[merged mm-stable] mm-vmalloc-bail-out-early-on-invalid-page_shift-in-__vmap_pages_range_noflush.patch removed from -mm tree

[merged mm-stable] mm-vmalloc-bail-out-early-on-invalid-page_shift-in-__vmap_pages_range_noflush.patch removed from -mm tree

[Andrew Morton]

The quilt patch titled
     Subject: mm/vmalloc: bail out early on invalid page_shift in __vmap_pages_range_noflush()
has been removed from the -mm tree.  Its filename was
     mm-vmalloc-bail-out-early-on-invalid-page_shift-in-__vmap_pages_range_noflush.patch

This patch was dropped because it was merged into the mm-stable branch
of git://git.kernel.org/pub/scm/linux/kernel/git/akpm/mm

------------------------------------------------------
From: Wen Jiang <jiangwen6@xiaomi.com>
Subject: mm/vmalloc: bail out early on invalid page_shift in __vmap_pages_range_noflush()
Date: Sun,  4 Oct 2026 15:16:39 +0800

__vmap_pages_range_noflush() currently only warns when page_shift is
smaller than PAGE_SHIFT, then continues with the invalid shift.  Return
-EINVAL instead so the bogus argument is caught immediately.

Link: https://lore.kernel.org/20261004071639.119857-1-jiangwenxiaomi@gmail.com
Signed-off-by: Wen Jiang <jiangwen6@xiaomi.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Suggested-by: Uladzislau Rezki (Sony) <urezki@gmail.com>
Reviewed-by: Barry Song <baohua@kernel.org>
Reviewed-by: Uladzislau Rezki (Sony) <urezki@gmail.com>
Reviewed-by: Vishal Moola (Fractile) <vishal.moola@gmail.com>
Cc: Dev Jain <dev.jain@arm.com>
---

 mm/vmalloc.c |    3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

--- a/mm/vmalloc.c~mm-vmalloc-bail-out-early-on-invalid-page_shift-in-__vmap_pages_range_noflush
+++ a/mm/vmalloc.c
@@ -684,7 +684,8 @@ int __vmap_pages_range_noflush(unsigned
 {
 	unsigned int i, nr = (end - addr) >> PAGE_SHIFT;
 
-	WARN_ON(page_shift < PAGE_SHIFT);
+	if (WARN_ON_ONCE(page_shift < PAGE_SHIFT))
+		return -EINVAL;
 
 	if (!IS_ENABLED(CONFIG_HAVE_ARCH_HUGE_VMALLOC) ||
 			page_shift == PAGE_SHIFT)
_

Patches currently in -mm which might be from jiangwen6@xiaomi.com are