Commit 280dc4bf01bc9fe1dfe212f27644855bab936d2d
2013-10-14T00:54:05
Lock mutex before second pthread_cond_wait in usbutils to prevent a race.
diff --git a/usbutils.c b/usbutils.c
index 00bfcce..2ab34d4 100644
--- a/usbutils.c
+++ b/usbutils.c
@@ -2237,6 +2237,7 @@ static int callback_wait(struct usb_transfer *ut, int *transferred, unsigned int
libusb_cancel_transfer(transfer);
/* Now wait for the callback function to be invoked. */
+ mutex_lock(&ut->mutex);
pthread_cond_wait(&ut->cond, &ut->mutex);
}
ret = transfer->status;