diff options
| author | Johannes Thumshirn <jthumshirn@suse.de> | 2016-05-10 12:39:44 +0200 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2016-06-14 03:49:30 +0200 |
| commit | 7bc364097a89a0a9a5e5e4989d6b3e6fb2027a9e (patch) | |
| tree | 57316735809cb8b3b1991cfb60d09dc692225da3 /drivers/mcb | |
| parent | mei: don't use wake_up_interruptible for wr_ctrl (diff) | |
| download | linux-7bc364097a89a0a9a5e5e4989d6b3e6fb2027a9e.tar.xz linux-7bc364097a89a0a9a5e5e4989d6b3e6fb2027a9e.zip | |
mcb: Acquire reference to device in probe
mcb_probe() does not aqcuire a reference to the probed device but drops one
when removing the device. As it is actually using the device, it should grab
a reference via get_device().
This could lead to a panic found with a rmmod/modprobe stress test
Signed-off-by: Johannes Thumshirn <jthumshirn@suse.de>
Reported-by: Andreas Werner <andreas.werner@men.de>
Tested-by: Andreas Werner <andreas.werner@men.de>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Diffstat (limited to 'drivers/mcb')
| -rw-r--r-- | drivers/mcb/mcb-core.c | 1 |
1 files changed, 1 insertions, 0 deletions
diff --git a/drivers/mcb/mcb-core.c b/drivers/mcb/mcb-core.c index b73c6e7d28e4..f5923c253f7e 100644 --- a/drivers/mcb/mcb-core.c +++ b/drivers/mcb/mcb-core.c @@ -66,6 +66,7 @@ static int mcb_probe(struct device *dev) if (!found_id) return -ENODEV; + get_device(dev); return mdrv->probe(mdev, found_id); } |