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 X-Spam-Level: X-Spam-Status: No, score=-4.0 required=3.0 tests=DKIMWL_WL_HIGH,DKIM_SIGNED, DKIM_VALID,HEADER_FROM_DIFFERENT_DOMAINS,MAILING_LIST_MULTI,SIGNED_OFF_BY, SPF_PASS,URIBL_BLOCKED autolearn=ham autolearn_force=no version=3.4.0 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id 518E1C10F0E for ; Mon, 15 Apr 2019 12:16:08 +0000 (UTC) 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 mail.kernel.org (Postfix) with ESMTPS id 2162520645 for ; Mon, 15 Apr 2019 12:16:08 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=pass (2048-bit key) header.d=lists.infradead.org header.i=@lists.infradead.org header.b="Mw6fOzGA"; dkim=fail reason="signature verification failed" (1024-bit key) header.d=kernel.org header.i=@kernel.org header.b="V659ZK1U" DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org 2162520645 Authentication-Results: mail.kernel.org; dmarc=none (p=none dis=none) header.from=linuxfoundation.org Authentication-Results: mail.kernel.org; spf=none smtp.mailfrom=linux-riscv-bounces+infradead-linux-riscv=archiver.kernel.org@lists.infradead.org DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=lists.infradead.org; s=bombadil.20170209; h=Sender: Content-Transfer-Encoding:Content-Type:Cc:List-Subscribe:List-Help:List-Post: List-Archive:List-Unsubscribe:List-Id:MIME-Version:Message-ID:Date:From:To: Subject:Reply-To:Content-ID:Content-Description:Resent-Date:Resent-From: Resent-Sender:Resent-To:Resent-Cc:Resent-Message-ID:In-Reply-To:References: List-Owner; bh=bGW3MYtgWDW2Z7eGs61Pl7k+rXlTwnYBrjdRsxab3MY=; b=Mw6fOzGAwl31VA 34aGEoEJXju+5BG8qdT65vdEjBZ+AUWhmrneKh0ulRzkErOxJp+1wOvAABc4lskJVRxKkmuhut53X cGZKHr3EDDTdZ1HTwITlKtu2y13QUpP8lY4e7cj5eA0dPE0kW/UFw2WBLGFrn1OfS54Rv97+flxa/ aaNKCj4ha1RpGZfBCGWq7LcEnfjI940koX4zs7gBKQB2v9d8+N3faqIA1v96d9lYogOAcbeW8F0DK GZYfjffLlEisMrpirTJTznbQC6WynwcXi+PUGnlbFfvfV2pMER8TvYMtppTdZcH7yMJhnQ0J9f4z5 lBXi1FigNtHl18C3N5gA==; Received: from localhost ([127.0.0.1] helo=bombadil.infradead.org) by bombadil.infradead.org with esmtp (Exim 4.90_1 #2 (Red Hat Linux)) id 1hG0Wp-0004BI-Jx; Mon, 15 Apr 2019 12:16:03 +0000 Received: from mail.kernel.org ([198.145.29.99]) by bombadil.infradead.org with esmtps (Exim 4.90_1 #2 (Red Hat Linux)) id 1hG0WM-0003cN-OZ for linux-riscv@lists.infradead.org; Mon, 15 Apr 2019 12:15:45 +0000 Received: from localhost (83-86-89-107.cable.dynamic.v4.ziggo.nl [83.86.89.107]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by mail.kernel.org (Postfix) with ESMTPSA id E627B218D3; Mon, 15 Apr 2019 12:15:33 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=default; t=1555330534; bh=i98U/XTllCRphQh5oVhFu/+Q/bjEO+c6/eOK5j3jL+0=; h=Subject:To:Cc:From:Date:From; b=V659ZK1U2ikRrH8utBKx/Qhe1Jj4YatPL96rBzbeXnApG6O65ZFdDhvJDNVAf4JWl JWCHddqZY3IL+fRk4Za4U6TzozJQdijv6f0Rj4vOlCJbQZdd6Ns3kV6ygDZ0lUDkax 1rRBejIc+bi33aa91zm5Kox6GoqwqDWD8eZqSTy8= Subject: Patch "riscv: Fix syscall_get_arguments() and syscall_set_arguments()" has been added to the 5.0-stable tree To: 20190329171221.GA32456@altlinux.org, aou@eecs.berkeley.edu, gregkh@linuxfoundation.org, keescook@chromium.org, ldv@altlinux.org, linux-riscv@lists.infradead.org, luto@amacapital.net, mingo@redhat.com, palmer@sifive.com, rostedt@goodmis.org, wad@chromium.org From: Date: Mon, 15 Apr 2019 14:14:54 +0200 Message-ID: <1555330494148141@kroah.com> MIME-Version: 1.0 X-stable: commit X-Patchwork-Hint: ignore X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20190415_051535_299471_11F9E297 X-CRM114-Status: GOOD ( 10.53 ) X-BeenThere: linux-riscv@lists.infradead.org X-Mailman-Version: 2.1.21 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: stable-commits@vger.kernel.org Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit Sender: "linux-riscv" Errors-To: linux-riscv-bounces+infradead-linux-riscv=archiver.kernel.org@lists.infradead.org This is a note to let you know that I've just added the patch titled riscv: Fix syscall_get_arguments() and syscall_set_arguments() to the 5.0-stable tree which can be found at: http://www.kernel.org/git/?p=linux/kernel/git/stable/stable-queue.git;a=summary The filename of the patch is: riscv-fix-syscall_get_arguments-and-syscall_set_arguments.patch and it can be found in the queue-5.0 subdirectory. If you, or anyone else, feels it should not be added to the stable tree, please let know about it. >From 10a16997db3d99fc02c026cf2c6e6c670acafab0 Mon Sep 17 00:00:00 2001 From: "Dmitry V. Levin" Date: Fri, 29 Mar 2019 20:12:21 +0300 Subject: riscv: Fix syscall_get_arguments() and syscall_set_arguments() From: Dmitry V. Levin commit 10a16997db3d99fc02c026cf2c6e6c670acafab0 upstream. RISC-V syscall arguments are located in orig_a0,a1..a5 fields of struct pt_regs. Due to an off-by-one bug and a bug in pointer arithmetic syscall_get_arguments() was reading s3..s7 fields instead of a1..a5. Likewise, syscall_set_arguments() was writing s3..s7 fields instead of a1..a5. Link: http://lkml.kernel.org/r/20190329171221.GA32456@altlinux.org Fixes: e2c0cdfba7f69 ("RISC-V: User-facing API") Cc: Ingo Molnar Cc: Kees Cook Cc: Andy Lutomirski Cc: Will Drewry Cc: Albert Ou Cc: linux-riscv@lists.infradead.org Cc: stable@vger.kernel.org # v4.15+ Acked-by: Palmer Dabbelt Signed-off-by: Dmitry V. Levin Signed-off-by: Steven Rostedt (VMware) Signed-off-by: Greg Kroah-Hartman --- arch/riscv/include/asm/syscall.h | 12 +++++++----- 1 file changed, 7 insertions(+), 5 deletions(-) --- a/arch/riscv/include/asm/syscall.h +++ b/arch/riscv/include/asm/syscall.h @@ -79,10 +79,11 @@ static inline void syscall_get_arguments if (i == 0) { args[0] = regs->orig_a0; args++; - i++; n--; + } else { + i--; } - memcpy(args, ®s->a1 + i * sizeof(regs->a1), n * sizeof(args[0])); + memcpy(args, ®s->a1 + i, n * sizeof(args[0])); } static inline void syscall_set_arguments(struct task_struct *task, @@ -94,10 +95,11 @@ static inline void syscall_set_arguments if (i == 0) { regs->orig_a0 = args[0]; args++; - i++; n--; - } - memcpy(®s->a1 + i * sizeof(regs->a1), args, n * sizeof(regs->a0)); + } else { + i--; + } + memcpy(®s->a1 + i, args, n * sizeof(regs->a1)); } static inline int syscall_get_arch(void) Patches currently in stable-queue which might be from ldv@altlinux.org are queue-5.0/riscv-fix-syscall_get_arguments-and-syscall_set_arguments.patch _______________________________________________ linux-riscv mailing list linux-riscv@lists.infradead.org http://lists.infradead.org/mailman/listinfo/linux-riscv