drm/v3d: Fix memory leak in v3d_submit_cl_ioctl

In the impelementation of v3d_submit_cl_ioctl() there are two memory
leaks. One is when allocation for bin fails, and the other is when bin
initialization fails. If kcalloc fails to allocate memory for bin then
render->base should be put. Also, if v3d_job_init() fails to initialize
bin->base then allocated memory for bin should be released.

Fixes: a783a09ee76d ("drm/v3d: Refactor job management.")
Signed-off-by: Navid Emamdoost <navid.emamdoost@gmail.com>
Reviewed-by: Eric Anholt <eric@anholt.net>
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
Link: https://patchwork.freedesktop.org/patch/msgid/20191021185250.26130-1-navid.emamdoost@gmail.com

diff --git a/drivers/gpu/drm/v3d/v3d_gem.c b/drivers/gpu/drm/v3d/v3d_gem.c
index 5d80507..19c092d 100644 (file)
--- a/drivers/gpu/drm/v3d/v3d_gem.c
+++ b/drivers/gpu/drm/v3d/v3d_gem.c
@@ -557,13 +557,16 @@ v3d_submit_cl_ioctl(struct drm_device *dev, void *data,
 
        if (args->bcl_start != args->bcl_end) {
                bin = kcalloc(1, sizeof(*bin), GFP_KERNEL);
-               if (!bin)
+               if (!bin) {
+                       v3d_job_put(&render->base);
                        return -ENOMEM;
+               }
 
                ret = v3d_job_init(v3d, file_priv, &bin->base,
                                   v3d_job_free, args->in_sync_bcl);
                if (ret) {
                        v3d_job_put(&render->base);
+                       kfree(bin);
                        return ret;
                }