The patch titled
Subject: mm: fix unaccount of memory on vma_link() failure
has been added to the -mm mm-unstable branch. Its filename is
mm-fix-unaccount-of-memory-on-vma_link-failure.patch
This patch will shortly appear at
https://git.kernel.org/pub/scm/linux/kernel/git/akpm/25-new.git/tree/patches/mm-fix-unaccount-of-memory-on-vma_link-failure.patch
This patch will later appear in the mm-unstable branch at
git://git.kernel.org/pub/scm/linux/kernel/git/akpm/mm
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------------------------------------------------------
From: Anthony Yznaga <anthony.yznaga@xxxxxxxxxx>
Subject: mm: fix unaccount of memory on vma_link() failure
Date: Tue, 29 Aug 2023 17:43:24 -0700
Fix insert_vm_struct() so that only accounted memory is unaccounted if
vma_link() fails.
Link: https://lkml.kernel.org/r/20230830004324.16101-1-anthony.yznaga@xxxxxxxxxx
Fixes: d4af56c5c7c6 ("mm: start tracking VMAs with maple tree")
Signed-off-by: Anthony Yznaga <anthony.yznaga@xxxxxxxxxx>
Cc: Liam R. Howlett <Liam.Howlett@xxxxxxxxxx>
Cc: Matthew Wilcox (Oracle) <willy@xxxxxxxxxxxxx>
Signed-off-by: Andrew Morton <akpm@xxxxxxxxxxxxxxxxxxxx>
---
mm/mmap.c | 3 ++-
1 file changed, 2 insertions(+), 1 deletion(-)
--- a/mm/mmap.c~mm-fix-unaccount-of-memory-on-vma_link-failure
+++ a/mm/mmap.c
@@ -3278,7 +3278,8 @@ int insert_vm_struct(struct mm_struct *m
}
if (vma_link(mm, vma)) {
- vm_unacct_memory(charged);
+ if (vma->vm_flags & VM_ACCOUNT)
+ vm_unacct_memory(charged);
return -ENOMEM;
}
_
Patches currently in -mm which might be from anthony.yznaga@xxxxxxxxxx are
mm-mremap-fix-unaccount-of-memory-on-vma_merge-failure.patch
mm-fix-unaccount-of-memory-on-vma_link-failure.patch
