diff options
Diffstat (limited to 'drivers/misc/genwqe/card_dev.c')
| -rw-r--r-- | drivers/misc/genwqe/card_dev.c | 12 |
1 files changed, 3 insertions, 9 deletions
diff --git a/drivers/misc/genwqe/card_dev.c b/drivers/misc/genwqe/card_dev.c index 8c1b63a4337b..3bc51f19c734 100644 --- a/drivers/misc/genwqe/card_dev.c +++ b/drivers/misc/genwqe/card_dev.c @@ -1,3 +1,4 @@ +// SPDX-License-Identifier: GPL-2.0-only /** * IBM Accelerator Family 'GenWQE' * @@ -7,15 +8,6 @@ * Author: Joerg-Stephan Vogt <jsvogt@de.ibm.com> * Author: Michael Jung <mijung@gmx.net> * Author: Michael Ruettger <michael@ibmra.de> - * - * This program is free software; you can redistribute it and/or modify - * it under the terms of the GNU General Public License (version 2 only) - * as published by the Free Software Foundation. - * - * This program is distributed in the hope that it will be useful, - * but WITHOUT ANY WARRANTY; without even the implied warranty of - * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the - * GNU General Public License for more details. */ /* @@ -780,6 +772,8 @@ static int genwqe_pin_mem(struct genwqe_file *cfile, struct genwqe_mem *m) if ((m->addr == 0x0) || (m->size == 0)) return -EINVAL; + if (m->size > ULONG_MAX - PAGE_SIZE - (m->addr & ~PAGE_MASK)) + return -EINVAL; map_addr = (m->addr & PAGE_MASK); map_size = round_up(m->size + (m->addr & ~PAGE_MASK), PAGE_SIZE); |