6.1-stable review patch. If anyone has any objections, please let me know.
------------------
From: Aleksandr Mishin <amishin@xxxxxxxxxx>
commit dce68a49be26abf52712e0ee452a45fa01ab4624 upstream.
In imx_rproc_addr_init() strcmp() is performed over the node after the
of_node_put() is performed over it.
Fix this error by moving of_node_put() calls.
Found by Linux Verification Center (linuxtesting.org) with SVACE.
Fixes: 5e4c1243071d ("remoteproc: imx_rproc: support remote cores booted before Linux Kernel")
Cc: stable@xxxxxxxxxxxxxxx
Signed-off-by: Aleksandr Mishin <amishin@xxxxxxxxxx>
Link: https://lore.kernel.org/r/20240612131714.12907-1-amishin@xxxxxxxxxx
Signed-off-by: Mathieu Poirier <mathieu.poirier@xxxxxxxxxx>
Signed-off-by: Greg Kroah-Hartman <gregkh@xxxxxxxxxxxxxxxxxxx>
---
drivers/remoteproc/imx_rproc.c | 8 ++++++--
1 file changed, 6 insertions(+), 2 deletions(-)
--- a/drivers/remoteproc/imx_rproc.c
+++ b/drivers/remoteproc/imx_rproc.c
@@ -604,25 +604,29 @@ static int imx_rproc_addr_init(struct im
continue;
}
err = of_address_to_resource(node, 0, &res);
- of_node_put(node);
if (err) {
dev_err(dev, "unable to resolve memory region\n");
+ of_node_put(node);
return err;
}
- if (b >= IMX_RPROC_MEM_MAX)
+ if (b >= IMX_RPROC_MEM_MAX) {
+ of_node_put(node);
break;
+ }
/* Not use resource version, because we might share region */
priv->mem[b].cpu_addr = devm_ioremap_wc(&pdev->dev, res.start, resource_size(&res));
if (!priv->mem[b].cpu_addr) {
dev_err(dev, "failed to remap %pr\n", &res);
+ of_node_put(node);
return -ENOMEM;
}
priv->mem[b].sys_addr = res.start;
priv->mem[b].size = resource_size(&res);
if (!strcmp(node->name, "rsc-table"))
priv->rsc_table = priv->mem[b].cpu_addr;
+ of_node_put(node);
b++;
}
