The quilt patch titled Subject: nommu: fix memory leak in do_mmap() error path has been removed from the -mm tree. Its filename was nommu-fix-memory-leak-in-do_mmap-error-path.patch
This patch was dropped because it was merged into the mm-hotfixes-stable branch of git://git.kernel.org/pub/scm/linux/kernel/git/akpm/mm
------------------------------------------------------ From: Liam Howlett liam.howlett@oracle.com Subject: nommu: fix memory leak in do_mmap() error path Date: Mon, 9 Jan 2023 20:55:21 +0000
The preallocation of the maple tree nodes may leak if the error path to "error_just_free" is taken. Fix this by moving the freeing of the maple tree nodes to a shared location for all error paths.
Link: https://lkml.kernel.org/r/20230109205507.955577-1-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 | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-)
--- a/mm/nommu.c~nommu-fix-memory-leak-in-do_mmap-error-path +++ a/mm/nommu.c @@ -1240,6 +1240,7 @@ share: error_just_free: up_write(&nommu_region_sem); error: + mas_destroy(&mas); if (region->vm_file) fput(region->vm_file); kmem_cache_free(vm_region_jar, region); @@ -1250,7 +1251,6 @@ error:
sharing_violation: up_write(&nommu_region_sem); - mas_destroy(&mas); pr_warn("Attempt to share mismatched mappings\n"); ret = -EINVAL; goto error; _
Patches currently in -mm which might be from liam.howlett@oracle.com are
maple_tree-fix-mas_empty_area_rev-lower-bound-validation.patch maple_tree-remove-gfp_zero-from-kmem_cache_alloc-and-kmem_cache_alloc_bulk.patch