Linux kernel -stable discussions
 help / color / mirror / Atom feed
From: Andrew Morton <akpm@linux-foundation.org>
To: mm-commits@vger.kernel.org,yuanchu@google.com,weixugc@google.com,stable@vger.kernel.org,shakeel.butt@linux.dev,mhocko@kernel.org,ljs@kernel.org,kasong@tencent.com,hannes@cmpxchg.org,david@kernel.org,baoquan.he@linux.dev,baolin.wang@linux.alibaba.com,baohua@kernel.org,axelrasmussen@google.com,arnd@arndb.de,akpm@linux-foundation.org,akpm@linux-foundation.org
Subject: + mm-vmscanc-fix-min-signedness-mismatch.patch added to mm-hotfixes-unstable branch
Date: Wed, 16 Sep 2026 16:30:52 -0700	[thread overview]
Message-ID: <20260916233053.5092F1F000FF@smtp.kernel.org> (raw)


The patch titled
     Subject: mm/vmscan.c: fix min() signedness mismatch
has been added to the -mm mm-hotfixes-unstable branch.  Its filename is
     mm-vmscanc-fix-min-signedness-mismatch.patch

This patch will shortly appear at
     https://git.kernel.org/pub/scm/linux/kernel/git/akpm/25-new.git/tree/patches/mm-vmscanc-fix-min-signedness-mismatch.patch

This patch will later appear in the mm-hotfixes-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 various
branches at git://git.kernel.org/pub/scm/linux/kernel/git/akpm/mm
and is updated there most days

------------------------------------------------------
From: Andrew Morton <akpm@linux-foundation.org>
Subject: mm/vmscan.c: fix min() signedness mismatch
Date: Wed Sep 16 04:21:22 PM PDT 2026

A __noipa conversion from Arnd [1] somehow revealed a longstanding min()
error in read_ctrl_pos().  Plug it with min_t().

Cc: Arnd Bergmann <arnd@arndb.de>
Cc: Axel Rasmussen <axelrasmussen@google.com>
Cc: Baolin Wang <baolin.wang@linux.alibaba.com>
Cc: Baoquan He <baoquan.he@linux.dev>
Cc: Barry Song <baohua@kernel.org>
Cc: David Hildenbrand <david@kernel.org>
Cc: Johannes Weiner <hannes@cmpxchg.org>
Cc: Kairui Song <kasong@tencent.com>
Cc: Lorenzo Stoakes <ljs@kernel.org>
Cc: Michal Hocko <mhocko@kernel.org>
Cc: Shakeel Butt <shakeel.butt@linux.dev>
Cc: Wei Xu <weixugc@google.com>
Cc: Yuanchu Xie <yuanchu@google.com>
Cc: <stable@vger.kernel.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
---

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

--- a/mm/vmscan.c~mm-vmscanc-fix-min-signedness-mismatch
+++ a/mm/vmscan.c
@@ -3205,7 +3205,7 @@ static void read_ctrl_pos(struct lruvec
 	pos->gain = gain;
 	pos->refaulted = pos->total = 0;
 
-	for (i = tier % MAX_NR_TIERS; i <= min(tier, MAX_NR_TIERS - 1); i++) {
+	for (i = tier % MAX_NR_TIERS; i <= min_t(unsigned int, tier, MAX_NR_TIERS - 1); i++) {
 		pos->refaulted += lrugen->avg_refaulted[type][i] +
 				  atomic_long_read(&lrugen->refaulted[hist][type][i]);
 		pos->total += lrugen->avg_total[type][i] +
_

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

mm-vmscanc-fix-min-signedness-mismatch.patch
mm-memory_hotplug-factor-out-node_is_memoryless-fix.patch
docs-admin-guide-mm-damon-usage-update-for-hugepage_size-fix.patch
drivers-media-v4l2-core-v4l2-vp9c-reduce-inlining.patch


                 reply	other threads:[~2026-09-16 23:30 UTC|newest]

Thread overview: [no followups] expand[flat|nested]  mbox.gz  Atom feed

Reply instructions:

You may reply publicly to this message via plain-text email
using any one of the following methods:

* Save the following mbox file, import it into your mail client,
  and reply-to-all from there: mbox

  Avoid top-posting and favor interleaved quoting:
  https://en.wikipedia.org/wiki/Posting_style#Interleaved_style

* Reply using the --to, --cc, and --in-reply-to
  switches of git-send-email(1):

  git send-email \
    --in-reply-to=20260916233053.5092F1F000FF@smtp.kernel.org \
    --to=akpm@linux-foundation.org \
    --cc=arnd@arndb.de \
    --cc=axelrasmussen@google.com \
    --cc=baohua@kernel.org \
    --cc=baolin.wang@linux.alibaba.com \
    --cc=baoquan.he@linux.dev \
    --cc=david@kernel.org \
    --cc=hannes@cmpxchg.org \
    --cc=kasong@tencent.com \
    --cc=ljs@kernel.org \
    --cc=mhocko@kernel.org \
    --cc=mm-commits@vger.kernel.org \
    --cc=shakeel.butt@linux.dev \
    --cc=stable@vger.kernel.org \
    --cc=weixugc@google.com \
    --cc=yuanchu@google.com \
    /path/to/YOUR_REPLY

  https://kernel.org/pub/software/scm/git/docs/git-send-email.html

* If your mail client supports setting the In-Reply-To header
  via mailto: links, try the mailto: link
Be sure your reply has a Subject: header at the top and a blank line before the message body.
This is a public inbox, see mirroring instructions
for how to clone and mirror all data and code used for this inbox