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 1FC9732D7F8; Sat, 12 Sep 2026 18:22:21 +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=1789237342; cv=none; b=Ft32Pd6s0nKcekOKZJ6sJT1cpGmqJdTeJ9NyjJwjTMS2daVWvF3UhBHX3hL29HYax7OFX7lRVIM9/MLDSNUe62l2D980/mQ88mYvCsW/f5Q9pfKuKZx4bVxIWGesiQnqxWJs+qs2WD9T6/MuS7JFAhfcxxj/BAH268d2qiLzAR8= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1789237342; c=relaxed/simple; bh=JpSopF2fiGRIPBakO5PkSV++2d5EXdd1YjAzCrWGVzE=; h=From:To:Cc:Subject:Date:Message-ID:In-Reply-To:References: MIME-Version:Content-Type; b=E0W2g2c6dzboe0aWfMrqF21fmlWZUH0OSi+tRIUXNvGQzD3rmaEoneeqHoDdqp2Lk/AvFxwJuoteGhukgkAmVINDOCd0IyHQN1grUPUVPSMGY3rrQeiJqWzeBCjEraQJo1006gLx7vCQFOUvG1S9tCtjZ0qSkHPhqtLF4c0vzUI= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dkim=pass (1024-bit key) header.d=linuxfoundation.org header.i=@linuxfoundation.org header.b=eftp4WS2; arc=none smtp.client-ip=100.103.45.18 Authentication-Results: smtp.subspace.kernel.org; dkim=pass (1024-bit key) header.d=linuxfoundation.org header.i=@linuxfoundation.org header.b="eftp4WS2" Received: by smtp.kernel.org (Postfix) with ESMTPSA id E760F1F000FF; Sat, 12 Sep 2026 18:22:19 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=linuxfoundation.org; s=korg; t=1789237341; bh=2Sc3Lyo92Utn9iGZ9O/rsMhAendSh6i4fzutU2v7nRI=; h=From:To:Cc:Subject:Date:In-Reply-To:References; b=eftp4WS2JUoetVjbMqpqwQzE00a6heZgFAE5xWwEhZZtkhqGQ8/bid/mtzWpdCYKi RdbJg+q/i80FLBJjq9fhLxb0B9V53Xgc/TcHsGUSx18ZdEkMonSuEhiAv0cTNPCvbL /mYwaWOQ+a2OVcdX1lK8a+cUyibwZJW9CWKFUack= From: Greg Kroah-Hartman To: stable@vger.kernel.org Cc: Greg Kroah-Hartman , patches@lists.linux.dev, stable , Alan Stern , Andy Shevchenko Subject: [PATCH 5.15 239/935] usb: f_mass_storage: Bump local buffer size in fsg_common_create_luns() Date: Sat, 12 Sep 2026 08:54:29 +0200 Message-ID: <20260912065532.308626246@linuxfoundation.org> X-Mailer: git-send-email 2.55.0 In-Reply-To: <20260912065526.833703348@linuxfoundation.org> References: <20260912065526.833703348@linuxfoundation.org> User-Agent: quilt/0.69 X-stable: review X-Patchwork-Hint: ignore Precedence: bulk X-Mailing-List: patches@lists.linux.dev List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit 5.15-stable review patch. If anyone has any objections, please let me know. ------------------ From: Andy Shevchenko commit 9f6f095beec82a80daa666a3b2186a5b95841e9a upstream. GCC (Debian 14.2.0-19) is not happy about the buffer size: drivers/usb/gadget/function/f_mass_storage.c:2970:48: error: ‘%d’ directive output may be truncated writing between 1 and 9 bytes into a region of size 5 [-Werror=format-truncation=] Bump the size to get it enough for all possible values. Note, although cfg->nluns is limited to FSG_MAX_LUNS (16), the compiler doesn't realize this and complains about the buffer size. Also note, the existing comment is wrong as size 8 for the whole buffer doesn't cover 100 mil numbers, hence drop it altogether. Fixes: b27c08c953e9 ("usb: gadget: f_mass_storage: create lun creation helpers for use in fsg_common_init") Cc: stable Acked-by: Alan Stern Signed-off-by: Andy Shevchenko Link: https://patch.msgid.link/20260817161239.1448582-1-andriy.shevchenko@linux.intel.com Signed-off-by: Greg Kroah-Hartman --- drivers/usb/gadget/function/f_mass_storage.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) --- a/drivers/usb/gadget/function/f_mass_storage.c +++ b/drivers/usb/gadget/function/f_mass_storage.c @@ -2808,7 +2808,7 @@ EXPORT_SYMBOL_GPL(fsg_common_create_lun) int fsg_common_create_luns(struct fsg_common *common, struct fsg_config *cfg) { - char buf[8]; /* enough for 100000000 different numbers, decimal */ + char buf[14]; int i, rc; fsg_common_remove_luns(common);