From mboxrd@z Thu Jan 1 00:00:00 1970 From: Johan Hovold Subject: [PATCH 0/3] gpio: sysfs: fix attribute leaks and races Date: Tue, 13 Jan 2015 13:00:03 +0100 Message-ID: <1421150406-20255-1-git-send-email-johan@kernel.org> Return-path: Received: from mail-lb0-f177.google.com ([209.85.217.177]:49982 "EHLO mail-lb0-f177.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1750969AbbAMMAW (ORCPT ); Tue, 13 Jan 2015 07:00:22 -0500 Sender: linux-gpio-owner@vger.kernel.org List-Id: linux-gpio@vger.kernel.org To: Linus Walleij Cc: Alexandre Courbot , linux-gpio@vger.kernel.org, linux-kernel@vger.kernel.org, Johan Hovold Here are three more patches for 3.19 fixing some long-standing memory leaks and races (with userspace) in the gpio sysfs-interface implementation. The memory leaks are marked for stable, but I'll need to backport them to pre-3.18 kernels once they are upstream due to commit 0eb4c6c2671c ("gpio: move sysfs support to its own file"). I chose not to mark the final patch for stable as the attribute-creation race with userspace (e.g. udev rule) is not as critical (and patch a bit more invasive). Please note that these patches will cause a conflict with 3511ee7b3312 ("gpio: lib-sysfs: Add 'wakeup' attribute") in gpio/devel, which adds yet another device attribute without ever removing it. Unless the commit in question can be reverted, that leak could be fixed as part of the merge resolution, I guess. Johan Johan Hovold (3): gpio: sysfs: fix gpio-chip device-attribute leak gpio: sysfs: fix gpio device-attribute leak gpio: sysfs: fix gpio attribute-creation race drivers/gpio/gpiolib-sysfs.c | 92 +++++++++++++++++++++++++------------------- drivers/gpio/gpiolib.h | 1 + 2 files changed, 53 insertions(+), 40 deletions(-) -- 2.0.5