diff options
| author | Johan Hovold <johan@kernel.org> | 2019-10-10 14:58:34 +0200 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2019-10-15 20:07:43 +0200 |
| commit | b14a39048c1156cfee76228bf449852da2f14df8 (patch) | |
| tree | 490372575c6606b61ed4d2c047696eb7ee3899c6 | |
| parent | 4f5cafb5cb8471e54afdc9054d973535614f7675 (diff) | |
| download | linux-b14a39048c1156cfee76228bf449852da2f14df8.tar.gz linux-b14a39048c1156cfee76228bf449852da2f14df8.tar.bz2 linux-b14a39048c1156cfee76228bf449852da2f14df8.zip | |
USB: ldusb: fix memleak on disconnect
If disconnect() races with release() after a process has been
interrupted, release() could end up returning early and the driver would
fail to free its driver data.
Fixes: 2824bd250f0b ("[PATCH] USB: add ldusb driver")
Cc: stable <stable@vger.kernel.org> # 2.6.13
Signed-off-by: Johan Hovold <johan@kernel.org>
Link: https://lore.kernel.org/r/20191010125835.27031-2-johan@kernel.org
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
| -rw-r--r-- | drivers/usb/misc/ldusb.c | 5 |
1 files changed, 1 insertions, 4 deletions
diff --git a/drivers/usb/misc/ldusb.c b/drivers/usb/misc/ldusb.c index f3108d85e768..147c90c2a4e5 100644 --- a/drivers/usb/misc/ldusb.c +++ b/drivers/usb/misc/ldusb.c @@ -380,10 +380,7 @@ static int ld_usb_release(struct inode *inode, struct file *file) goto exit; } - if (mutex_lock_interruptible(&dev->mutex)) { - retval = -ERESTARTSYS; - goto exit; - } + mutex_lock(&dev->mutex); if (dev->open_count != 1) { retval = -ENODEV; |