4.9-rc + usb + asus a7n8x == bad news

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To: freebsd-stable@freebsd.org
Date: Fri, 03 Oct 2003 19:44:54 +1000

Hi! Just before we start, this is not the "USB hang on boot" problem. OK?

This post got rather long, so I'll summaries it all in a sentence here:

  With FreeBSD 4.9-rc on an ASUS A7N8X with a cheapo memory stick, simply
  plugging it in and taking it out a couple of times is a guaranteed panic.

I use only one USB device, a cheapo USB memory stick, which I recently
bought on a whim. When things work, it identifies as:

umass0: IMGSYS-3 Security X-Disk V1.02 , rev 1.10/2.01, addr 3
da0 at umass-sim0 bus 0 target 0 lun 0
da0: <GENERIC USB FLASH DISK 0201> Removable Direct Access SCSI-0 device
da0: 650KB/s transfers
da0: 15MB (32000 512 byte sectors: 64H 32S/T 15C)

I tried it on a 4.7 machine and although it probes and attaches OK, it can't
be read (returns EIO) and the console prints "da0: reading primary partition
table: error reading fsbn 0".

For no particular reason, I unplugged it and plugged it in again a few
times relatively quickly. I was rewarded with a kernel panic. So, USB
on 4.7 is not robust even if I could ever get it to work. 4.9-rc isn't
any improvement, as you can read below.

For my subsequent tests, I used an Asus A7N8X Deluxe based machine that I
have installed first 4.9-prerelease, now 4.9-rc on. It probes like this
(I'll go the ultra-verbose route in case any of the extra fluff matters):

Copyright (c) 1992-2003 The FreeBSD Project.
Copyright (c) 1979, 1980, 1983, 1986, 1988, 1989, 1991, 1992, 1993, 1994
        The Regents of the University of California. All rights reserved.
FreeBSD 4.9-RC #1: Fri Oct 3 12:17:38 EST 2003
    mckay@water.home:/usr/obj/usr/4.9-rc/sys/GENERIC
Timecounter "i8254" frequency 1193182 Hz
CPU: AMD Athlon(tm) XP 2600+ (2079.56-MHz 686-class CPU)
  Origin = "AuthenticAMD" Id = 0x681 Stepping = 1
  Features=0x383fbff<FPU,VME,DE,PSE,TSC,MSR,PAE,MCE,CX8,APIC,SEP,MTRR,PGE,MCA,CMOV,PAT,PSE36,MMX,FXSR,SSE>
  AMD Features=0xc0400000<AMIE,DSP,3DNow!>
real memory = 1073676288 (1048512K bytes)
avail memory = 1039683584 (1015316K bytes)
Preloaded elf kernel "kernel" at 0xc053e000.
Pentium Pro MTRR support enabled
md0: Malloc disk
Using $PIR table, 11 entries at 0xc00fdeb0
npx0: <math processor> on motherboard
npx0: INT 16 interface
pcib0: <Host to PCI bridge> on motherboard
pci0: <PCI bus> on pcib0
pci0: <unknown card> (vendor=0x10de, dev=0x01eb) at 0.1
pci0: <unknown card> (vendor=0x10de, dev=0x01ee) at 0.2
pci0: <unknown card> (vendor=0x10de, dev=0x01ed) at 0.3
pci0: <unknown card> (vendor=0x10de, dev=0x01ec) at 0.4
pci0: <unknown card> (vendor=0x10de, dev=0x01ef) at 0.5
isab0: <PCI to ISA bridge (vendor=10de device=0060)> at device 1.0 on pci0
isa0: <ISA bus> on isab0
pci0: <unknown card> (vendor=0x10de, dev=0x0064) at 1.1
ohci0: <OHCI (generic) USB controller> mem 0xeb080000-0xeb080fff irq 11 at device 2.0 on pci0
usb0: OHCI version 1.0, legacy support
usb0: SMM does not respond, resetting
usb0: <OHCI (generic) USB controller> on ohci0
usb0: USB revision 1.0
uhub0: (0x10de) OHCI root hub, class 9/0, rev 1.00/1.00, addr 1
uhub0: 3 ports with 3 removable, self powered
ohci1: <OHCI (generic) USB controller> mem 0xeb083000-0xeb083fff irq 11 at device 2.1 on pci0
usb1: OHCI version 1.0, legacy support
usb1: SMM does not respond, resetting
usb1: <OHCI (generic) USB controller> on ohci1
usb1: USB revision 1.0
uhub1: (0x10de) OHCI root hub, class 9/0, rev 1.00/1.00, addr 1
uhub1: 3 ports with 3 removable, self powered
pci0: <USB controller> at 2.2 irq 5
pci0: <unknown card> (vendor=0x10de, dev=0x0066) at 4.0 irq 5
pci0: <unknown card> (vendor=0x10de, dev=0x006b) at 5.0 irq 5
pci0: <unknown card> (vendor=0x10de, dev=0x006a) at 6.0 irq 11
pcib1: <PCI to PCI bridge (vendor=10de device=006c)> at device 8.0 on pci0
pci1: <PCI bus> on pcib1
atapci0: <Promise TX2 ATA100 controller> port 0xb000-0xb00f,0xac00-0xac03,0xa800-0xa807,0xa400-0xa403,0xa000-0xa007 mem 0xe8000000-0xe800ffff irq 11 at device 7.0 on pci1
ata2: at 0xa000 on atapci0
ata3: at 0xa800 on atapci0
pci1: <NVidia Riva Ultra Vanta TNT2 graphics accelerator> at 10.0 irq 5
atapci1: <Generic PCI ATA controller> port 0xf000-0xf00f at device 9.0 on pci0
ata0: at 0x1f0 irq 14 on atapci1
ata1: at 0x170 irq 15 on atapci1
pcib2: <PCI to PCI bridge (vendor=10de device=006d)> at device 12.0 on pci0
pci2: <PCI bus> on pcib2
xl0: <3Com 3c920B-EMB Integrated Fast Etherlink XL> port 0xc000-0xc07f mem 0xea000000-0xea00007f irq 11 at device 1.0 on pci2
xl0: Ethernet address: 00:26:54:0e:71:f1
miibus0: <MII bus> on xl0
ukphy0: <Generic IEEE 802.3u media interface> on miibus0
ukphy0: 10baseT, 10baseT-FDX, 100baseTX, 100baseTX-FDX, auto
fwohci0: vendor=10de, dev=6e
fwohci0: <1394 Open Host Controller Interface> mem 0xeb087000-0xeb08703f,0xeb086000-0xeb0867ff irq 11 at device 13.0 on pci0
fwohci0: OHCI version 1.10 (ROM=0)
fwohci0: No. of Isochronous channel is 4.
fwohci0: EUI64 00:e0:18:00:00:22:9b:d0
fwohci0: Phy 1394a available S400, 2 ports.
fwohci0: Link S400, max_rec 2048 bytes.
firewire0: <IEEE1394(FireWire) bus> on fwohci0
if_fwe0: <Ethernet over FireWire> on firewire0
if_fwe0: Fake Ethernet address: 02:e0:18:22:9b:d0
sbp0: <SBP2/SCSI over firewire> on firewire0
fwohci0: Initiate bus reset
fwohci0: BUS reset
fwohci0: node_id=0xc800ffc0, gen=1, CYCLEMASTER mode
firewire0: 1 nodes, maxhop <= 0, cable IRM = 0 (me)
firewire0: bus manager 0 (me)
pcib3: <PCI to PCI bridge (vendor=10de device=01e8)> at device 30.0 on pci0
pci3: <PCI bus> on pcib3
orm0: <Option ROMs> at iomem 0xc0000-0xca7ff,0xcc000-0xcffff,0xd0000-0xd17ff,0xd2000-0xda7ff on isa0
pmtimer0 on isa0
fdc0: <NEC 72065B or clone> at port 0x3f0-0x3f5,0x3f7 irq 6 drq 2 on isa0
fdc0: FIFO enabled, 8 bytes threshold
fd0: <1440-KB 3.5" drive> on fdc0 drive 0
atkbdc0: <Keyboard controller (i8042)> at port 0x60,0x64 on isa0
atkbd0: <AT Keyboard> flags 0x1 irq 1 on atkbdc0
kbd0 at atkbd0
psm0: <PS/2 Mouse> irq 12 on atkbdc0
psm0: model Generic PS/2 mouse, device ID 0
vga0: <Generic ISA VGA> at port 0x3c0-0x3df iomem 0xa0000-0xbffff on isa0
sc0: <System console> at flags 0x100 on isa0
sc0: VGA <16 virtual consoles, flags=0x300>
sio0 at port 0x3f8-0x3ff irq 4 flags 0x10 on isa0
sio0: type 16550A
sio1 at port 0x2f8-0x2ff irq 3 on isa0
sio1: type 16550A
ppc0: <Parallel port> at port 0x378-0x37f irq 7 on isa0
ppc0: SMC-like chipset (ECP/EPP/PS2/NIBBLE) in COMPATIBLE mode
ppc0: FIFO with 16/16/16 bytes threshold
lpt0: <Printer> on ppbus0
lpt0: Interrupt-driven port
ppi0: <Parallel I/O> on ppbus0
plip0: <PLIP network interface> on ppbus0
ata2-slave: ATA identify retries exceeded
ar0: 76319MB <ATA RAID1 array> [9729/255/63] status: READY subdisks:
0 READY ad4: 76319MB <WDC WD800JB-00ETA0> [155061/16/63] at ata2-master UDMA100
1 READY ad6: 76319MB <WDC WD800JB-00ETA0> [155061/16/63] at ata3-master UDMA100
acd0: CDROM <GCR-8523B> at ata1-slave PIO4
Mounting root from ufs:/dev/ar0s1a

There are several odd things here. First, FreeBSD finds two USB controllers
which 3 ports each. The BIOS views this as three USB controllers presumably
of 2 ports each, two of them OHCI 1.0/1.1, one of them EHCI 2.0. The EHCI
one isn't seen.

There's a long and tedious pause after this line:

ata0: at 0x1f0 irq 14 on atapci1

There are no disks attached to this controller. They are on the Promise
RAID card.

There are a lot of "pci0: <unknown card>" entries. One of these would
be the unsupported network port (there's a 2nd supported network port)
but I have no idea what the rest of them could be as there are no extra
cards in this machine.

Anyway, back to USB stuff: I tried the USB memory stick and on the first
try, it worked:

umass0: IMGSYS-3 Security X-Disk V1.02 , rev 1.10/2.01, addr 2
da0 at umass-sim0 bus 0 target 0 lun 0
da0: <GENERIC USB FLASH DISK 0201> Removable Direct Access SCSI-0 device
da0: 650KB/s transfers
da0: 15MB (32000 512 byte sectors: 64H 32S/T 15C)

I did some transfers (works nicely at 1MB/s), then unplugged:

umass0: at uhub0 port 2 (addr 2) disconnected
(da0:umass-sim0:0:0:0): lost device
(da0:umass-sim0:0:0:0): removing device entry
umass0: detached

The next try wasn't so good:

umass0: BBB reset failed, TIMEOUT
umass0: BBB bulk-in clear stall failed, TIMEOUT
umass0: BBB bulk-out clear stall failed, TIMEOUT
(da0:umass-sim0:0:0:0): Synchronize cache failed, status == 0x4, scsi status == 0x0
umass0: BBB reset failed, TIMEOUT
umass0: BBB bulk-in clear stall failed, TIMEOUT
umass0: BBB bulk-out clear stall failed, TIMEOUT
umass0: BBB reset failed, TIMEOUT
umass0: BBB bulk-in clear stall failed, TIMEOUT

Then the machine paniced, but wedged so badly it wouldn't dump core.

I tried several other times, and often simply plugging in the device
results in a panic and wedge without a core dump. I can't even scroll
the screen back to get a better look at what killed it.

I rebuilt the kernel with DDB and now when it panics, I can at least
type things. Typing "trace" gives me:

Fatal trap 12: page fault while in kernel mode, etc, etc, etc. So even
DDB has let me down.

Apart from this USB panic the machine is fast and stable. Buildworld
takes 23 minutes and always works. So generally speaking the hardware
is sound.

Where do I go from here?

Stephen.
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• Previous message: Seva Fwd: "Re: GNOME 2 port is broken?"
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