On alpha, USER_HZ may be higher than HZ. This results in integer overflow in MULDIV. Signed-off-by: Mikulas Patocka <mpatocka@xxxxxxxxxx> Cc: stable@xxxxxxxxxxxxxxx --- drivers/scsi/sg.c | 2 ++ 1 file changed, 2 insertions(+) Index: linux-3.13/drivers/scsi/sg.c =================================================================== --- linux-3.13.orig/drivers/scsi/sg.c 2014-01-20 21:44:02.000000000 +0100 +++ linux-3.13/drivers/scsi/sg.c 2014-01-24 17:28:02.000000000 +0100 @@ -856,8 +856,10 @@ sg_ioctl(struct file *filp, unsigned int return result; if (val < 0) return -EIO; +#if USER_HZ < HZ if (val >= MULDIV (INT_MAX, USER_HZ, HZ)) val = MULDIV (INT_MAX, USER_HZ, HZ); +#endif sfp->timeout_user = val; sfp->timeout = MULDIV (val, HZ, USER_HZ); -- To unsubscribe from this list: send the line "unsubscribe linux-scsi" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
