From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by smtp.lore.kernel.org (Postfix) with ESMTP id CC8FAC001DF for ; Sun, 16 Jul 2023 00:15:26 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S229852AbjGPAPX (ORCPT ); Sat, 15 Jul 2023 20:15:23 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:39042 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S229665AbjGPAPV (ORCPT ); Sat, 15 Jul 2023 20:15:21 -0400 Received: from dfw.source.kernel.org (dfw.source.kernel.org [IPv6:2604:1380:4641:c500::1]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 3BB612690; Sat, 15 Jul 2023 17:15:20 -0700 (PDT) Received: from smtp.kernel.org (relay.kernel.org [52.25.139.140]) (using TLSv1.3 with cipher TLS_AES_256_GCM_SHA384 (256/256 bits) key-exchange X25519 server-signature RSA-PSS (2048 bits)) (No client certificate requested) by dfw.source.kernel.org (Postfix) with ESMTPS id AAB0060B9B; Sun, 16 Jul 2023 00:15:19 +0000 (UTC) Received: by smtp.kernel.org (Postfix) with ESMTPSA id EB014C433CB; Sun, 16 Jul 2023 00:15:16 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1689466519; bh=E/jFfO+retDoLdPOyJc5wmE7Q3RkrIB4bLkvlh5cMyI=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=cXkVAhKOvak//vq4NvrYl/XxauhW+hxgcoEqlbfIhk5u6YsST3l0Y8/WwnaiRBB+N zoUDoiPMG1GzOnlMYnAdvJWdXPUCS9ewLprgn1W6oDd+rd9fFeZVgBkRaJioYAx7Gu aRNjFMp4gmIM3r7wtXqJbKfMMUFuvq9Kn8c7MaZmEbVgRZTzKfT3UMQemGnUKIPQ35 oiGi/2zjVxCy2JI8oSa90MiJENKU83yZAPbcZSWUiKdhTRnJzt+WM6Kv83e73bmMB0 s1UjLKbcd1E+cb4Qt502xDb7nhaYkeGEpdCnY5BOnLU3VGklJpW9TPMFUBa3ZRxHwK Su5ONNJ3QNw3w== From: guoren@kernel.org To: guoren@kernel.org, palmer@rivosinc.com, paul.walmsley@sifive.com, falcon@tinylab.org, bjorn@kernel.org, conor.dooley@microchip.com Cc: linux-arch@vger.kernel.org, linux-kernel@vger.kernel.org, linux-riscv@lists.infradead.org, stable@vger.kernel.org, Guo Ren Subject: [PATCH V2 2/2] riscv: stack: Fixup independent softirq stack for CONFIG_FRAME_POINTER=n Date: Sat, 15 Jul 2023 20:15:06 -0400 Message-Id: <20230716001506.3506041-3-guoren@kernel.org> X-Mailer: git-send-email 2.36.1 In-Reply-To: <20230716001506.3506041-1-guoren@kernel.org> References: <20230716001506.3506041-1-guoren@kernel.org> MIME-Version: 1.0 Content-Transfer-Encoding: 8bit Precedence: bulk List-ID: X-Mailing-List: linux-arch@vger.kernel.org From: Guo Ren The independent softirq stack uses s0 to save & restore sp, but s0 would be corrupted when CONFIG_FRAME_POINTER=n. So add s0 in the clobber list to fix the problem. Fixes: dd69d07a5a6c ("riscv: stack: Support HAVE_SOFTIRQ_ON_OWN_STACK") Cc: stable@vger.kernel.org Reported-by: Zhangjin Wu Signed-off-by: Guo Ren Signed-off-by: Guo Ren --- arch/riscv/kernel/irq.c | 3 +++ 1 file changed, 3 insertions(+) diff --git a/arch/riscv/kernel/irq.c b/arch/riscv/kernel/irq.c index d0577cc6a081..a8efa053c4a5 100644 --- a/arch/riscv/kernel/irq.c +++ b/arch/riscv/kernel/irq.c @@ -84,6 +84,9 @@ void do_softirq_own_stack(void) : [sp] "r" (sp) : "a0", "a1", "a2", "a3", "a4", "a5", "a6", "a7", "t0", "t1", "t2", "t3", "t4", "t5", "t6", +#ifndef CONFIG_FRAME_POINTER + "s0", +#endif "memory"); } else #endif -- 2.36.1