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Sat, 11 Apr 2026 12:41:30 +0000 (UTC) From: bugzilla-daemon@kernel.org To: linux-bluetooth@vger.kernel.org Subject: [Bug 221346] Bluetooth: btintel_pcie (8086:e476) may hang in shutdown path (synchronize_irq) during reboot stress test Date: Sat, 11 Apr 2026 12:41:30 +0000 X-Bugzilla-Reason: AssignedTo X-Bugzilla-Type: changed X-Bugzilla-Watch-Reason: None X-Bugzilla-Product: Drivers X-Bugzilla-Component: Bluetooth X-Bugzilla-Version: 2.5 X-Bugzilla-Keywords: X-Bugzilla-Severity: normal X-Bugzilla-Who: zhangzhigang1996@gmail.com X-Bugzilla-Status: NEW X-Bugzilla-Resolution: X-Bugzilla-Priority: P3 X-Bugzilla-Assigned-To: linux-bluetooth@vger.kernel.org X-Bugzilla-Flags: X-Bugzilla-Changed-Fields: cf_kernel_version Message-ID: In-Reply-To: References: Content-Type: text/plain; charset="UTF-8" Content-Transfer-Encoding: quoted-printable X-Bugzilla-URL: https://bugzilla.kernel.org/ Auto-Submitted: auto-generated Precedence: bulk X-Mailing-List: linux-bluetooth@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 https://bugzilla.kernel.org/show_bug.cgi?id=3D221346 Zhang Zhigang (zhangzhigang1996@gmail.com) changed: What |Removed |Added ---------------------------------------------------------------------------- Kernel Version| |6.18.1 --- Comment #1 from Zhang Zhigang (zhangzhigang1996@gmail.com) --- ### Additional system information #### Hardware ``` 00:14.3 Network controller [0280]: Intel Corporation Device [8086:e440] (rev 01) 00:14.7 Bluetooth [0d11]: Intel Corporation Device [8086:e476] (rev 01) ``` #### PCI device details ``` 00:14.7 Bluetooth [0d11]: Intel Corporation Device [8086:e476] (rev 01) Subsystem: Intel Corporation Device [8086:0011] Kernel driver in use: btintel_pcie Kernel modules: btintel_pcie ``` #### Loaded Bluetooth-related modules ``` btintel_pcie 45056 0 btintel 69632 1 btintel_pcie bluetooth 958464 43 btintel_pcie,btintel,bnep,rfcomm ``` #### Driver information ``` filename:=20=20=20=20=20=20 /lib/modules/6.18.1-01-perlis001-20260409003/kernel/drivers/bluetooth/btint= el_pcie.ko version: 0.1 description: Intel Bluetooth PCIe transport driver ver 0.1 ``` #### Kernel version ``` 6.18.1-01-perlis001-20260409003 ``` #### Firmware Available firmware files under /lib/firmware/intel/ (ibt-*.sfi / .ddc prese= nt) Note: No firmware loading messages observed in dmesg. #### dmesg (Bluetooth-related) ``` Bluetooth: RFCOMM TTY layer initialized Bluetooth: RFCOMM socket layer initialized Bluetooth: RFCOMM ver 1.11 ``` #### udev device path ``` /devices/pci0000:00/0000:00:14.7/bluetooth/hci0 ``` #### Interrupts ``` IR-PCI-MSIX-0000:00:14.7 btintel_pcie ``` #### Additional observations * systemd-udevd enters D state during shutdown * Issue disappears when btintel_pcie is unloaded or blacklisted * Problem reproducible under reboot stress test --=20 You may reply to this email to add a comment. 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