From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from smtp.kernel.org (aws-us-west-2-korg-mail-alma10-1.taild15c8.ts.net [100.103.45.18]) (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 1BFBE3B1EF1; Fri, 10 Jul 2026 21:03:39 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=100.103.45.18 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1783717420; cv=none; b=VNC1ctWAhGXgw3k2krQcOM/mCQi487qycs5Nh/jmyDeo4y0eHnbGb7Rdw9T9t4hm4UWVz1Dh6/AL6E+ESbn9mxWR6j335swBraESk1UssMh2gtmBY9fONCm64mxooivRJh62PMyxpw11sRXFnLC8l3cNsyQlL72LmJDuYRlpzD8= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1783717420; c=relaxed/simple; bh=GbvMHZrhRDmOQztmKZrutuz12wBZDa9HQp9ssMvXPCE=; h=From:To:Cc:Subject:Date:Message-ID:In-Reply-To:References: MIME-Version; b=nRc9rcE8b6S7kLbAebfgujze+48WI78ysVbU7fV1ejHEnN3JYWO0VjdiMDxTs9QB1e3OJuCNQvoK8Kt7tYYZlAYgn1lchvsnPUPum6sTLNwlKLqNXVNEQ/+xcEzqVJXyNdipvaLgRXfY9Ruxrtcba8lrVuWvMd0MgqqcKtEUaSg= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org header.b=PqkovEHB; arc=none smtp.client-ip=100.103.45.18 Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org header.b="PqkovEHB" Received: by smtp.kernel.org (Postfix) with ESMTPSA id DDF951F00A3D; Fri, 10 Jul 2026 21:03:36 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=kernel.org; s=k20260515; t=1783717419; bh=80whcJasJ8UZ+ghvImoI8kqyUMJlafpf2qxBVaC3ewg=; h=From:To:Cc:Subject:Date:In-Reply-To:References; b=PqkovEHBiVYdGh7U8mht2uMdE9W9ex8yIgoKH8UQG/wNa27iptoJFbTMiVUws/s8C GjH8BqhOzqgIbTgxSl065QCqubEWG7PCS/h99oZJ/47YGlh1oUoBrSH0PbFKh5KeYJ hwZ2htPN7k8MqKd7Nsg7FWkssqQVYTvQIaEwLTpWf5vXBd1FT0rcZk5B/mp5/53nUt 0aeRNp6U+92+o2jAdeAx2l3D8wTFh1NglwapztkHmxsRghy8yQL+ldVfQzU1BCqLWF 2Bz1CY5HK9Y8v78eveW864WdFxcsrThx3vCPMie3pELQlPOaGD2XvKAfwSbt+K1XeG +0S69Fj++wo9Q== From: Sasha Levin To: Greg Kroah-Hartman , stable@vger.kernel.org Cc: Sasha Levin , patches@lists.linux.dev, linux-kernel@vger.kernel.org, torvalds@linux-foundation.org, akpm@linux-foundation.org, linux@roeck-us.net, shuah@kernel.org, patches@kernelci.org, lkft-triage@lists.linaro.org, pavel@nabladev.com, jonathanh@nvidia.com, sudipm.mukherjee@gmail.com, rwarsow@gmx.de, conor@kernel.org, hargar@microsoft.com, broonie@kernel.org, achill@achill.org, sr@sladewatkins.com, Florian Fainelli , Jonas Jelonek , linux-mips@vger.kernel.org Subject: Re: [PATCH 6.6 000/175] 6.6.144-rc1 review Date: Fri, 10 Jul 2026 17:03:09 -0400 Message-ID: <20260710163023.agent5-0013@kernel.org> X-Mailer: git-send-email 2.53.0 In-Reply-To: <34b7e26f-df63-4523-b4d2-5de13c192a8c@gmail.com> References: <20260702155115.766838875@linuxfoundation.org> <34b7e26f-df63-4523-b4d2-5de13c192a8c@gmail.com> Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Transfer-Encoding: 8bit On Thu, Jul 09, 2026 at 11:45:14AM +0200, Florian Fainelli wrote: > On ARCH_BRCMSTB using 32-bit and 64-bit ARM kernels, same build failure > as 6.1 for MIPS: > > arch/mips/kernel/smp.c: In function 'stop_this_cpu': > arch/mips/kernel/smp.c:396:2: error: implicit declaration of function > 'rcutree_report_cpu_dead'; did you mean 'rcutree_prepare_cpu'? > [-Werror=implicit-function-declaration] > rcutree_report_cpu_dead(); > ^~~~~~~~~~~~~~~~~~~~~~~ > rcutree_prepare_cpu The offending backport was dropped before 6.6.144 was released, so the build failure itself is gone. That still leaves 6.6.y and 6.1.y without 9f3f3bdc6d9d ("MIPS: smp: report dying CPU to RCU in stop_this_cpu()") while both trees already ship 91840be8f710 ("irq_work: Fix use-after-free in irq_work_single() on PREEMPT_RT"), which is what exposes the MIPS reboot hang that 9f3f3bdc6d9d fixes. Jonas, could you send backports of 9f3f3bdc6d9d for 6.6.y and 6.1.y with that adaptation? I'd rather take the author's version than adapt it here. -- Thanks, Sasha