The v4l2_async_unbind_subdev_one() deallocates the pointer
&asc->asc_subdev_entry. The same pointer is again used to
deallocate in list_del() leading to the below kernel crash.
Unable to handle kernel paging request at virtual address dead000000000108
v4l2_async_unregister_subdev+0xf8/0x164
rzg2l_csi2_remove+0x30/0x5c
platform_remove+0x28/0x64
device_remove+0x48/0x74
device_release_driver_internal+0x1d8/0x234
device_driver_detach+0x14/0x1c
unbind_store+0xac/0xb0
Fixes: 28a1295795d8 ("media: v4l: async: Allow multiple connections between entities")
Signed-off-by: Biju Das <biju.das.jz@xxxxxxxxxxxxxx>
---
drivers/media/v4l2-core/v4l2-async.c | 1 -
1 file changed, 1 deletion(-)
diff --git a/drivers/media/v4l2-core/v4l2-async.c b/drivers/media/v4l2-core/v4l2-async.c
index 091e8cf4114b..8cfd593d293d 100644
--- a/drivers/media/v4l2-core/v4l2-async.c
+++ b/drivers/media/v4l2-core/v4l2-async.c
@@ -880,7 +880,6 @@ void v4l2_async_unregister_subdev(struct v4l2_subdev *sd)
&asc->notifier->waiting_list);
v4l2_async_unbind_subdev_one(asc->notifier, asc);
- list_del(&asc->asc_subdev_entry);
}
}
--
2.25.1
