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Linux x86_64; rv:102.0) Gecko/20100101 Thunderbird/102.10.0 Subject: [PATCH] ASoC: SOF: topology: Move a variable assignment behind condition checks in sof_dai_load() Content-Language: en-GB From: Markus Elfring To: kernel-janitors@vger.kernel.org, alsa-devel@alsa-project.org, sound-open-firmware@alsa-project.org, Bard Liao , Daniel Baluta , Jaroslav Kysela , Kai Vehmanen , Keyon Jie , Liam Girdwood , Mark Brown , Peter Ujfalusi , Pierre-Louis Bossart , Ranjani Sridharan , Takashi Iwai References: <40c60719-4bfe-b1a4-ead7-724b84637f55@web.de> <1a11455f-ab57-dce0-1677-6beb8492a257@web.de> In-Reply-To: <1a11455f-ab57-dce0-1677-6beb8492a257@web.de> X-Provags-ID: V03:K1:Jl8V/9KAdzFRpvpfkQ77MacaWQTbsQVWDIxp9a6wDHu/uFJ6E0K wrnq8t9va+6xer9T+IgUPfTITJurni3ae6KdAmI2E+md4NCvSinWzw3+xvTc/RDb28CUj4w HNwdAU9Sim6wlfoLqbVFKie1SgubPls8/hPURw/Gqew3Lxco2rtWKomirG6tPQOVjlRtn4C htR1uE0iGve8rHfDMe2WA== UI-OutboundReport: notjunk:1;M01:P0:1rUQBhxaU1g=;htIlgbUHh7Ouq5VoS3wyz8BV2jR ARn+fkYyic62xVTX7XdqFjZkl8s2ekhbbUQs91Ve177CSlIj4SYljG9CL5gCOxurZE4jD2cOT xr7aQaaQ2O4Gf0Rqtu9Uwl4a1SgRnPEU+5NjHOAINDCi2cSPRAIZNk6IlsPLfT9s2R7HZb1Je l6wrvL5c3nBDz9HQWxe6Ddl/UfbzSEEEgFcCWCOU9Xe0h9BMjRDCuY7RUve9sZdyZFI5+et1V 7mBrHogZGTgrhgxUL/KGB73n14zdPabzkO97VkABEUK8LE1MnKQGY70ClmXdozcQvQl6jPW/c a2+E4aUi9lCosVTfn8lgTo/C5sCVjyumOBK4zQnjP8euEQSsRWYiqjRWd4fjOEjewFk7DpJUN zWSEQzdBMLGmwmzZpJ+BdEpY+2NFCiwlsoOLCBO1bqS9yOQUX4wEo+dneT5SL2IZgsYEQpbQL nYM6t+ApeMYnKQwL0xX+EDEAjY6Na9ADXL5yxYWNo6plCf9V6iptSDM4pIYfqmkj0819lrMmL tFkHxRX/7CayZASNnn7QA2QN5EL2s8A6lzX9t9ZykBYhEtBqME4Nv1wDIXyG8vOY5Xm2kYQG/ iHCdO5ByR8tz7r9sGn6glElofiqa3/4eTKNau6Heo0/o7ZCA/z5n2Y1qrJ/qsslljc5MpRe/y IwJZWT2e2DSVsCa6Wg/g4QFzXdHF3HLPr1n8zXquONmevH4bTJr1ADI2i9rMtelryJJGs0dyo k8D4GdtYLLMRJ7pOe02RxImCqz7RIFFjqffGf1d+q0ezTwtdV8lNvDVvKS9BUcPfdbTJNRrzX tx70Y9SCJlgIixKGD83vhg9NOOdaEsjOgaFxo9/DoF6UomkUjPHKeuykO1SlJ6bcuWnMUSNME gOpV7452deRG7GiGBOonwrTf1mRBu+sRJlRF4QmhA65NAmmJuGOmmF7Vp Message-ID-Hash: LSDEHHF6FIUCCX7TDJMILQZPN4YZNTCX X-Message-ID-Hash: LSDEHHF6FIUCCX7TDJMILQZPN4YZNTCX X-MailFrom: Markus.Elfring@web.de X-Mailman-Rule-Misses: dmarc-mitigation; no-senders; approved; emergency; loop; banned-address; member-moderation; header-match-alsa-devel.alsa-project.org-0; header-match-alsa-devel.alsa-project.org-1; nonmember-moderation; administrivia; implicit-dest; max-recipients; max-size; news-moderation; no-subject; digests; suspicious-header CC: cocci@inria.fr, LKML X-Mailman-Version: 3.3.8 Precedence: list List-Id: "Alsa-devel mailing list for ALSA developers - http://www.alsa-project.org" Archived-At: List-Archive: List-Help: List-Owner: List-Post: List-Subscribe: List-Unsubscribe: Date: Thu, 13 Apr 2023 13:56:44 +0200 The address of a data structure member was determined before a corresponding null pointer check in the implementation of the function “sof_dai_load”. Thus avoid the risk for undefined behaviour by moving the assignment for the local variable “private” behind some condition checks. This issue was detected by using the Coccinelle software. Fixes: c5232c0171428f005a3204e1c264231fb5999b28 ("ASoC: SOF: topology: parse and store d0i3_compatible flag") Signed-off-by: Markus Elfring --- sound/soc/sof/topology.c | 3 ++- 1 file changed, 2 insertions(+), 1 deletion(-) -- 2.40.0 diff --git a/sound/soc/sof/topology.c b/sound/soc/sof/topology.c index d3d536b0a8f5..3fffe3826160 100644 --- a/sound/soc/sof/topology.c +++ b/sound/soc/sof/topology.c @@ -1680,7 +1680,7 @@ static int sof_dai_load(struct snd_soc_component *scomp, int index, struct snd_sof_dev *sdev = snd_soc_component_get_drvdata(scomp); const struct sof_ipc_pcm_ops *ipc_pcm_ops = sof_ipc_get_ops(sdev, pcm); struct snd_soc_tplg_stream_caps *caps; - struct snd_soc_tplg_private *private = &pcm->priv; + struct snd_soc_tplg_private *private; struct snd_sof_pcm *spcm; int stream; int ret; @@ -1716,6 +1716,7 @@ static int sof_dai_load(struct snd_soc_component *scomp, int index, dai_drv->dobj.private = spcm; list_add(&spcm->list, &sdev->pcm_list); + private = &pcm->priv; ret = sof_parse_tokens(scomp, spcm, stream_tokens, ARRAY_SIZE(stream_tokens), private->array, le32_to_cpu(private->size));