5.4-stable review patch. If anyone has any objections, please let me know.
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From: Haoxiang Li haoxiang_li2024@163.com
commit 79fc672a092d93a7eac24fe20a571d4efd8fa5a4 upstream.
Add check for the return value of komeda_get_layer_fourcc_list() to catch the potential exception.
Fixes: 5d51f6c0da1b ("drm/komeda: Add writeback support") Cc: stable@vger.kernel.org Signed-off-by: Haoxiang Li haoxiang_li2024@163.com Acked-by: Liviu Dudau liviu.dudau@arm.com Link: https://lore.kernel.org/r/20241219090256.146424-1-haoxiang_li2024@163.com Signed-off-by: Liviu Dudau liviu.dudau@arm.com Signed-off-by: Greg Kroah-Hartman gregkh@linuxfoundation.org --- drivers/gpu/drm/arm/display/komeda/komeda_wb_connector.c | 4 ++++ 1 file changed, 4 insertions(+)
--- a/drivers/gpu/drm/arm/display/komeda/komeda_wb_connector.c +++ b/drivers/gpu/drm/arm/display/komeda/komeda_wb_connector.c @@ -159,6 +159,10 @@ static int komeda_wb_connector_add(struc formats = komeda_get_layer_fourcc_list(&mdev->fmt_tbl, kwb_conn->wb_layer->layer_type, &n_formats); + if (!formats) { + kfree(kwb_conn); + return -ENOMEM; + }
err = drm_writeback_connector_init(&kms->base, wb_conn, &komeda_wb_connector_funcs,