linux-kernel - Re: [PATCH 1/7] [media] pwc: hide unused label

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Date:	Tue, 26 Jan 2016 22:40:23 +0800
From:	kbuild test robot <lkp@...el.com>
To:	Arnd Bergmann <arnd@...db.de>
Cc:	kbuild-all@...org, Hans de Goede <hdegoede@...hat.com>,
	Mauro Carvalho Chehab <mchehab@....samsung.com>,
	linux-arm-kernel@...ts.infradead.org,
	Arnd Bergmann <arnd@...db.de>,
	Hans Verkuil <hans.verkuil@...co.com>,
	linux-media@...r.kernel.org, linux-kernel@...r.kernel.org
Subject: Re: [PATCH 1/7] [media] pwc: hide unused label

Hi Arnd,

[auto build test ERROR on linuxtv-media/master]
[also build test ERROR on v4.5-rc1 next-20160125]
[if your patch is applied to the wrong git tree, please drop us a note to help improving the system]

url:    https://github.com/0day-ci/linux/commits/Arnd-Bergmann/pwc-hide-unused-label/20160126-221727
base:   git://linuxtv.org/media_tree.git master
config: xtensa-allyesconfig (attached as .config)
reproduce:
        wget https://git.kernel.org/cgit/linux/kernel/git/wfg/lkp-tests.git/plain/sbin/make.cross -O ~/bin/make.cross
        chmod +x ~/bin/make.cross
        # save the attached .config to linux build tree
        make.cross ARCH=xtensa 

All errors (new ones prefixed by >>):

   drivers/media/usb/pwc/pwc-if.c: In function 'usb_pwc_probe':
>> drivers/media/usb/pwc/pwc-if.c:1092:3: error: label 'err_video_unreg' used but not defined
      goto err_video_unreg;
      ^

vim +/err_video_unreg +1092 drivers/media/usb/pwc/pwc-if.c

479567ce3 drivers/media/video/pwc/pwc-if.c Hans Verkuil    2010-09-12  1086  
e32a7eccd drivers/media/video/pwc/pwc-if.c Nam Phạm Thành  2009-01-12  1087  #ifdef CONFIG_USB_PWC_INPUT_EVDEV
e32a7eccd drivers/media/video/pwc/pwc-if.c Nam Phạm Thành  2009-01-12  1088  	/* register webcam snapshot button input device */
e32a7eccd drivers/media/video/pwc/pwc-if.c Nam Phạm Thành  2009-01-12  1089  	pdev->button_dev = input_allocate_device();
e32a7eccd drivers/media/video/pwc/pwc-if.c Nam Phạm Thành  2009-01-12  1090  	if (!pdev->button_dev) {
89dec01b7 drivers/media/video/pwc/pwc-if.c Dmitry Torokhov 2009-08-14  1091  		rc = -ENOMEM;
89dec01b7 drivers/media/video/pwc/pwc-if.c Dmitry Torokhov 2009-08-14 @1092  		goto err_video_unreg;
e32a7eccd drivers/media/video/pwc/pwc-if.c Nam Phạm Thành  2009-01-12  1093  	}
e32a7eccd drivers/media/video/pwc/pwc-if.c Nam Phạm Thành  2009-01-12  1094  
89dec01b7 drivers/media/video/pwc/pwc-if.c Dmitry Torokhov 2009-08-14  1095  	usb_make_path(udev, pdev->button_phys, sizeof(pdev->button_phys));

:::::: The code at line 1092 was first introduced by commit
:::::: 89dec01b7e251697720ac3d6a5310d72359eba69 V4L/DVB (12489): pwc - fix few use-after-free and memory leaks

:::::: TO: Dmitry Torokhov <dmitry.torokhov@...il.com>
:::::: CC: Mauro Carvalho Chehab <mchehab@...hat.com>

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