From: Larysa Zaremba Date: Mon, 17 Nov 2025 07:03:49 +0000 (+0100) Subject: idpf: fix aux device unplugging when rdma is not supported by vport X-Git-Tag: v6.19-rc5~29^2~1^2 X-Git-Url: http://git.ipfire.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=4648fb2f2e7210c53b85220ee07d42d1e4bae3f9;p=thirdparty%2Fkernel%2Flinux.git idpf: fix aux device unplugging when rdma is not supported by vport If vport flags do not contain VIRTCHNL2_VPORT_ENABLE_RDMA, driver does not allocate vdev_info for this vport. This leads to kernel NULL pointer dereference in idpf_idc_vport_dev_down(), which references vdev_info for every vport regardless. Check, if vdev_info was ever allocated before unplugging aux device. Fixes: be91128c579c ("idpf: implement RDMA vport auxiliary dev create, init, and destroy") Reviewed-by: Madhu Chittim Signed-off-by: Larysa Zaremba Reviewed-by: Paul Menzel Reviewed-by: Aleksandr Loktionov Tested-by: Krishneil Singh Signed-off-by: Tony Nguyen --- diff --git a/drivers/net/ethernet/intel/idpf/idpf_idc.c b/drivers/net/ethernet/intel/idpf/idpf_idc.c index 7e20a07e98e5..6dad0593f7f2 100644 --- a/drivers/net/ethernet/intel/idpf/idpf_idc.c +++ b/drivers/net/ethernet/intel/idpf/idpf_idc.c @@ -322,7 +322,7 @@ static void idpf_idc_vport_dev_down(struct idpf_adapter *adapter) for (i = 0; i < adapter->num_alloc_vports; i++) { struct idpf_vport *vport = adapter->vports[i]; - if (!vport) + if (!vport || !vport->vdev_info) continue; idpf_unplug_aux_dev(vport->vdev_info->adev);