From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from smtp.kernel.org (aws-us-west-2-korg-mail-1.web.codeaurora.org [10.30.226.201]) (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 DA9F62D5C74 for ; Fri, 20 Mar 2026 08:51:25 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=10.30.226.201 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1773996685; cv=none; b=lhZEoYdwHvhcwA1NoEu1pw0BmRRcLld1ZzfZWiU7zUwClO8dO2GMwHsvItRmOClGd8g7b2madfbOvF5WL0/JojEteh+4g/bFK3rgDEaiLTqgzQ9U3uwds6jXGLgE80AZumPdCi+fxV6IA0zrH8KB6yTHclnWoL7qc6O9d4CsV24= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1773996685; c=relaxed/simple; bh=2cmJaDcGV5vsJicOyCBU6iRdGEFK2TkLAzrSWjacRIA=; h=Subject:To:Cc:From:Date:Message-ID:MIME-Version:Content-Type; b=a6KpqQkUEu7kGAlnFA/+R1q7CyuQzpLS1mbSxh/8rNK4fMiZS/Dh3PkoNLBkcaMh2g/gAH1fb+MswcDvp87KdHASn5wt4vvcLsfMx4w6DZkZSO9o/cGVq/dEhr3klszHQ1SX0gBEmNkQN1vF52GACYbYleckTa/WF6EDuNaJNKY= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dkim=pass (1024-bit key) header.d=linuxfoundation.org header.i=@linuxfoundation.org header.b=Fu9Zo6sy; arc=none smtp.client-ip=10.30.226.201 Authentication-Results: smtp.subspace.kernel.org; dkim=pass (1024-bit key) header.d=linuxfoundation.org header.i=@linuxfoundation.org header.b="Fu9Zo6sy" Received: by smtp.kernel.org (Postfix) with ESMTPSA id 4C727C4CEF7; Fri, 20 Mar 2026 08:51:25 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=linuxfoundation.org; s=korg; t=1773996685; bh=2cmJaDcGV5vsJicOyCBU6iRdGEFK2TkLAzrSWjacRIA=; h=Subject:To:Cc:From:Date:From; b=Fu9Zo6syqbzd8JxWs3hPx2+jNWPB2utQeuJBYeBrwNuq6yX5d3kGT0dOUoYoqACT9 VEVGQAIVFPXFwj8QoXMI0Jrl2PTqnHfbRBPRVZ3c+ERSkMnL7zMTwmHiOLpyJTUB7n cv2Hh9RVq/hHBHnNJv6hkuSMJwmplu1M0Ux6C9MA= Subject: FAILED: patch "[PATCH] LoongArch: Check return values for set_memory_{rw,rox}" failed to apply to 5.15-stable tree To: yangtiezhu@loongson.cn,chenhuacai@loongson.cn Cc: From: Date: Fri, 20 Mar 2026 09:51:10 +0100 Message-ID: <2026032010-gleaming-other-e253@gregkh> Precedence: bulk X-Mailing-List: stable@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Type: text/plain; charset=ANSI_X3.4-1968 Content-Transfer-Encoding: 8bit The patch below does not apply to the 5.15-stable tree. If someone wants it applied there, or to any other stable or longterm tree, then please email the backport, including the original git commit id to . To reproduce the conflict and resubmit, you may use the following commands: git fetch https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git/ linux-5.15.y git checkout FETCH_HEAD git cherry-pick -x 431ce839dad66d0d56fb604785452c6a57409f35 # git commit -s git send-email --to '' --in-reply-to '2026032010-gleaming-other-e253@gregkh' --subject-prefix 'PATCH 5.15.y' HEAD^.. Possible dependencies: thanks, greg k-h ------------------ original commit in Linus's tree ------------------ >From 431ce839dad66d0d56fb604785452c6a57409f35 Mon Sep 17 00:00:00 2001 From: Tiezhu Yang Date: Mon, 16 Mar 2026 10:36:01 +0800 Subject: [PATCH] LoongArch: Check return values for set_memory_{rw,rox} set_memory_rw() and set_memory_rox() may fail, so we should check the return values and return immediately in larch_insn_text_copy(). Cc: stable@vger.kernel.org Signed-off-by: Tiezhu Yang Signed-off-by: Huacai Chen diff --git a/arch/loongarch/kernel/inst.c b/arch/loongarch/kernel/inst.c index 25fdb933119d..6c4ce6892276 100644 --- a/arch/loongarch/kernel/inst.c +++ b/arch/loongarch/kernel/inst.c @@ -258,6 +258,7 @@ static int text_copy_cb(void *data) int larch_insn_text_copy(void *dst, void *src, size_t len) { int ret = 0; + int err = 0; size_t start, end; struct insn_copy copy = { .dst = dst, @@ -275,9 +276,19 @@ int larch_insn_text_copy(void *dst, void *src, size_t len) start = round_down((size_t)dst, PAGE_SIZE); end = round_up((size_t)dst + len, PAGE_SIZE); - set_memory_rw(start, (end - start) / PAGE_SIZE); + err = set_memory_rw(start, (end - start) / PAGE_SIZE); + if (err) { + pr_info("%s: set_memory_rw() failed\n", __func__); + return err; + } + ret = stop_machine_cpuslocked(text_copy_cb, ©, cpu_online_mask); - set_memory_rox(start, (end - start) / PAGE_SIZE); + + err = set_memory_rox(start, (end - start) / PAGE_SIZE); + if (err) { + pr_info("%s: set_memory_rox() failed\n", __func__); + return err; + } return ret; }