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 5148CC001DF for ; Sun, 16 Jul 2023 00:15:24 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S229824AbjGPAPX (ORCPT ); Sat, 15 Jul 2023 20:15:23 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:39036 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S229819AbjGPAPS (ORCPT ); Sat, 15 Jul 2023 20:15:18 -0400 Received: from dfw.source.kernel.org (dfw.source.kernel.org [139.178.84.217]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 7A18D212E; Sat, 15 Jul 2023 17:15:17 -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 17C6460B9B; Sun, 16 Jul 2023 00:15:17 +0000 (UTC) Received: by smtp.kernel.org (Postfix) with ESMTPSA id 505A3C433C8; Sun, 16 Jul 2023 00:15:14 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1689466516; bh=0yILc+bANh026I06UBWabz1Zup8MksYUpsntgobli2o=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=ADnjw515pP16FV2I8lpnFC4dPNwxJnjxawWW2RJhS0BtI5ZRTMZllmD7yXzN4VKzp qtKiRpQ2iS/p2Td7bOzS+gDfGXZp2tNIPbkBfQpQoVgqlmsBMmH7ivEymtyQxhjo3N h/au2xs9HvGh2XUujZUC1hpYljDrdAYDm+e+OBigu+JgYbifOXbY5ozwg33xq2miOH hB1d2XJATM6/TW/eVtDcOO4x9IqTpzs75bsGlf0dJrMY3/g2/m5PxTCCygre0wLexf 1xMstyE4xarLBYldCA2GduHG22sby3niDx9Z4qWThaO3FrhbCnm4IbnXtY0mP2ghJQ w6A1WCUepkXEQ== 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 1/2] riscv: stack: Fixup independent irq stack for CONFIG_FRAME_POINTER=n Date: Sat, 15 Jul 2023 20:15:05 -0400 Message-Id: <20230716001506.3506041-2-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 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") Cc: stable@vger.kernel.org Reported-by: Zhangjin Wu Signed-off-by: Guo Ren Signed-off-by: Guo Ren --- arch/riscv/kernel/traps.c | 3 +++ 1 file changed, 3 insertions(+) diff --git a/arch/riscv/kernel/traps.c b/arch/riscv/kernel/traps.c index f910dfccbf5d..927347a19847 100644 --- a/arch/riscv/kernel/traps.c +++ b/arch/riscv/kernel/traps.c @@ -372,6 +372,9 @@ 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", +#ifndef CONFIG_FRAME_POINTER + "s0", +#endif "memory"); } else #endif -- 2.36.1