Messages in this thread | | | From | Johan Hovold <> | Subject | [PATCH 0/3] gpio: sysfs: fix attribute leaks and races | Date | Tue, 13 Jan 2015 13:00:03 +0100 |
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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
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