From 8d64d3722c6abbb43bccd518ececc5559e1962b4 Mon Sep 17 00:00:00 2001 From: Dmitry Torokhov Date: Thu, 6 Jul 2006 23:55:00 -0400 Subject: [PATCH] Input: iforce - check array bounds before accessing elements Fixes Coverity #id 864 Signed-off-by: Dmitry Torokhov --- drivers/input/joystick/iforce/iforce-main.c | 18 +++++++++--------- 1 file changed, 9 insertions(+), 9 deletions(-) diff --git a/drivers/input/joystick/iforce/iforce-main.c b/drivers/input/joystick/iforce/iforce-main.c index 6d99e3c378..dc6cfea238 100644 --- a/drivers/input/joystick/iforce/iforce-main.c +++ b/drivers/input/joystick/iforce/iforce-main.c @@ -222,22 +222,22 @@ static int iforce_erase_effect(struct input_dev *dev, int effect_id) int err = 0; struct iforce_core_effect* core_effect; - /* Check who is trying to erase this effect */ - if (iforce->core_effects[effect_id].owner != current->pid) { - printk(KERN_WARNING "iforce-main.c: %d tried to erase an effect belonging to %d\n", current->pid, iforce->core_effects[effect_id].owner); - return -EACCES; - } - if (effect_id < 0 || effect_id >= FF_EFFECTS_MAX) return -EINVAL; - core_effect = iforce->core_effects + effect_id; + core_effect = &iforce->core_effects[effect_id]; + + /* Check who is trying to erase this effect */ + if (core_effect->owner != current->pid) { + printk(KERN_WARNING "iforce-main.c: %d tried to erase an effect belonging to %d\n", current->pid, core_effect->owner); + return -EACCES; + } if (test_bit(FF_MOD1_IS_USED, core_effect->flags)) - err = release_resource(&(iforce->core_effects[effect_id].mod1_chunk)); + err = release_resource(&core_effect->mod1_chunk); if (!err && test_bit(FF_MOD2_IS_USED, core_effect->flags)) - err = release_resource(&(iforce->core_effects[effect_id].mod2_chunk)); + err = release_resource(&core_effect->mod2_chunk); /*TODO: remember to change that if more FF_MOD* bits are added */ core_effect->flags[0] = 0; -- 2.39.5