From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from smtp.kernel.org (aws-us-west-2-korg-mail-alma10-1.taild15c8.ts.net [100.103.45.18]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id 0F4A4470459; Tue, 21 Jul 2026 19:53:12 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=100.103.45.18 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1784663593; cv=none; b=crRqSOFQ9s4lTsx43pKIkzTIWEUun81GZ5eySiPo/LjFZD3ei0U4cvjuukQeDZyTgvqIoffNICfzUcWdVLgyElX+PVtyoE0fdDJ392z1jcY6UTTdxxtkrjYevkYPpJfAZkh6K2m1wN/9hfBa4Nh8GpEYKGfggc2nvVor/hIqOlk= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1784663593; c=relaxed/simple; bh=TD7zXuk4xGQVL76na4erFi2l7TbNZWtxcmHTe5IztvA=; h=From:To:Cc:Subject:Date:Message-ID:In-Reply-To:References: MIME-Version; b=ERdmPESnB0V1JkJSSeAxj3mTwS/4Xxu3MoaOX8Os3ML7e1T1FsrQO51XnW3Cy0VpqrOpE1PwkjrNwb5c7IZidtOejHlTylUh8ihKiZLTk2pyrLancfthdk7tfBUX9mu81rKnT/Ly+MRczuQPdvyRfLZ7rTqtfV3ektmxneoYwiA= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dkim=pass (1024-bit key) header.d=linuxfoundation.org header.i=@linuxfoundation.org header.b=jXpXpBVI; arc=none smtp.client-ip=100.103.45.18 Authentication-Results: smtp.subspace.kernel.org; dkim=pass (1024-bit key) header.d=linuxfoundation.org header.i=@linuxfoundation.org header.b="jXpXpBVI" Received: by smtp.kernel.org (Postfix) with ESMTPSA id 753AC1F000E9; Tue, 21 Jul 2026 19:53:11 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=linuxfoundation.org; s=korg; t=1784663592; bh=uOwi78d/jyA1PSDFIdBMsJmfyWFybt1F8fABoDn11Bc=; h=From:To:Cc:Subject:Date:In-Reply-To:References; b=jXpXpBVI+RgxWNa/aMgw7Uvb9M2jqHNx70ZtwbBGZjRp5YEpxMuPrbX5j/mDQbjZe ksNrsj2veFjWDoIZhk/5ZaHU33VoxBIp+xeiCxsIofuHdmkiG7ZHFHVqe7HnRhYi14 s4HqJHtEygasnDT3GCRdlGEHn3N2sY3hniPi8Elc= From: Greg Kroah-Hartman To: stable@vger.kernel.org Cc: Greg Kroah-Hartman , patches@lists.linux.dev, Bibo Mao , Qiang Ma , Huacai Chen Subject: [PATCH 6.12 0828/1276] LoongArch: KVM: Check the return values for put_user() Date: Tue, 21 Jul 2026 17:21:11 +0200 Message-ID: <20260721152504.590942977@linuxfoundation.org> X-Mailer: git-send-email 2.55.0 In-Reply-To: <20260721152446.065700225@linuxfoundation.org> References: <20260721152446.065700225@linuxfoundation.org> User-Agent: quilt/0.69 X-stable: review X-Patchwork-Hint: ignore Precedence: bulk X-Mailing-List: patches@lists.linux.dev List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Transfer-Encoding: 8bit 6.12-stable review patch. If anyone has any objections, please let me know. ------------------ From: Qiang Ma commit fb89e0fe2dc4246c86ad0eb0fa2b7cb2f8ba9728 upstream. put_user() may return -EFAULT, so, when the user space address is invalid, the caller should return -EFAULT. Cc: stable@vger.kernel.org Reviewed-by: Bibo Mao Signed-off-by: Qiang Ma Signed-off-by: Huacai Chen Signed-off-by: Greg Kroah-Hartman --- arch/loongarch/kvm/vcpu.c | 3 ++- 1 file changed, 2 insertions(+), 1 deletion(-) --- a/arch/loongarch/kvm/vcpu.c +++ b/arch/loongarch/kvm/vcpu.c @@ -1029,7 +1029,8 @@ static int kvm_loongarch_cpucfg_get_attr return -ENXIO; } - put_user(val, uaddr); + if (put_user(val, uaddr)) + return -EFAULT; return ret; }