--- drivers/usb/mon/mon_bin.c

+++ drivers/usb/mon/mon_bin.c

@@ -971,7 +971,7 @@ static int mon_bin_ioctl(struct inode *i

mutex_lock(&rp->fetch_lock);

spin_lock_irqsave(&rp->b_lock, flags);

- mon_free_buff(rp->b_vec, size/CHUNK_SIZE);

+ mon_free_buff(rp->b_vec, rp->b_size/CHUNK_SIZE);

kfree(rp->b_vec);

rp->b_vec = vec;

rp->b_size = size;