From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from lindbergh.monkeyblade.net (lindbergh.monkeyblade.net [23.128.96.19]) (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 D11B67E; Wed, 15 Nov 2023 08:51:22 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=infradead.org header.i=@infradead.org header.b="H7M1Wp9m" Received: from desiato.infradead.org (desiato.infradead.org [IPv6:2001:8b0:10b:1:d65d:64ff:fe57:4e05]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 687C210D; Wed, 15 Nov 2023 00:51:19 -0800 (PST) DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=infradead.org; s=desiato.20200630; h=In-Reply-To:Content-Type:MIME-Version: References:Message-ID:Subject:Cc:To:From:Date:Sender:Reply-To: Content-Transfer-Encoding:Content-ID:Content-Description; bh=qSmi0veZCxUyGsLIdDPUXJ4vVHzrPiXaYm87kEuEwtw=; b=H7M1Wp9m2EXKmNVfz1TjHl0Sfm 3sgLP+KLvxQSv8VrApa0Ha95zjbV4jksXoU+aoNTtWHabtjPRj/jAHfxLFyuKeXmQV+Kin7xPSH+e V5P6tPpgx2f80QmPyXXrs3Gr0YhXN/qMlpJJT50c98eC7NyHoAqxAarnnQ6xF+fD5SY/ROM4SJtQ5 71iC7sMV7x2bo+JpGW5+2g17CsCK0SAN4OZ5P0K/6k0zSlNgDh2zwXvrTz8FeJ0R1yZRdtvSrh7QA +VcXPdzfkJR5o9AOC3bm2vgVygwJByx6x1OEYX7sQ+5K5Tv4tjnDXLYGxGJ9NMk6YK799S/emBPrn UswzkVuA==; Received: from j130084.upc-j.chello.nl ([24.132.130.84] helo=noisy.programming.kicks-ass.net) by desiato.infradead.org with esmtpsa (Exim 4.96 #2 (Red Hat Linux)) id 1r3Bbz-003rZz-1O; Wed, 15 Nov 2023 08:51:03 +0000 Received: by noisy.programming.kicks-ass.net (Postfix, from userid 1000) id 1C7903002BE; Wed, 15 Nov 2023 09:51:03 +0100 (CET) Date: Wed, 15 Nov 2023 09:51:02 +0100 From: Peter Zijlstra To: "Edgecombe, Rick P" Cc: "fweimer@redhat.com" , "xry111@xry111.site" , "andrealmeid@igalia.com" , "linux-api@vger.kernel.org" , "linux-mm@kvack.org" , "libc-alpha@sourceware.org" , "linux-kernel@vger.kernel.org" , "tglx@linutronix.de" , "linux-arch@vger.kernel.org" Subject: Re: Several tst-robust* tests time out with recent Linux kernel Message-ID: <20231115085102.GY3818@noisy.programming.kicks-ass.net> References: <4bda9f2e06512e375e045f9e72edb205104af19c.camel@xry111.site> <20231114153100.GY8262@noisy.programming.kicks-ass.net> <20231114154017.GI4779@noisy.programming.kicks-ass.net> <87ttpowajb.fsf@oldenburg.str.redhat.com> <20231114201402.GA25315@noisy.programming.kicks-ass.net> <822f3a867e5661ce61cea075a00ce04a4e4733f3.camel@intel.com> Precedence: bulk X-Mailing-List: linux-arch@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <822f3a867e5661ce61cea075a00ce04a4e4733f3.camel@intel.com> On Wed, Nov 15, 2023 at 01:11:20AM +0000, Edgecombe, Rick P wrote: > On Tue, 2023-11-14 at 21:14 +0100, Peter Zijlstra wrote: > > Urgh, thanks! > > > > Confirmed, the below cures things. Although I should probably make > > that > > FLAGS_SIZE_32 | FLAGS_SHARED against Linus' tree. > > > > Let me go do a proper patch. > > I saw these fail on the glibc shadow stack branch today, and I also saw > this one failing: > FAIL: nptl/tst-robustpi8 tip/locking/urgent (branch with the fix on) gets me: root@ivb-ep:/usr/local/src/glibc# ./build/nptl/tst-robustpi8 running child verifying locks running child verifying locks running child verifying locks running child verifying locks running child verifying locks root@ivb-ep:/usr/local/src/glibc# Which, to my untrained eye, looks like a pass to me.