - anon_vma_unlock_write(vma->anon_vma); + if (vma->anon_vma) { + anon_vma_interval_tree_post_update_vma(vma); + anon_vma_unlock_write(vma->anon_vma); + } return -ENOMEM; } -- 2.50.1