From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from smtp.kernel.org (aws-us-west-2-korg-mail-1.web.codeaurora.org [10.30.226.201]) (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 C87192E5412; Tue, 8 Jul 2025 17:00:45 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=10.30.226.201 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1751994045; cv=none; b=L35yZJZrHzs6kiHvzTpuNJYeizy/M2s8H4Ko16WWHWZp5o2K6cxCroXekcRNmRhHN7mdvh1R6VudrC1tsV6b/F0GHDpWzEbCSS4Ueak+q6mBFmXuiXvrvmNR63Qql1wMLyJo2NvvGLq8tQONLy2JPwWWWBR7jKWTJ3NInuttZ7E= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1751994045; c=relaxed/simple; bh=x6jzcryHhfbhIQw0BdUb/g0XNDJpWc3NJfM8d1YwMe8=; h=From:To:Cc:Subject:Date:Message-ID:In-Reply-To:References: MIME-Version; b=kq9KbnK0/jWr7VoOMKCrcJLm390eGTcIL1ZWsZA4p65Epd/tw8N/+b7DzBRIn1udTR6KqJ2OQAMZ1ZDKbPZaqqsA/a62yiEAPIF8NXT0iH48/klEKmRgIgoU6PdByGT0q9UngOhwkLxaVKUSEswDMVukW4/KUZfwu7QZJZBBpeo= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dkim=pass (1024-bit key) header.d=linuxfoundation.org header.i=@linuxfoundation.org header.b=irEQYeZq; arc=none smtp.client-ip=10.30.226.201 Authentication-Results: smtp.subspace.kernel.org; dkim=pass (1024-bit key) header.d=linuxfoundation.org header.i=@linuxfoundation.org header.b="irEQYeZq" Received: by smtp.kernel.org (Postfix) with ESMTPSA id E9A66C4CEED; Tue, 8 Jul 2025 17:00:44 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=linuxfoundation.org; s=korg; t=1751994045; bh=x6jzcryHhfbhIQw0BdUb/g0XNDJpWc3NJfM8d1YwMe8=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=irEQYeZqcW6cSwI/iPAsB1SVYmVW9fywiI38MKEVjizPDTHGO+dAy5YU1hSBEXRjC 7Oa0T6+c2b0sjH02p9tiOQscpG5yq6U+VKy6qLRuc7YBKgsXGT3DqO+MTuFU4w/eJn +IwURRq877uj63ZkIx88BvNJ0s2C/ALpdomLqvu4= From: Greg Kroah-Hartman To: stable@vger.kernel.org Cc: Greg Kroah-Hartman , patches@lists.linux.dev, Ping Cheng , Qasim Ijaz , Jiri Kosina Subject: [PATCH 5.15 077/160] HID: wacom: fix memory leak on kobject creation failure Date: Tue, 8 Jul 2025 18:21:54 +0200 Message-ID: <20250708162233.676901775@linuxfoundation.org> X-Mailer: git-send-email 2.50.0 In-Reply-To: <20250708162231.503362020@linuxfoundation.org> References: <20250708162231.503362020@linuxfoundation.org> User-Agent: quilt/0.68 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-Transfer-Encoding: 8bit 5.15-stable review patch. If anyone has any objections, please let me know. ------------------ From: Qasim Ijaz commit 5ae416c5b1e2e816aee7b3fc8347adf70afabb4c upstream. During wacom_initialize_remotes() a fifo buffer is allocated with kfifo_alloc() and later a cleanup action is registered during devm_add_action_or_reset() to clean it up. However if the code fails to create a kobject and register it with sysfs the code simply returns -ENOMEM before the cleanup action is registered leading to a memory leak. Fix this by ensuring the fifo is freed when the kobject creation and registration process fails. Fixes: 83e6b40e2de6 ("HID: wacom: EKR: have the wacom resources dynamically allocated") Reviewed-by: Ping Cheng Cc: stable@vger.kernel.org Signed-off-by: Qasim Ijaz Signed-off-by: Jiri Kosina Signed-off-by: Greg Kroah-Hartman --- drivers/hid/wacom_sys.c | 4 +++- 1 file changed, 3 insertions(+), 1 deletion(-) --- a/drivers/hid/wacom_sys.c +++ b/drivers/hid/wacom_sys.c @@ -2020,8 +2020,10 @@ static int wacom_initialize_remotes(stru remote->remote_dir = kobject_create_and_add("wacom_remote", &wacom->hdev->dev.kobj); - if (!remote->remote_dir) + if (!remote->remote_dir) { + kfifo_free(&remote->remote_fifo); return -ENOMEM; + } error = sysfs_create_files(remote->remote_dir, remote_unpair_attrs);