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/nommu-fix-do_munmap-error-path.patch This patch will later appear in the mm-hotfixes-unstable branch at git://git.kernel.org/pub/scm/linux/kernel/git/akpm/mm Before you just go and hit "reply", please: a) Consider who else should be cc'ed b) Prefer to cc a suitable mailing list as well c) Ideally: find the original patch on the mailing list and do a reply-to-all to that, adding suitable additional cc's *** Remember to use Documentation/process/submit-checklist.rst when testing your code *** The -mm tree is included into linux-next via the mm-everything branch at git://git.kernel.org/pub/scm/linux/kernel/git/akpm/mm and is updated there every 2-3 working days ------------------------------------------------------ From: Liam Howlett <liam.howlett@xxxxxxxxxx> 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@xxxxxxxxxx Fixes: 8220543df148 ("nommu: remove uses of VMA linked list") Signed-off-by: Liam R. Howlett <Liam.Howlett@xxxxxxxxxx> Cc: Matthew Wilcox (Oracle) <willy@xxxxxxxxxxxxx> Cc: Vlastimil Babka <vbabka@xxxxxxx> Cc: Yu Zhao <yuzhao@xxxxxxxxxx> Cc: <stable@xxxxxxxxxxxxxxx> Signed-off-by: Andrew Morton <akpm@xxxxxxxxxxxxxxxxxxxx> --- 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; } _ Patches currently in -mm which might be from liam.howlett@xxxxxxxxxx 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