From patchwork Sat Jul 15 13:45:51 2023 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Guo Ren X-Patchwork-Id: 13314483 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 bombadil.infradead.org (bombadil.infradead.org [198.137.202.133]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.lore.kernel.org (Postfix) with ESMTPS id 856B5C0015E for ; Sat, 15 Jul 2023 13:46:23 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=lists.infradead.org; s=bombadil.20210309; h=Sender: Content-Transfer-Encoding:Content-Type:List-Subscribe:List-Help:List-Post: List-Archive:List-Unsubscribe:List-Id:MIME-Version:References:In-Reply-To: Message-Id:Date:Subject:Cc:To:From:Reply-To:Content-ID:Content-Description: Resent-Date:Resent-From:Resent-Sender:Resent-To:Resent-Cc:Resent-Message-ID: List-Owner; bh=SO7PZ+tTti9TlQ6gPtiwMoRlI8Drzztb898Uq60GhKc=; b=zoblwdNcIafHXn tmLbhfuPhys30WY16GwaeMZj30s7TVBV/fd12dXh45o15vCVGJMCS/9DBb4bZ1TftwZB5/3QQi5Yu fWkK5PWDb0oF1nWvVueNNkXAcRe61wMwp1FkK4Rhswxv1FbefylvgSF8C/LbhvnQ8t8TkErFq6qeY Umd6/5UlnACMNiR7Epa/cab3Nq8UX9iF/7xjqW0fstkh/RFRZK+Gp/MoAjF7pCQHf4Ux3KYzFZ2VB CV6w+gQuImCR1j6osACVPxfiofZYYHFlP25wUGI4JCNfqe9vO1Aw9Pwbj+TAf/Sv0S9dlWRIqMhl2 HktTu8Eep1O5HpffLn3g==; Received: from localhost ([::1] helo=bombadil.infradead.org) by bombadil.infradead.org with esmtp (Exim 4.96 #2 (Red Hat Linux)) id 1qKfb7-008s6N-0Y; Sat, 15 Jul 2023 13:46:09 +0000 Received: from dfw.source.kernel.org ([139.178.84.217]) by bombadil.infradead.org with esmtps (Exim 4.96 #2 (Red Hat Linux)) id 1qKfb2-008s4h-2G for linux-riscv@lists.infradead.org; Sat, 15 Jul 2023 13:46:05 +0000 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 26A3360B86; 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-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20230715_064604_778544_8F463B20 X-CRM114-Status: GOOD ( 10.44 ) X-BeenThere: linux-riscv@lists.infradead.org X-Mailman-Version: 2.1.34 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Sender: "linux-riscv" Errors-To: linux-riscv-bounces+linux-riscv=archiver.kernel.org@lists.infradead.org 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