Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1755366AbXABQjb (ORCPT ); Tue, 2 Jan 2007 11:39:31 -0500 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S1755373AbXABQjb (ORCPT ); Tue, 2 Jan 2007 11:39:31 -0500 Received: from caramon.arm.linux.org.uk ([217.147.92.249]:2988 "EHLO caramon.arm.linux.org.uk" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1755366AbXABQja (ORCPT ); Tue, 2 Jan 2007 11:39:30 -0500 Date: Tue, 2 Jan 2007 16:39:23 +0000 From: Russell King To: Linux Kernel List , Linus Torvalds Subject: [ARM] Regression somewhere between 2.6.19 and 2.6.19-rc1 Message-ID: <20070102163923.GB12902@flint.arm.linux.org.uk> Mail-Followup-To: Linux Kernel List , Linus Torvalds Mime-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline User-Agent: Mutt/1.4.2.1i Sender: linux-kernel-owner@vger.kernel.org X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 1600 Lines: 39 I'm seeing utterly random behaviour from kernels on ARM SMP hardware built after 2.6.19. I won't bother trying to paste the kernel output; sometimes the kernel locks solid (no IRQs, no output to say what's wrong). Other times I get the first line of an oops repeating but with random addresses. Othertimes the oops doesn't complete. 2.6.19 runs fine. So I just tried using git bisect to track down the problem. First issue that presky cmpxchg() causing a build error. Ok, so I provide a version to get around that. Next problem: fs/proc/proc_misc.c: In function `version_read_proc': fs/proc/proc_misc.c:256: warning: implicit declaration of function `utsname' fs/proc/proc_misc.c:256: error: invalid type argument of `->' fs/proc/proc_misc.c:256: error: invalid type argument of `->' make[3]: *** [fs/proc/proc_misc.o] Error 1 make[2]: *** [fs/proc] Error 2 make[1]: *** [fs] Error 2 make: *** [uImage] Error 2 It seems this breakage seems to have been introduced some 260-odd commits prior to the point which git bisect wants me to test. How do I tell git bisect "I can't test this, this is neither good nor bad, please choose another to try" ? Or is git bisect hopeless given the large amount of unbuildable commits thanks to our weekly merges? -- Russell King Linux kernel 2.6 ARM Linux - http://www.arm.linux.org.uk/ maintainer of: - To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/