From nobody Fri Oct 3 07:39:25 2025 Received: from mail-pf1-f171.google.com (mail-pf1-f171.google.com [209.85.210.171]) (using TLSv1.2 with cipher ECDHE-RSA-AES128-GCM-SHA256 (128/128 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id 8C303362093 for ; Wed, 3 Sep 2025 19:21:40 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=209.85.210.171 ARC-Seal: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1756927302; cv=none; b=W6NnGInhosb0EspndUe+JPmuwRnxzgBuIidxrV8M4y2C803057BmuQhnl3OYepCMR4FxDdWQmuttqw449399VJRWrVwWNuq6/UYGnPiXpB+yPoMa2vU6xYRzSNDUgWXRXsJncioRMXg5wHXSSt8U981L0t2w1u5afBo6hY1mh/Y= ARC-Message-Signature: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1756927302; c=relaxed/simple; bh=FD8F5bgARtC6YI1MwhdaCFAJugS/OZVdoGBcoorXEJw=; h=From:To:Subject:Date:Message-ID:MIME-Version; b=mg7EkRxqm6eM6ISAYrjHbrypG13dNLnhUVBlgORbs48GfunA51Ah1hRVkcdN518KXbX1N+GAaDs4f4iMHBw6D2QSC2fhncPh1Jz/I16Uy/iNxkXpWnxLLi2oPBxyBwgASjoUiFs0X7iS1b15CKrTo4gDSRzaHeGo2xZYeNDWGWo= ARC-Authentication-Results: i=1; smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=gmail.com; spf=pass smtp.mailfrom=gmail.com; dkim=pass (2048-bit key) header.d=gmail.com header.i=@gmail.com header.b=Ktdeg0io; arc=none smtp.client-ip=209.85.210.171 Authentication-Results: smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=gmail.com Authentication-Results: smtp.subspace.kernel.org; spf=pass smtp.mailfrom=gmail.com Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=gmail.com header.i=@gmail.com header.b="Ktdeg0io" Received: by mail-pf1-f171.google.com with SMTP id d2e1a72fcca58-77251d7cca6so245033b3a.3 for ; Wed, 03 Sep 2025 12:21:40 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20230601; t=1756927300; x=1757532100; darn=vger.kernel.org; h=content-transfer-encoding:mime-version:message-id:date:subject:to :from:from:to:cc:subject:date:message-id:reply-to; bh=DBIcDNX+xCHFfbh4zBaxGqDtwHNN/sHrxYwH+z/LwHU=; b=Ktdeg0ioXtX5dx7KgQpW7iRmfdHKjocB2YAvg665xeNjDpmmjDA1pPHI/63P+j5YNe jH9qosTvDp++v1pXOM+3ytpLCNOAaaoVoSDcfPRzuilQJVMIGhrTStjTFRn7ICe3/kQL SIS15G6/e71hEko0wMIOKuWG9sfz5LnAWSOB5vU35GzAV20MDjq9UhdDRRs9AwNm//yx ItiPKeWiZk1SphD9Lq6QeaaptAV9v43zZAZjzBw4N5Pc+cUv4wZT+tqA8znu/gv4qWka CatGbG1bSALoBn0uX57IFMbcxdFqHii7mq0ok5yQZdKLnOElRcAP380gnQs9Y8Rq+qmb 71gg== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20230601; t=1756927300; x=1757532100; h=content-transfer-encoding:mime-version:message-id:date:subject:to :from:x-gm-message-state:from:to:cc:subject:date:message-id:reply-to; bh=DBIcDNX+xCHFfbh4zBaxGqDtwHNN/sHrxYwH+z/LwHU=; b=r3OloAwH7hBeXPTJ5LSWcC1lKo/Uf2Nqv306nU1ijvuqrHjrNmsTsu347HphKWgAEs TsSPUgpCQHnsBLSNkYNTZKiUb2S3pmycDGOIc18dcRYMozTPmBJzQVe6WHsu9RRPxWcn 7N3TpbqHWStlzjHtEzdl+ghBbVQFNg/+JFcneuom120ncPXy911Zhz0XorTDPfwo+b2o dTY9ZeTO6B2TIdHvtoAi9A/SRfmj0he3hqJ+y+svpZseS14nIxlOs1gzTtct7HAG7sIu C6AUz6Req4YoobqTQ05FQgqJ5OiiR9BwboOcaTo2c34quNNbstNLQi0vNbM1kOhYqkmg kYTA== X-Forwarded-Encrypted: i=1; AJvYcCVNl1400mLOOE+IvDizA8ptifiEdJg+YQn6HpurCRCptsFKgajuqXeaiv+pr6yS83WiewZUNmvGMc8BabA=@vger.kernel.org X-Gm-Message-State: AOJu0YyGGleUQnz91Nr4Ql+gjQ/jGMQnmLPHCF5ACjFlsOXWRYAr2n+2 LvgzouaRW/2yo5E8decDzNz90jcolNW8hzZrfwFDRUYWSyVHmAiC7Xjn X-Gm-Gg: ASbGncvdNXSCf50G1KfulujX7FR3qR7seaf28AjMEOZAYV+qXXJWl0XjZFnk/dBEBrw NuPWrd4gmGHmKVtFLdSspwa6trR9WtlXzAlLRzxaDoNVwRSCy+1roa5x1GVrxRjVBfwJcJz/MYQ gIsJ01L/5wq+hNiGot/25ilw7ZR6EyFodFS0B0wRky0zA4W5kuV3khRnxCS0+7x3aU5feqSupMZ m4s2L4GL8bapvkWc5+4ACAkfyqA+ZVvszQWLpFZLt1RJAi4O4hZYGQRzch0XX/LCAk8F38ZpcEq s3OrFvSUN7tr4NsXFBu2VMvhu06Zy2TqR63ab4XQtIHSwCjFLL+OaG6YPdKCmD6qhNx17oZBK/A S+jM5l9uDPmos/WHvrYZWrErs6rP4ZO/v2CrBiwj56jiNnAQ14gTO7Mw/rDN1QSo8KMnCsIUuWn BfE/zdeOOebO68RJ9q0+mq X-Google-Smtp-Source: AGHT+IHkUA0mvnPsSgAVcR0DWhFOtjq0L19JNHkwKaF4QEsd4iWX2t/nKLi2cu2yEzfKlnG22mmhUw== X-Received: by 2002:a05:6a20:3ca3:b0:243:d1bd:fbca with SMTP id adf61e73a8af0-243d6dd4e0bmr22695905637.2.1756927299624; Wed, 03 Sep 2025 12:21:39 -0700 (PDT) Received: from localhost (185.3.125.34.bc.googleusercontent.com. [34.125.3.185]) by smtp.gmail.com with UTF8SMTPSA id d2e1a72fcca58-7723f4858e6sm13840352b3a.4.2025.09.03.12.21.38 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Wed, 03 Sep 2025 12:21:39 -0700 (PDT) From: Chia-I Wu To: Boris Brezillon , Steven Price , Liviu Dudau , Maarten Lankhorst , Maxime Ripard , Thomas Zimmermann , David Airlie , Simona Vetter , Grant Likely , Heiko Stuebner , dri-devel@lists.freedesktop.org, linux-kernel@vger.kernel.org Subject: [PATCH v2] drm/panthor: validate group queue count Date: Wed, 3 Sep 2025 12:21:33 -0700 Message-ID: <20250903192133.288477-1-olvaffe@gmail.com> X-Mailer: git-send-email 2.51.0.338.gd7d06c2dae-goog Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Transfer-Encoding: quoted-printable Content-Type: text/plain; charset="utf-8" A panthor group can have at most MAX_CS_PER_CSG panthor queues. Fixes: 4bdca11507928 ("drm/panthor: Add the driver frontend block") Signed-off-by: Chia-I Wu Reviewed-by: Boris Brezillon # v1 Reviewed-by: Steven Price --- v2: - move validation up to panthor_ioctl_group_create - add Fixes tag --- drivers/gpu/drm/panthor/panthor_drv.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/drivers/gpu/drm/panthor/panthor_drv.c b/drivers/gpu/drm/pantho= r/panthor_drv.c index 9256806eb6623..4c202fc5ce050 100644 --- a/drivers/gpu/drm/panthor/panthor_drv.c +++ b/drivers/gpu/drm/panthor/panthor_drv.c @@ -1094,7 +1094,7 @@ static int panthor_ioctl_group_create(struct drm_devi= ce *ddev, void *data, struct drm_panthor_queue_create *queue_args; int ret; =20 - if (!args->queues.count) + if (!args->queues.count || args->queues.count > MAX_CS_PER_CSG) return -EINVAL; =20 ret =3D PANTHOR_UOBJ_GET_ARRAY(queue_args, &args->queues); --=20 2.51.0.338.gd7d06c2dae-goog