diff options
| author | Erik Faye-Lund <[email protected]> | 2018-09-06 11:21:53 +0100 |
|---|---|---|
| committer | Erik Faye-Lund <[email protected]> | 2018-09-12 10:14:43 +0200 |
| commit | eaa718588ee97241cdbfea0b49bc30d93a99667c (patch) | |
| tree | 17fd19e538af1d14ad34ccbde7b9c1bf5f711449 /src | |
| parent | d631916f295d8e40e7f9e329bd285a32f2747c3c (diff) | |
winsys/virgl: avoid unintended behavior
If we end up never taking the loop that writes ret, we can end up with
an uninitialized value, and if we're *really* unlucky, that value can
be -1, causing us to go down an error-path instead of a success path.
This was obviously not intended, so let's just initialize this to zero.
Noticed by Valgrind:
Conditional jump or move depends on uninitialised value(s)
at 0xBA640A0: virgl_drm_winsys_resource_cache_create (virgl_drm_winsys.c:348)
by 0xBA62FCF: virgl_buffer_create (virgl_buffer.c:170)
by 0xBA605AC: virgl_resource_create (virgl_resource.c:60)
by 0xBCF816F: bufferobj_data (st_cb_bufferobjects.c:344)
by 0xBCF816F: st_bufferobj_data (st_cb_bufferobjects.c:390)
by 0xBB7E836: vbo_use_buffer_objects (vbo_exec_api.c:1136)
by 0xBCFCC6E: st_create_context_priv (st_context.c:414)
by 0xBCFD3CD: st_create_context (st_context.c:590)
by 0xBBB30CA: st_api_create_context (st_manager.c:896)
by 0xB981E76: dri_create_context (dri_context.c:155)
by 0xB97BDCE: driCreateContextAttribs (dri_util.c:473)
by 0x5288331: dri3_create_context_attribs (dri3_glx.c:309)
by 0x5264D64: glXCreateContextAttribsARB (create_context.c:78)
Fixes: a8987b88ff1 ("virgl: add driver for virtio-gpu 3D (v2)")
Signed-off-by: Erik Faye-Lund <[email protected]>
Diffstat (limited to 'src')
| -rw-r--r-- | src/gallium/winsys/virgl/drm/virgl_drm_winsys.c | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/src/gallium/winsys/virgl/drm/virgl_drm_winsys.c b/src/gallium/winsys/virgl/drm/virgl_drm_winsys.c index 612d717b998..98e0e99f661 100644 --- a/src/gallium/winsys/virgl/drm/virgl_drm_winsys.c +++ b/src/gallium/winsys/virgl/drm/virgl_drm_winsys.c @@ -313,7 +313,7 @@ virgl_drm_winsys_resource_cache_create(struct virgl_winsys *qws, struct virgl_hw_res *res, *curr_res; struct list_head *curr, *next; int64_t now; - int ret; + int ret = 0; /* only store binds for vertex/index/const buffers */ if (bind != VIRGL_BIND_CONSTANT_BUFFER && bind != VIRGL_BIND_INDEX_BUFFER && |