The patch titled Subject: fs/proc/task_mmu: fix uninitialized variable in pagemap_pmd_range() has been added to the -mm mm-unstable branch. Its filename is fs-proc-move-page_mapcount-to-fs-proc-internalh-fix.patch This patch will shortly appear at https://git.kernel.org/pub/scm/linux/kernel/git/akpm/25-new.git/tree/patches/fs-proc-move-page_mapcount-to-fs-proc-internalh-fix.patch This patch will later appear in the mm-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: Dan Carpenter <dan.carpenter@xxxxxxxxxx> Subject: fs/proc/task_mmu: fix uninitialized variable in pagemap_pmd_range() Date: Thu, 13 Jun 2024 17:34:33 +0300 The "folio" pointer is tested for NULL, but it's either valid or uninitialized. Initialize it to NULL. Link: https://lkml.kernel.org/r/9d6eaba7-92f8-4a70-8765-38a519680a87@moroto.mountain Fixes: 84f57f8b8914 ("fs/proc: move page_mapcount() to fs/proc/internal.h") Signed-off-by: Dan Carpenter <dan.carpenter@xxxxxxxxxx> Acked-by: David Hildenbrand <david@xxxxxxxxxx> Signed-off-by: Andrew Morton <akpm@xxxxxxxxxxxxxxxxxxxx> --- fs/proc/task_mmu.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) --- a/fs/proc/task_mmu.c~fs-proc-move-page_mapcount-to-fs-proc-internalh-fix +++ a/fs/proc/task_mmu.c @@ -1492,7 +1492,7 @@ static int pagemap_pmd_range(pmd_t *pmdp u64 flags = 0, frame = 0; pmd_t pmd = *pmdp; struct page *page = NULL; - struct folio *folio; + struct folio *folio = NULL; if (vma->vm_flags & VM_SOFTDIRTY) flags |= PM_SOFT_DIRTY; _ Patches currently in -mm which might be from dan.carpenter@xxxxxxxxxx are fs-proc-move-page_mapcount-to-fs-proc-internalh-fix.patch checkpatch-check-for-missing-fixes-tags.patch