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[2620:137:e000::1:20]) by mx.google.com with ESMTP id e8-20020a056402088800b0051e196bf9ddsi11058777edy.375.2023.07.15.07.13.10; Sat, 15 Jul 2023 07:13:33 -0700 (PDT) Received-SPF: pass (google.com: domain of linux-kernel-owner@vger.kernel.org designates 2620:137:e000::1:20 as permitted sender) client-ip=2620:137:e000::1:20; Authentication-Results: mx.google.com; dkim=pass header.i=@kernel.org header.s=k20201202 header.b=t8RkxRTl; spf=pass (google.com: domain of linux-kernel-owner@vger.kernel.org designates 2620:137:e000::1:20 as permitted sender) smtp.mailfrom=linux-kernel-owner@vger.kernel.org; dmarc=pass (p=NONE sp=NONE dis=NONE) header.from=kernel.org Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S230070AbjGONqH (ORCPT + 99 others); Sat, 15 Jul 2023 09:46:07 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:34688 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S229930AbjGONqF (ORCPT ); Sat, 15 Jul 2023 09:46:05 -0400 Received: from dfw.source.kernel.org (dfw.source.kernel.org [139.178.84.217]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 95FF72700; Sat, 15 Jul 2023 06:46:04 -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 2C30C60B92; Sat, 15 Jul 2023 13:46:04 +0000 (UTC) Received: by smtp.kernel.org (Postfix) with ESMTPSA id 60112C433CB; Sat, 15 Jul 2023 13:46:01 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1689428763; bh=Z6IXikB2xTgV8aYzF3GbO/0brO1/H9AkrMucoZoD3Ik=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=t8RkxRTlJ15k4v+MjMu0jzuGCrNDCMTt5XSbdm+0/caeiQpPODQh7DnFoficDzxEX X/BOiOQC+KFSDvSpqnhC6RnWmhRprvJVMsqWD2u4IRO2yhNOPxWBhzBukbQw70tM5+ p11YHT1ZOLA+mrJu067BFoqLna4RAuUj2n02POOBVY8T6chyW9SkITux56S4UhD/wL Z9b5Hm2P/720IHBEe6Z6ODBtwSrM9nwiQ36InXVp445ngTUjx0SUF9y7Em+lJX5HDs WQANHaIl4RXLqfvhMFqUnAHWA//pEQXr2RI+62ADB4WPl/DKYzMMoe6H3wq6fJtxa7 2QOqTbUNK9X4w== 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 1/2] riscv: stack: Fixup independent irq stack for CONFIG_FRAME_POINTER=n Date: Sat, 15 Jul 2023 09:45:51 -0400 Message-Id: <20230715134552.3437933-2-guoren@kernel.org> X-Mailer: git-send-email 2.36.1 In-Reply-To: <20230715134552.3437933-1-guoren@kernel.org> References: <20230715134552.3437933-1-guoren@kernel.org> MIME-Version: 1.0 X-Spam-Status: No, score=-2.1 required=5.0 tests=BAYES_00,DKIMWL_WL_HIGH, DKIM_SIGNED,DKIM_VALID,DKIM_VALID_AU,DKIM_VALID_EF, RCVD_IN_DNSWL_BLOCKED,SPF_HELO_NONE,SPF_PASS,T_SCC_BODY_TEXT_LINE autolearn=ham autolearn_force=no version=3.4.6 X-Spam-Checker-Version: SpamAssassin 3.4.6 (2021-04-09) on lindbergh.monkeyblade.net Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org X-getmail-retrieved-from-mailbox: INBOX X-GMAIL-THRID: 1771496185441315632 X-GMAIL-MSGID: 1771496185441315632 From: Guo Ren The independent irq 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: 163e76cc6ef4 ("riscv: stack: Support HAVE_IRQ_EXIT_ON_IRQ_STACK") Reported-by: Zhangjin Wu Signed-off-by: Guo Ren Signed-off-by: Guo Ren --- arch/riscv/kernel/traps.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/arch/riscv/kernel/traps.c b/arch/riscv/kernel/traps.c index f910dfccbf5d..f75d97de518a 100644 --- a/arch/riscv/kernel/traps.c +++ b/arch/riscv/kernel/traps.c @@ -371,7 +371,7 @@ asmlinkage void noinstr do_irq(struct pt_regs *regs) : : [sp] "r" (sp), [regs] "r" (regs) : "a0", "a1", "a2", "a3", "a4", "a5", "a6", "a7", - "t0", "t1", "t2", "t3", "t4", "t5", "t6", + "t0", "t1", "t2", "t3", "t4", "t5", "t6", "s0", "memory"); } else #endif