From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from smtp.kernel.org (aws-us-west-2-korg-mail-1.web.codeaurora.org [10.30.226.201]) (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 224EE30675C; Wed, 13 May 2026 15:24:14 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=10.30.226.201 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1778685855; cv=none; b=PrXIAcPjGKZ15K36TdJos4JpLr3Zzh1Y8pZVwACBqx+gnu1mszL9Q8SbKP67YdRY5SzacUmYsSlKqdpacqkf9ZEFB3qqx+jRRoja6AoJajMX8P3AQu06RS0WzlNl1UsEFrqTLhq1nVo1IV0wOeCYgIoYUbrgabeqYdxoVVh2JW4= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1778685855; c=relaxed/simple; bh=z/ROMN57zsJum37G7d9c4N7yUdv80iHQ/ETZTmXaTrs=; h=Date:From:To:Cc:Subject:Message-ID:References:MIME-Version: Content-Type:Content-Disposition:In-Reply-To; b=hluQlkLw78izjEo2w212C1I05R2gxXaS0fVetLFC7MCysAmaOgkANqytIL0QJdtuq7bknLgiN9dd7vuEBFY6Ymxx7o3FIDQ2caxV2HLtvzjiPRTy1LAhC41KJmj4rfpiK1u1crsMMz+OpWQq3P5IbuvB/o5mHVhh+nSMPYfUBlY= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dkim=pass (1024-bit key) header.d=linuxfoundation.org header.i=@linuxfoundation.org header.b=f/MEXwMH; arc=none smtp.client-ip=10.30.226.201 Authentication-Results: smtp.subspace.kernel.org; dkim=pass (1024-bit key) header.d=linuxfoundation.org header.i=@linuxfoundation.org header.b="f/MEXwMH" Received: by smtp.kernel.org (Postfix) with ESMTPSA id 5A5FEC2BCB3; Wed, 13 May 2026 15:24:14 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=linuxfoundation.org; s=korg; t=1778685854; bh=z/ROMN57zsJum37G7d9c4N7yUdv80iHQ/ETZTmXaTrs=; h=Date:From:To:Cc:Subject:References:In-Reply-To:From; b=f/MEXwMHiANgoHBAaRI55FX12SKFAhgWlGwrv43qrzEe65LvS7jT1pljwpzIX685L 26EZoAub8O3V6NlcJiKAO3ZGRIwraTc01I2gniaXq9ZsINKdRtZwE1znryg3jWRBFZ gwc2q7hMUNnkZfXVIsF73PXxvF8YfSiNvr3twRz0= Date: Wed, 13 May 2026 17:24:19 +0200 From: Greg Kroah-Hartman To: Andrea Righi Cc: Stephano Cetola , Jiri Slaby , stable@vger.kernel.org, patches@lists.linux.dev, Chris Mason , Tejun Heo Subject: Re: [PATCH 7.0 247/307] sched_ext: Skip tasks with stale task_rq in bypass_lb_cpu() Message-ID: <2026051344-thrower-kept-0a66@gregkh> References: <20260512173940.117428952@linuxfoundation.org> <20260512173945.338221208@linuxfoundation.org> <2f509cbf-f14f-4dfc-8ba9-d53dc10e0aad@kernel.org> <2026051301-tusk-parcel-15ee@gregkh> <67725402aaddb935a94d2cd751f317e6bb844654.camel@cetola.net> <2026051342-canon-apply-bf42@gregkh> Precedence: bulk X-Mailing-List: stable@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Type: text/plain; charset=iso-8859-1 Content-Disposition: inline Content-Transfer-Encoding: 8bit In-Reply-To: On Wed, May 13, 2026 at 05:11:20PM +0200, Andrea Righi wrote: > Hi Greg, > > On Wed, May 13, 2026 at 04:56:56PM +0200, Greg Kroah-Hartman wrote: > > On Wed, May 13, 2026 at 07:39:22AM -0700, Stephano Cetola wrote: > > > On Wed, 2026-05-13 at 13:58 +0200, Greg Kroah-Hartman wrote: > > > > > > > > This is odd that it doesn't show up in my test builds/runs.  I'll go > > > > drop this now, and push out a -rc2, thanks! > > > > > > > > greg k-h > > > > > > One of my build machines was able to build 7.0.7_rc1 successfully. The > > > only difference I see is that it does not have: > > > CONFIG_SCHED_CLASS_EXT=y > > > > Which somehow doesn't get enabled with `make allmodconfig` :( > > Do you have DEBUG_INFO_BTF disabled? Yup. > I think allmodconfig selects CONFIG_DEBUG_INFO_NONE=y => CONFIG_DEBUG_INFO_BTF=n > => CONFIG_SCHED_CLASS_EXT=n, because: > > config SCHED_CLASS_EXT > ... > depends on BPF_SYSCALL && BPF_JIT && DEBUG_INFO_BTF Probably, anyway, that's why my 'allmodconfig' builds did not catch this, and my "build a sane kernel that can boot" builds also did not. thanks, greg k-h