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* [Bug 220002] New: USB tethering fails with rndis_host on 6.14.2
@ 2025-04-10 23:11 bugzilla-daemon
  2025-04-11  5:09 ` [Bug 220002] " bugzilla-daemon
                   ` (5 more replies)
  0 siblings, 6 replies; 7+ messages in thread
From: bugzilla-daemon @ 2025-04-10 23:11 UTC (permalink / raw)
  To: linux-usb

https://bugzilla.kernel.org/show_bug.cgi?id=220002

            Bug ID: 220002
           Summary: USB tethering fails with rndis_host on 6.14.2
           Product: Drivers
           Version: 2.5
          Hardware: AMD
                OS: Linux
            Status: NEW
          Severity: normal
          Priority: P3
         Component: USB
          Assignee: drivers_usb@kernel-bugs.kernel.org
          Reporter: aminvandh@gmail.com
        Regression: No

After compiling from 6.14.1 to 6.14.2 my USB tether stopped working.
- Phone: Tested on two phones (samsung and xiaomi)
- Kernel: 6.14.2
- OS: centos stream

dmesg:
```
$ sudo dmesg | grep '5-1'
[ 4706.908695] usb 5-1: new high-speed USB device number 2 using xhci_hcd
[ 4707.040053] usb 5-1: New USB device found, idVendor=2717, idProduct=ff40,
bcdDevice= 5.15
[ 4707.040062] usb 5-1: New USB device strings: Mfr=1, Product=2,
SerialNumber=3
[ 4707.040064] usb 5-1: Product: Redmi Note 12
[ 4707.040066] usb 5-1: Manufacturer: Xiaomi
[ 4707.040067] usb 5-1: SerialNumber: d6a7620f
[ 4716.408590] usb 5-1: USB disconnect, device number 2
[ 4716.771173] usb 5-1: new high-speed USB device number 3 using xhci_hcd
[ 4716.900356] usb 5-1: New USB device found, idVendor=2717, idProduct=ff80,
bcdDevice= 5.15
[ 4716.900362] usb 5-1: New USB device strings: Mfr=1, Product=2,
SerialNumber=3
[ 4716.900364] usb 5-1: Product: Redmi Note 12
[ 4716.900365] usb 5-1: Manufacturer: Xiaomi
[ 4716.900367] usb 5-1: SerialNumber: d6a7620f
[ 4716.971029] rndis_host 5-1:1.0 wwan0: register 'rndis_host' at
usb-0000:0b:00.4-1, Mobile Broadband RNDIS device, 86:aa:5b:28:2a:ef
[ 4716.976223] rndis_host 5-1:1.0 wwp11s0f4u1: renamed from wwan0
[ 4751.690348] usb 5-1: USB disconnect, device number 3
[ 4751.690389] rndis_host 5-1:1.0 wwp11s0f4u1: unregister 'rndis_host'
usb-0000:0b:00.4-1, Mobile Broadband RNDIS device
[ 6113.354484] usb 5-1: new high-speed USB device number 4 using xhci_hcd
[ 6113.487020] usb 5-1: New USB device found, idVendor=2717, idProduct=ff40,
bcdDevice= 5.15
[ 6113.487026] usb 5-1: New USB device strings: Mfr=1, Product=2,
SerialNumber=3
[ 6113.487028] usb 5-1: Product: Redmi Note 12
[ 6113.487029] usb 5-1: Manufacturer: Xiaomi
[ 6113.487031] usb 5-1: SerialNumber: d6a7620f
[ 6124.087792] usb 5-1: USB disconnect, device number 4
[ 6124.442925] usb 5-1: new high-speed USB device number 5 using xhci_hcd
[ 6124.574687] usb 5-1: New USB device found, idVendor=2717, idProduct=ff80,
bcdDevice= 5.15
[ 6124.574704] usb 5-1: New USB device strings: Mfr=1, Product=2,
SerialNumber=3
[ 6124.574706] usb 5-1: Product: Redmi Note 12
[ 6124.574708] usb 5-1: Manufacturer: Xiaomi
[ 6124.574709] usb 5-1: SerialNumber: d6a7620f
[ 6124.624566] rndis_host 5-1:1.0 wwan0: register 'rndis_host' at
usb-0000:0b:00.4-1, Mobile Broadband RNDIS device, f2:00:f5:90:be:3a
[ 6124.631938] rndis_host 5-1:1.0 wwp11s0f4u1: renamed from wwan0
```

networking outputs:
```
$ ip link show wwp11s0f4u1
4: wwp11s0f4u1: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 qdisc fq_codel state
UNKNOWN mode DEFAULT group default qlen 1000
    link/ether f2:00:f5:90:be:3a brd ff:ff:ff:ff:ff:ff
    altname wwxf200f590be3a


$ ip addr show wwp11s0f4u1
4: wwp11s0f4u1: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 qdisc fq_codel state
UNKNOWN group default qlen 1000
    link/ether f2:00:f5:90:be:3a brd ff:ff:ff:ff:ff:ff
    altname wwxf200f590be3a
    inet6 2a02:4540:9025:d677:f000:f5ff:fe90:be3a/64 scope global dynamic
mngtmpaddr proto kernel_ra 
       valid_lft 7121sec preferred_lft 7121sec
    inet6 fe80::f000:f5ff:fe90:be3a/64 scope link proto kernel_ll 
       valid_lft forever preferred_lft forever
```

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2025-04-10 23:11 [Bug 220002] New: USB tethering fails with rndis_host on 6.14.2 bugzilla-daemon
2025-04-11  5:09 ` [Bug 220002] " bugzilla-daemon
2025-04-11 18:27 ` bugzilla-daemon
2025-04-11 21:31 ` bugzilla-daemon
2025-04-11 23:31 ` bugzilla-daemon
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