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 DC6D813E41A for ; Sat, 4 Jul 2026 00:54:28 +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=1783126469; cv=none; b=cKMs9L5zDWEOYLbxNCf2y30IxmOtLte3vm+k2Rw/qefGUilP85K1Barjs+DT8tTGcBmdMYrA0KufHly2xYiz4btZOTvslGAB5IAD4uKvJuIW3Hqkhw9omLfbmvP0CWNi7UZfUV0ClYqUUd7zsve05vYGSKBTr1Qq6fE+Yg3TmUg= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1783126469; c=relaxed/simple; bh=KP7OqOlEjGQOhIjncSTbFcm/g1hHrPgublMIb+VjjGs=; h=Date:Message-ID:From:To:Cc:Subject:In-Reply-To:References; b=XwGJOyMjdUtYwCnawieIAravlSJ64PqJPi2AKrKPCS85K2/8Uje+xh91HRwVUdFODrCJaj9W3m5ZoM5hn4bMiy7Vu+d0OTOAVzGdEsXsZsgjNRNZRxrxqcfQZeM3foeDdVJU3xGA36rP5KF3K7QhGiuSTgfmhlLuM2aTx9x/kbI= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org header.b=noQbJkTi; 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="noQbJkTi" Received: by smtp.kernel.org (Postfix) with ESMTPSA id 910BD1F000E9; Sat, 4 Jul 2026 00:54:28 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=kernel.org; s=k20260515; t=1783126468; bh=KP7OqOlEjGQOhIjncSTbFcm/g1hHrPgublMIb+VjjGs=; h=Date:From:To:Cc:Subject:In-Reply-To:References; b=noQbJkTizh2XSECPLdy+Au9JoU6cKkcw/f+i6KEiGJOSInQIhGnHZulRpc+Fk+8l1 T7fYSE2YGwi27xYEIgGPoS1M68nCbVytcZVr6YfD9R4+c4ku6rlsuXT7iPMADfBZlU gak79Uoe+oVYug3gV06ONWeIFWty2UjTXWmtmxO9X2SjkAadAx8z9h1laQTGaTObGX CSziWVH5f/JtbTz809HWnyjsqUBemDyMpr9wNhLcFQifJRZ3XhnvUGbRtyJYiIsioR Nmz+O+8yfLOiRsvWvEY0+4wbtPhfeEhpqzuI8ThEeK3wiEuDQGQRisAfmpcUUD0YAO LWWKIFyNFcNVg== Date: Fri, 03 Jul 2026 14:54:27 -1000 Message-ID: <002ecceae2a2642f45bef803d5c5c8ff@kernel.org> From: Tejun Heo To: sashiko-bot@kernel.org Cc: sched-ext@lists.linux.dev Subject: Re: [PATCH sched_ext/for-7.3 16/32] sched_ext: Add per-shard cap delegation for sub-schedulers In-Reply-To: <20260703111746.4F07A1F000E9@smtp.kernel.org> References: <20260703080159.2314350-1-tj@kernel.org> <20260703080159.2314350-17-tj@kernel.org> <20260703111746.4F07A1F000E9@smtp.kernel.org> Precedence: bulk X-Mailing-List: sched-ext@lists.linux.dev List-Id: List-Subscribe: List-Unsubscribe: > [High] Partial allocation failure in `scx_alloc_pshards()` leaves the > `pshard` array exposed, causing a NULL pointer dereference if the BPF > `ops.exit` hook reads its own caps. v2 will free and NULL sch->pshard on a partial scx_alloc_pshards() failure, so the !pshard guard in scx_bpf_sub_caps() holds. Thanks.