kmemleak is reporting pairs of leaked buffers when PCI devices are
unbound from their drivers. One of these buffers contains the name of
the interrupt as generated for the msi_domain_template bundle in
msi_create_device_irq_domain(). This name is passed through
irq_domain_alloc_named_fwnode(), where an irqchip_rwid is allocated,
along with a separate allocation via kasprintf() for another copy of
the name. These are the two leaked buffers.
Resolve this by adding the missing call to irq_domain_free_fwnode() in
msi_remove_device_irq_domain().
Fixes: 27a6dea3ebaa ("genirq/msi: Provide msi_create/free_device_irq_domain()")
Signed-off-by: Alex Williamson <alex.williamson@xxxxxxxxxx>
---
kernel/irq/msi.c | 3 +++
1 file changed, 3 insertions(+)
diff --git a/kernel/irq/msi.c b/kernel/irq/msi.c
index 955267bbc2be..66dc956505b8 100644
--- a/kernel/irq/msi.c
+++ b/kernel/irq/msi.c
@@ -1015,6 +1015,7 @@ void msi_remove_device_irq_domain(struct device *dev, unsigned int domid)
{
struct msi_domain_info *info;
struct irq_domain *domain;
+ struct fwnode_handle *fwnode;
msi_lock_descs(dev);
@@ -1025,7 +1026,9 @@ void msi_remove_device_irq_domain(struct device *dev, unsigned int domid)
dev->msi.data->__domains[domid].domain = NULL;
info = domain->host_data;
+ fwnode = domain->fwnode;
irq_domain_remove(domain);
+ irq_domain_free_fwnode(fwnode);
kfree(container_of(info, struct msi_domain_template, info));
unlock:
