From patchwork Thu Jan 10 16:24:31 2019 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Arnd Bergmann X-Patchwork-Id: 155211 Delivered-To: patch@linaro.org Received: by 2002:a02:48:0:0:0:0:0 with SMTP id 69csp2087890jaa; Thu, 10 Jan 2019 08:27:57 -0800 (PST) X-Google-Smtp-Source: ALg8bN77BKvZLWhakij0qsDOGRRwEGUEwfRFlSmBqbuGiPIGdQzVTYP6tPPzhnxaCw9acvIqnxSb X-Received: by 2002:a62:9111:: with SMTP id l17mr10824275pfe.200.1547137677897; Thu, 10 Jan 2019 08:27:57 -0800 (PST) ARC-Seal: i=1; a=rsa-sha256; t=1547137677; cv=none; d=google.com; s=arc-20160816; b=pAzZCNltucYqHeVDlUzCH4CoCPg4GmcvRyzO3JUwfdwsZhUdl3vOk0GCqKq4NvbaiF AnsHFQm4/zcnseNyZTPnkiOWfzRyEqk6NQNyZDAV94OlWD9vI4mcVpit9Kvwz1Pg4p9F NoOatLfrbirUKKiBH0zzAB5UovZbX4lcIPSCZCVGbK6DDmSPMaUYA3Bpf0+hXdO4Bg5a 70q699oMFfCFV4T/iQJuHICtiWHkp7SR5yRwPVPKDGvCLvb2AcL1G4G3+LWN9ajIsep4 iGUeb1uf63MCdTkd83mV/mIkx0S7J5G/zSEhILcMQozCeeARm0KSh+W2TM8W+0NtNkCE PeZA== ARC-Message-Signature: i=1; a=rsa-sha256; c=relaxed/relaxed; d=google.com; s=arc-20160816; h=list-id:precedence:sender:content-transfer-encoding:mime-version :references:in-reply-to:message-id:date:subject:cc:to:from; bh=LPpGjsk8G0vmlTmcmoiKRUgwiUOt+sG55nFPU2mdQxU=; b=Z4vwhOjz9SKOktLk+BN1FX3w+tmXrRxmBMFapm2ME+86RLLcR/WWA5AnRYpNbxlnhy FfZ11ITA1ZgiZpFi1sW+PzPzEG/TDuiYn3j944QOW6+Q+ArKvuGOKtHRwEwYBBzownUp UuKgtxEkSB9SQyjqecui9pC/7SqmR7eFAR3A3vMHV2717S3EXfU+d03JDB3widQ2YuDV ZtUV6KcgrDaFaguVIQTioEtFbOo0KxtqFCtZHwFLTi2P5iXFseIPIOEBZAXN4RTiV2Jl fG/F1i2evdHtB9QvPmOY44PjVnA8XH3mtEDbfPCupiNdjG2jrF2eEM6A7DOqFgWOZIHO 0OOg== ARC-Authentication-Results: i=1; mx.google.com; spf=pass (google.com: best guess record for domain of linux-kernel-owner@vger.kernel.org designates 209.132.180.67 as permitted sender) smtp.mailfrom=linux-kernel-owner@vger.kernel.org Return-Path: Received: from vger.kernel.org (vger.kernel.org. [209.132.180.67]) by mx.google.com with ESMTP id z19si34009929pfc.95.2019.01.10.08.27.57; Thu, 10 Jan 2019 08:27:57 -0800 (PST) Received-SPF: pass (google.com: best guess record for domain of linux-kernel-owner@vger.kernel.org designates 209.132.180.67 as permitted sender) client-ip=209.132.180.67; Authentication-Results: mx.google.com; spf=pass (google.com: best guess record for domain of linux-kernel-owner@vger.kernel.org designates 209.132.180.67 as permitted sender) smtp.mailfrom=linux-kernel-owner@vger.kernel.org Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1729391AbfAJQ1z (ORCPT + 31 others); Thu, 10 Jan 2019 11:27:55 -0500 Received: from mout.kundenserver.de ([217.72.192.73]:56733 "EHLO mout.kundenserver.de" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1729869AbfAJQ0W (ORCPT ); Thu, 10 Jan 2019 11:26:22 -0500 Received: from wuerfel.lan ([109.192.41.194]) by mrelayeu.kundenserver.de (mreue108 [212.227.15.145]) with ESMTPA (Nemesis) id 1N6KQZ-1hNB0I3voH-016iww; Thu, 10 Jan 2019 17:25:20 +0100 From: Arnd Bergmann To: y2038@lists.linaro.org, linux-api@vger.kernel.org, linux-kernel@vger.kernel.org Cc: Arnd Bergmann , ink@jurassic.park.msu.ru, mattst88@gmail.com, linux@armlinux.org.uk, catalin.marinas@arm.com, will.deacon@arm.com, tony.luck@intel.com, fenghua.yu@intel.com, geert@linux-m68k.org, monstr@monstr.eu, paul.burton@mips.com, deller@gmx.de, mpe@ellerman.id.au, schwidefsky@de.ibm.com, heiko.carstens@de.ibm.com, dalias@libc.org, davem@davemloft.net, luto@kernel.org, tglx@linutronix.de, mingo@redhat.com, hpa@zytor.com, x86@kernel.org, jcmvbkbc@gmail.com, firoz.khan@linaro.org, ebiederm@xmission.com, deepa.kernel@gmail.com, linux@dominikbrodowski.net, akpm@linux-foundation.org, dave@stgolabs.net, linux-alpha@vger.kernel.org, linux-arm-kernel@lists.infradead.org, linux-ia64@vger.kernel.org, linux-m68k@lists.linux-m68k.org, linux-mips@vger.kernel.org, linux-parisc@vger.kernel.org, linuxppc-dev@lists.ozlabs.org, linux-s390@vger.kernel.org, linux-sh@vger.kernel.org, sparclinux@vger.kernel.org, stable@vger.kernel.org Subject: [PATCH 11/15] mips: fix n32 compat_ipc_parse_version Date: Thu, 10 Jan 2019 17:24:31 +0100 Message-Id: <20190110162435.309262-12-arnd@arndb.de> X-Mailer: git-send-email 2.20.0 In-Reply-To: <20190110162435.309262-1-arnd@arndb.de> References: <20190110162435.309262-1-arnd@arndb.de> MIME-Version: 1.0 X-Provags-ID: V03:K1:NTeLC7MR2Bco8KMPQbeHemq+c8XkDiSkrQwrov4uU0Z2HIvLK3h B70xuWmOCA+GgP9GbJW06L0FSoky+iyRXiPQtor05zQnX3nSWgbCFexomF8JWeeFg3drH3y rXvQCh8Qq2yvqHXdwWp+IqlKijE958CWOwGDX5zrvh45L7DSmguLRjdatci2FIWThGOBeMO 7Grv+aoRjg5U7DHRIfGJA== X-Spam-Flag: NO X-UI-Out-Filterresults: notjunk:1; V03:K0:G9+dY9LvBJI=:bKGBCt806147bZ4SdhcCjz CjfhFmq62oMPvk12bhL/NPBuD+5FlocKRN+VDrlu+h+1YO7B5XMKs1rQ3bMyWXFjXtyrfVUmf ROFcBae7Gm7dn55/DbQjGxJB0kf9LN8M3r7dfpsX/llHt7fhXBWYwXxcBTsUfD0welfTav328 EDIRylUi4qTuCL5Iz1Nfi2GSWB4mXFvcQ3V2YCErrq9qaRl3dP0Xj/QHcw2UC5UHXD2RrZNun ajqDXU4WSW9wdw5rWh9WyppYeb+r8+uvy8qnSE4JZkaLcvMsJ4wyypUhZvpUSQX4QefATbLZd z51aUK8wUHE+2Egci+WDHRnqzes2wM5K6O/LXALHZJITLXvaigwteu6ieZqq10+GZdb3+ct8z czBjsXuimew+gJhrQLYucnaH0q1xO8HZpwXJus5JJIY7c7UipaP7g+Y4XOcfDevXN1QRC/PqW UDf3gCSIyz5BygoBlLNZlYIfD243aj1b2j7/b3cne1RchQTejvJtnWreir8CZpzVDssrP5t7p 2lbK8eWngwNVdCPotXiIUPbEC2XxM3avQAZj82p/+02ovqTGk11Z3iwL6txAojsEk31Q21+Ll 4yTnEhil5jv8i1KAoINI+qkfWyZbpyy5Xl8BgJBk/x1Zu7W4l6OI8S2bLKyO/j7NTkKOylmda UcIZbdDo1TJkxvo4XDfB2o6PCbxZ2+UvgAyNn37onfsy4lX/gDc7LwuqgrnG7rp7o4p0dybPS aALSWonHNDRdQhORpQPMx1dXI5BMScV7uDxMFw== Sender: linux-kernel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org While reading through the sysvipc implementation, I noticed that the n32 semctl/shmctl/msgctl system calls behave differently based on whether o32 support is enabled or not: Without o32, the IPC_64 flag passed by user space is rejected but calls without that flag get IPC_64 behavior. As far as I can tell, this was inadvertently changed by a cleanup patch but never noticed by anyone, possibly nobody has tried using sysvipc on n32 after linux-3.19. Change it back to the old behavior now. Fixes: 78aaf956ba3a ("MIPS: Compat: Fix build error if CONFIG_MIPS32_COMPAT but no compat ABI.") Cc: stable@vger.kernel.org Signed-off-by: Arnd Bergmann --- As stated above, this was only found by inspection, the patch is not tested. Please review accordingly. --- arch/mips/Kconfig | 1 + 1 file changed, 1 insertion(+) -- 2.20.0 diff --git a/arch/mips/Kconfig b/arch/mips/Kconfig index 787290781b8c..0d14f51d0002 100644 --- a/arch/mips/Kconfig +++ b/arch/mips/Kconfig @@ -3155,6 +3155,7 @@ config MIPS32_O32 config MIPS32_N32 bool "Kernel support for n32 binaries" depends on 64BIT + select ARCH_WANT_COMPAT_IPC_PARSE_VERSION select COMPAT select MIPS32_COMPAT select SYSVIPC_COMPAT if SYSVIPC