+ mm-mremap-initial-refactor-of-move_vma-fix.patch added to mm-unstable branch

+ mm-mremap-initial-refactor-of-move_vma-fix.patch added to mm-unstable branch

[Andrew Morton]

The patch titled
     Subject: mm-mremap-initial-refactor-of-move_vma-fix
has been added to the -mm mm-unstable branch.  Its filename is
     mm-mremap-initial-refactor-of-move_vma-fix.patch

This patch will shortly appear at
     https://git.kernel.org/pub/scm/linux/kernel/git/akpm/25-new.git/tree/patches/mm-mremap-initial-refactor-of-move_vma-fix.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: Andrew Morton <akpm@linux-foundation.org>
Subject: mm-mremap-initial-refactor-of-move_vma-fix
Date: Tue Mar  4 03:14:08 PM PST 2025

fix uninitialized `err' in prep_move_vma()

Reported-by: Yosry Ahmed <yosry.ahmed@linux.dev>
Closes: https://lkml.kernel.org/r/Z8d0d9N26JBGwi8N@google.com
Cc: Harry Yoo <harry.yoo@oracle.com>
Cc: Jann Horn <jannh@google.com>
Cc: Liam Howlett <liam.howlett@oracle.com>
Cc: Lorenzo Stoakes <lorenzo.stoakes@oracle.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
---

 mm/mremap.c |    2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

--- a/mm/mremap.c~mm-mremap-initial-refactor-of-move_vma-fix
+++ a/mm/mremap.c
@@ -892,7 +892,7 @@ static void vrm_stat_account(struct vma_
 static unsigned long prep_move_vma(struct vma_remap_struct *vrm,
 				   unsigned long *vm_flags_ptr)
 {
-	unsigned long err;
+	unsigned long err = 0;
 	struct vm_area_struct *vma = vrm->vma;
 	unsigned long old_addr = vrm->addr;
 	unsigned long old_len = vrm->old_len;
_

Patches currently in -mm which might be from akpm@linux-foundation.org are

nfs-fix-nfs_release_folio-to-not-deadlock-via-kcompactd-writeback-fix.patch
userfaultfd-do-not-block-on-locking-a-large-folio-with-raised-refcount-fix.patch
mm-vmscan-extract-calculated-pressure-balance-as-a-function-fix.patch
mm-madvise-split-out-mmap-locking-operations-for-madvise-fix-checkpatch-fixes.patch
mm-madvise-remove-redundant-mmap_lock-operations-from-process_madvise-fix.patch
selftests-mm-print-some-details-when-uffd-stress-gets-bad-params-fix.patch
mm-pgtable-convert-some-architectures-to-use-tlb_remove_ptdesc-v2-fix.patch
mm-mremap-initial-refactor-of-move_vma-fix.patch
mm-mremap-thread-state-through-move-page-table-operation-fix.patch
mm-hugetlb-add-hugetlb_alloc_threads-cmdline-option-fix.patch
lib-plistc-add-shortcut-for-plist_requeue-fix.patch
scsi-lpfc-convert-timeouts-to-secs_to_jiffies-fix.patch
signal-avoid-clearing-tif_sigpending-in-recalc_sigpending-if-unset-fix.patch