Hi Mauro, [auto build test WARNING on linuxtv-media/master] [also build test WARNING on v4.4-rc6 next-20151221]
url: https://github.com/0day-ci/linux/commits/Mauro-Carvalho-Chehab/au8522-Avoid-memory-leak-for-device-config-data/20151222-010649 base: git://linuxtv.org/media_tree.git master config: x86_64-randconfig-x000-201551 (attached as .config) reproduce: # save the attached .config to linux build tree make ARCH=x86_64 Note: it may well be a FALSE warning. FWIW you are at least aware of it now. http://gcc.gnu.org/wiki/Better_Uninitialized_Warnings All warnings (new ones prefixed by >>): drivers/media/dvb-frontends/au8522_decoder.c: In function 'au8522_probe': >> drivers/media/dvb-frontends/au8522_decoder.c:779:3: warning: 'demod_config' >> may be used uninitialized in this function [-Wmaybe-uninitialized] kfree(demod_config); ^ vim +/demod_config +779 drivers/media/dvb-frontends/au8522_decoder.c 5a4bdb4b drivers/media/dvb-frontends/au8522_decoder.c Hans Verkuil 2013-02-15 763 hdl = &state->hdl; 5a4bdb4b drivers/media/dvb-frontends/au8522_decoder.c Hans Verkuil 2013-02-15 764 v4l2_ctrl_handler_init(hdl, 4); 5a4bdb4b drivers/media/dvb-frontends/au8522_decoder.c Hans Verkuil 2013-02-15 765 v4l2_ctrl_new_std(hdl, &au8522_ctrl_ops, 5a4bdb4b drivers/media/dvb-frontends/au8522_decoder.c Hans Verkuil 2013-02-15 766 V4L2_CID_BRIGHTNESS, 0, 255, 1, 109); 5a4bdb4b drivers/media/dvb-frontends/au8522_decoder.c Hans Verkuil 2013-02-15 767 v4l2_ctrl_new_std(hdl, &au8522_ctrl_ops, 5a4bdb4b drivers/media/dvb-frontends/au8522_decoder.c Hans Verkuil 2013-02-15 768 V4L2_CID_CONTRAST, 0, 255, 1, 5a4bdb4b drivers/media/dvb-frontends/au8522_decoder.c Hans Verkuil 2013-02-15 769 AU8522_TVDEC_CONTRAST_REG00BH_CVBS); 5a4bdb4b drivers/media/dvb-frontends/au8522_decoder.c Hans Verkuil 2013-02-15 770 v4l2_ctrl_new_std(hdl, &au8522_ctrl_ops, 5a4bdb4b drivers/media/dvb-frontends/au8522_decoder.c Hans Verkuil 2013-02-15 771 V4L2_CID_SATURATION, 0, 255, 1, 128); 5a4bdb4b drivers/media/dvb-frontends/au8522_decoder.c Hans Verkuil 2013-02-15 772 v4l2_ctrl_new_std(hdl, &au8522_ctrl_ops, 5a4bdb4b drivers/media/dvb-frontends/au8522_decoder.c Hans Verkuil 2013-02-15 773 V4L2_CID_HUE, -32768, 32767, 1, 0); 5a4bdb4b drivers/media/dvb-frontends/au8522_decoder.c Hans Verkuil 2013-02-15 774 sd->ctrl_handler = hdl; 5a4bdb4b drivers/media/dvb-frontends/au8522_decoder.c Hans Verkuil 2013-02-15 775 if (hdl->error) { 5a4bdb4b drivers/media/dvb-frontends/au8522_decoder.c Hans Verkuil 2013-02-15 776 int err = hdl->error; 5a4bdb4b drivers/media/dvb-frontends/au8522_decoder.c Hans Verkuil 2013-02-15 777 5a4bdb4b drivers/media/dvb-frontends/au8522_decoder.c Hans Verkuil 2013-02-15 778 v4l2_ctrl_handler_free(hdl); 5a4bdb4b drivers/media/dvb-frontends/au8522_decoder.c Hans Verkuil 2013-02-15 @779 kfree(demod_config); 5a4bdb4b drivers/media/dvb-frontends/au8522_decoder.c Hans Verkuil 2013-02-15 780 kfree(state); 5a4bdb4b drivers/media/dvb-frontends/au8522_decoder.c Hans Verkuil 2013-02-15 781 return err; 5a4bdb4b drivers/media/dvb-frontends/au8522_decoder.c Hans Verkuil 2013-02-15 782 } 5a4bdb4b drivers/media/dvb-frontends/au8522_decoder.c Hans Verkuil 2013-02-15 783 968cf782 drivers/media/dvb/frontends/au8522_decoder.c Devin Heitmueller 2009-03-11 784 state->c = client; f2fd7ce6 drivers/media/dvb-frontends/au8522_decoder.c Mauro Carvalho Chehab 2014-06-08 785 state->std = V4L2_STD_NTSC_M; 968cf782 drivers/media/dvb/frontends/au8522_decoder.c Devin Heitmueller 2009-03-11 786 state->vid_input = AU8522_COMPOSITE_CH1; 968cf782 drivers/media/dvb/frontends/au8522_decoder.c Devin Heitmueller 2009-03-11 787 state->aud_input = AU8522_AUDIO_NONE; :::::: The code at line 779 was first introduced by commit :::::: 5a4bdb4b34b90655891f627679bbba0ed9791c2e [media] au8522_decoder: convert to the control framework :::::: TO: Hans Verkuil <hans.verk...@cisco.com> :::::: CC: Mauro Carvalho Chehab <mche...@redhat.com> --- 0-DAY kernel test infrastructure Open Source Technology Center https://lists.01.org/pipermail/kbuild-all Intel Corporation
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