I just answered Grégoire, but maybe it might interest the list.
---------- Forwarded message ----------
From: Olivier Antoine
Date: Tue, Dec 12, 2017 at 8:36 PM
Subject: Re: Reboot (dounmount) crash with latest kernel on amd64
To: Grégoire Jadi
Hi,
I did two VMs. One with fully encrypted disk and the other without.
The VM with softraid crypto systematically hangs in ddb on reboot. The
one without encryption doesn't crash.
syncing disks... done
kernel: protection fault trap, code=0
Stopped at dounmount+0x35: movq 0x28(%r13),%rax
ddb> trace
dounmount(ffff8000ffffb410,ffffff001f19f250,400) at dounmount+0x35
vop_generic_revoke(1f) at vop_generic_revoke+0x5d
VOP_REVOKE(ab67f26a1630ea8e,ffff800000000001) at VOP_REVOKE+0x31
vdevgone(ffffffff81711550,10,4,1f) at vdevgone+0x8a
disk_gone(ffff80000001ef10,ffff80000001ee00) at disk_gone+0x53
sddetach(1,ffff80000001ee00) at sddetach+0x2a
config_detach(ffff800000081600,ffff80000009b000) at config_detach+0x14a
scsi_detach_lun(0,ffff800000096000,ffff800000093000,ffff800000096980) at scsi_d
etach_lun+0xa8
sr_discipline_shutdown(370,ffff800000093000) at sr_discipline_shutdown+0x10e
sr_shutdown() at sr_shutdown+0x2a
boot(ffffffff81a8d740) at boot+0x51
reboot(ffff80000e3dccf0) at reboot+0x49
sys_reboot(ffff8000ffffb410,ffffff001f7d2960,ffffffff815f5545) at sys_reboot+0x
25
syscall() at syscall+0x206
--- syscall (number 55) ---
end of kernel
end trace frame: 0x7f7ffffe7f40, count: -14
0x573a750151a:
ddb> ps
PID TID PPID UID S FLAGS WAIT COMMAND
*96234 522304 1 0 7 0x3 reboot
12747 383130 0 0 2 0x14200 zerothread
39318 475681 0 0 3 0x14200 aiodoned aiodoned
40196 451875 0 0 3 0x14200 syncer update
7254 108576 0 0 3 0x14200 cleaner cleaner
15239 90739 0 0 3 0x14200 reaper reaper
5353 269048 0 0 3 0x14200 pgdaemon pagedaemon
96962 12685 0 0 3 0x14200 bored sensors
24843 466294 0 0 3 0x14200 bored srdis
99137 348339 0 0 3 0x14200 bored crynlk
58193 78054 0 0 3 0x14200 bored crypto
61692 524230 0 0 3 0x14200 bored softnet
13415 80733 0 0 3 0x14200 bored systqmp
11167 16722 0 0 3 0x14200 bored systq
70413 458708 0 0 3 0x40014200 bored softclock
16129 120481 0 0 3 0x40014200 idle0
1 414329 0 0 3 0x82 wait init
0 0 -1 0 3 0x10200 scheduler swapper
ddb> show reg
rdi 0xffff8000002e9400
rsi 0x8080000 __kernel_end_phys+0x6480000
rbp 0xffff80000e3dca90
rbx 0xffff8000ffffb410
rdx 0xffff8000ffffb410
rcx 0
rax 0
r8 0xffffffff8195bf80 rw_ops+0x10
r9 0x21
r10 0
r11 0x1526f000
r12 0x8080000 __kernel_end_phys+0x6480000
r13 0xdeaf0014deafbead
r14 0xffff8000002e9400
r15 0xffff8000ffffb410
rip 0xffffffff811be9b5 dounmount+0x35
cs 0x8
rflags 0x10286 __ALIGN_SIZE+0xf286
rsp 0xffff80000e3dca60
ss 0x10
dounmount+0x35: movq 0x28(%r13),%rax
OpenBSD 6.2-current (GENERIC) #269: Mon Dec 11 00:12:56 MST 2017
[email protected]:/usr/src/sys/arch/amd64/compile/GENERIC
real mem = 520085504 (495MB)
avail mem = 497549312 (474MB)
mpath0 at root
scsibus0 at mpath0: 256 targets
mainbus0 at root
bios0 at mainbus0
acpi at bios0 not configured
cpu0 at mainbus0: (uniprocessor)
cpu0: Intel(R) Core(TM) i3-3227U CPU @ 1.90GHz, 1897.04 MHz
cpu0:
FPU,VME,DE,PSE,TSC,MSR,PAE,MCE,CX8,SEP,PGE,MCA,CMOV,PAT,PSE36,CFLUSH,MMX,FXSR,SSE,SSE2,SSE3,PCLMUL,SSSE3,CX16,SSE4.1,SSE4.2,POPCNT,XSAVE,AVX,F16C,HV,NXE,RDTSCP,LONG,LAHF,ITSC,FSGSBASE,SMEP,ERMS
cpu0: 256KB 64b/line 8-way L2 cache
cpu0: smt 0, core 0, package 0
pvbus0 at mainbus0: OpenBSD
pci0 at mainbus0 bus 0
pchb0 at pci0 dev 0 function 0 "OpenBSD VMM Host" rev 0x00
virtio0 at pci0 dev 1 function 0 "Qumranet Virtio RNG" rev 0x00
viornd0 at virtio0
virtio0: irq 3
virtio1 at pci0 dev 2 function 0 "Qumranet Virtio Storage" rev 0x00
vioblk0 at virtio1
scsibus1 at vioblk0: 2 targets
sd0 at scsibus1 targ 0 lun 0: <VirtIO, Block Device, > SCSI3 0/direct fixed
sd0: 4608MB, 512 bytes/sector, 9437184 sectors
virtio1: irq 5
virtio2 at pci0 dev 3 function 0 "Qumranet Virtio Network" rev 0x00
vio0 at virtio2: address fe:e1:bb:d1:6e:e0
virtio2: irq 6
virtio3 at pci0 dev 4 function 0 "OpenBSD VMM Control" rev 0x00
vmmci0 at virtio3
virtio3: irq 7
isa0 at mainbus0
isadma0 at isa0
com0 at isa0 port 0x3f8/8 irq 4: ns16450, no fifo
com0: console
vscsi0 at root
scsibus2 at vscsi0: 256 targets
softraid0 at root
scsibus3 at softraid0: 256 targets
sd1 at scsibus3 targ 1 lun 0: <OPENBSD, SR CRYPTO, 006> SCSI2 0/direct fixed
sd1: 4604MB, 512 bytes/sector, 9429563 sectors
root on sd1a (6a178d73d8065471.a) swap on sd1b dump on sd1b
Automatic boot in progress: starting file system checks.
/dev/sd1a (6a178d73d8065471.a): file system is clean; not checking
/dev/sd1e (6a178d73d8065471.e): file system is clean; not checking
/dev/sd1d (6a178d73d8065471.d): file system is clean; not checking
setting tty flags
pf enabled
starting network
reordering libraries: done.
openssl: generating isakmpd/iked RSA keys... done.
ssh-keygen: generating new host keys: RSA DSA ECDSA ED25519
starting early daemons: syslogd pflogd ntpd.
starting RPC daemons:.
savecore: no core dump
acpidump: Can't find ACPI information
checking quotas: done.
clearing /tmp
kern.securelevel: 0 -> 1
creating runtime link editor directory cache.
preserving editor files.
starting network daemons: sshd smtpd sndiod.
running rc.firsttime
Path to firmware: http://firmware.openbsd.org/firmware/snapshots/
No devices found which need firmware files to be downloaded.
starting local daemons: cron.
Tue Dec 12 20:18:06 CET 2017
On Tue, Dec 12, 2017 at 4:33 PM, Grégoire Jadi <[email protected]> wrote:
>>Synopsis: Reboot (dounmount) crash with latest kernel on amd64
>>Category: kernel amd64
>>Environment:
> System : OpenBSD 6.2
> Details : OpenBSD 6.2-current (GENERIC.MP) #1: Tue Dec 12
> 15:51:42 CET 2017
>
> daimrod@puffy:/home/daimrod/src/openbsd/src/sys/arch/amd64/compile/GENERIC.MP
>
> Architecture: OpenBSD.amd64
> Machine : amd64
>>Description:
> I compiled the latest version of the kernel from CVS to try stsp@ patch on
> ieee80211_node_checkrssi and rebooted several times.
> Everytime I rebooted my computer dounmount crashed.
>
> Sorry I was a bit tired of copying the addresses so I replaced them with
> "...". Since it happens everytime I can provide them if needed.
>
> Here is the trace/ps/show reg :
>
> syncing disks... done
> kernel: protection fault trap, code=0
> Stopped at dounmount+0x35: movq 0x28(%r13), %rax
>
> ddb{0}> trace
> dounmount(ffff800032c77890,ffffff0118c43190,400) at dounmount+0x35
> vop_generic_revoke(1f) at vop_generic_revoke+0x65
> VOP_REVOKE(2e2303f764c92ff3,1) at VOP_REVOKE+0x31
> vdevgone(...,10,4,1f) at vdevgone+0x8a
> disk_gone(...,...) at disk_gone+0x53
> sddetach(1,...) at sddetach+0x2a
> config_detach(...,...) at config_detach+0x14c
> scsi_detach_lun(0,...,...,...) at scsi_detach_lun+0xa8
> sr_discipline_shutdown(370,...) at sr_discipline_shutdown+0x10e
> sr_shutdown() at sr_shutdown+0x2a
> boot(2) at boot+0x59
> reboot(...) at reboot+0x4f
> sys_reboot(...,...,...) at sys_reboot+0x5c
> syscall() at syscall+0x279
> --- syscall (number 55) ---
> end of kernel
> end trace frame: 0x7f7ffffc5980, count: -15
> 0x10922110151a:
> ddb{0}> ps
> FLAGS WAIT COMMAND
> 0x3 reboot
> [skipped]
>
> ddb{0}> show reg
> rdi 0xffff80000034e000
> rsi 0x8080000 __kernel_end_phys+0x6480000
> rbp 0xffff800032c83810
> rbx 0xffff800032c77890
> rdx 0xffff800032c77890
> rcx 0
> rax 0
> r8 0xffffffff818addd0 rw_ops+0x10
> r9 0xffff80000034e040
> r10 0x21
> r11 0x2
> r12 0x8080000 __kernel_end_phys+0x6480000
> r13 0xffff0000dead4110
> r14 0xffff80000034e000
> r15 0xffff800032c77890
> rip 0xffffffff8113fe75 dounmount+0x35
> cs 0x8
> rflags 0x10286 __ALIGN_SIZE+0xf286
> rsp 0xffff800032c837e0
> ss 0x10
> dounmount+0x35: movq 0x28(%r13),%rax
> ddb{0}>
>
>
>>How-To-Repeat:
> # reboot
>
>>Fix:
> No idea
>
>
> dmesg:
> OpenBSD 6.2-current (GENERIC.MP) #1: Tue Dec 12 15:51:42 CET 2017
>
> daimrod@puffy:/home/daimrod/src/openbsd/src/sys/arch/amd64/compile/GENERIC.MP
> real mem = 4062691328 (3874MB)
> avail mem = 3932639232 (3750MB)
> mpath0 at root
> scsibus0 at mpath0: 256 targets
> mainbus0 at root
> bios0 at mainbus0: SMBIOS rev. 2.6 @ 0xe0010 (78 entries)
> bios0: vendor LENOVO version "6QET47WW (1.17 )" date 07/14/2010
> bios0: LENOVO 3680BA5
> acpi0 at bios0: rev 2
> acpi0: sleep states S0 S3 S4 S5
> acpi0: tables DSDT FACP SSDT ECDT APIC MCFG HPET ASF! SLIC BOOT SSDT TCPA
> DMAR SSDT SSDT SSDT
> acpi0: wakeup devices LID_(S3) SLPB(S3) IGBE(S4) EXP1(S4) EXP2(S4) EXP3(S4)
> EXP4(S4) EXP5(S4) EHC1(S3) EHC2(S3) HDEF(S4)
> acpitimer0 at acpi0: 3579545 Hz, 24 bits
> acpiec0 at acpi0
> acpimadt0 at acpi0 addr 0xfee00000: PC-AT compat
> cpu0 at mainbus0: apid 0 (boot processor)
> cpu0: Intel(R) Core(TM) i5 CPU M 520 @ 2.40GHz, 2660.49 MHz
> 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,POPCNT,AES,NXE,RDTSCP,LONG,LAHF,PERF,ITSC,SENSOR,ARAT
> cpu0: 256KB 64b/line 8-way L2 cache
> acpitimer0: recalibrated TSC frequency 2393996550 Hz
> cpu0: smt 0, core 0, package 0
> mtrr: Pentium Pro MTRR support, 8 var ranges, 88 fixed ranges
> cpu0: apic clock running at 132MHz
> cpu0: mwait min=64, max=64, C-substates=0.2.1.1, IBE
> cpu1 at mainbus0: apid 1 (application processor)
> cpu1: Intel(R) Core(TM) i5 CPU M 520 @ 2.40GHz, 2660.00 MHz
> 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,POPCNT,AES,NXE,RDTSCP,LONG,LAHF,PERF,ITSC,SENSOR,ARAT
> cpu1: 256KB 64b/line 8-way L2 cache
> cpu1: smt 1, core 0, package 0
> cpu2 at mainbus0: apid 4 (application processor)
> cpu2: Intel(R) Core(TM) i5 CPU M 520 @ 2.40GHz, 2660.00 MHz
> 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,POPCNT,AES,NXE,RDTSCP,LONG,LAHF,PERF,ITSC,SENSOR,ARAT
> cpu2: 256KB 64b/line 8-way L2 cache
> cpu2: smt 0, core 2, package 0
> cpu3 at mainbus0: apid 5 (application processor)
> cpu3: Intel(R) Core(TM) i5 CPU M 520 @ 2.40GHz, 2660.00 MHz
> 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,POPCNT,AES,NXE,RDTSCP,LONG,LAHF,PERF,ITSC,SENSOR,ARAT
> cpu3: 256KB 64b/line 8-way L2 cache
> cpu3: smt 1, core 2, package 0
> ioapic0 at mainbus0: apid 1 pa 0xfec00000, version 20, 24 pins
> , remapped to apid 1
> acpimcfg0 at acpi0 addr 0xe0000000, bus 0-255
> acpihpet0 at acpi0: 14318179 Hz
> acpihpet0: recalibrated TSC frequency 2393997000 Hz
> acpiprt0 at acpi0: bus 0 (PCI0)
> acpiprt1 at acpi0: bus -1 (PEG_)
> acpiprt2 at acpi0: bus 13 (EXP1)
> acpiprt3 at acpi0: bus -1 (EXP2)
> acpiprt4 at acpi0: bus -1 (EXP3)
> acpiprt5 at acpi0: bus 5 (EXP4)
> acpiprt6 at acpi0: bus 2 (EXP5)
> acpicpu0 at acpi0: C3(350@245 mwait.3@0x20), C2(500@205 mwait.3@0x10),
> C1(1000@3 mwait.1), PSS
> acpicpu1 at acpi0: C3(350@245 mwait.3@0x20), C2(500@205 mwait.3@0x10),
> C1(1000@3 mwait.1), PSS
> acpicpu2 at acpi0: C3(350@245 mwait.3@0x20), C2(500@205 mwait.3@0x10),
> C1(1000@3 mwait.1), PSS
> acpicpu3 at acpi0: C3(350@245 mwait.3@0x20), C2(500@205 mwait.3@0x10),
> C1(1000@3 mwait.1), PSS
> acpipwrres0 at acpi0: PUBS, resource for EHC1, EHC2
> acpitz0 at acpi0: critical temperature is 100 degC
> acpibtn0 at acpi0: LID_
> acpibtn1 at acpi0: SLPB
> "LEN0018" at acpi0 not configured
> "SMO1200" at acpi0 not configured
> acpibat0 at acpi0: BAT0 model "42T4837" serial 50934 type LION oem "LGC"
> acpiac0 at acpi0: AC unit online
> acpithinkpad0 at acpi0
> "PNP0C14" at acpi0 not configured
> acpidock0 at acpi0: GDCK not docked (0)
> acpivideo0 at acpi0: VID_
> acpivout0 at acpivideo0: LCD0
> acpivideo1 at acpi0: VID_
> cpu0: Enhanced SpeedStep 2660 MHz: speeds: 2400, 2399, 2266, 2133, 1999,
> 1866, 1733, 1599, 1466, 1333, 1199 MHz
> pci0 at mainbus0 bus 0
> pchb0 at pci0 dev 0 function 0 "Intel Core Host" rev 0x02
> inteldrm0 at pci0 dev 2 function 0 "Intel HD Graphics" rev 0x02
> drm0 at inteldrm0
> intagp0 at inteldrm0
> agp0 at intagp0: aperture at 0xd0000000, size 0x10000000
> inteldrm0: msi
> inteldrm0: 1280x800, 32bpp
> wsdisplay0 at inteldrm0 mux 1: console (std, vt100 emulation)
> wsdisplay0: screen 1-5 added (std, vt100 emulation)
> "Intel 3400 MEI" rev 0x06 at pci0 dev 22 function 0 not configured
> puc0 at pci0 dev 22 function 3 "Intel 3400 KT" rev 0x06: ports: 1 com
> com4 at puc0 port 0 apic 1 int 17: ns16550a, 16 byte fifo
> com4: probed fifo depth: 0 bytes
> em0 at pci0 dev 25 function 0 "Intel 82577LM" rev 0x06: msi, address
> f0:de:f1:11:3c:7e
> ehci0 at pci0 dev 26 function 0 "Intel 3400 USB" rev 0x06: apic 1 int 23
> 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 3400 HD Audio" rev 0x06: msi
> azalia0: codecs: Conexant/0x5069, Intel/0x2804, using Conexant/0x5069
> audio0 at azalia0
> ppb0 at pci0 dev 28 function 0 "Intel 3400 PCIE" rev 0x06: msi
> pci1 at ppb0 bus 13
> ppb1 at pci0 dev 28 function 3 "Intel 3400 PCIE" rev 0x06: msi
> pci2 at ppb1 bus 5
> ppb2 at pci0 dev 28 function 4 "Intel 3400 PCIE" rev 0x06: msi
> pci3 at ppb2 bus 2
> iwn0 at pci3 dev 0 function 0 "Intel Centrino Ultimate-N 6300" rev 0x35: msi,
> MIMO 3T3R, MoW, address 00:24:d7:46:03:bc
> ehci1 at pci0 dev 29 function 0 "Intel 3400 USB" rev 0x06: apic 1 int 19
> 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
> ppb3 at pci0 dev 30 function 0 "Intel 82801BAM Hub-to-PCI" rev 0xa6
> pci4 at ppb3 bus 14
> pcib0 at pci0 dev 31 function 0 "Intel QM57 LPC" rev 0x06
> ahci0 at pci0 dev 31 function 2 "Intel 3400 AHCI" rev 0x06: msi, AHCI 1.3
> ahci0: port 0: 3.0Gb/s
> scsibus1 at ahci0: 32 targets
> sd0 at scsibus1 targ 0 lun 0: <ATA, WDC WD1600BEKT-0, 02.0> SCSI3 0/direct
> fixed naa.50014ee2059f90bd
> sd0: 152627MB, 512 bytes/sector, 312581808 sectors
> ichiic0 at pci0 dev 31 function 3 "Intel 3400 SMBus" rev 0x06: apic 1 int 23
> iic0 at ichiic0
> spdmem0 at iic0 addr 0x50: 2GB DDR3 SDRAM PC3-10600 SO-DIMM
> spdmem1 at iic0 addr 0x51: 2GB DDR3 SDRAM PC3-10600 SO-DIMM
> itherm0 at pci0 dev 31 function 6 "Intel 3400 Thermal" rev 0x06
> 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 touchpad, firmware 7.4, 0x1e0b1 0xb40000
> pcppi0 at isa0 port 0x61
> spkr0 at pcppi0
> aps0 at isa0 port 0x1600/31
> pci5 at mainbus0 bus 255
> pchb1 at pci5 dev 0 function 0 "Intel QuickPath" rev 0x02
> pchb2 at pci5 dev 0 function 1 "Intel QuickPath" rev 0x02
> pchb3 at pci5 dev 2 function 0 "Intel QPI Link" rev 0x02
> pchb4 at pci5 dev 2 function 1 "Intel QPI Physical" rev 0x02
> pchb5 at pci5 dev 2 function 2 "Intel Reserved" rev 0x02
> pchb6 at pci5 dev 2 function 3 "Intel Reserved" rev 0x02
> 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
> ugen0 at uhub2 port 3 "UPEK Biometric Coprocessor" rev 1.01/0.02 addr 3
> uvideo0 at uhub2 port 6 configuration 1 interface 0 "Chicony Electronics Co.,
> Ltd. Integrated Camera" rev 2.00/23.45 addr 4
> video0 at uvideo0
> uhub3 at uhub1 port 1 configuration 1 interface 0 "Intel Rate Matching Hub"
> rev 2.00/0.00 addr 2
> vscsi0 at root
> scsibus2 at vscsi0: 256 targets
> softraid0 at root
> scsibus3 at softraid0: 256 targets
> sd1 at scsibus3 targ 1 lun 0: <OPENBSD, SR CRYPTO, 006> SCSI2 0/direct fixed
> sd1: 152624MB, 512 bytes/sector, 312575168 sectors
> root on sd1a (23e691dd1ff29ca6.a) swap on sd1b dump on sd1b
>
> usbdevs:
> Controller /dev/usb0:
> addr 1: high speed, self powered, config 1, EHCI root hub(0x0000),
> Intel(0x8086), rev 1.00
> port 1 addr 2: high speed, self powered, config 1, Rate Matching
> Hub(0x0020), Intel(0x8087), rev 0.00
> port 1 powered
> port 2 powered
> port 3 addr 3: full speed, power 100 mA, config 1, Biometric
> Coprocessor(0x2016), UPEK(0x147e), rev 0.02
> port 4 powered
> port 5 powered
> port 6 addr 4: high speed, power 200 mA, config 1, Integrated
> Camera(0x4816), Chicony Electronics Co., Ltd.(0x17ef), rev 23.45
> port 2 powered
> port 3 powered
> Controller /dev/usb1:
> addr 1: high speed, self powered, config 1, EHCI root hub(0x0000),
> Intel(0x8086), rev 1.00
> port 1 addr 2: high speed, self powered, config 1, Rate Matching
> Hub(0x0020), Intel(0x8087), rev 0.00
> port 1 powered
> port 2 powered
> port 3 powered
> port 4 powered
> port 5 powered
> port 6 powered
> port 7 powered
> port 8 powered
> port 2 powered
> port 3 powered
>
