https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=289929
Bug ID: 289929
Summary: ietp(4): Panic iicbus_get_addr failed for usbhid0 on
bus uhub0, error = 6
Product: Base System
Version: 16.0-CURRENT
Hardware: amd64
OS: Any
Status: New
Severity: Affects Some People
Priority: ---
Component: kern
Assignee: [email protected]
Reporter: [email protected]
Hi,
The FreeBSD kernel up to commit main-n280781-c2900b6e8255 panics when the ietp
module is loaded.
core.txt:
```
panic: iicbus_get_addr failed for usbhid0 on bus uhub1, error = 6
cpuid = 27
time = 1759269496
KDB: stack backtrace:
db_trace_self_wrapper() at db_trace_self_wrapper+0x2b/frame 0xfffffe02398257c0
vpanic() at vpanic+0x136/frame 0xfffffe02398258f0
panic() at panic+0x43/frame 0xfffffe0239825950
ietp_iic_probe() at ietp_iic_probe/frame 0xfffffe02398259c0
bus_generic_driver_added() at bus_generic_driver_added+0x45/frame
0xfffffe02398259e0
devclass_driver_added() at devclass_driver_added+0x29/frame 0xfffffe0239825a10
devclass_add_driver() at devclass_add_driver+0x138/frame 0xfffffe0239825a50
module_register_init() at module_register_init+0xb0/frame 0xfffffe0239825a80
linker_load_module() at linker_load_module+0xc56/frame 0xfffffe0239825d80
kern_kldload() at kern_kldload+0x16e/frame 0xfffffe0239825dd0
sys_kldload() at sys_kldload+0x59/frame 0xfffffe0239825e00
amd64_syscall() at amd64_syscall+0x169/frame 0xfffffe0239825f30
fast_syscall_common() at fast_syscall_common+0xf8/frame 0xfffffe0239825f30
--- syscall (304, FreeBSD ELF64, kldload), rip = 0x80be01d4e6a, rsp =
0x80bdd641758, rbp = 0x80bdd641cd0 ---
KDB: enter: panic
```
crash info:
```
Architecture: amd64
Architecture Version: 2
Dump Length: 2427355136
Blocksize: 512
Compression: none
Dumptime: 2025-10-01 01:28:16 +0330
Hostname: cornelia
Magic: FreeBSD Kernel Dump
Version String: FreeBSD 16.0-CURRENT #5 main-n280781-c2900b6e8255: Wed Oct 1
01:20:09 +0330 2025
root@cornelia:/usr/obj/usr/src/amd64.amd64/sys/GENERIC
Panic String: iicbus_get_addr failed for usbhid0 on bus uhub1, error = 6
Dump Parity: 1328606804
Bounds: 2
Dump Status: good
```
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