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Tue, 20 Oct 2026 00:07:38 -0700 (PDT) Received: from localhost ([2c0f:3d00:6be:8900:ce5e:9212:ea4b:f30]) by smtp.gmail.com with ESMTPSA id 5b1f17b1804b1-4a1f2ca3666sm50510085e9.1.2026.10.20.00.07.37 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Tue, 20 Oct 2026 00:07:37 -0700 (PDT) Date: Tue, 20 Oct 2026 10:07:33 +0300 From: Dan Carpenter To: oe-kbuild@lists.linux.dev, cros-kernel-buildreports@googlegroups.com Cc: lkp@intel.com, oe-kbuild-all@lists.linux.dev Subject: [android-common:android12-kiwi-5.10 291/291] sound/usb/pcm.c:1053 snd_usb_pcm_prepare() warn: variable dereferenced before check 'subs->cur_audiofmt' (see line 1049) Message-ID: X-Mailing-List: oe-kbuild-all@lists.linux.dev List-Id: List-Post: List-Help: List-Subscribe: List-Unsubscribe: List-Owner: Precedence: list MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline tree: https://android.googlesource.com/kernel/common android12-kiwi-5.10 head: aaa0cf06ed53d6805dfa9099535f6fc052c49086 commit: 1eb185541df90c3f790676b9ac362683de3519f2 [291/291] ANDROID: sound: usb: Add vendor's hooking interface config: i386-randconfig-2200-20261020 (https://download.01.org/0day-ci/archive/20261020/202610200641.Ba5XQ2g4-lkp@intel.com/config) compiler: gcc-12 (Debian 12.4.0-5) 12.4.0 smatch: v0.5.0-9187-g5189e3fb If you fix the issue in a separate patch/commit (i.e. not just a new version of the same patch/commit), kindly add following tags | Reported-by: kernel test robot | Reported-by: Dan Carpenter | Closes: https://lore.kernel.org/r/202610200641.Ba5XQ2g4-lkp@intel.com/ smatch warnings: sound/usb/pcm.c:1053 snd_usb_pcm_prepare() warn: variable dereferenced before check 'subs->cur_audiofmt' (see line 1049) vim +1053 sound/usb/pcm.c e5779998bf8b70e Daniel Mack 2010-03-04 1041 static int snd_usb_pcm_prepare(struct snd_pcm_substream *substream) e5779998bf8b70e Daniel Mack 2010-03-04 1042 { e5779998bf8b70e Daniel Mack 2010-03-04 1043 struct snd_pcm_runtime *runtime = substream->runtime; e5779998bf8b70e Daniel Mack 2010-03-04 1044 struct snd_usb_substream *subs = runtime->private_data; 61a709504b07911 Dylan Reid 2012-09-18 1045 struct usb_host_interface *alts; 61a709504b07911 Dylan Reid 2012-09-18 1046 struct usb_interface *iface; 61a709504b07911 Dylan Reid 2012-09-18 1047 int ret; e5779998bf8b70e Daniel Mack 2010-03-04 1048 1eb185541df90c3 JaeHun Jung 2020-05-26 @1049 ret = snd_vendor_set_pcm_buf(subs->dev, subs->cur_audiofmt->iface); ^^^^^^^^^^^^^^^^^^^^^^^^^ Android adds this vender hook 1eb185541df90c3 JaeHun Jung 2020-05-26 1050 if (ret) 1eb185541df90c3 JaeHun Jung 2020-05-26 1051 return ret; 1eb185541df90c3 JaeHun Jung 2020-05-26 1052 e5779998bf8b70e Daniel Mack 2010-03-04 @1053 if (! subs->cur_audiofmt) { ^^^^^^^^^^^^^^^^^^ before the NULL check 0ba41d917eeb87f Takashi Iwai 2014-02-26 1054 dev_err(&subs->dev->dev, "no format is specified!\n"); e5779998bf8b70e Daniel Mack 2010-03-04 1055 return -ENXIO; e5779998bf8b70e Daniel Mack 2010-03-04 1056 } e5779998bf8b70e Daniel Mack 2010-03-04 1057 47ab154593827b1 Takashi Iwai 2015-08-25 1058 ret = snd_usb_lock_shutdown(subs->stream->chip); 47ab154593827b1 Takashi Iwai 2015-08-25 1059 if (ret < 0) -- 0-DAY CI Kernel Test Service https://github.com/intel/lkp-tests/wiki