From nobody Sun Oct 5 21:59:20 2025 Received: from foss.arm.com (foss.arm.com [217.140.110.172]) by smtp.subspace.kernel.org (Postfix) with ESMTP id B3D40101E6 for ; Tue, 29 Jul 2025 16:03:40 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=217.140.110.172 ARC-Seal: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1753805024; cv=none; b=T4gzKo3O578fTYexVyjT0wyr97XqU+6X6abuslTYuwcw9UlIJkFRq7uyjpglxoyLdoEV1jC3gdu1d4ftzMLH+D/eEUZSIOYeb7gZgJNtwFhTibGbgq1TSeQ5nw5MVQ6n97u2BvYTJPW+N39FJSymwkt+etMcZgjfrQZ5cudqPIE= ARC-Message-Signature: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1753805024; c=relaxed/simple; bh=JALDSuCHo6yW/v3LgSW8wFxn0wXqBjCTPFZyDX9BKUE=; h=Message-ID:Date:MIME-Version:To:Cc:From:Subject:Content-Type; b=p8UE+ENyOObvPR8NpabfKjmfA4wNXej5UrEugbb+meOJMg6tzJeC+j5b42tuCVhNRNsjpMuM9Ds2DUedmG1zvMe1Lwm+rYkQN/NQx0YehMo+9F/wagzBsFNyFaJXBYlMJphR7ArztTxnwieEf5sN1JCOv8+/IprPrJXotNGf4Nc= ARC-Authentication-Results: i=1; smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=arm.com; spf=pass smtp.mailfrom=arm.com; arc=none smtp.client-ip=217.140.110.172 Authentication-Results: smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=arm.com Authentication-Results: smtp.subspace.kernel.org; spf=pass smtp.mailfrom=arm.com Received: from usa-sjc-imap-foss1.foss.arm.com (unknown [10.121.207.14]) by usa-sjc-mx-foss1.foss.arm.com (Postfix) with ESMTP id D541A113E; Tue, 29 Jul 2025 09:03:31 -0700 (PDT) Received: from [10.57.69.185] (unknown [10.57.69.185]) by usa-sjc-imap-foss1.foss.arm.com (Postfix) with ESMTPSA id 3222E3F5A1; Tue, 29 Jul 2025 09:03:38 -0700 (PDT) Message-ID: <0b8111c6-1b14-41dc-a674-14a6361992b3@arm.com> Date: Tue, 29 Jul 2025 17:03:36 +0100 Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 User-Agent: Mozilla Thunderbird Content-Language: en-US To: Tejun Heo , void@manifault.com, arighi@nvidia.com Cc: sched-ext@lists.linux.dev, "linux-kernel@vger.kernel.org" , Ingo Molnar , Peter Zijlstra From: Christian Loehle Subject: [PATCH] sched_ext: Mark scx_bpf_cpu_rq as NULL returnable Content-Transfer-Encoding: quoted-printable Content-Type: text/plain; charset="utf-8" scx_bpf_cpu_rq() obviously returns NULL on invalid cpu. Mark it as such. Cc: stable@vger.kernel.org Fixes: 6203ef73fa5c ("sched/ext: Add BPF function to fetch rq") Signed-off-by: Christian Loehle Acked-by: Andrea Righi --- kernel/sched/ext.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/kernel/sched/ext.c b/kernel/sched/ext.c index 7dd5cbcb7a06..b734f55f3318 100644 --- a/kernel/sched/ext.c +++ b/kernel/sched/ext.c @@ -7599,7 +7599,7 @@ BTF_ID_FLAGS(func, scx_bpf_get_online_cpumask, KF_ACQ= UIRE) BTF_ID_FLAGS(func, scx_bpf_put_cpumask, KF_RELEASE) BTF_ID_FLAGS(func, scx_bpf_task_running, KF_RCU) BTF_ID_FLAGS(func, scx_bpf_task_cpu, KF_RCU) -BTF_ID_FLAGS(func, scx_bpf_cpu_rq) +BTF_ID_FLAGS(func, scx_bpf_cpu_rq, KF_RET_NULL) #ifdef CONFIG_CGROUP_SCHED BTF_ID_FLAGS(func, scx_bpf_task_cgroup, KF_RCU | KF_ACQUIRE) #endif --=20 2.34.1