Seg fault on trying to list board

[vinodkoul]

I have a new ykush3 board and when listing it gives me seg fault. with sudo that is not the case:
sudo ykushcmd ykush3 -l

Attached YKUSH3 Boards:

1. Board found with serial number: Y3004047

$ ykushcmd ykush3 -l

Attached YKUSH3 Boards:
Segmentation fault (core dumped)

dmesg shows:
[7951105.281108] usb 1-2.4.4.1.4: New USB device found, idVendor=04d8, idProduct=f11b, bcdDevice= 0.01
[7951105.281115] usb 1-2.4.4.1.4: New USB device strings: Mfr=1, Product=2, SerialNumber=3
[7951105.281117] usb 1-2.4.4.1.4: Product: YKUSH3
[7951105.281119] usb 1-2.4.4.1.4: Manufacturer: Yepkit Lda.
[7951105.281120] usb 1-2.4.4.1.4: SerialNumber: Y3004047
[7951105.381707] hid-generic 0003:04D8:F11B.0005: hiddev98,hidraw2: USB HID v1.11 Device [Yepkit Lda. YKUSH3] on usb-0000:06:00.1-2.4.4.1.4/input0
[7951105.457526] usb 1-2.4.4.1.5: new high-speed USB device number 6 using xhci_hcd
[7951105.549610] usb 1-2.4.4.1.5: New USB device found, idVendor=0424, idProduct=2740, bcdDevice= 2.00
[7951105.549617] usb 1-2.4.4.1.5: New USB device strings: Mfr=1, Product=2, SerialNumber=0
[7951105.549619] usb 1-2.4.4.1.5: Product: Hub Controller
[7951105.549621] usb 1-2.4.4.1.5: Manufacturer: Microchip Tech
[7951113.801263] ykushcmd[3900225]: segfault at ffffffffffffffd0 ip 00007fdadaf4a268 sp 00007ffe6a0c22e0 error 5 in libusb-1.0.so.0.3.0[7fdadaf3e000+f000]
[7951113.801268] Code: 24 18 31 c0 48 85 ff 0f 84 af 01 00 00 48 89 fd 48 8d 0d 21 2e 00 00 48 8d 15 9c 79 00 00 31 ff be 04 00 00 00 e8 78 58 ff ff <48> 8b 45 40 4c 8b 60 30 41 8b bc 24 44 01 00 00 e8 93 49 ff ff 48

I am on X64 machine, with
$ uname -r
5.16.15-101.fc34.x86_64

[nmichaels-qualinx]

I had the same problem; running as root appeared to fix it. It would be nice if there were a udev file that came with this repo that could obviate the need to do that.

[scottw-finao]

ditto and bump for nmichaels-qualinx comment.

[scottw-finao]

It would be nice if there were a udev file that came with this repo that could obviate the need to do that.

fyi, I did find this:

install_udev.sh

# /etc/udev/rules.d/99-ykush.rules
# udev rules for Yepkit Ykush power switching USB hub
ACTION!="add|change", GOTO="ykush_end"

SUBSYSTEMS=="usb", ATTR{manufacturer}=="Yepkit Lda.", ATTR{product}=="YKUSH", GROUP="dialout"

LABEL="ykush_end"