diff options
| author | Ming Lei <ming.lei@canonical.com> | 2016-07-10 19:27:36 +0800 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2017-01-06 11:16:17 +0100 |
| commit | 37de955c11b59050346e530143c20b10b4846527 (patch) | |
| tree | 759866a0309f4cc099fc5c99c73095e46d4bed15 /drivers/net/ppp/ppp_generic.c | |
| parent | f85a337b4066e56b0af63b4984bacae1b17dd12a (diff) | |
driver core: fix race between creating/querying glue dir and its cleanup
commit cebf8fd16900fdfd58c0028617944f808f97fe50 upstream.
The global mutex of 'gdp_mutex' is used to serialize creating/querying
glue dir and its cleanup. Turns out it isn't a perfect way because
part(kobj_kset_leave()) of the actual cleanup action() is done inside
the release handler of the glue dir kobject. That means gdp_mutex has
to be held before releasing the last reference count of the glue dir
kobject.
This patch moves glue dir's cleanup after kobject_del() in device_del()
for avoiding the race.
Cc: Yijing Wang <wangyijing@huawei.com>
Reported-by: Chandra Sekhar Lingutla <clingutla@codeaurora.org>
Signed-off-by: Ming Lei <ming.lei@canonical.com>
Cc: Jiri Slaby <jslaby@suse.cz>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Diffstat (limited to 'drivers/net/ppp/ppp_generic.c')
0 files changed, 0 insertions, 0 deletions