The patch titled Subject: nommu: fix do_munmap() error path has been added to the -mm mm-hotfixes-unstable branch. Its filename is nommu-fix-do_munmap-error-path.patch
This patch will shortly appear at https://git.kernel.org/pub/scm/linux/kernel/git/akpm/25-new.git/tree/patches...
This patch will later appear in the mm-hotfixes-unstable branch at git://git.kernel.org/pub/scm/linux/kernel/git/akpm/mm
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------------------------------------------------------ From: Liam Howlett liam.howlett@oracle.com Subject: nommu: fix do_munmap() error path Date: Mon, 9 Jan 2023 20:57:21 +0000
When removing a VMA from the tree fails due to no memory, do not free the VMA since a reference still exists.
Link: https://lkml.kernel.org/r/20230109205708.956103-1-Liam.Howlett@oracle.com Fixes: 8220543df148 ("nommu: remove uses of VMA linked list") Signed-off-by: Liam R. Howlett Liam.Howlett@oracle.com Cc: Matthew Wilcox (Oracle) willy@infradead.org Cc: Vlastimil Babka vbabka@suse.cz Cc: Yu Zhao yuzhao@google.com Cc: stable@vger.kernel.org Signed-off-by: Andrew Morton akpm@linux-foundation.org ---
mm/nommu.c | 3 ++- 1 file changed, 2 insertions(+), 1 deletion(-)
--- a/mm/nommu.c~nommu-fix-do_munmap-error-path +++ a/mm/nommu.c @@ -1509,7 +1509,8 @@ int do_munmap(struct mm_struct *mm, unsi erase_whole_vma: if (delete_vma_from_mm(vma)) ret = -ENOMEM; - delete_vma(mm, vma); + else + delete_vma(mm, vma); return ret; }
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Patches currently in -mm which might be from liam.howlett@oracle.com are
nommu-fix-memory-leak-in-do_mmap-error-path.patch nommu-fix-do_munmap-error-path.patch nommu-fix-split_vma-map_count-error.patch maple_tree-remove-gfp_zero-from-kmem_cache_alloc-and-kmem_cache_alloc_bulk.patch