4.7-stable review patch. If anyone has any objections, please let me know.
------------------ From: Alexandre Bounine <alexandre.boun...@idt.com> commit b30069291dc7f9b9a073c33d619818fe4a8e50de upstream. Fix incorrect condition to identify involvment of a address translation mechanism. This bug results in NULL pointer kernel crash dump in cases when mapping of inbound RapidIO address range is requested within existing aprture. Link: http://lkml.kernel.org/r/20160901173144.2983-1-alexandre.boun...@idt.com Signed-off-by: Alexandre Bounine <alexandre.boun...@idt.com> Cc: Matt Porter <mpor...@kernel.crashing.org> Cc: Andre van Herk <andre.van.h...@prodrive-technologies.com> Cc: Barry Wood <barry.w...@idt.com> Signed-off-by: Andrew Morton <a...@linux-foundation.org> Signed-off-by: Linus Torvalds <torva...@linux-foundation.org> Signed-off-by: Greg Kroah-Hartman <gre...@linuxfoundation.org> --- drivers/rapidio/devices/tsi721.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) --- a/drivers/rapidio/devices/tsi721.c +++ b/drivers/rapidio/devices/tsi721.c @@ -1148,7 +1148,7 @@ static int tsi721_rio_map_inb_mem(struct } else if (ibw_start < (ib_win->rstart + ib_win->size) && (ibw_start + ibw_size) > ib_win->rstart) { /* Return error if address translation involved */ - if (direct && ib_win->xlat) { + if (!direct || ib_win->xlat) { ret = -EFAULT; break; }
