[to-be-updated] fix-do_pages_stat-to-use-compat_uptr_t.patch removed from -mm tree

[to-be-updated] fix-do_pages_stat-to-use-compat_uptr_t.patch removed from -mm tree

[Andrew Morton]

The quilt patch titled
     Subject: mm/migrate.c: fix do_pages_stat to use compat_uptr_t
has been removed from the -mm tree.  Its filename was
     fix-do_pages_stat-to-use-compat_uptr_t.patch

This patch was dropped because an updated version will be issued

------------------------------------------------------
From: Christoph Berg <myon@debian.org>
Subject: mm/migrate.c: fix do_pages_stat to use compat_uptr_t
Date: Wed, 25 Jun 2025 17:24:14 +0200

For arrays with more than 16 entries, the old code would incorrectly
advance the pages pointer by 16 words instead of 16 compat_uptr_t.

[akpm@linux-foundation.org: fix coding style]
Link: https://lkml.kernel.org/r/aFwUnu7ObizycCZ8@msg.df7cb.de
Signed-off-by: Christoph Berg <myon@debian.org>
Suggested-by: Bertrand Drouvot <bertranddrouvot.pg@gmail.com>
Suggested-by: David Hildenbrand <david@redhat.com>
Cc: Alistair Popple <apopple@nvidia.com>
Cc: Byungchul Park <byungchul@sk.com>
Cc: Gregory Price <gourry@gourry.net>
Cc: "Huang, Ying" <ying.huang@linux.alibaba.com>
Cc: Joshua Hahn <joshua.hahnjy@gmail.com>
Cc: Mathew Brost <matthew.brost@intel.com>
Cc: Rakie Kim <rakie.kim@sk.com>
Cc: Zi Yan <ziy@nvidia.com>
Cc: <stable@vger.kernel.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
---

 mm/migrate.c |    9 ++++++++-
 1 file changed, 8 insertions(+), 1 deletion(-)

--- a/mm/migrate.c~fix-do_pages_stat-to-use-compat_uptr_t
+++ a/mm/migrate.c
@@ -2444,7 +2444,14 @@ static int do_pages_stat(struct mm_struc
 		if (copy_to_user(status, chunk_status, chunk_nr * sizeof(*status)))
 			break;
 
-		pages += chunk_nr;
+		if (in_compat_syscall()) {
+			compat_uptr_t __user *pages32 = (compat_uptr_t __user *)pages;
+
+			pages32 += chunk_nr;
+			pages = (const void __user * __user *) pages32;
+		} else {
+			pages += chunk_nr;
+		}
 		status += chunk_nr;
 		nr_pages -= chunk_nr;
 	}
_

Patches currently in -mm which might be from myon@debian.org are