https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=291612
Bug ID: 291612
Summary: System hangs at ppt initialization with PCI‑USB
controller on FreeBSD 14.3
Product: Base System
Version: 14.3-RELEASE
Hardware: amd64
OS: Any
Status: New
Severity: Affects Some People
Priority: ---
Component: kern
Assignee: [email protected]
Reporter: [email protected]
After upgrading from FreeBSD 14.2 to 14.3, the system fails to boot when a
PCI‑USB controller card is installed and configured for passthrough (ppt). Boot
hangs at the moment of ppt initialization.
* On 14.2 the same hardware worked fine.
* On 14.3 the system hangs both in normal and single‑user mode.
* Removing the PCI‑USB card allows the system to boot normally.
Steps to Reproduce:
1. Install FreeBSD 14.3‑RELEASE.
2. Configure PCI‑USB controller for passthrough (pptdevs in /boot/loader.conf).
3. Boot system.
4. Observe hang during ppt initialization.
Expected Result:
System should boot successfully with PCI‑USB controller reserved for
passthrough.
Actual Result:
System hangs at ppt initialization.
Additional Information:
ppt0@pci0:1:0:0: class=0x0c0330 rev=0x02 hdr=0x00 vendor=0x1022
device=0x43bb subvendor=0x1b21 subdevice=0x1142
vendor = 'Advanced Micro Devices, Inc. [AMD]'
device = '300 Series Chipset USB 3.1 xHCI Controller'
class = serial bus
subclass = USB
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