[Bug 90194] Fix Valgrind error in drmPrimeHandleToFD

bugzilla-daemon at freedesktop.org bugzilla-daemon at freedesktop.org
Mon Apr 27 06:48:14 PDT 2015


https://bugs.freedesktop.org/show_bug.cgi?id=90194

            Bug ID: 90194
           Summary: Fix Valgrind error in drmPrimeHandleToFD
           Product: DRI
           Version: XOrg git
          Hardware: Other
                OS: All
            Status: NEW
          Severity: normal
          Priority: medium
         Component: libdrm
          Assignee: dri-devel at lists.freedesktop.org
          Reporter: guillaume.desmottes at collabora.co.uk

args.fd is left uninitialized making Valgrind angry.

==14518== Syscall param ioctl(generic) points to uninitialised byte(s)
==14518==    at 0x3EB84F6407: ioctl (syscall-template.S:81)
==14518==    by 0x3B01803B17: drmIoctl (xf86drm.c:175)
==14518==    by 0x3B01806A7B: drmPrimeHandleToFD (xf86drm.c:2701)
==14518==    by 0xDF0866D: drm_intel_bo_gem_export_to_prime
(intel_bufmgr_gem.c:2729)
==14518==    by 0xDA92DF7: intel_query_image (intel_screen.c:563)
==14518==    by 0x32E484E64D: dri3_alloc_render_buffer (dri3_glx.c:926)
==14518==    by 0x32E484E64D: dri3_get_buffer.isra.10 (dri3_glx.c:1307)
==14518==    by 0x32E484F499: dri3_get_buffers (dri3_glx.c:1466)
==14518==    by 0xDAB0486: intel_update_image_buffers (brw_context.c:1475)
==14518==    by 0xDAB0486: intel_update_renderbuffers (brw_context.c:1167)
==14518==    by 0xDAB07B4: intel_prepare_render (brw_context.c:1188)
==14518==    by 0xDAB0906: intelMakeCurrent (brw_context.c:1031)
==14518==    by 0xDA51495: driBindContext (dri_util.c:538)
==14518==    by 0x32E484DAA9: dri3_bind_context (dri3_glx.c:145)
==14518==    by 0x32E481E5E6: MakeContextCurrent (glxcurrent.c:243)
==14518==    by 0x8052F3C: gst_gl_context_glx_activate (gstglcontext_glx.c:401)
==14518==    by 0x8036D51: gst_gl_context_activate (gstglcontext.c:632)
==14518==    by 0x803882C: gst_gl_context_create_thread (gstglcontext.c:1282)
==14518==    by 0x3EBB0703D4: g_thread_proxy (gthread.c:764)
==14518==    by 0x3EB8807529: start_thread (pthread_create.c:310)
==14518==    by 0x3EB850022C: clone (clone.S:109)
==14518==  Address 0xd793a18 is on thread 9's stack
==14518==  in frame #2, created by drmPrimeHandleToFD (xf86drm.c:2695)

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