From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from smtp.kernel.org (aws-us-west-2-korg-mail-1.web.codeaurora.org [10.30.226.201]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id DB65263B8 for ; Mon, 20 Feb 2023 13:46:42 +0000 (UTC) Received: by smtp.kernel.org (Postfix) with ESMTPSA id 62D64C433D2; Mon, 20 Feb 2023 13:46:42 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=linuxfoundation.org; s=korg; t=1676900802; bh=KjnvU8TV+16xhI/CzbkkNmq7hVZIVDs1eAO4WcqRjK4=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=HODOkOMdjUkRMOjSsyyf8HLFNkTvzzrv/h6OgLnLFjWxK36dBvyVPHQTNkoBUbe0h GHQWgguFd3Q1P9pE6lMavAsw6sR86bRSbaimtLlYNO5UZt6PeHszg4mqkgcw8+qoCP +j1pdCNJBkg1wdDGWv7BA78NvyugA8xtCEBwAMXo= From: Greg Kroah-Hartman To: stable@vger.kernel.org Cc: Greg Kroah-Hartman , patches@lists.linux.dev, Helge Deller Subject: [PATCH 5.4 044/156] parisc: Wire up PTRACE_GETREGS/PTRACE_SETREGS for compat case Date: Mon, 20 Feb 2023 14:34:48 +0100 Message-Id: <20230220133604.206918719@linuxfoundation.org> X-Mailer: git-send-email 2.39.2 In-Reply-To: <20230220133602.515342638@linuxfoundation.org> References: <20230220133602.515342638@linuxfoundation.org> User-Agent: quilt/0.67 Precedence: bulk X-Mailing-List: patches@lists.linux.dev List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit From: Helge Deller commit 316f1f42b5cc1d95124c1f0387c867c1ba7b6d0e upstream. Wire up the missing ptrace requests PTRACE_GETREGS, PTRACE_SETREGS, PTRACE_GETFPREGS and PTRACE_SETFPREGS when running 32-bit applications on 64-bit kernels. Signed-off-by: Helge Deller Cc: stable@vger.kernel.org # 4.7+ Signed-off-by: Greg Kroah-Hartman --- arch/parisc/kernel/ptrace.c | 15 +++++++++++++-- 1 file changed, 13 insertions(+), 2 deletions(-) --- a/arch/parisc/kernel/ptrace.c +++ b/arch/parisc/kernel/ptrace.c @@ -128,6 +128,12 @@ long arch_ptrace(struct task_struct *chi unsigned long tmp; long ret = -EIO; + unsigned long user_regs_struct_size = sizeof(struct user_regs_struct); +#ifdef CONFIG_64BIT + if (is_compat_task()) + user_regs_struct_size /= 2; +#endif + switch (request) { /* Read the word at location addr in the USER area. For ptraced @@ -183,14 +189,14 @@ long arch_ptrace(struct task_struct *chi return copy_regset_to_user(child, task_user_regset_view(current), REGSET_GENERAL, - 0, sizeof(struct user_regs_struct), + 0, user_regs_struct_size, datap); case PTRACE_SETREGS: /* Set all gp regs in the child. */ return copy_regset_from_user(child, task_user_regset_view(current), REGSET_GENERAL, - 0, sizeof(struct user_regs_struct), + 0, user_regs_struct_size, datap); case PTRACE_GETFPREGS: /* Get the child FPU state. */ @@ -304,6 +310,11 @@ long compat_arch_ptrace(struct task_stru } } break; + case PTRACE_GETREGS: + case PTRACE_SETREGS: + case PTRACE_GETFPREGS: + case PTRACE_SETFPREGS: + return arch_ptrace(child, request, addr, data); default: ret = compat_ptrace_request(child, request, addr, data);