From nobody Sun Feb 8 12:57:55 2026 Received: from mail-lf1-f48.google.com (mail-lf1-f48.google.com [209.85.167.48]) (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 7A59E1B599 for ; Mon, 11 Mar 2024 11:01:00 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=209.85.167.48 ARC-Seal: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1710154862; cv=none; b=fgypzZR6gvB9Enp/HAGKVZc8TcKCfChnkSa0WgFtnXqeMn7GUsu9splp3vflFOlBxVKYwVolkeCES03FUIp1BO9mhC4gny4wXaKKmUMHKiIQ12YGZ5dlb8C/WS5sZ6oIy++SjiNKWTBqwOXPVzisvlUbkjsWaVymnZS7HzKmw98= ARC-Message-Signature: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1710154862; c=relaxed/simple; bh=EJwC2X4/a4PrYYGENHc96zyVnf31IyxcNikfeTn9Iqo=; h=Date:From:To:Cc:Subject:Message-ID:MIME-Version:Content-Type: Content-Disposition; b=Oo222N5qQajvPunDj/i/ZBmdIxYxsqeqE0BRobSaY7KjeltDssua47BTaD5OIkBfPXCMJK79NBCQYPSx8U+VUN1Ax21uAZL1wb/YAGm1jCFK1P7RqI6XzIDbjKZcN06PjO9QZyHnXkBO4QVe1VKsKjmcysjZko6m4XYnJbCf0CQ= ARC-Authentication-Results: i=1; smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=linaro.org; spf=pass smtp.mailfrom=linaro.org; dkim=pass (2048-bit key) header.d=linaro.org header.i=@linaro.org header.b=UMl7D/G9; arc=none smtp.client-ip=209.85.167.48 Authentication-Results: smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=linaro.org Authentication-Results: smtp.subspace.kernel.org; spf=pass smtp.mailfrom=linaro.org Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=linaro.org header.i=@linaro.org header.b="UMl7D/G9" Received: by mail-lf1-f48.google.com with SMTP id 2adb3069b0e04-512f54fc2dbso3648562e87.1 for ; Mon, 11 Mar 2024 04:01:00 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=linaro.org; s=google; t=1710154859; x=1710759659; darn=vger.kernel.org; h=content-disposition:mime-version:message-id:subject:cc:to:from:date :from:to:cc:subject:date:message-id:reply-to; bh=S1M9CrsxURK9osAlAJKJLTrbinlvddAx/ivsJ1lbXFE=; b=UMl7D/G9HQJXCSTp48O4jUirKGfQnk+0/h8/npTw9iNhoJVsbUOn1ZhGdeY3DaBSgR Sajq+hsljsPELgy5rCNZUabvKvVtw0yuzcw2tUAbw6MmrIJL+E1oObRDaxVCExNcS47+ 5SziGTwcfcoI23xcfAvzBXnTNz/i3ztdvUvOOrNtZPiOZNwcCaq3h2gYwEOS6TUt26/i io0p7hM4KcTDSvxWgXzg8aSrrMzJl3Htul5/NR/wg09KNvYDYEG/NY9qVuCeKkDaMY8V k9EeGAnv188eugy44RfrJimlcWHGQz3ydTyipkTrQMj01xKe8tTleMCaXaVTD8dR+hy2 HNjw== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20230601; t=1710154859; x=1710759659; h=content-disposition:mime-version:message-id:subject:cc:to:from:date :x-gm-message-state:from:to:cc:subject:date:message-id:reply-to; bh=S1M9CrsxURK9osAlAJKJLTrbinlvddAx/ivsJ1lbXFE=; b=i2JXkdgOqyt8CqYTC8kYVl+O38NIHMNJDI6tsubrgODFvANgEXOiZSBoD0PNMO+V+5 eCBKPCbmnLdOuutA8EORJu1EEvom3yLYQVSFIGNPzbF09bDNZIZvL2jevKW6Nei5cyJ+ z90MErRSEoGEzAzIhUvElSkswQntvEs0XMbCXeexe5pnD9vOEAe311MQbVSbCvA+KgSr 7tYVCX6IdMbK3FqhzZGl7ZO4g0YZAZJQ+e5bXg/JgdlehChi959TczqlciijTT7oJlws mDu0FvVIu4D8C6M1hv6lGAoRG9GqOZO/bw9vBtww4P7ysszKeQm+TA2uTyi0kN0lJWO6 yhOw== X-Forwarded-Encrypted: i=1; AJvYcCX4GZusLQiieSvDUiFwLbdOmwXXFYwjxac9CupoIixkKI6hqHJ1qd8W3OeYLvHf+u6HGV78JZVjT4P24Te3lMNf/vnUkj64opD/dGHJ X-Gm-Message-State: AOJu0YzW74w0PrcWCIwPM/T8D2xPVveC7oAskDKRBqaaL8bXJWrw4TFT 02MorHKJKAAMxJnCHEzqJYLmXSEV8nRGAUNIKlwHN6mDC7wIPlIXC6V4IYIICw0= X-Google-Smtp-Source: AGHT+IFwCGdoVdTpdQaznB2idQvFXubh9UWyyPMuumHmhiYMoRkMnvTiGe/Fhx2f7ORUyE/itJx+5g== X-Received: by 2002:a05:6512:ea2:b0:513:b0d4:da40 with SMTP id bi34-20020a0565120ea200b00513b0d4da40mr706289lfb.20.1710154857841; Mon, 11 Mar 2024 04:00:57 -0700 (PDT) Received: from localhost ([102.222.70.76]) by smtp.gmail.com with ESMTPSA id eo5-20020a056512480500b00513179f6c22sm1045933lfb.96.2024.03.11.04.00.57 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Mon, 11 Mar 2024 04:00:57 -0700 (PDT) Date: Mon, 11 Mar 2024 14:00:53 +0300 From: Dan Carpenter To: Linus Walleij Cc: Bartosz Golaszewski , linux-arm-kernel@lists.infradead.org, linux-gpio@vger.kernel.org, linux-kernel@vger.kernel.org, kernel-janitors@vger.kernel.org Subject: [PATCH] gpio: nomadik: remove BUG_ON() in nmk_gpio_populate_chip() Message-ID: Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Disposition: inline X-Mailer: git-send-email haha only kidding Content-Transfer-Encoding: quoted-printable Content-Type: text/plain; charset="utf-8" Using BUG_ON() is discouraged and also the check wasn't done early enough to prevent an out of bounds access. Check earlier and return an error instead of calling BUG(). Signed-off-by: Dan Carpenter --- drivers/gpio/gpio-nomadik.c | 6 +++++- 1 file changed, 5 insertions(+), 1 deletion(-) diff --git a/drivers/gpio/gpio-nomadik.c b/drivers/gpio/gpio-nomadik.c index 463a765620dc..5e2f9b51ece3 100644 --- a/drivers/gpio/gpio-nomadik.c +++ b/drivers/gpio/gpio-nomadik.c @@ -533,6 +533,11 @@ struct nmk_gpio_chip *nmk_gpio_populate_chip(struct fw= node_handle *fwnode, } =20 #ifdef CONFIG_PINCTRL_NOMADIK + if (id >=3D ARRAY_SIZE(nmk_gpio_chips)) { + dev_err(dev, "populate: invalid id: %u\n", id); + platform_device_put(gpio_pdev); + return ERR_PTR(-EINVAL); + } /* Already populated? */ nmk_chip =3D nmk_gpio_chips[id]; if (nmk_chip) { @@ -606,7 +611,6 @@ struct nmk_gpio_chip *nmk_gpio_populate_chip(struct fwn= ode_handle *fwnode, } =20 #ifdef CONFIG_PINCTRL_NOMADIK - BUG_ON(nmk_chip->bank >=3D ARRAY_SIZE(nmk_gpio_chips)); nmk_gpio_chips[id] =3D nmk_chip; #endif return nmk_chip; --=20 2.43.0