ehci panic using a logic analyzer on ugen(4)

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ehci panic using a logic analyzer on ugen(4)

Daniel Bolgheroni-10
>Synopsis: ehci panic using a logic analyzer on ugen(4)
>Category: <PR category (one line)>
>Environment:
        System      : OpenBSD 6.4
        Details     : OpenBSD 6.4-current (GENERIC.MP) #16: Sat Dec 15 09:36:44 -02 2018
                         [hidden email]:/sys/arch/amd64/compile/GENERIC.MP

        Architecture: OpenBSD.amd64
        Machine     : amd64
>Description:
        When using a generic logic analyzer with comms/sigrok/sigrok-cli, most
        of the captures gives a panic and drop the system into DDB.

        The probability of a panic is higher when using higher
        samplerates as described below.
>How-To-Repeat:
        Do a capture with something like this:

        $ sigrok-cli -d fx2lafw -o test.sr --time 10s -c samplerate=16m

        The panic is registered here:
        https://bolgh.com/ehci_panic.jpg

        Other notes:

        - To scan the device:
        $ sigrok-cli --scan
        The following devices were found:
        demo - Demo device with 12 channels: D0 D1 D2 D3 D4 D5 D6 D7 A0 A1 A2 A3
        ftdi-la - FTDI FT232R USB UART with 8 channels: TXD RXD RTS# CTS# DTR# DSR# DCD# RI#
        fx2lafw:conn=1.3 - Saleae Logic with 8 channels: D0 D1 D2 D3 D4 D5 D6 D7
        $

        - Sometimes a libusb error is thrown (LIBUSB_ERROR_IO):
        $ sigrok-cli --scan
        sr: testo: Failed to get product string descriptor: LIBUSB_ERROR_IO.
        The following devices were found:
        demo - Demo device with 12 channels: D0 D1 D2 D3 D4 D5 D6 D7 A0 A1 A2 A3
        ftdi-la - FTDI FT232R USB UART with 8 channels: TXD RXD RTS# CTS# DTR# DSR# DCD# RI#
        fx2lafw:conn=1.3 - Saleae Logic with 8 channels: D0 D1 D2 D3 D4 D5 D6 D7
        $
>Fix:
        Don't know.


dmesg:
OpenBSD 6.4-current (GENERIC.MP) #16: Sat Dec 15 09:36:44 -02 2018
    [hidden email]:/sys/arch/amd64/compile/GENERIC.MP
real mem = 8451125248 (8059MB)
avail mem = 8185696256 (7806MB)
mpath0 at root
scsibus0 at mpath0: 256 targets
mainbus0 at root
bios0 at mainbus0: SMBIOS rev. 2.6 @ 0xdae9c000 (64 entries)
bios0: vendor LENOVO version "8DET76WW (1.46 )" date 06/21/2018
bios0: LENOVO 4291MV7
acpi0 at bios0: rev 2
acpi0: sleep states S0 S3 S4 S5
acpi0: tables DSDT FACP SLIC SSDT SSDT SSDT HPET APIC MCFG ECDT ASF! TCPA SSDT SSDT DMAR UEFI UEFI UEFI
acpi0: wakeup devices LID_(S3) SLPB(S3) IGBE(S4) EXP4(S4) EXP7(S4) EHC1(S3) EHC2(S3) HDEF(S4)
acpitimer0 at acpi0: 3579545 Hz, 24 bits
acpihpet0 at acpi0: 14318179 Hz
acpimadt0 at acpi0 addr 0xfee00000: PC-AT compat
cpu0 at mainbus0: apid 0 (boot processor)
cpu0: Intel(R) Core(TM) i5-2520M CPU @ 2.50GHz, 2492.02 MHz, 06-2a-07
cpu0: FPU,VME,DE,PSE,TSC,MSR,PAE,MCE,CX8,APIC,SEP,MTRR,PGE,MCA,CMOV,PAT,PSE36,CFLUSH,DS,ACPI,MMX,FXSR,SSE,SSE2,SS,HTT,TM,PBE,SSE3,PCLMUL,DTES64,MWAIT,DS-CPL,VMX,SMX,EST,TM2,SSSE3,CX16,xTPR,PDCM,PCID,SSE4.1,SSE4.2,x2APIC,POPCNT,DEADLINE,AES,XSAVE,AVX,NXE,RDTSCP,LONG,LAHF,PERF,ITSC,IBRS,IBPB,STIBP,L1DF,SSBD,SENSOR,ARAT,XSAVEOPT,MELTDOWN
cpu0: 256KB 64b/line 8-way L2 cache
cpu0: smt 0, core 0, package 0
mtrr: Pentium Pro MTRR support, 10 var ranges, 88 fixed ranges
cpu0: apic clock running at 99MHz
cpu0: mwait min=64, max=64, C-substates=0.2.1.1.2, IBE
cpu1 at mainbus0: apid 1 (application processor)
cpu1: Intel(R) Core(TM) i5-2520M CPU @ 2.50GHz, 2491.90 MHz, 06-2a-07
cpu1: FPU,VME,DE,PSE,TSC,MSR,PAE,MCE,CX8,APIC,SEP,MTRR,PGE,MCA,CMOV,PAT,PSE36,CFLUSH,DS,ACPI,MMX,FXSR,SSE,SSE2,SS,HTT,TM,PBE,SSE3,PCLMUL,DTES64,MWAIT,DS-CPL,VMX,SMX,EST,TM2,SSSE3,CX16,xTPR,PDCM,PCID,SSE4.1,SSE4.2,x2APIC,POPCNT,DEADLINE,AES,XSAVE,AVX,NXE,RDTSCP,LONG,LAHF,PERF,ITSC,IBRS,IBPB,STIBP,L1DF,SSBD,SENSOR,ARAT,XSAVEOPT,MELTDOWN
cpu1: 256KB 64b/line 8-way L2 cache
cpu1: smt 1, core 0, package 0
cpu2 at mainbus0: apid 2 (application processor)
cpu2: Intel(R) Core(TM) i5-2520M CPU @ 2.50GHz, 2491.90 MHz, 06-2a-07
cpu2: FPU,VME,DE,PSE,TSC,MSR,PAE,MCE,CX8,APIC,SEP,MTRR,PGE,MCA,CMOV,PAT,PSE36,CFLUSH,DS,ACPI,MMX,FXSR,SSE,SSE2,SS,HTT,TM,PBE,SSE3,PCLMUL,DTES64,MWAIT,DS-CPL,VMX,SMX,EST,TM2,SSSE3,CX16,xTPR,PDCM,PCID,SSE4.1,SSE4.2,x2APIC,POPCNT,DEADLINE,AES,XSAVE,AVX,NXE,RDTSCP,LONG,LAHF,PERF,ITSC,IBRS,IBPB,STIBP,L1DF,SSBD,SENSOR,ARAT,XSAVEOPT,MELTDOWN
cpu2: 256KB 64b/line 8-way L2 cache
cpu2: smt 0, core 1, package 0
cpu3 at mainbus0: apid 3 (application processor)
cpu3: Intel(R) Core(TM) i5-2520M CPU @ 2.50GHz, 2491.90 MHz, 06-2a-07
cpu3: FPU,VME,DE,PSE,TSC,MSR,PAE,MCE,CX8,APIC,SEP,MTRR,PGE,MCA,CMOV,PAT,PSE36,CFLUSH,DS,ACPI,MMX,FXSR,SSE,SSE2,SS,HTT,TM,PBE,SSE3,PCLMUL,DTES64,MWAIT,DS-CPL,VMX,SMX,EST,TM2,SSSE3,CX16,xTPR,PDCM,PCID,SSE4.1,SSE4.2,x2APIC,POPCNT,DEADLINE,AES,XSAVE,AVX,NXE,RDTSCP,LONG,LAHF,PERF,ITSC,IBRS,IBPB,STIBP,L1DF,SSBD,SENSOR,ARAT,XSAVEOPT,MELTDOWN
cpu3: 256KB 64b/line 8-way L2 cache
cpu3: smt 1, core 1, package 0
ioapic0 at mainbus0: apid 2 pa 0xfec00000, version 20, 24 pins
acpimcfg0 at acpi0
acpimcfg0: addr 0xf8000000, bus 0-63
acpiec0 at acpi0
acpiprt0 at acpi0: bus 0 (PCI0)
acpiprt1 at acpi0: bus -1 (PEG_)
acpiprt2 at acpi0: bus 2 (EXP1)
acpiprt3 at acpi0: bus 3 (EXP2)
acpiprt4 at acpi0: bus 5 (EXP4)
acpiprt5 at acpi0: bus 13 (EXP5)
acpiprt6 at acpi0: bus -1 (EXP7)
acpicpu0 at acpi0: C3(350@104 io@0x415), C1(1000@1 halt), PSS
acpicpu1 at acpi0: C3(350@104 io@0x415), C1(1000@1 halt), PSS
acpicpu2 at acpi0: C3(350@104 io@0x415), C1(1000@1 halt), PSS
acpicpu3 at acpi0: C3(350@104 io@0x415), C1(1000@1 halt), PSS
acpipwrres0 at acpi0: PUBS, resource for EHC1, EHC2
acpitz0 at acpi0: critical temperature is 99 degC
acpibtn0 at acpi0: LID_
acpibtn1 at acpi0: SLPB
acpipci0 at acpi0 PCI0: 0x00000000 0x00000011 0x00000001
acpicmos0 at acpi0
acpibat0 at acpi0: BAT0 model "45N1023" serial 16065 type LION oem "SANYO"
acpiac0 at acpi0: AC unit online
acpithinkpad0 at acpi0
"IBM0079" at acpi0 not configured
"PNP0C14" at acpi0 not configured
"PNP0C14" at acpi0 not configured
acpidock0 at acpi0: GDCK docked (15)
acpivideo0 at acpi0: VID_
acpivout at acpivideo0 not configured
acpivideo1 at acpi0: VID_
cpu0: Enhanced SpeedStep 2492 MHz: speeds: 2501, 2500, 2200, 2000, 1800, 1600, 1400, 1200, 1000, 800 MHz
pci0 at mainbus0 bus 0
pchb0 at pci0 dev 0 function 0 "Intel Core 2G Host" rev 0x09
inteldrm0 at pci0 dev 2 function 0 "Intel HD Graphics 3000" rev 0x09
drm0 at inteldrm0
inteldrm0: msi
inteldrm0: 1366x768, 32bpp
wsdisplay0 at inteldrm0 mux 1: console (std, vt100 emulation)
wsdisplay0: screen 1-5 added (std, vt100 emulation)
"Intel 6 Series MEI" rev 0x04 at pci0 dev 22 function 0 not configured
em0 at pci0 dev 25 function 0 "Intel 82579LM" rev 0x04: msi, address f0:de:f1:7c:7b:f5
ehci0 at pci0 dev 26 function 0 "Intel 6 Series USB" rev 0x04: apic 2 int 16
usb0 at ehci0: USB revision 2.0
uhub0 at usb0 configuration 1 interface 0 "Intel EHCI root hub" rev 2.00/1.00 addr 1
azalia0 at pci0 dev 27 function 0 "Intel 6 Series HD Audio" rev 0x04: msi
azalia0: codecs: Conexant CX20590, Intel/0x2805, using Conexant CX20590
audio0 at azalia0
ppb0 at pci0 dev 28 function 0 "Intel 6 Series PCIE" rev 0xb4: msi
pci1 at ppb0 bus 2
ppb1 at pci0 dev 28 function 1 "Intel 6 Series PCIE" rev 0xb4: msi
pci2 at ppb1 bus 3
iwn0 at pci2 dev 0 function 0 "Intel WiFi Link 1000" rev 0x00: msi, MIMO 1T2R, BGS, address 74:e5:0b:19:5c:82
ppb2 at pci0 dev 28 function 3 "Intel 6 Series PCIE" rev 0xb4: msi
pci3 at ppb2 bus 5
ppb3 at pci0 dev 28 function 4 "Intel 6 Series PCIE" rev 0xb4: msi
pci4 at ppb3 bus 13
sdhc0 at pci4 dev 0 function 0 "Ricoh 5U823 SD/MMC" rev 0x04: apic 2 int 16
sdhc0: SDHC 3.0, 50 MHz base clock
sdmmc0 at sdhc0: 4-bit, sd high-speed, mmc high-speed, dma
ehci1 at pci0 dev 29 function 0 "Intel 6 Series USB" rev 0x04: apic 2 int 23
usb1 at ehci1: USB revision 2.0
uhub1 at usb1 configuration 1 interface 0 "Intel EHCI root hub" rev 2.00/1.00 addr 1
pcib0 at pci0 dev 31 function 0 "Intel QM67 LPC" rev 0x04
ahci0 at pci0 dev 31 function 2 "Intel 6 Series AHCI" rev 0x04: msi, AHCI 1.3
ahci0: port 0: 6.0Gb/s
scsibus1 at ahci0: 32 targets
sd0 at scsibus1 targ 0 lun 0: <ATA, WDC WDS120G1G0A-, Z331> SCSI3 0/direct fixed naa.5001b444a69bf89b
sd0: 114473MB, 512 bytes/sector, 234441648 sectors, thin
ichiic0 at pci0 dev 31 function 3 "Intel 6 Series SMBus" rev 0x04: apic 2 int 18
iic0 at ichiic0
spdmem0 at iic0 addr 0x50: 4GB DDR3 SDRAM PC3-10600 SO-DIMM
spdmem1 at iic0 addr 0x51: 4GB DDR3 SDRAM PC3-10600 SO-DIMM
isa0 at pcib0
isadma0 at isa0
pckbc0 at isa0 port 0x60/5 irq 1 irq 12
pckbd0 at pckbc0 (kbd slot)
wskbd0 at pckbd0: console keyboard, using wsdisplay0
pms0 at pckbc0 (aux slot)
wsmouse0 at pms0 mux 0
wsmouse1 at pms0 mux 0
pms0: Synaptics clickpad, firmware 8.0, 0x1e2b1 0x940300
pcppi0 at isa0 port 0x61
spkr0 at pcppi0
aps0 at isa0 port 0x1600/31
vmm0 at mainbus0: VMX/EPT
uhub2 at uhub0 port 1 configuration 1 interface 0 "Intel Rate Matching Hub" rev 2.00/0.00 addr 2
uhub3 at uhub2 port 1 configuration 1 interface 0 "Standard Microsystems product 0x2514" rev 2.00/0.00 addr 3
uhidev0 at uhub3 port 1 configuration 1 interface 0 "Microsoft Microsoft Basic Optical Mouse v2.0" rev 1.10/1.04 addr 4
uhidev0: iclass 3/1
ums0 at uhidev0: 3 buttons, Z dir
wsmouse2 at ums0 mux 0
uhidev1 at uhub3 port 3 configuration 1 interface 0 "CM Storm Quickfire TKL Nkeys" rev 1.10/1.11 addr 5
uhidev1: iclass 3/1
ukbd0 at uhidev1: 64 variable keys, 0 key codes, country code 33
wskbd1 at ukbd0 mux 1
wskbd1: connecting to wsdisplay0
uhidev2 at uhub3 port 3 configuration 1 interface 1 "CM Storm Quickfire TKL Nkeys" rev 1.10/1.11 addr 5
uhidev2: iclass 3/0, 3 report ids
uhid0 at uhidev2 reportid 1: input=2, output=0, feature=0
uhid1 at uhidev2 reportid 2: input=1, output=0, feature=0
ukbd1 at uhidev2 reportid 3: 56 variable keys, 0 key codes, country code 33
wskbd2 at ukbd1 mux 1
wskbd2: connecting to wsdisplay0
urtwn0 at uhub2 port 2 configuration 1 interface 0 "Realtek 802.11n NIC" rev 2.00/0.00 addr 6
urtwn0: MAC/BB RTL8188EU, RF 6052 1T1R, address 50:3e:aa:30:f4:83
ugen0 at uhub2 port 4 "Broadcom Corp Broadcom Bluetooth Device" rev 2.00/7.48 addr 7
uhub4 at uhub1 port 1 configuration 1 interface 0 "Intel Rate Matching Hub" rev 2.00/0.00 addr 2
ugen1 at uhub4 port 1 "sigrok fx2lafw" rev 2.00/0.01 addr 3
uftdi0 at uhub4 port 2 configuration 1 interface 0 "FTDI FT232R USB UART" rev 2.00/6.00 addr 4
ucom0 at uftdi0 portno 1
vscsi0 at root
scsibus2 at vscsi0: 256 targets
softraid0 at root
scsibus3 at softraid0: 256 targets
softraid0: sd1 was not shutdown properly
sd1 at scsibus3 targ 1 lun 0: <OPENBSD, SR CRYPTO, 006> SCSI2 0/direct fixed
sd1: 114470MB, 512 bytes/sector, 234435953 sectors
root on sd1a (69820133ee5efcb1.a) swap on sd1b dump on sd1b
WARNING: / was not properly unmounted
wsmouse2 detached
ums0 detached
uhidev0 detached
uhidev0 at uhub3 port 1 configuration 1 interface 0 "Microsoft Microsoft Basic Optical Mouse v2.0" rev 1.10/1.04 addr 4
uhidev0: iclass 3/1
ums0 at uhidev0: 3 buttons, Z dir
wsmouse2 at ums0 mux 0

usbdevs:
Controller /dev/usb0:
addr 01: 8086:0000 Intel, EHCI root hub
         high speed, self powered, config 1, rev 1.00
         driver: uhub0
addr 02: 8087:0024 Intel, Rate Matching Hub
         high speed, self powered, config 1, rev 0.00
         driver: uhub2
addr 03: 0424:2514 Standard Microsystems, product 0x2514
         high speed, self powered, config 1, rev 0.00
         driver: uhub3
addr 04: 045e:00cb Microsoft, Microsoft Basic Optical Mouse v2.0
         low speed, power 100 mA, config 1, rev 1.04
         driver: uhidev0
addr 05: 2516:0014 CM Storm, Quickfire TKL Nkeys
         full speed, power 100 mA, config 1, rev 1.11
         driver: uhidev1
         driver: uhidev2
addr 06: 0bda:8179 Realtek, 802.11n NIC
         high speed, power 500 mA, config 1, rev 0.00, iSerialNumber 00E04C0001
         driver: urtwn0
addr 07: 0a5c:217f Broadcom Corp, Broadcom Bluetooth Device
         full speed, self powered, config 1, rev 7.48, iSerialNumber 402CF453F8CF
         driver: ugen0
Controller /dev/usb1:
addr 01: 8086:0000 Intel, EHCI root hub
         high speed, self powered, config 1, rev 1.00
         driver: uhub1
addr 02: 8087:0024 Intel, Rate Matching Hub
         high speed, self powered, config 1, rev 0.00
         driver: uhub4
addr 03: 0925:3881 vendor 0x0925, product 0x3881
         high speed, power 100 mA, config 1, rev 0.01
         driver: ugen1
addr 04: 0403:6001 FTDI, FT232R USB UART
         full speed, power 90 mA, config 1, rev 6.00, iSerialNumber A600aijf
         driver: uftdi0