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=-8.8 required=3.0 tests=HEADER_FROM_DIFFERENT_DOMAINS, MAILING_LIST_MULTI,MENTIONS_GIT_HOSTING,SIGNED_OFF_BY,SPF_HELO_NONE,SPF_PASS 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 65833C43331 for ; Thu, 26 Mar 2020 12:28:12 +0000 (UTC) Received: from lists.ozlabs.org (lists.ozlabs.org [203.11.71.2]) (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 1FB342070A for ; Thu, 26 Mar 2020 12:28:12 +0000 (UTC) DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org 1FB342070A Authentication-Results: mail.kernel.org; dmarc=none (p=none dis=none) header.from=ellerman.id.au Authentication-Results: mail.kernel.org; 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 48p45P2xftzDqrs for ; Thu, 26 Mar 2020 23:28:09 +1100 (AEDT) Received: from ozlabs.org (bilbo.ozlabs.org [IPv6:2401:3900:2:1::2]) (using TLSv1.3 with cipher TLS_AES_256_GCM_SHA384 (256/256 bits) key-exchange X25519 server-signature RSA-PSS (2048 bits)) (No client certificate requested) by lists.ozlabs.org (Postfix) with ESMTPS id 48p3cY55JwzDqsR for ; Thu, 26 Mar 2020 23:06:37 +1100 (AEDT) Authentication-Results: lists.ozlabs.org; dmarc=none (p=none dis=none) header.from=ellerman.id.au Received: by ozlabs.org (Postfix) id 48p3cX5fl5z9sSK; Thu, 26 Mar 2020 23:06:36 +1100 (AEDT) Received: by ozlabs.org (Postfix, from userid 1034) id 48p3cX2lj3z9sRN; Thu, 26 Mar 2020 23:06:36 +1100 (AEDT) X-powerpc-patch-notification: thanks X-powerpc-patch-commit: a0968a025c04702427a4aee2c618f451a5098cd8 In-Reply-To: <20200304110402.6038-1-mpe@ellerman.id.au> To: Michael Ellerman , linuxppc-dev@ozlabs.org From: Michael Ellerman Subject: Re: [PATCH] selftests/powerpc: Add a test of sigreturn vs VDSO Message-Id: <48p3cX2lj3z9sRN@ozlabs.org> Date: Thu, 26 Mar 2020 23:06:35 +1100 (AEDT) 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: , Errors-To: linuxppc-dev-bounces+linuxppc-dev=archiver.kernel.org@lists.ozlabs.org Sender: "Linuxppc-dev" On Wed, 2020-03-04 at 11:04:02 UTC, Michael Ellerman wrote: > There's two different paths through the sigreturn code, depending on > whether the VDSO is mapped or not. We recently discovered a bug in the > unmapped case, because it's not commonly used these days. > > So add a test that sends itself a signal, then moves the VDSO, takes > another signal and finally unmaps the VDSO before sending itself > another signal. That tests the standard signal path, the code that > handles the VDSO being moved, and also the signal path in the case > where the VDSO is unmapped. > > Signed-off-by: Michael Ellerman Applied to powerpc next. https://git.kernel.org/powerpc/c/a0968a025c04702427a4aee2c618f451a5098cd8 cheers