6.6-stable review patch. If anyone has any objections, please let me know.
------------------
From: Aleksandr Mishin <amishin@xxxxxxxxxx>
commit 2fa26ca8b786888673689ccc9da6094150939982 upstream.
In imx_rproc_addr_init() "nph = of_count_phandle_with_args()" just counts
number of phandles. But phandles may be empty. So of_parse_phandle() in
the parsing loop (0 < a < nph) may return NULL which is later dereferenced.
Adjust this issue by adding NULL-return check.
Found by Linux Verification Center (linuxtesting.org) with SVACE.
Fixes: a0ff4aa6f010 ("remoteproc: imx_rproc: add a NXP/Freescale imx_rproc driver")
Signed-off-by: Aleksandr Mishin <amishin@xxxxxxxxxx>
Reviewed-by: Peng Fan <peng.fan@xxxxxxx>
Cc: stable@xxxxxxxxxxxxxxx
Link: https://lore.kernel.org/r/20240606075204.12354-1-amishin@xxxxxxxxxx
[Fixed title to fit within the prescribed 70-75 charcters]
Signed-off-by: Mathieu Poirier <mathieu.poirier@xxxxxxxxxx>
Signed-off-by: Greg Kroah-Hartman <gregkh@xxxxxxxxxxxxxxxxxxx>
---
drivers/remoteproc/imx_rproc.c | 2 ++
1 file changed, 2 insertions(+)
--- a/drivers/remoteproc/imx_rproc.c
+++ b/drivers/remoteproc/imx_rproc.c
@@ -729,6 +729,8 @@ static int imx_rproc_addr_init(struct im
struct resource res;
node = of_parse_phandle(np, "memory-region", a);
+ if (!node)
+ continue;
/* Not map vdevbuffer, vdevring region */
if (!strncmp(node->name, "vdev", strlen("vdev"))) {
of_node_put(node);
