On Thu, Nov 26, 2015 at 02:55:23PM +0300, Dan Carpenter wrote: > This code causes a static checker bug. > > drivers/net/wireless/ralink/rt2x00/rt2500usb.c:232 _rt2500usb_register_read() > warn: passing casted pointer 'value' to 'rt2500usb_register_read()' 32 vs 16. > > If the low 16 bits were initialized to zero then this code would only be > a problem on big endian systems. But in this case this is case the low > 16 bits are never initialized. This is called from a function which is > created using a macro: > > RT2X00DEBUGFS_OPS(csr, "0x%.8x\n", u32); > > We end up copying uninitialized data to the user which is bogus and an > information leak. > > Signed-off-by: Dan Carpenter <dan.carpenter@xxxxxxxxxx> Acked-by: Stanislaw Gruszka <sgruszka@xxxxxxxxxx> > --- > Not tested. Perhaps we should just remove this code since it has never > worked. It is used for debugfs interface and I would like to keep it. Stanislaw -- To unsubscribe from this list: send the line "unsubscribe kernel-janitors" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
