From nobody Sun Jun 14 14:31:07 2026 Received: from cstnet.cn (smtp81.cstnet.cn [159.226.251.81]) (using TLSv1.2 with cipher DHE-RSA-AES256-SHA (256/256 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id 4A1B2336895; Fri, 3 Apr 2026 07:55:13 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=159.226.251.81 ARC-Seal: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1775202916; cv=none; b=Oerdm3TkXWsTzzCRFA8I0XOY6xGTWUQSs1tH7YnuGVY2DYhfFgJpxmu693BNhleyLImG1Xma4N5lJmek6qbujvq3aOe+5L+YFetK3rNUJbQw5ePCMokmV6kHY4Vcqb0aKCSS4wW0iyXfeqRW/NXdN7Aq/ct7wHLSbog2tDUSooI= ARC-Message-Signature: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1775202916; c=relaxed/simple; bh=VEtcde3sOr8JwTyesiwbN+OcA7Tk0q0s9OFxqzRuUEM=; h=From:Date:Message-ID:To:Cc:Subject; b=FcnjOp3Ys6Sm61pSjRs0MYbUn8L8dhQ9LExoBRBC3oZhjrv80mzB4UBYuqTnb4G3FJUBE4THaL3x3Dw6fOMDAs8QBrZXcrJ7AtxnCzeMeiU0bGppVjx6yP9lwMXXJ+mmhPg06aEMxmp5uVOt29DHGB/VnsqQ5Z1tn6nOyuJlm4Q= ARC-Authentication-Results: i=1; smtp.subspace.kernel.org; dmarc=none (p=none dis=none) header.from=iscas.ac.cn; spf=pass smtp.mailfrom=iscas.ac.cn; arc=none smtp.client-ip=159.226.251.81 Authentication-Results: smtp.subspace.kernel.org; dmarc=none (p=none dis=none) header.from=iscas.ac.cn Authentication-Results: smtp.subspace.kernel.org; spf=pass smtp.mailfrom=iscas.ac.cn Received: from 0001-slimbus.eml (unknown [111.196.245.197]) by APP-03 (Coremail) with SMTP id rQCowADX9dxecs9pa6O9DA--.57185S2; Fri, 03 Apr 2026 15:55:10 +0800 (CST) From: Pengpeng Hou Date: Fri, 3 Apr 2026 14:55:04 +0800 Message-ID: <20260403183503.3-slimbus-compatible-pengpeng@iscas.ac.cn> To: Srinivas Kandagatla Cc: linux-sound@vger.kernel.org, linux-kernel@vger.kernel.org, pengpeng@iscas.ac.cn Subject: [PATCH] slimbus: validate DT compatible before parsing it X-CM-TRANSID: rQCowADX9dxecs9pa6O9DA--.57185S2 X-Coremail-Antispam: 1UD129KBjvdXoWrKw1DWF13Jry3JF47ZryUGFg_yoWDuwc_ur Z3ZF9rJrZ8Cwsakr43Zr45Zr9Yvr4q9r48Zws7t3W5KryDZrn5XFykZrn8G3y3Zr4v9FWa kw4qyr4FyFn5CjkaLaAFLSUrUUUUjb8apTn2vfkv8UJUUUU8Yxn0WfASr-VFAUDa7-sFnT 9fnUUIcSsGvfJTRUUUbw8FF20E14v26r1j6r4UM7CY07I20VC2zVCF04k26cxKx2IYs7xG 6rWj6s0DM7CIcVAFz4kK6r1j6r18M28lY4IEw2IIxxk0rwA2F7IY1VAKz4vEj48ve4kI8w A2z4x0Y4vE2Ix0cI8IcVAFwI0_Xr0_Ar1l84ACjcxK6xIIjxv20xvEc7CjxVAFwI0_Cr0_ Gr1UM28EF7xvwVC2z280aVAFwI0_GcCE3s1l84ACjcxK6I8E87Iv6xkF7I0E14v26rxl6s 0DM2AIxVAIcxkEcVAq07x20xvEncxIr21l5I8CrVACY4xI64kE6c02F40Ex7xfMcIj6xII jxv20xvE14v26r1Y6r17McIj6I8E87Iv67AKxVW8JVWxJwAm72CE4IkC6x0Yz7v_Jr0_Gr 1lF7xvr2IY64vIr41lF7I21c0EjII2zVCS5cI20VAGYxC7MxAIw28IcxkI7VAKI48JMxC2 0s026xCaFVCjc4AY6r1j6r4UMI8I3I0E5I8CrVAFwI0_Jr0_Jr4lx2IqxVCjr7xvwVAFwI 0_JrI_JrWlx4CE17CEb7AF67AKxVWUAVWUtwCIc40Y0x0EwIxGrwCI42IY6xIIjxv20xvE 14v26r1j6r1xMIIF0xvE2Ix0cI8IcVCY1x0267AKxVW8JVWxJwCI42IY6xAIw20EY4v20x vaj40_Jr0_JF4lIxAIcVC2z280aVAFwI0_Gr0_Cr1lIxAIcVC2z280aVCY1x0267AKxVW8 Jr0_Cr1UYxBIdaVFxhVjvjDU0xZFpf9x0JU-J5rUUUUU= X-CM-SenderInfo: pshqw1xhqjqxpvfd2hldfou0/ Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: Content-Transfer-Encoding: quoted-printable MIME-Version: 1.0 Content-Type: text/plain; charset="utf-8" `of_register_slim_devices()` fetches raw `"compatible"` bytes with `of_get_property()` and then immediately parses them with `sscanf("slim%x,%x", ...)`. Live-tree OF properties are stored as raw bytes plus a separate length; they are not globally guaranteed to be NUL-terminated. Validate the first compatible string before parsing it. Signed-off-by: Pengpeng Hou --- drivers/slimbus/core.c | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-) diff --git a/drivers/slimbus/core.c b/drivers/slimbus/core.c index ee6318e247d3..d88b397ea81f 100644 --- a/drivers/slimbus/core.c +++ b/drivers/slimbus/core.c @@ -209,8 +209,8 @@ static void of_register_slim_devices(struct slim_contro= ller *ctrl) int reg[2], ret; int manf_id, prod_code; =20 - compat =3D of_get_property(node, "compatible", NULL); - if (!compat) + ret =3D of_property_read_string(node, "compatible", &compat); + if (ret) continue; =20 ret =3D sscanf(compat, "slim%x,%x", &manf_id, &prod_code); --=20 2.50.1 (Apple Git-155)