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sh: intc: Fix use-after-free bug in register_intc_controller()

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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: 2dcec7a988 ("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>
This commit is contained in:
Dan Carpenter 2024-10-23 11:41:59 +03:00 committed by John Paul Adrian Glaubitz
parent 3c891f7c6a
commit 63e72e5519
1 changed files with 1 additions and 1 deletions
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2
drivers/sh/intc/core.c
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@ -209,7 +209,6 @@ 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);
@ -369,6 +368,7 @@ 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;