From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from casper.infradead.org (casper.infradead.org [90.155.50.34]) (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 11B0820322; Fri, 28 Nov 2025 09:34:39 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=90.155.50.34 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1764322481; cv=none; b=smepGoYfJoTg8JE11NBefBCDaYfawfeKVqkOqvSHuBlm0mRVyr2fx3P0G5rmm0LUDn7hz0oWKl2Ro5XUhhTEKa7jXIkOSO9OMyIJe/NjgCdFXdofHfu4aBCQCSSxT2Ec6HTUSoH6iNEzFLDUcAIus9rvHc+llm/dVpxwDVcJukk= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1764322481; c=relaxed/simple; bh=sAYXn5HwCtED/zCt46Rhx9dHHmYGpsPlTQbkW//Pwto=; h=Date:From:To:Cc:Subject:Message-ID:References:MIME-Version: Content-Type:Content-Disposition:In-Reply-To; b=aNYv85u4v1HFvzR9E7K4+JnOGAzHUnayCFFl2KbMYEvy32vtng1PS4Vhdd8QfA5m2dA5o9UzXd1niHB51G/DhQAEDvgIDF7jR3LTbe2vuIwbPeUsTsZY30TQZp7bJvPIHWDrRzGeGMXnu/lTgAkL6ghXpzXG1A4QS8oOPBaH4rg= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=infradead.org; spf=none smtp.mailfrom=infradead.org; dkim=pass (2048-bit key) header.d=infradead.org header.i=@infradead.org header.b=YjVEpoBl; arc=none smtp.client-ip=90.155.50.34 Authentication-Results: smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=infradead.org Authentication-Results: smtp.subspace.kernel.org; spf=none smtp.mailfrom=infradead.org Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=infradead.org header.i=@infradead.org header.b="YjVEpoBl" DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=infradead.org; s=casper.20170209; 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=Jr+07b0abE2YtvgNMr+5fwS5rMXxtHiKONye0iLaCR8=; b=YjVEpoBlIScvKMWiObSMXB/jC0 Xj6v1ar69o1ZLkAAaaN/5s/qInXn5Xij9L++5egvt3UHp0NOTqIxkrvnPSJdX7oEt/4OeZ4XvVX2x JBZkeg815SRNAWOnS/NYNQfdxtNeRPFDukdsAS3uWuUr9c/pjrcR+11YNx/tDK+3AwSqY5q9kp6rl I4BoV5/IzLaZo8QVbnnbxFroKmvGk6HJLB2U9kR6tfRwuayCgqkuQU2EHysYQzG/d/4NxbQBnXzSO Vh0h529AF0YvIi64RybtJql0hxpb+P/vYzNYf9QdNyG1pJIiiAh1SUXq4W8v3uj0MiDc8SdJZtJS9 +w4s+MGA==; Received: from 77-249-17-252.cable.dynamic.v4.ziggo.nl ([77.249.17.252] helo=noisy.programming.kicks-ass.net) by casper.infradead.org with esmtpsa (Exim 4.98.2 #2 (Red Hat Linux)) id 1vOus4-0000000D0jb-0BFw; Fri, 28 Nov 2025 09:34:32 +0000 Received: by noisy.programming.kicks-ass.net (Postfix, from userid 1000) id 81FE7300230; Fri, 28 Nov 2025 10:34:30 +0100 (CET) Date: Fri, 28 Nov 2025 10:34:30 +0100 From: Peter Zijlstra To: Oliver Sang Cc: Ingo Molnar , Tim Chen , oe-lkp@lists.linux.dev, lkp@intel.com, linux-kernel@vger.kernel.org, x86@kernel.org, Chen Yu , Vincent Guittot , Shrikanth Hegde , K Prateek Nayak , Srikar Dronamraju , Mohini Narkhede , aubrey.li@linux.intel.com Subject: Re: [tip:tmp.tmp] [sched/fair] eb2db043ab: BUG:kernel_NULL_pointer_dereference,address Message-ID: <20251128093430.GE3245006@noisy.programming.kicks-ass.net> References: <202511271605.bd46ddc3-lkp@intel.com> <20251127083815.GZ3245006@noisy.programming.kicks-ass.net> Precedence: bulk X-Mailing-List: linux-kernel@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: On Fri, Nov 28, 2025 at 09:42:04AM +0800, Oliver Sang wrote: > hi, > > On Thu, Nov 27, 2025 at 10:07:28AM +0100, Ingo Molnar wrote: > > > > * Peter Zijlstra wrote: > > > > > On Thu, Nov 27, 2025 at 04:35:37PM +0800, kernel test robot wrote: > > > > > > > > > > > > Hello, > > > > > > > > kernel test robot noticed "BUG:kernel_NULL_pointer_dereference,address" on: > > > > > > > > commit: eb2db043ab3a28ae76800f2a57e144420800d56d ("sched/fair: Skip sched_balance_running cmpxchg when balance is not due") > > > > https://git.kernel.org/cgit/linux/kernel/git/tip/tip.git tmp.tmp > > > > > > Not sure what this branch is, but tip/sched/core has the fixed commit. > > > > Not sure how the test-bot picked up this temporary > > branch and reported it despite it being gone from the > > repo, but the branch hasn't been in -tip for days. > > > > This report can be safely ignored. > > sorry for the noise. yeah, our so-called 'gitmirror' mechnism fetched the > tmp.tmp branch about 10 days ago, then it merged into our hourly kernel to > be running tests. so it's kind of 'stored' in our repo. > > since the bad commit caused crash issue on various test machines, we made out > the report, but missed the check of whether branch is still existing remotely. > > we will refine our code/process to avoid this kind of meaningless report. Might it make sense to exclude all branches named tmp ? IIRC there are some patterns that the robot skips over, but I forever forget what they are :/