From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from mail-pf1-f172.google.com (mail-pf1-f172.google.com [209.85.210.172]) (using TLSv1.2 with cipher ECDHE-RSA-AES128-GCM-SHA256 (128/128 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id 3D01253E27 for ; Fri, 29 Mar 2024 04:46:47 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=209.85.210.172 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1711687608; cv=none; b=Ck6wqVozynPek8aDU6KZwEJolLNBNP0MUfQZCZh1aG+xwRQhUFF5jpFejUs+urwJaio4lrRKAtmSnZ6T2Zpy2ieXAFwQK6LjwnyyS4r8LQvmXKfvz/dZTpqQMcnw9ugZL24qsBVQQTIf9HqvWVEbbGO9/fbUlvdW+MrA3KLC/Gk= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1711687608; c=relaxed/simple; bh=tp04Tian2VbAgQyGkrhWqNwzdHeK/WyQhUL89J1WvPY=; h=From:To:Cc:Subject:Date:Message-Id:In-Reply-To:References: MIME-Version; b=T2wHa+VFu55PYDxXMf5MQcr84pXyJLZrD5TvQHn2SevVFzXN1q3T27tLup6Y7kqynLmjl/6z8prOAxj9rPecHADAZD1F5Tv0dyGBjMLJ2rGprIUZQdd5KjwrdrwR7Y8brt2xd2C5qWS+QqTyXREo2oT5jEl6ahkmQ/Zy1086bfQ= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dmarc=none (p=none dis=none) header.from=rivosinc.com; spf=pass smtp.mailfrom=rivosinc.com; dkim=pass (2048-bit key) header.d=rivosinc-com.20230601.gappssmtp.com header.i=@rivosinc-com.20230601.gappssmtp.com header.b=hSHHA9Ke; arc=none smtp.client-ip=209.85.210.172 Authentication-Results: smtp.subspace.kernel.org; dmarc=none (p=none dis=none) header.from=rivosinc.com Authentication-Results: smtp.subspace.kernel.org; spf=pass smtp.mailfrom=rivosinc.com Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=rivosinc-com.20230601.gappssmtp.com header.i=@rivosinc-com.20230601.gappssmtp.com header.b="hSHHA9Ke" Received: by mail-pf1-f172.google.com with SMTP id d2e1a72fcca58-6e6b22af648so2012842b3a.0 for ; Thu, 28 Mar 2024 21:46:47 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=rivosinc-com.20230601.gappssmtp.com; s=20230601; t=1711687606; x=1712292406; darn=vger.kernel.org; h=content-transfer-encoding:mime-version:references:in-reply-to :message-id:date:subject:cc:to:from:from:to:cc:subject:date :message-id:reply-to; bh=+jzaUmiaVJT+7AndpgdFUVtlaA8dH1VTGpl1Yp0ZHRo=; b=hSHHA9Ke2WuQz9S+0ugebZaQHaPdXUt9olJ+rrReaptyxKFNAvhkZEjvUyjaCjfSTf Pa6C8KDgRKeT9OKuNFagB4AC3OaKbZvn+Y+RKGy81yCBkxCDu1b+ngLgQ4AQm6nC2X5P JUApcOcjXOedWZeyg5iGD2MNnzVcDnU5KbrtgH8r5uaGfbom0ARX5Bp0FIcLiVo221kD T2wYs9HymvMf9vQMzYzVPQjm/KlvunLoTCemqDpvgIYKQLz5E0IeJxMxkituXNKNRnkl 0FzbWBftSF1BE/GNtT1P+Q3VLw7JrIJyD8dmmzOF+TsMc5CPERdXIF8FYcCycztqorHP cNWQ== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20230601; t=1711687606; x=1712292406; h=content-transfer-encoding:mime-version:references:in-reply-to :message-id:date:subject:cc:to:from:x-gm-message-state:from:to:cc :subject:date:message-id:reply-to; bh=+jzaUmiaVJT+7AndpgdFUVtlaA8dH1VTGpl1Yp0ZHRo=; b=DEyMIfRWkQhkFK23Ac7Q5rjqKergpdoI3p3Gg51zyhq3o2gkot++MHWz3H9tI66swC A5D/OtMTK5fgdSc4RR1L8eptuJqFAXCC0dkuuA5HCdevAFLQw2H0tTIpPiH46iue4Xut BkVzbC1z/+S2UVknH5fNC/7UrjHPwTEY6woyh9xn5Bld3rNvtZxuTnT7bfd93RtUcdyi FV/g3pDsohTRytNE5+HlkgKecEyeTX2S3TYLN8gvFEg/5/kcINtjrqU38UE8O2rs+unF N3w8i5v8oCDejjiLNjfUA/7TG3dkLBgHHvhK8StKCLhXzVm7a0K6TAyrCJQ7XXsMmf17 0WhA== X-Forwarded-Encrypted: i=1; AJvYcCXdOxDegrryP3GjX7cMwBx8QrPt0dkZWfU/YP/Zv2pmSQ1Hqhp/5PZDlRjRZv23xAOS+rfetU/gB5J96BulAVTFUUG0+C4YP8m6 X-Gm-Message-State: AOJu0YzzhRUj4tNCHT1RZ73IyY6ieQcAR5ulrbsH4vrQc+j+oZg30KbH 9/So9pSXhzfZhf7AUj5uWQfEAK0hmTLhXD75Mn5T/0hWz7NI3EWbScutUhbCT6s= X-Google-Smtp-Source: AGHT+IFw+iNT/fZ7ZDIngivJRJR8RkOVDCFWMSifsiSz96HEhcDTVYzJoolJ7eKeIz36X1Q6OzEzmg== X-Received: by 2002:a05:6a20:8414:b0:1a5:6c7a:a60b with SMTP id c20-20020a056a20841400b001a56c7aa60bmr1845203pzd.11.1711687606505; Thu, 28 Mar 2024 21:46:46 -0700 (PDT) Received: from debug.ba.rivosinc.com ([64.71.180.162]) by smtp.gmail.com with ESMTPSA id i18-20020aa78b52000000b006ea7e972947sm2217120pfd.130.2024.03.28.21.46.43 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Thu, 28 Mar 2024 21:46:46 -0700 (PDT) From: Deepak Gupta To: paul.walmsley@sifive.com, rick.p.edgecombe@intel.com, broonie@kernel.org, Szabolcs.Nagy@arm.com, kito.cheng@sifive.com, keescook@chromium.org, ajones@ventanamicro.com, conor.dooley@microchip.com, cleger@rivosinc.com, atishp@atishpatra.org, alex@ghiti.fr, bjorn@rivosinc.com, alexghiti@rivosinc.com, samuel.holland@sifive.com, palmer@sifive.com, conor@kernel.org, linux-doc@vger.kernel.org, linux-riscv@lists.infradead.org, linux-kernel@vger.kernel.org, devicetree@vger.kernel.org, linux-mm@kvack.org, linux-arch@vger.kernel.org, linux-kselftest@vger.kernel.org Cc: corbet@lwn.net, tech-j-ext@lists.risc-v.org, palmer@dabbelt.com, aou@eecs.berkeley.edu, robh+dt@kernel.org, krzysztof.kozlowski+dt@linaro.org, oleg@redhat.com, akpm@linux-foundation.org, arnd@arndb.de, ebiederm@xmission.com, Liam.Howlett@oracle.com, vbabka@suse.cz, lstoakes@gmail.com, shuah@kernel.org, brauner@kernel.org, debug@rivosinc.com, andy.chiu@sifive.com, jerry.shih@sifive.com, hankuan.chen@sifive.com, greentime.hu@sifive.com, evan@rivosinc.com, xiao.w.wang@intel.com, charlie@rivosinc.com, apatel@ventanamicro.com, mchitale@ventanamicro.com, dbarboza@ventanamicro.com, sameo@rivosinc.com, shikemeng@huaweicloud.com, willy@infradead.org, vincent.chen@sifive.com, guoren@kernel.org, samitolvanen@google.com, songshuaishuai@tinylab.org, gerg@kernel.org, heiko@sntech.de, bhe@redhat.com, jeeheng.sia@starfivetech.com, cyy@cyyself.name, maskray@google.com, ancientmodern4@gmail.com, mathis.salmen@matsal.de, cuiyunhui@bytedance.com, bgray@linux.ibm.com, mpe@ellerman.id.au, baruch@tkos.co.il, alx@kernel.org, david@redhat.com, catalin.marinas@arm.com, revest@chromium.org, josh@joshtriplett.org, shr@devkernel.io, deller@gmx.de, omosnace@redhat.com, ojeda@kernel.org, jhubbard@nvidia.com Subject: [PATCH v2 19/27] riscv/kernel: update __show_regs to print shadow stack register Date: Thu, 28 Mar 2024 21:44:51 -0700 Message-Id: <20240329044459.3990638-20-debug@rivosinc.com> X-Mailer: git-send-email 2.34.1 In-Reply-To: <20240329044459.3990638-1-debug@rivosinc.com> References: <20240329044459.3990638-1-debug@rivosinc.com> Precedence: bulk X-Mailing-List: linux-doc@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Transfer-Encoding: 8bit Updating __show_regs to print captured shadow stack pointer as well. On tasks where shadow stack is disabled, it'll simply print 0. Signed-off-by: Deepak Gupta --- arch/riscv/kernel/process.c | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-) diff --git a/arch/riscv/kernel/process.c b/arch/riscv/kernel/process.c index 105ceb8880c1..97c812753c9c 100644 --- a/arch/riscv/kernel/process.c +++ b/arch/riscv/kernel/process.c @@ -89,8 +89,8 @@ void __show_regs(struct pt_regs *regs) regs->s8, regs->s9, regs->s10); pr_cont(" s11: " REG_FMT " t3 : " REG_FMT " t4 : " REG_FMT "\n", regs->s11, regs->t3, regs->t4); - pr_cont(" t5 : " REG_FMT " t6 : " REG_FMT "\n", - regs->t5, regs->t6); + pr_cont(" t5 : " REG_FMT " t6 : " REG_FMT " ssp : " REG_FMT "\n", + regs->t5, regs->t6, get_active_shstk(current)); pr_cont("status: " REG_FMT " badaddr: " REG_FMT " cause: " REG_FMT "\n", regs->status, regs->badaddr, regs->cause); -- 2.43.2