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Thu, 27 Aug 2026 03:28:46 -0700 (PDT) Received: from Default ([2409:40f4:1015:7531:12c9:ad3b:96d3:4379]) by smtp.gmail.com with ESMTPSA id 5a478bee46e88-3285d1075ddsm5130994eec.29.2026.08.27.03.28.43 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Thu, 27 Aug 2026 03:28:46 -0700 (PDT) From: Jeffin Philip To: syzbot+b7fe2760ea6f1ee44b4d@syzkaller.appspotmail.com Cc: linux-kernel@vger.kernel.org, linux-sound@vger.kernel.org, syzkaller-bugs@googlegroups.com Subject: [syzbot] [sound?] BUG: unable to handle kernel NULL pointer dereference in snd_ctl_led_get Date: Thu, 27 Aug 2026 15:58:31 +0530 Message-ID: <20260827102831.21012-1-jeffinphilip14@gmail.com> X-Mailer: git-send-email 2.55.0 In-Reply-To: <6a9007b3.1d9ded08.62e62.00cd.GAE@google.com> References: <6a9007b3.1d9ded08.62e62.00cd.GAE@google.com> Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Transfer-Encoding: 8bit #syz test: upstream 818bebeb63dd diff --git a/sound/core/control_led.c b/sound/core/control_led.c index 8cbacee57ce7..f6a46ed97d37 100644 --- a/sound/core/control_led.c +++ b/sound/core/control_led.c @@ -114,13 +114,11 @@ static int snd_ctl_led_get(struct snd_ctl_led_ctl *lctl) info.id = kctl->id; info.id.index += lctl->index_offset; info.id.numid += lctl->index_offset; - result = kctl->info(kctl, &info); - if (result < 0) + if (!kctl->info || kctl->info(kctl, &info) return -1; memset(&value, 0, sizeof(value)); value.id = info.id; - result = kctl->get(kctl, &value); - if (result < 0) + if (!kctl->get || kctl->get(kctl, &value)) return -1; if (info.type == SNDRV_CTL_ELEM_TYPE_BOOLEAN || info.type == SNDRV_CTL_ELEM_TYPE_INTEGER) {