Commit 81de29d8 authored by Allen Pais's avatar Allen Pais Committed by Alex Deucher

drm/amdkfd: fix a potential NULL pointer dereference (v2)

alloc_workqueue is not checked for errors and as a result,
a potential NULL dereference could occur.

v2 (Felix Kuehling):
* Fix compile error (kfifo_free instead of fifo_free)
* Return proper error code
Signed-off-by: default avatarAllen Pais <allen.pais@oracle.com>
Reviewed-by: default avatarFelix Kuehling <Felix.Kuehling@amd.com>
Signed-off-by: default avatarFelix Kuehling <Felix.Kuehling@amd.com>
Signed-off-by: default avatarAlex Deucher <alexander.deucher@amd.com>
parent f77c7109
......@@ -62,6 +62,11 @@ int kfd_interrupt_init(struct kfd_dev *kfd)
}
kfd->ih_wq = alloc_workqueue("KFD IH", WQ_HIGHPRI, 1);
if (unlikely(!kfd->ih_wq)) {
kfifo_free(&kfd->ih_fifo);
dev_err(kfd_chardev(), "Failed to allocate KFD IH workqueue\n");
return -ENOMEM;
}
spin_lock_init(&kfd->interrupt_lock);
INIT_WORK(&kfd->interrupt_work, interrupt_wq);
......
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