[Bug 432477] Re: Valgrind reports false positives for V4L ioctls

[Matthias Klose]

closing this very old issue. please recheck with newer releases

** Changed in: valgrind (Ubuntu)
       Status: New => Invalid

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Title:
  Valgrind reports false positives for V4L ioctls

Status in gst-plugins-good:
  Unknown
Status in libv4l package in Ubuntu:
  Invalid
Status in valgrind package in Ubuntu:
  Invalid

Bug description:
  Got this error when valgrinding an audio/video call in Empathy:

  =5989== Syscall param ioctl(generic) points to uninitialised byte(s)
  ==5989==    at 0xB827B79: syscall (syscall.S:39)
  ==5989==    by 0x28699BFB: v4l2_fd_open (libv4l2.c:474)
  ==5989==    by 0x2848CD36: gst_v4l2_open (v4l2_calls.c:437)
  ==5989==    by 0x2848213A: gst_v4l2_object_start (gstv4l2object.c:585)
  ==5989==    by 0x2848866B: gst_v4l2src_change_state (gstv4l2src.c:749)
  ==5989==    by 0x6E66AEB: gst_element_change_state (gstelement.c:2548)
  ==5989==    by 0x6E69C57: gst_element_set_state_func (gstelement.c:2504)
  ==5989==    by 0x6E565B0: gst_bin_change_state_func (gstbin.c:2118)
  ==5989==    by 0x6E66AEB: gst_element_change_state (gstelement.c:2548)
  ==5989==    by 0x6E69C57: gst_element_set_state_func (gstelement.c:2504)
  ==5989==    by 0x6E565B0: gst_bin_change_state_func (gstbin.c:2118)
  ==5989==    by 0x217EF8D7: gst_gconf_video_src_change_state (gstgconfvideosrc.c:238)
  ==5989==    by 0x6E66AEB: gst_element_change_state (gstelement.c:2548)
  ==5989==    by 0x6E69C57: gst_element_set_state_func (gstelement.c:2504)
  ==5989==    by 0x6E565B0: gst_bin_change_state_func (gstbin.c:2118)
  ==5989==    by 0x6E66AEB: gst_element_change_state (gstelement.c:2548)
  ==5989==    by 0x6E69C57: gst_element_set_state_func (gstelement.c:2504)
  ==5989==    by 0x420F3F: empathy_call_window_setup_video_preview (empathy-call-window.c:665)
  ==5989==    by 0x4210C7: empathy_call_window_sink_added_cb (empathy-call-window.c:1581)
  ==5989==    by 0xB04567D: g_closure_invoke (gclosure.c:767)
  ==5989==  Address 0x7feffe724 is on thread 1's stack
  ==5989== 
  ==5989== Syscall param ioctl(generic) points to uninitialised byte(s)
  ==5989==    at 0xB827B79: syscall (syscall.S:39)
  ==5989==    by 0x288B19DE: v4lcontrol_create (libv4lcontrol.c:152)
  ==5989==    by 0x288A637C: v4lconvert_create (libv4lconvert.c:139)
  ==5989==    by 0x28699C91: v4l2_fd_open (libv4l2.c:482)
  ==5989==    by 0x2848CD36: gst_v4l2_open (v4l2_calls.c:437)
  ==5989==    by 0x2848213A: gst_v4l2_object_start (gstv4l2object.c:585)
  ==5989==    by 0x2848866B: gst_v4l2src_change_state (gstv4l2src.c:749)
  ==5989==    by 0x6E66AEB: gst_element_change_state (gstelement.c:2548)
  ==5989==    by 0x6E69C57: gst_element_set_state_func (gstelement.c:2504)
  ==5989==    by 0x6E565B0: gst_bin_change_state_func (gstbin.c:2118)
  ==5989==    by 0x6E66AEB: gst_element_change_state (gstelement.c:2548)
  ==5989==    by 0x6E69C57: gst_element_set_state_func (gstelement.c:2504)
  ==5989==    by 0x6E565B0: gst_bin_change_state_func (gstbin.c:2118)
  ==5989==    by 0x217EF8D7: gst_gconf_video_src_change_state (gstgconfvideosrc.c:238)
  ==5989==    by 0x6E66AEB: gst_element_change_state (gstelement.c:2548)
  ==5989==    by 0x6E69C57: gst_element_set_state_func (gstelement.c:2504)
  ==5989==    by 0x6E565B0: gst_bin_change_state_func (gstbin.c:2118)
  ==5989==    by 0x6E66AEB: gst_element_change_state (gstelement.c:2548)
  ==5989==    by 0x6E69C57: gst_element_set_state_func (gstelement.c:2504)
  ==5989==    by 0x420F3F: empathy_call_window_setup_video_preview (empathy-call-window.c:665)
  ==5989==  Address 0x7feffe4b4 is on thread 1's stack
  ==5989== 
  ==5989== Syscall param ioctl(generic) points to uninitialised byte(s)
  ==5989==    at 0xB827B79: syscall (syscall.S:39)
  ==5989==    by 0x288B1F5A: v4lcontrol_create (libv4lcontrol.c:288)
  ==5989==    by 0x288A637C: v4lconvert_create (libv4lconvert.c:139)
  ==5989==    by 0x28699C91: v4l2_fd_open (libv4l2.c:482)
  ==5989==    by 0x2848CD36: gst_v4l2_open (v4l2_calls.c:437)
  ==5989==    by 0x2848213A: gst_v4l2_object_start (gstv4l2object.c:585)
  ==5989==    by 0x2848866B: gst_v4l2src_change_state (gstv4l2src.c:749)
  ==5989==    by 0x6E66AEB: gst_element_change_state (gstelement.c:2548)
  ==5989==    by 0x6E69C57: gst_element_set_state_func (gstelement.c:2504)
  ==5989==    by 0x6E565B0: gst_bin_change_state_func (gstbin.c:2118)
  ==5989==    by 0x6E66AEB: gst_element_change_state (gstelement.c:2548)
  ==5989==    by 0x6E69C57: gst_element_set_state_func (gstelement.c:2504)
  ==5989==    by 0x6E565B0: gst_bin_change_state_func (gstbin.c:2118)
  ==5989==    by 0x217EF8D7: gst_gconf_video_src_change_state (gstgconfvideosrc.c:238)
  ==5989==    by 0x6E66AEB: gst_element_change_state (gstelement.c:2548)
  ==5989==    by 0x6E69C57: gst_element_set_state_func (gstelement.c:2504)
  ==5989==    by 0x6E565B0: gst_bin_change_state_func (gstbin.c:2118)
  ==5989==    by 0x6E66AEB: gst_element_change_state (gstelement.c:2548)
  ==5989==    by 0x6E69C57: gst_element_set_state_func (gstelement.c:2504)
  ==5989==    by 0x420F3F: empathy_call_window_setup_video_preview (empathy-call-window.c:665)
  ==5989==  Address 0x7feffe504 is on thread 1's stack
  ==5989== 
  ==5989== Syscall param ioctl(generic) points to uninitialised byte(s)
  ==5989==    at 0xB827B79: syscall (syscall.S:39)
  ==5989==    by 0x2869904B: v4l2_map_buffers (libv4l2.c:150)
  ==5989==    by 0x2869B1D7: v4l2_ioctl (libv4l2.c:982)
  ==5989==    by 0x28484D79: gst_v4l2_buffer_pool_qbuf (gstv4l2bufferpool.c:475)
  ==5989==    by 0x2848E49E: gst_v4l2src_capture_start (v4l2src_calls.c:72)
  ==5989==    by 0x28488350: gst_v4l2src_set_caps (gstv4l2src.c:620)
  ==5989==    by 0x6E7E938: gst_pad_set_caps (gstpad.c:2526)
  ==5989==    by 0x28487027: gst_v4l2src_negotiate (gstv4l2src.c:507)
  ==5989==    by 0xC42E65C: gst_base_src_start (gstbasesrc.c:2491)
  ==5989==    by 0xC434547: gst_base_src_activate_push (gstbasesrc.c:2739)
  ==5989==    by 0x6E832BA: gst_pad_activate_push (gstpad.c:915)
  ==5989==    by 0x6E83E66: gst_pad_set_active (gstpad.c:671)
  ==5989==    by 0x6E65A4A: activate_pads (gstelement.c:2632)
  ==5989==    by 0x6E76F6D: gst_iterator_fold (gstiterator.c:545)
  ==5989==    by 0x6E659B5: iterator_activate_fold_with_resync (gstelement.c:2664)
  ==5989==    by 0x6E67D4E: gst_element_pads_activate (gstelement.c:2701)
  ==5989==    by 0x6E69F7E: gst_element_change_state_func (gstelement.c:2778)
  ==5989==    by 0xC433173: gst_base_src_change_state (gstbasesrc.c:2877)
  ==5989==    by 0x2848863E: gst_v4l2src_change_state (gstv4l2src.c:756)
  ==5989==    by 0x6E66AEB: gst_element_change_state (gstelement.c:2548)
  ==5989==  Address 0x7feffe2e8 is on thread 1's stack

  ProblemType: Bug
  Architecture: amd64
  Date: Fri Sep 18 14:13:06 2009
  DistroRelease: Ubuntu 9.10
  Package: gstreamer0.10-plugins-good 0.10.16-1ubuntu2
  ProcEnviron:
   PATH=(custom, user)
   LANG=fr_FR.UTF-8
   SHELL=/bin/bash
  ProcVersionSignature: Ubuntu 2.6.31-10.32-generic
  SourcePackage: gst-plugins-good0.10
  Uname: Linux 2.6.31-10-generic x86_64

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