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| author | Jiri Kosina <jkosina@suse.cz> | 2011-05-20 10:50:13 +0200 |
|---|---|---|
| committer | Jiri Kosina <jkosina@suse.cz> | 2011-05-20 10:50:13 +0200 |
| commit | 6cb4b040795c555c7ab4b1ba29b0dba2b5a42beb (patch) | |
| tree | ddc3db5bb24691ecd5da6bbc4dec044d2a4a5e78 /samples | |
| parent | 437f3b199c437e2a9ac01b9ab733c78e5fc7c720 (diff) | |
| download | lwn-6cb4b040795c555c7ab4b1ba29b0dba2b5a42beb.tar.gz lwn-6cb4b040795c555c7ab4b1ba29b0dba2b5a42beb.zip | |
HID: hiddev: fix race between hiddev_disconnect and hiddev_release
When hiddev_disconnect() runs with chardev open, it will proceed with
usbhid_close(). When userspace in parallel runs the hiddev_release(),
it sees !hiddev->exists (as it has been already set so by
hiddev_disconnect()) and kfrees hiddev while hiddev_disconnect() hasn't
finished yet.
Serialize the access to hiddev->exists and hiddev->open by existancelock.
Reported-by: mike-@cinci.rr.com
Signed-off-by: Jiri Kosina <jkosina@suse.cz>
Diffstat (limited to 'samples')
0 files changed, 0 insertions, 0 deletions