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 5B466882C for ; Fri, 10 Mar 2023 15:15:27 +0000 (UTC) Received: by smtp.kernel.org (Postfix) with ESMTPSA id B5565C433EF; Fri, 10 Mar 2023 15:15:26 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=linuxfoundation.org; s=korg; t=1678461327; bh=cLpGKzR9oXYwKmGmS61ejIZhP4XCNmu/Ru+Ow1oZKpg=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=dUYBV63UZlbeD44+jdDZb2B02vdV09gc3GOKqSddS0oeuleiyqUk8Q4qfOGNROjud dXv8Q+0JITQrXp4Cyyfdt18fGhpe1e/wx1AjigSAyO3qjgsmb9vHHh21LoS0xYzFAE 28G8eqpBsV0GJuNXxirHgcytaKtBJXOJMTb8Xoi0= From: Greg Kroah-Hartman To: stable@vger.kernel.org Cc: Greg Kroah-Hartman , patches@lists.linux.dev, Olav Kongas , Sasha Levin Subject: [PATCH 5.15 101/136] USB: isp116x: fix memory leak with using debugfs_lookup() Date: Fri, 10 Mar 2023 14:43:43 +0100 Message-Id: <20230310133710.207388001@linuxfoundation.org> X-Mailer: git-send-email 2.39.2 In-Reply-To: <20230310133706.811226272@linuxfoundation.org> References: <20230310133706.811226272@linuxfoundation.org> User-Agent: quilt/0.67 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 From: Greg Kroah-Hartman [ Upstream commit a95f62d5813facbec20ec087472eb313ee5fa8af ] When calling debugfs_lookup() the result must have dput() called on it, otherwise the memory will leak over time. To make things simpler, just call debugfs_lookup_and_remove() instead which handles all of the logic at once. Cc: Olav Kongas Link: https://lore.kernel.org/r/20230202153235.2412790-6-gregkh@linuxfoundation.org Signed-off-by: Greg Kroah-Hartman Signed-off-by: Sasha Levin --- drivers/usb/host/isp116x-hcd.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/drivers/usb/host/isp116x-hcd.c b/drivers/usb/host/isp116x-hcd.c index 8c7f0991c21b5..9c3e12f2f25d8 100644 --- a/drivers/usb/host/isp116x-hcd.c +++ b/drivers/usb/host/isp116x-hcd.c @@ -1206,7 +1206,7 @@ static void create_debug_file(struct isp116x *isp116x) static void remove_debug_file(struct isp116x *isp116x) { - debugfs_remove(debugfs_lookup(hcd_name, usb_debug_root)); + debugfs_lookup_and_remove(hcd_name, usb_debug_root); } #else -- 2.39.2