Re: kern/51357: cu(1) fails to connect, kills networking and is unkillable

[Roy Marples <roy%marples.name@localhost>]

On 25/07/2016 13:15, Martin Husemann wrote:
>  On Mon, Jul 25, 2016 at 11:55:00AM +0000, roy%marples.name@localhost wrote:
>  > $ cu -s 115200 -l ttyU2
>  
>  This works fine on most machines in -current, so this has to be something
>  with your concrete USB dongle, the USB host controller or interrupt
>  routing.
>  
>  Please provide more details.

The USB <-> RS232 connector is a StarTech ICUSB221F.

ehci1: handing over full speed device on port 2 to uhci3
uftdi0 at uhub4 port 2
uftdi0: FTDI FT232R USB UART, rev 2.00/6.00, addr 2
ucom2 at uftdi0 portno 1

$ dmesg | grep uhub4
uhub4 at usb4: vendor 8086 UHCI root hub, class 9/0, rev 1.00/1.00, addr 1
uhub4: 2 ports with 2 removable, self powered
uftdi0 at uhub4 port 2


$ dmesg | grep ehci
ehci0 at pci0 dev 26 function 7: vendor 8086 product 293c (rev. 0x03)
ehci0: interrupting at ioapic0 pin 23
ehci0: EHCI version 1.0
ehci0: companion controllers, 2 ports each: uhci0 uhci1 uhci2
usb3 at ehci0: USB revision 2.0
ehci1 at pci0 dev 29 function 7: vendor 8086 product 293a (rev. 0x03)
ehci1: interrupting at ioapic0 pin 19
ehci1: EHCI version 1.0
ehci1: companion controllers, 2 ports each: uhci3 uhci4 uhci5
usb7 at ehci1: USB revision 2.0
ehci0: handing over full speed device on port 3 to uhci1
ehci0: handing over full speed device on port 4 to uhci1
ehci1: handing over full speed device on port 2 to uhci3

$ dmesg | grep uhci
uhci0 at pci0 dev 26 function 0: vendor 8086 product 2937 (rev. 0x03)
uhci0: interrupting at ioapic0 pin 20
usb0 at uhci0: USB revision 1.0
uhci1 at pci0 dev 26 function 1: vendor 8086 product 2938 (rev. 0x03)
uhci1: interrupting at ioapic0 pin 21
usb1 at uhci1: USB revision 1.0
uhci2 at pci0 dev 26 function 2: vendor 8086 product 2939 (rev. 0x03)
uhci2: interrupting at ioapic0 pin 22
usb2 at uhci2: USB revision 1.0
ehci0: companion controllers, 2 ports each: uhci0 uhci1 uhci2
uhci3 at pci0 dev 29 function 0: vendor 8086 product 2934 (rev. 0x03)
uhci3: interrupting at ioapic0 pin 16
usb4 at uhci3: USB revision 1.0
uhci4 at pci0 dev 29 function 1: vendor 8086 product 2935 (rev. 0x03)
uhci4: interrupting at ioapic0 pin 17
usb5 at uhci4: USB revision 1.0
uhci5 at pci0 dev 29 function 2: vendor 8086 product 2936 (rev. 0x03)
uhci5: interrupting at ioapic0 pin 18
usb6 at uhci5: USB revision 1.0
ehci1: companion controllers, 2 ports each: uhci3 uhci4 uhci5
ehci0: handing over full speed device on port 3 to uhci1
ehci0: handing over full speed device on port 4 to uhci1
ehci1: handing over full speed device on port 2 to uhci3

$ pcictl pci0 list
000:00:0: Intel 82GM45 Host Bridge (host bridge, revision 0x07)
000:02:0: Intel 82GM45 Integrated Graphics Device (VGA display, revision
0x07)
000:02:1: Intel 82GM45 Integrated Graphics Device (miscellaneous
display, revision 0x07)
000:03:0: Intel product 2a44 (miscellaneous communications, revision 0x07)
000:03:3: Intel 82GM45 KT (serial communications, 16550-compat, revision
0x07)
000:25:0: Intel 82801I Mobile (AMT) LAN Controller (ethernet network,
revision 0x03)
000:26:0: Intel 82801I USB UHCI Controller (USB serial bus, UHCI,
revision 0x03)
000:26:1: Intel 82801I USB UHCI Controller (USB serial bus, UHCI,
revision 0x03)
000:26:2: Intel 82801I USB UHCI Controller (USB serial bus, UHCI,
revision 0x03)
000:26:7: Intel 82801I USB EHCI Controller (USB serial bus, EHCI,
revision 0x03)
000:27:0: Intel 82801I High Definition Audio Controller (mixed mode
multimedia, revision 0x03)
000:28:0: Intel 82801I PCI Express Port #1 (PCI bridge, revision 0x03)
000:28:1: Intel 82801I PCI Express Port #2 (PCI bridge, revision 0x03)
000:28:3: Intel 82801I PCI Express Port #4 (PCI bridge, revision 0x03)
000:28:4: Intel 82801I PCI Express Port #5 (PCI bridge, revision 0x03)
000:29:0: Intel 82801I USB UHCI Controller (USB serial bus, UHCI,
revision 0x03)
000:29:1: Intel 82801I USB UHCI Controller (USB serial bus, UHCI,
revision 0x03)
000:29:2: Intel 82801I USB UHCI Controller (USB serial bus, UHCI,
revision 0x03)
000:29:7: Intel 82801I USB EHCI Controller (USB serial bus, EHCI,
revision 0x03)
000:30:0: Intel 82801BAM Hub-PCI Bridge (PCI bridge, subtractive decode,
revision 0x93)
000:31:0: Intel 82801IEM LPC Interface Bridge (ISA bridge, revision 0x03)
000:31:2: Intel 82801I Mobile AHCI SATA Controller with 4 ports (SATA
mass storage, AHCI 1.0, revision 0x03)
000:31:3: Intel 82801I SMBus Controller (SMBus serial bus, revision 0x03)
003:00:0: Intel WiFi Link 5100 (miscellaneous network)
021:00:0: Ricoh 5C476 PCI-CardBus Bridge (CardBus bridge, revision 0xba)
021:00:1: Ricoh 5C832 PCI-SD/MMC/MMC+/MS/xD/Firewire (IEEE1394 serial
bus, OpenHCI, revision 0x04)
021:00:2: Ricoh 5C822 PCI-CardBus Bridge/MS/SD/MMC/SC (SD Host
Controller system, revision 0x21)
021:00:3: Ricoh 5C843 PCI-CardBus Bridge/SD/MMC/MMC+/MS/xD/Firewire
(miscellaneous system, revision 0x11)
021:00:4: Ricoh 5C592 PCI-CardBus Bridge/MS/SD/Firewire (miscellaneous
system, revision 0x11)
021:00:5: Ricoh xD-Picture Card Controller (miscellaneous system,
revision 0x11)

Is that enough information?

Roy