From nobody Sat Feb 7 13:41:42 2026 Received: from mail-oa1-f71.google.com (mail-oa1-f71.google.com [209.85.160.71]) (using TLSv1.2 with cipher ECDHE-RSA-AES128-GCM-SHA256 (128/128 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id 19A91366DC9 for ; Mon, 12 Jan 2026 16:36:49 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=209.85.160.71 ARC-Seal: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1768235811; cv=none; b=KawR9wtGjWtPfWpRZ0veZc1t2KfjxgOxGsabyWvRsAGPQJpQq0kTRXXT9imXbZ6xfzr+Dm/NRSB0hZDyAY194bJaIje2XXpmRMFE1GFhKWePeQUF7JRtXEufPdAN3bTZ9w4GRgXNfDFjicT4cPaN3vjmSJEI65bG+TCzX/WuOVs= ARC-Message-Signature: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1768235811; c=relaxed/simple; bh=2MFPtDWeOQ0iHGG3X2Cmvfwd5lq9JGl23dsttlWU7b8=; h=MIME-Version:Date:In-Reply-To:Message-ID:Subject:From:To: Content-Type; b=nMe7RtOU304Ko+NpMXHJ2qFMgIo46F9JhzOwV5dXnZyLLzI5cMKFcYZW/L2tfX5naRA/9FwhvFnDPTMbyzmkpreFe4xenO8kNDRuV8zt/xz3PlCIIpPHCP5LLoKtFHwZ8OndQ+kWYteUQlpkbStqaSLOA+uEnyEe0MXhdzjpRh4= ARC-Authentication-Results: i=1; smtp.subspace.kernel.org; dmarc=fail (p=none dis=none) header.from=syzkaller.appspotmail.com; spf=pass smtp.mailfrom=M3KW2WVRGUFZ5GODRSRYTGD7.apphosting.bounces.google.com; arc=none smtp.client-ip=209.85.160.71 Authentication-Results: smtp.subspace.kernel.org; dmarc=fail (p=none dis=none) header.from=syzkaller.appspotmail.com Authentication-Results: smtp.subspace.kernel.org; spf=pass smtp.mailfrom=M3KW2WVRGUFZ5GODRSRYTGD7.apphosting.bounces.google.com Received: by mail-oa1-f71.google.com with SMTP id 586e51a60fabf-3fda5f60035so12088442fac.0 for ; Mon, 12 Jan 2026 08:36:49 -0800 (PST) X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20230601; t=1768235809; x=1768840609; h=to:from:subject:message-id:in-reply-to:date:mime-version :x-gm-message-state:from:to:cc:subject:date:message-id:reply-to; bh=V10L/zJOUVPTcusKybKbKKhP6nyxMzB+TqRLLUNp9Ik=; b=C4pN6nQGn+84YDCO2mnCM8NGXgysj0g9PPNMtz1yNmHVtD8eBcQkywffuXlzAVXszV 6RcqS2QU51vRzHIcSAPJDoVXj2tmKF7TiSHD/fR2oZNS75DKDPrnt29Bodj/qxxdLwOP lRuS3LAiaxq4u7hXFNxbsHxgVcDCA/QAM9O25w94AaJ8wPTl9E67MkJG2yhBrwN6ak4d 1Fj6e/R+C78urrQZVGZz0Ze33y0Fy4gzr7xLH/0J3mO4pHam97lxDsou6waw8l8qFza8 34ZFdao2XqwzmFh2PJQvo3Q/x2voG6A9lleIwiiY2TLqDDIbqU4MfTmyI5lJhwt/LaA9 Tu5g== X-Gm-Message-State: AOJu0Yxmatgvf0yXAlQgBF38K91W6q/a39OfTD5524S9buIbiOb0xSka XycIqNAJzMpo1C9FmA+7SRsZ5jrHRT9+Tg6lbuHvdrXldND6xF7Z/+HVM0BJIWXTWDPtb9Oyvfo YiDW6NrrPzJI48qwsp/0PjfwQCBCWWET6QrKgDdT0VNFpw3ZFQ4XzXuqzBcs= X-Google-Smtp-Source: AGHT+IFZh60MC4AWjMHIx/DXbYfzyvvdXdlCZ18gGq4Bi+KH1ImpBUkGf7KZnrR56wLfSKTvg5rE+hONkYooxbIGpPL0JHBQqqtJ Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 X-Received: by 2002:a05:6820:7511:b0:65d:c8e:8408 with SMTP id 006d021491bc7-65f54f5aba4mr6680026eaf.46.1768235808930; Mon, 12 Jan 2026 08:36:48 -0800 (PST) Date: Mon, 12 Jan 2026 08:36:48 -0800 In-Reply-To: <6960c2f0.050a0220.1c677c.03be.GAE@google.com> X-Google-Appengine-App-Id: s~syzkaller X-Google-Appengine-App-Id-Alias: syzkaller Message-ID: <69652320.050a0220.eaf7.00ba.GAE@google.com> Subject: Forwarded: [PATCH] mm, swap: fix cgroup V1 leak after removal of swap cache bypass From: syzbot To: linux-kernel@vger.kernel.org, syzkaller-bugs@googlegroups.com Content-Transfer-Encoding: quoted-printable Content-Type: text/plain; charset="utf-8" For archival purposes, forwarding an incoming command email to linux-kernel@vger.kernel.org, syzkaller-bugs@googlegroups.com. *** Subject: [PATCH] mm, swap: fix cgroup V1 leak after removal of swap cache b= ypass Author: ryncsn@gmail.com From: Kairui Song #syz test Recent patch is causing a memory cgruop V1 swap leak, this patch should fix that [1]. Link: https://lore.kernel.org/all/CAMgjq7CMsAMZZJL1=3Da=3DEtfWCOuDFE62RKR_0= hUdPC4H+QF5GfQ@mail.gmail.com/ [1] Reported-by: syzbot+d97580a8cceb9b03c13e@syzkaller.appspotmail.com Link: https://lore.kernel.org/all/6960c2f0.050a0220.1c677c.03be.GAE@google.= com/ Signed-off-by: Kairui Song --- mm/vmscan.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/mm/vmscan.c b/mm/vmscan.c index f35afc5093dc..a0e3f51de749 100644 --- a/mm/vmscan.c +++ b/mm/vmscan.c @@ -760,8 +760,8 @@ static int __remove_mapping(struct address_space *mappi= ng, struct folio *folio, =20 if (reclaimed && !mapping_exiting(mapping)) shadow =3D workingset_eviction(folio, target_memcg); - __swap_cache_del_folio(ci, folio, swap, shadow); memcg1_swapout(folio, swap); + __swap_cache_del_folio(ci, folio, swap, shadow); swap_cluster_unlock_irq(ci); } else { void (*free_folio)(struct folio *); --=20 2.52.0