5.4-stable review patch. If anyone has any objections, please let me know.
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From: Dan Carpenter dan.carpenter@linaro.org
[ Upstream commit 63e72e551942642c48456a4134975136cdcb9b3c ]
In the error handling for this function, d is freed without ever removing it from intc_list which would lead to a use after free. To fix this, let's only add it to the list after everything has succeeded.
Fixes: 2dcec7a988a1 ("sh: intc: set_irq_wake() support") Signed-off-by: Dan Carpenter dan.carpenter@linaro.org Reviewed-by: John Paul Adrian Glaubitz glaubitz@physik.fu-berlin.de Signed-off-by: John Paul Adrian Glaubitz glaubitz@physik.fu-berlin.de Signed-off-by: Sasha Levin sashal@kernel.org --- drivers/sh/intc/core.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/drivers/sh/intc/core.c b/drivers/sh/intc/core.c index 46f0f322d4d8f..48fe5fab5693d 100644 --- a/drivers/sh/intc/core.c +++ b/drivers/sh/intc/core.c @@ -194,7 +194,6 @@ int __init register_intc_controller(struct intc_desc *desc) goto err0;
INIT_LIST_HEAD(&d->list); - list_add_tail(&d->list, &intc_list);
raw_spin_lock_init(&d->lock); INIT_RADIX_TREE(&d->tree, GFP_ATOMIC); @@ -380,6 +379,7 @@ int __init register_intc_controller(struct intc_desc *desc)
d->skip_suspend = desc->skip_syscore_suspend;
+ list_add_tail(&d->list, &intc_list); nr_intc_controllers++;
return 0;