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spf=pass smtp.mailfrom=linuxppc-dev-bounces+linuxppc-dev=archiver.kernel.org@lists.ozlabs.org Received: from lists.ozlabs.org (lists.ozlabs.org [IPv6:2401:3900:2:1::3]) by lists.ozlabs.org (Postfix) with ESMTP id 43bBJj27hPzDqm9 for ; Fri, 11 Jan 2019 03:28:53 +1100 (AEDT) Authentication-Results: lists.ozlabs.org; spf=none (mailfrom) smtp.mailfrom=arndb.de (client-ip=217.72.192.73; helo=mout.kundenserver.de; envelope-from=arnd@arndb.de; receiver=) Authentication-Results: lists.ozlabs.org; dmarc=none (p=none dis=none) header.from=arndb.de Received: from mout.kundenserver.de (mout.kundenserver.de [217.72.192.73]) (using TLSv1.2 with cipher ECDHE-RSA-AES128-GCM-SHA256 (128/128 bits)) (No client certificate requested) by lists.ozlabs.org (Postfix) with ESMTPS id 43bBG05ldlzDqHR for ; Fri, 11 Jan 2019 03:26:32 +1100 (AEDT) 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 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 Content-Transfer-Encoding: 8bit X-Provags-ID: V03:K1:NTeLC7MR2Bco8KMPQbeHemq+c8XkDiSkrQwrov4uU0Z2HIvLK3h B70xuWmOCA+GgP9GbJW06L0FSoky+iyRXiPQtor05zQnX3nSWgbCFexomF8JWeeFg3drH3y rXvQCh8Qq2yvqHXdwWp+IqlKijE958CWOwGDX5zrvh45L7DSmguLRjdatci2FIWThGOBeMO 7Grv+aoRjg5U7DHRIfGJA== 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== X-BeenThere: linuxppc-dev@lists.ozlabs.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: Linux on PowerPC Developers Mail List List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: dalias@libc.org, linux-ia64@vger.kernel.org, linux-sh@vger.kernel.org, catalin.marinas@arm.com, will.deacon@arm.com, linux@dominikbrodowski.net, jcmvbkbc@gmail.com, deepa.kernel@gmail.com, hpa@zytor.com, sparclinux@vger.kernel.org, linux-s390@vger.kernel.org, dave@stgolabs.net, deller@gmx.de, x86@kernel.org, linux@armlinux.org.uk, mingo@redhat.com, geert@linux-m68k.org, firoz.khan@linaro.org, mattst88@gmail.com, fenghua.yu@intel.com, Arnd Bergmann , heiko.carstens@de.ibm.com, linux-m68k@lists.linux-m68k.org, ink@jurassic.park.msu.ru, luto@kernel.org, tglx@linutronix.de, linux-arm-kernel@lists.infradead.org, monstr@monstr.eu, tony.luck@intel.com, linux-parisc@vger.kernel.org, linux-mips@vger.kernel.org, stable@vger.kernel.org, paul.burton@mips.com, ebiederm@xmission.com, linux-alpha@vger.kernel.org, schwidefsky@de.ibm.com, akpm@linux-foundation.org, linuxppc-dev@lists.ozlabs.org, davem@davemloft.net Errors-To: linuxppc-dev-bounces+linuxppc-dev=archiver.kernel.org@lists.ozlabs.org Sender: "Linuxppc-dev" 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(+) 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 -- 2.20.0