Hi,

I have a Thinkpad T430 with an internal 3G modem that shows up as a
(couple of) umodem. If I have a connection to the corresponding ucom
active (with cu or pppd) and suspend the machine followed by a resume,
it panics (or rather gets a trap) during resume; hand typed:

kernel: protection fault trap, code=0
Stopped at      ehci_check_intr+0xe:    movbzl  0x3(%rax),%eax
dddb{0} trace
ehci_check_intr at ehci_check_int+0xe
ehci_softintr() at ehci_softint+0x35
softintr_dispatch at softintr_dispatch+0x5d
Xsoftnet() at Xsoftnet+0x2d

rax holds 0xdead0065deadbeef

This is 100% reproducable. If I do not have an active connection to
cuaU0 at the moment of suspend all is fine and the machine resumes ok.

Could it be the refcounting is still rong in some cases?

What might matter: the detach messages for the various usb devices
show up after resume, and then the panic happens. If I did not have a
connection at the moment of suspend, I see the detach messages followed
by attach messages during resume. 

You might try to reproduce this using a USB serial dongle, although
the umodem might also play a role here?

I do not use the modem very often, so it's hard for me to tell when
this started to happen. But it is relatively recent (say a few weeks).

        -Otto

OpenBSD 5.3-current (GENERIC.MP) #21: Fri Jun 21 18:16:54 CEST 2013
    o...@tp.intra.drijf.net:/usr/src/sys/arch/amd64/compile/GENERIC.MP
real mem = 8256528384 (7874MB)
avail mem = 8029011968 (7657MB)
mainbus0 at root
bios0 at mainbus0: SMBIOS rev. 2.7 @ 0xdae9d000 (71 entries)
bios0: vendor LENOVO version "G1ET91WW (2.51 )" date 01/09/2013
bios0: LENOVO 2347CTO
acpi0 at bios0: rev 2
acpi0: sleep states S0 S3 S4 S5
acpi0: tables DSDT FACP TCPA SSDT SSDT SSDT HPET APIC MCFG ECDT FPDT ASF! UEFI 
UEFI MSDM SSDT SSDT UEFI DBG2
acpi0: wakeup devices LID_(S4) SLPB(S3) IGBE(S4) EXP3(S4) XHCI(S3) 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) i5-3320M CPU @ 2.60GHz, 1197.50 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,x2APIC,POPCNT,DEADLINE,AES,XSAVE,AVX,F16C,RDRAND,NXE,LONG,LAHF,PERF,ITSC,FSGSBASE,SMEP,ERMS
cpu0: 256KB 64b/line 8-way L2 cache
cpu0: smt 0, core 0, package 0
cpu0: apic clock running at 99MHz
cpu1 at mainbus0: apid 1 (application processor)
cpu1: Intel(R) Core(TM) i5-3320M CPU @ 2.60GHz, 1197.29 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,x2APIC,POPCNT,DEADLINE,AES,XSAVE,AVX,F16C,RDRAND,NXE,LONG,LAHF,PERF,ITSC,FSGSBASE,SMEP,ERMS
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) i5-3320M CPU @ 2.60GHz, 1197.29 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,x2APIC,POPCNT,DEADLINE,AES,XSAVE,AVX,F16C,RDRAND,NXE,LONG,LAHF,PERF,ITSC,FSGSBASE,SMEP,ERMS
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) i5-3320M CPU @ 2.60GHz, 1197.29 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,x2APIC,POPCNT,DEADLINE,AES,XSAVE,AVX,F16C,RDRAND,NXE,LONG,LAHF,PERF,ITSC,FSGSBASE,SMEP,ERMS
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 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 4 (EXP3)
acpicpu0 at acpi0: C3, C2, C1, PSS
acpicpu1 at acpi0: C3, C2, C1, PSS
acpicpu2 at acpi0: C3, C2, C1, PSS
acpicpu3 at acpi0: C3, C2, C1, PSS
acpipwrres0 at acpi0: PUBS
acpitz0 at acpi0: critical temperature is 200 degC
acpibtn0 at acpi0: LID_
acpibtn1 at acpi0: SLPB
acpibat0 at acpi0: BAT0 model "45N1001" serial  5140 type LION oem "SANYO"
acpibat1 at acpi0: BAT1 not present
acpiac0 at acpi0: AC unit offline
acpithinkpad0 at acpi0
cpu0: Enhanced SpeedStep 1197 MHz: speeds: 2601, 2600, 2500, 2400, 2300, 2200, 
2100, 2000, 1900, 1800, 1700, 1600, 1500, 1400, 1300, 1200 MHz
pci0 at mainbus0 bus 0
pchb0 at pci0 dev 0 function 0 "Intel Core 3G Host" rev 0x09
vga1 at pci0 dev 2 function 0 "Intel HD Graphics 4000" rev 0x09
intagp0 at vga1
agp0 at intagp0: aperture at 0xe0000000, size 0x10000000
inteldrm0 at vga1
drm0 at inteldrm0
inteldrm0: 1600x900
wsdisplay0 at vga1 mux 1: console (std, vt100 emulation)
wsdisplay0: screen 1-5 added (std, vt100 emulation)
"Intel 7 Series xHCI" rev 0x04 at pci0 dev 20 function 0 not configured
"Intel 7 Series MEI" rev 0x04 at pci0 dev 22 function 0 not configured
puc0 at pci0 dev 22 function 3 "Intel 7 Series KT" rev 0x04: ports: 1 com
com4 at puc0 port 0 apic 2 int 19: ns16550a, 16 byte fifo
com4: probed fifo depth: 0 bytes
em0 at pci0 dev 25 function 0 "Intel 82579LM" rev 0x04: msi, address 
00:21:cc:d9:6a:81
ehci0 at pci0 dev 26 function 0 "Intel 7 Series USB" rev 0x04: apic 2 int 16
usb0 at ehci0: USB revision 2.0
uhub0 at usb0 "Intel EHCI root hub" rev 2.00/1.00 addr 1
azalia0 at pci0 dev 27 function 0 "Intel 7 Series HD Audio" rev 0x04: msi
azalia0: codecs: Realtek ALC269, Intel/0x2806, using Realtek ALC269
audio0 at azalia0
ppb0 at pci0 dev 28 function 0 "Intel 7 Series PCIE" rev 0xc4: msi
pci1 at ppb0 bus 2
sdhc0 at pci1 dev 0 function 0 "Ricoh 5U823 SD/MMC" rev 0x04: apic 2 int 16
sdmmc0 at sdhc0
ppb1 at pci0 dev 28 function 1 "Intel 7 Series PCIE" rev 0xc4: msi
pci2 at ppb1 bus 3
iwn0 at pci2 dev 0 function 0 "Intel Centrino Advanced-N 6205" rev 0x34: msi, 
MIMO 2T2R, MoW, address 84:3a:4b:33:b7:76
ppb2 at pci0 dev 28 function 2 "Intel 7 Series PCIE" rev 0xc4: msi
pci3 at ppb2 bus 4
ehci1 at pci0 dev 29 function 0 "Intel 7 Series USB" rev 0x04: apic 2 int 23
usb1 at ehci1: USB revision 2.0
uhub1 at usb1 "Intel EHCI root hub" rev 2.00/1.00 addr 1
pcib0 at pci0 dev 31 function 0 "Intel QM77 LPC" rev 0x04
ahci0 at pci0 dev 31 function 2 "Intel 7 Series AHCI" rev 0x04: msi, AHCI 1.3
scsibus0 at ahci0: 32 targets
sd0 at scsibus0 targ 0 lun 0: <ATA, M4-CT256M4SSD1, 040H> SCSI3 0/direct fixed 
naa.500a075109250b5e
sd0: 244198MB, 512 bytes/sector, 500118192 sectors, thin
cd0 at scsibus0 targ 1 lun 0: <HL-DT-ST, DVDRAM GT50N, LT20> ATAPI 5/cdrom 
removable
ichiic0 at pci0 dev 31 function 3 "Intel 7 Series SMBus" rev 0x04: apic 2 int 18
iic0 at ichiic0
spdmem0 at iic0 addr 0x50: 4GB DDR3 SDRAM PC3-12800 SO-DIMM
spdmem1 at iic0 addr 0x51: 4GB DDR3 SDRAM PC3-12800 SO-DIMM
isa0 at pcib0
isadma0 at isa0
pckbc0 at isa0 port 0x60/5
pckbd0 at pckbc0 (kbd slot)
pckbc0: using irq 1 for kbd slot
wskbd0 at pckbd0: console keyboard, using wsdisplay0
pms0 at pckbc0 (aux slot)
pckbc0: using irq 12 for aux slot
wsmouse0 at pms0 mux 0
wsmouse1 at pms0 mux 0
pms0: Synaptics touchpad, firmware 7.2
pcppi0 at isa0 port 0x61
spkr0 at pcppi0
mtrr: Pentium Pro MTRR support
uhub2 at uhub0 port 1 "Intel Rate Matching Hub" rev 2.00/0.00 addr 2
ugen0 at uhub2 port 3 "Auth Biometric Coprocessor" rev 1.10/0.01 addr 3
uhub3 at uhub1 port 1 "Intel Rate Matching Hub" rev 2.00/0.00 addr 2
umodem0 at uhub3 port 4 configuration 1 interface 1 "Lenovo H5321 gw" rev 
2.00/0.00 addr 3
umodem0: data interface 2, has CM over data, has break
umodem0: status change notification available
ucom0 at umodem0
umodem1 at uhub3 port 4 configuration 1 interface 3 "Lenovo H5321 gw" rev 
2.00/0.00 addr 3
umodem1: data interface 4, has CM over data, has break
umodem1: status change notification available
ucom1 at umodem1
umodem2 at uhub3 port 4 configuration 1 interface 9 "Lenovo H5321 gw" rev 
2.00/0.00 addr 3
umodem2: data interface 10, has CM over data, has break
umodem2: status change notification available
ucom2 at umodem2
ugen1 at uhub3 port 4 configuration 1 "Lenovo H5321 gw" rev 2.00/0.00 addr 3
vscsi0 at root
scsibus1 at vscsi0: 256 targets
softraid0 at root
scsibus2 at softraid0: 256 targets
root on sd0a (53a017c2f41a0780.a) swap on sd0b dump on sd0b
WARNING: / was not properly unmounted


        

        

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