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[2001:14bb:1a1:e562:9c04:4392:8e5b:bf0f]) by smtp.gmail.com with ESMTPSA id 2adb3069b0e04-5a8bdd67998sm1269165e87.15.2026.05.10.22.17.09 for (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Sun, 10 May 2026 22:17:10 -0700 (PDT) Message-ID: Subject: Linux 7.1-rc3 regression (Bluetooth) From: markus.suvanto@gmail.com To: linux-kernel@vger.kernel.org Date: Mon, 11 May 2026 08:17:08 +0300 Content-Type: text/plain; charset="UTF-8" Content-Transfer-Encoding: quoted-printable User-Agent: Evolution 3.58.3 Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Hello I upgrade 7.1-rc2 to 7.1-rc3. After that bluetooth didn't start hci0: Failed to send wmt func ctrl (-22) My fix was to revert commit 634a4408c0615c523cf7531790f4f14a422b9206 -Markus Suvanto commit 994246ea1eed9029d648b28a9828359f5046173e (HEAD -> master) Author: Markus Suvanto Date: Mon May 11 07:29:47 2026 +0300 Revert "Bluetooth: btmtk: validate WMT event SKB length before struct a= ccess" =20 This reverts commit 634a4408c0615c523cf7531790f4f14a422b9206. commit 5d6919055dec134de3c40167a490f33c74c12581 (tag: v7.1-rc3, origin/mast= er, origin/HEAD) Author: Linus Torvalds Date: Sun May 10 14:08:09 2026 -0700 Linux 7.1-rc3 Lenovo ThinkPad T14s Gen 1 (20UJ) AMD Ryzen 5 PRO 4650U=20 Not working dmesg: masu@t470 ~ % grep Bluetoot dmesg_7.1.0-rc3=20 [ 4.229749] Bluetooth: Core ver 2.22 [ 4.232923] Bluetooth: HCI device and connection manager initialized [ 4.233081] Bluetooth: HCI socket layer initialized [ 4.233227] Bluetooth: L2CAP socket layer initialized [ 4.233236] Bluetooth: SCO socket layer initialized [ 4.413060] Bluetooth: hci0: HW/SW Version: 0x008a008a, Build Time: 2025= 1223091725 [ 6.142372] Bluetooth: BNEP (Ethernet Emulation) ver 1.3 [ 6.142384] Bluetooth: BNEP filters: protocol multicast [ 6.142393] Bluetooth: BNEP socket layer initialized [ 7.727087] Bluetooth: hci0: Failed to send wmt func ctrl (-22) [ 7.727140] Bluetooth: hci0: HCI Enhanced Setup Synchronous Connection c= ommand is advertised, but not supported. Working dmesg: masu@t470 ~ % grep Bluetoot dmesg_7.1.0-rc3-00001-g994246ea1eed =20 [ 4.296358] Bluetooth: Core ver 2.22 [ 4.296385] Bluetooth: HCI device and connection manager initialized [ 4.296393] Bluetooth: HCI socket layer initialized [ 4.296399] Bluetooth: L2CAP socket layer initialized [ 4.296404] Bluetooth: SCO socket layer initialized [ 4.391514] Bluetooth: hci0: HW/SW Version: 0x008a008a, Build Time: 2025= 1223091725 [ 6.087152] Bluetooth: BNEP (Ethernet Emulation) ver 1.3 [ 6.087165] Bluetooth: BNEP filters: protocol multicast [ 6.087172] Bluetooth: BNEP socket layer initialized [ 7.591891] Bluetooth: hci0: Device setup in 3127955 usecs [ 7.591922] Bluetooth: hci0: HCI Enhanced Setup Synchronous Connection c= ommand is advertised, but not supported. [ 7.657339] Bluetooth: MGMT ver 1.23 [ 25.883135] Bluetooth: RFCOMM TTY layer initialized [ 25.883150] Bluetooth: RFCOMM socket layer initialized [ 25.883154] Bluetooth: RFCOMM ver 1.11