From nobody Thu Oct 2 18:03:26 2025 Received: from mail-il1-f200.google.com (mail-il1-f200.google.com [209.85.166.200]) (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 2787E1A23BE for ; Sat, 13 Sep 2025 07:36:08 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=209.85.166.200 ARC-Seal: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1757748970; cv=none; b=OBQCE9aGnYXF1KWDWscVkQfxsgGbMpKgLRtunG4GErgHDZTB1KFi2lS0kLjcWVwKv8whw9QLN9om7/KgUXQyGcikAMyQfQTIgxsDXFNFgNDNM/0gesbS1hIryQxLtmaP+U0d3BEF3NoqfPApa8fEMUj2gvtCf/gKeDZO5MSGAZI= ARC-Message-Signature: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1757748970; c=relaxed/simple; bh=2C5qV/d0ko9TxMsLPa8nIqn+7K8XkQcrTCLfqvO1qzk=; h=MIME-Version:Date:In-Reply-To:Message-ID:Subject:From:To: Content-Type; b=a98+FSMR/yEoCsD4RXl89WfRd2OUZnqa3QKPAfI4oKTnIzOh9/1I/5pqfs0d7pnPfPv3gqNOV1FZV/pJrP/5g9V+QW8QZvEdcEzeBmkcRl1O/Lnmv+rUdm0qGRoeryojfai+oeef8aWoBeDWCg3VwMj9CvoFHoT2vEdqxvOKROo= 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=209.85.166.200 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-il1-f200.google.com with SMTP id e9e14a558f8ab-401eba8efecso37283635ab.1 for ; Sat, 13 Sep 2025 00:36:08 -0700 (PDT) X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20230601; t=1757748968; x=1758353768; 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=Sbpfr7EO0S0KvsoVRszztOQMrRz5i4KzMAXRhoLwBbs=; b=fAcYZBTKjoFqg/hwKIPeId6+VVHxotTCZWd8eQ8PANKzW0ufKvsoY7IILgN7BngJAM J7VGF2fZBMCorbebrTkncfh2ZEahBuwzWxV2kyzLK3rWuQtKOjFTJrMhMb08T+4mJWpz hWfGUk7XjZezgDVP8O/Rekf9eQqCkK+mNmpXOQZOWPNU/fEtQiX4cVbq+wq+PVDXpgqK 6JT/JC6OMj7ayKvhGruklVwNSIuLofi43P0L8ccjUq2OOWHXC6wGpSezyFmgs1Ox3y5M egIoYzWRYd8vJu5sUdzJqyEoJVGU5DwdnOua536jXsQt8A1w+XNFnUDjsfgjkQHNDumC GHMg== X-Gm-Message-State: AOJu0YzDkWkL39hxydtYKmczu5tyGmNDzRRe+KVWASobPBKQy5Qqhl0n ZpNe7bSe1fJg/wQ4f40ZwUHyKoXh7iL7CQNSIiICghN3N8kntK3IaxyuzQGci08fGqjeG70t6Ky Cnb0KyeLix9HfYotctwejkCwrWCwcYfr5y9MRXOKTijCDAqGirFRTLpHagvI= X-Google-Smtp-Source: AGHT+IEpPE8ezRL3EAuipZnOxqVaCaidPdO15kzSYV59AQGTqK5Mwg5hcOkOV7l7mEhBu9xRoTBnitkyqhWBQS/QT6+2vZIr8Ydy Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 X-Received: by 2002:a05:6e02:18c9:b0:420:11bf:d5e with SMTP id e9e14a558f8ab-420cabb6b81mr77188375ab.6.1757748968353; Sat, 13 Sep 2025 00:36:08 -0700 (PDT) Date: Sat, 13 Sep 2025 00:36:08 -0700 In-Reply-To: <68b87c9f.050a0220.3db4df.01fa.GAE@google.com> X-Google-Appengine-App-Id: s~syzkaller X-Google-Appengine-App-Id-Alias: syzkaller Message-ID: <68c51ee8.050a0220.2ff435.0370.GAE@google.com> Subject: Forwarded: [PATCH] x86/mm/pat: fix oob error 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] x86/mm/pat: fix oob error Author: chandna.linuxkernel@gmail.com Signed-off-by: Sahil Chandna --- arch/x86/mm/pat/set_memory.c | 3 +++ 1 file changed, 3 insertions(+) diff --git a/arch/x86/mm/pat/set_memory.c b/arch/x86/mm/pat/set_memory.c index 8834c76f91c9..944e6a912fc6 100644 #syz test --- a/arch/x86/mm/pat/set_memory.c +++ b/arch/x86/mm/pat/set_memory.c @@ -305,6 +305,9 @@ static inline unsigned long fix_addr(unsigned long addr) =20 static unsigned long __cpa_addr(struct cpa_data *cpa, unsigned long idx) { + if (WARN_ON_ONCE(!cpa->pages || !cpa->pages[idx])) + return 0; + if (cpa->flags & CPA_PAGES_ARRAY) { struct page *page =3D cpa->pages[idx]; =20 --=20 2.51.0