coredump in usb stack

Ronald Klop ronald-freebsd8 at klop.yi.org
Wed May 6 10:05:14 UTC 2009 

Hi,

I had a coredump from within the usb stack at work a couple of days ago.

GENERIC kernel amd64
Apr 28 12:59:12 ronald kernel: FreeBSD 7.2-PRERELEASE #32: Mon Apr 27
17:35:55 CEST 2009

Attached is the kgdb output and dmesg. Is this known? Did I forget  
something.

Ronald.
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FreeBSD is a registered trademark of The FreeBSD Foundation.
FreeBSD 7.2-PRERELEASE #32: Mon Apr 27 17:35:55 CEST 2009
    root at ronald.office.base.nl:/usr/obj/usr/src/sys/GENERIC
Timecounter "i8254" frequency 1193182 Hz quality 0
CPU: Intel(R) Core(TM)2 Duo CPU     E6850  @ 3.00GHz (2992.50-MHz K8-class CPU)
  Origin = "GenuineIntel"  Id = 0x6fb  Stepping = 11
  Features=0xbfebfbff<FPU,VME,DE,PSE,TSC,MSR,PAE,MCE,CX8,APIC,SEP,MTRR,PGE,MCA,CMOV,PAT,PSE36,CLFLUSH,DTS,ACPI,MMX,FXSR,SSE,SSE2,SS,HTT,TM,PBE>
  Features2=0xe3fd<SSE3,RSVD2,MON,DS_CPL,VMX,SMX,EST,TM2,SSSE3,CX16,xTPR,PDCM>
  AMD Features=0x20100800<SYSCALL,NX,LM>
  AMD Features2=0x1<LAHF>
  Cores per package: 2
usable memory = 4145065984 (3953 MB)
avail memory  = 3976499200 (3792 MB)
ACPI APIC Table: <DELL   B9K    >
FreeBSD/SMP: Multiprocessor System Detected: 2 CPUs
 cpu0 (BSP): APIC ID:  0
 cpu1 (AP): APIC ID:  1
ioapic0: Changing APIC ID to 8
ioapic0 <Version 2.0> irqs 0-23 on motherboard
lapic0: Forcing LINT1 to edge trigger
kbd1 at kbdmux0
acpi0: <DELL B9K    > on motherboard
acpi0: [ITHREAD]
acpi0: Power Button (fixed)
Timecounter "ACPI-fast" frequency 3579545 Hz quality 1000
acpi_timer0: <24-bit timer at 3.579545MHz> port 0x808-0x80b on acpi0
acpi_hpet0: <High Precision Event Timer> iomem 0xfed00000-0xfed003ff on acpi0
Timecounter "HPET" frequency 14318180 Hz quality 900
acpi_button0: <Power Button> on acpi0
pcib0: <ACPI Host-PCI bridge> port 0xcf8-0xcff on acpi0
pci0: <ACPI PCI bus> on pcib0
pcib1: <ACPI PCI-PCI bridge> irq 16 at device 1.0 on pci0
pci1: <ACPI PCI bus> on pcib1
vgapci0: <VGA-compatible display> port 0xdc00-0xdcff mem 0xd0000000-0xdfffffff,0xfe9f0000-0xfe9fffff irq 16 at device 0.0 on pci1
pci0: <simple comms> at device 3.0 (no driver attached)
atapci0: <Intel ATA controller> port 0xfe80-0xfe87,0xfe90-0xfe93,0xfea0-0xfea7,0xfeb0-0xfeb3,0xfef0-0xfeff irq 18 at device 3.2 on pci0
atapci0: [ITHREAD]
ata2: <ATA channel 0> on atapci0
ata2: [ITHREAD]
ata3: <ATA channel 1> on atapci0
ata3: [ITHREAD]
pci0: <simple comms, UART> at device 3.3 (no driver attached)
em0: <Intel(R) PRO/1000 Network Connection 6.9.6> port 0xecc0-0xecdf mem 0xfebe0000-0xfebfffff,0xfebdb000-0xfebdbfff irq 21 at device 25.0 on pci0
em0: Using MSI interrupt
em0: [FILTER]
em0: Ethernet address: 00:1e:4f:ee:e8:5f
uhci0: <UHCI (generic) USB controller> port 0xff20-0xff3f irq 16 at device 26.0 on pci0
uhci0: [GIANT-LOCKED]
uhci0: [ITHREAD]
usb0: <UHCI (generic) USB controller> on uhci0
usb0: USB revision 1.0
uhub0: <Intel UHCI root hub, class 9/0, rev 1.00/1.00, addr 1> on usb0
uhub0: 2 ports with 2 removable, self powered
uhci1: <UHCI (generic) USB controller> port 0xff00-0xff1f irq 17 at device 26.1 on pci0
uhci1: [GIANT-LOCKED]
uhci1: [ITHREAD]
usb1: <UHCI (generic) USB controller> on uhci1
usb1: USB revision 1.0
uhub1: <Intel UHCI root hub, class 9/0, rev 1.00/1.00, addr 1> on usb1
uhub1: 2 ports with 2 removable, self powered
ehci0: <EHCI (generic) USB 2.0 controller> mem 0xfebd9c00-0xfebd9fff irq 22 at device 26.7 on pci0
ehci0: [GIANT-LOCKED]
ehci0: [ITHREAD]
usb2: EHCI version 1.0
usb2: wrong number of companions (3 != 2)
usb2: companion controllers, 2 ports each: usb0 usb1
usb2: <EHCI (generic) USB 2.0 controller> on ehci0
usb2: USB revision 2.0
uhub2: <Intel EHCI root hub, class 9/0, rev 2.00/1.00, addr 1> on usb2
uhub2: 6 ports with 6 removable, self powered
hdac0: <Intel 82801I High Definition Audio Controller> mem 0xfebdc000-0xfebdffff irq 16 at device 27.0 on pci0
hdac0: HDA Driver Revision: 20090329_0131
hdac0: [ITHREAD]
pcib2: <ACPI PCI-PCI bridge> irq 16 at device 28.0 on pci0
pci2: <ACPI PCI bus> on pcib2
uhci2: <UHCI (generic) USB controller> port 0xff80-0xff9f irq 23 at device 29.0 on pci0
uhci2: [GIANT-LOCKED]
uhci2: [ITHREAD]
usb3: <UHCI (generic) USB controller> on uhci2
usb3: USB revision 1.0
uhub3: <Intel UHCI root hub, class 9/0, rev 1.00/1.00, addr 1> on usb3
uhub3: 2 ports with 2 removable, self powered
uhci3: <UHCI (generic) USB controller> port 0xff60-0xff7f irq 17 at device 29.1 on pci0
uhci3: [GIANT-LOCKED]
uhci3: [ITHREAD]
usb4: <UHCI (generic) USB controller> on uhci3
usb4: USB revision 1.0
uhub4: <Intel UHCI root hub, class 9/0, rev 1.00/1.00, addr 1> on usb4
uhub4: 2 ports with 2 removable, self powered
uhci4: <UHCI (generic) USB controller> port 0xff40-0xff5f irq 18 at device 29.2 on pci0
uhci4: [GIANT-LOCKED]
uhci4: [ITHREAD]
usb5: <UHCI (generic) USB controller> on uhci4
usb5: USB revision 1.0
uhub5: <Intel UHCI root hub, class 9/0, rev 1.00/1.00, addr 1> on usb5
uhub5: 2 ports with 2 removable, self powered
ehci1: <EHCI (generic) USB 2.0 controller> mem 0xff980800-0xff980bff irq 23 at device 29.7 on pci0
ehci1: [GIANT-LOCKED]
ehci1: [ITHREAD]
usb6: EHCI version 1.0
usb6: companion controllers, 2 ports each: usb3 usb4 usb5
usb6: <EHCI (generic) USB 2.0 controller> on ehci1
usb6: USB revision 2.0
uhub6: <Intel EHCI root hub, class 9/0, rev 2.00/1.00, addr 1> on usb6
uhub6: 6 ports with 6 removable, self powered
uhub7: <vendor 0x0424 product 0x2504, class 9/0, rev 2.00/0.01, addr 2> on uhub6
uhub7: multiple transaction translators
uhub7: 4 ports with 4 removable, self powered
pcib3: <ACPI PCI-PCI bridge> at device 30.0 on pci0
pci3: <ACPI PCI bus> on pcib3
isab0: <PCI-ISA bridge> at device 31.0 on pci0
isa0: <ISA bus> on isab0
atapci1: <Intel AHCI controller> port 0xfe00-0xfe07,0xfe10-0xfe13,0xfe20-0xfe27,0xfe30-0xfe33,0xfec0-0xfedf mem 0xff970000-0xff9707ff irq 18 at device 31.2 on pci0
atapci1: [ITHREAD]
atapci1: AHCI Version 01.20 controller with 6 ports detected
ata4: <ATA channel 0> on atapci1
ata4: [ITHREAD]
ata5: <ATA channel 1> on atapci1
ata5: [ITHREAD]
ata6: <ATA channel 2> on atapci1
ata6: [ITHREAD]
ata7: <ATA channel 3> on atapci1
ata7: port not implemented
ata7: [ITHREAD]
ata8: <ATA channel 4> on atapci1
ata8: port not implemented
ata8: [ITHREAD]
ata9: <ATA channel 5> on atapci1
ata9: [ITHREAD]
ichsmb0: <SMBus controller> port 0xece0-0xecff mem 0xfebd9b00-0xfebd9bff irq 18 at device 31.3 on pci0
ichsmb0: [GIANT-LOCKED]
ichsmb0: [ITHREAD]
smbus0: <System Management Bus> on ichsmb0
ppc0: <Parallel port> port 0x378-0x37f,0x778-0x77f irq 7 on acpi0
ppc0: SMC-like chipset (ECP/EPP/PS2/NIBBLE) in COMPATIBLE mode
ppc0: FIFO with 16/16/8 bytes threshold
ppbus0: <Parallel port bus> on ppc0
ppbus0: [ITHREAD]
plip0: <PLIP network interface> on ppbus0
plip0: WARNING: using obsoleted IFF_NEEDSGIANT flag
lpt0: <Printer> on ppbus0
lpt0: Interrupt-driven port
ppi0: <Parallel I/O> on ppbus0
ppc0: [GIANT-LOCKED]
ppc0: [ITHREAD]
sio0: configured irq 4 not in bitmap of probed irqs 0
sio0: port may not be enabled
sio0: configured irq 4 not in bitmap of probed irqs 0
sio0: port may not be enabled
sio0: <16550A-compatible COM port> port 0x3f8-0x3ff irq 4 flags 0x10 on acpi0
sio0: type 16550A
sio0: [FILTER]
cpu0: <ACPI CPU> on acpi0
coretemp0: <CPU On-Die Thermal Sensors> on cpu0
est0: <Enhanced SpeedStep Frequency Control> on cpu0
p4tcc0: <CPU Frequency Thermal Control> on cpu0
cpu1: <ACPI CPU> on acpi0
coretemp1: <CPU On-Die Thermal Sensors> on cpu1
est1: <Enhanced SpeedStep Frequency Control> on cpu1
p4tcc1: <CPU Frequency Thermal Control> on cpu1
orm0: <ISA Option ROMs> at iomem 0xc0000-0xcefff,0xcf000-0xd0fff,0xd1000-0xd37ff,0xd3800-0xd3fff on isa0
atkbdc0: <Keyboard controller (i8042)> at port 0x60,0x64 on isa0
atkbd0: <AT Keyboard> irq 1 on atkbdc0
kbd0 at atkbd0
atkbd0: [GIANT-LOCKED]
atkbd0: [ITHREAD]
sc0: <System console> at flags 0x100 on isa0
sc0: VGA <16 virtual consoles, flags=0x300>
sio1: configured irq 3 not in bitmap of probed irqs 0
sio1: port may not be enabled
vga0: <Generic ISA VGA> at port 0x3c0-0x3df iomem 0xa0000-0xbffff on isa0
ums0: <Logitech USB-PS/2 Optical Mouse, class 0/0, rev 2.00/27.20, addr 2> on uhub0
ums0: 8 buttons and Z dir.
ukbd0: <Tripplite B015-000 R0.74 USB to PS2 adapter., class 0/0, rev 1.10/1.00, addr 3> on uhub0
kbd2 at ukbd0
ums1: <Tripplite B015-000 R0.74 USB to PS2 adapter., class 0/0, rev 1.10/1.00, addr 3> on uhub0
ums1: 5 buttons and Z dir.
ubt0: <Broadcom Bluetooth USB Dongle, class 224/1, rev 1.10/0.01, addr 2> on uhub1
ubt0: Interface 0 endpoints: interrupt=0x81, bulk-in=0x82, bulk-out=0x2
ubt0: Interface 1 (alt.config 4) endpoints: isoc-in=0x83, isoc-out=0x3; wMaxPacketSize=64; nframes=5, buffer size=320
Timecounters tick every 1.000 msec
ad8: 238418MB <Seagate ST3250310AS 3.ADA> at ata4-master SATA300
acd0: DVDROM <HL-DT-STDVD-ROM GDRH20N/0D08> at ata5-master SATA150
hdac0: HDA Codec #0: Analog Devices AD1984
pcm0: <HDA Analog Devices AD1984 PCM #0 Analog> at cad 0 nid 1 on hdac0
pcm1: <HDA Analog Devices AD1984 PCM #1 Analog> at cad 0 nid 1 on hdac0
lapic1: Forcing LINT1 to edge trigger
SMP: AP CPU #1 Launched!
GEOM_LABEL: Label for provider ad8s1a is ufsid/48aed81cc4f3cefd.
GEOM_LABEL: Label for provider ad8s1d is ufsid/48aed8252c64bcc1.
GEOM_LABEL: Label for provider ad8s1e is ufsid/48aed81ca20f6419.
GEOM_JOURNAL: Journal 4268017618: ad8s1f contains data.
GEOM_JOURNAL: Journal 4268017618: ad8s1g contains journal.
GEOM_JOURNAL: Journal ad8s1f consistent.
GEOM_JOURNAL: Journal 3980389559: ad8s1h contains data.
GEOM_JOURNAL: Journal 3980389559: ad8s1h contains journal.
GEOM_JOURNAL: Journal ad8s1h consistent.
GEOM_LABEL: Label for provider ad8s1f.journal is ufsid/4947eceea4f32377.
GEOM_LABEL: Label for provider ad8s1h.journal is ufsid/48e3ab88aa9b5e37.
Trying to mount root from ufs:/dev/ad8s1a
WARNING: / was not properly dismounted
GEOM_LABEL: Label ufsid/48aed81cc4f3cefd removed.
GEOM_LABEL: Label for provider ad8s1a is ufsid/48aed81cc4f3cefd.
GEOM_LABEL: Label ufsid/48aed81ca20f6419 removed.
GEOM_LABEL: Label for provider ad8s1e is ufsid/48aed81ca20f6419.
GEOM_LABEL: Label ufsid/48e3ab88aa9b5e37 removed.
GEOM_LABEL: Label for provider ad8s1h.journal is ufsid/48e3ab88aa9b5e37.
GEOM_LABEL: Label ufsid/4947eceea4f32377 removed.
GEOM_LABEL: Label for provider ad8s1f.journal is ufsid/4947eceea4f32377.
GEOM_LABEL: Label ufsid/48aed8252c64bcc1 removed.
GEOM_LABEL: Label for provider ad8s1d is ufsid/48aed8252c64bcc1.
GEOM_LABEL: Label ufsid/48aed81cc4f3cefd removed.
GEOM_LABEL: Label ufsid/48aed81ca20f6419 removed.
WARNING: TMPFS is considered to be a highly experimental feature in FreeBSD.
GEOM_LABEL: Label ufsid/48e3ab88aa9b5e37 removed.
GEOM_LABEL: Label ufsid/4947eceea4f32377 removed.
GEOM_LABEL: Label ufsid/48aed8252c64bcc1 removed.
WARNING: attempt to net_add_domain(bluetooth) after domainfinalize()
WARNING: attempt to net_add_domain(netgraph) after domainfinalize()
netsmb_dev: loaded
drm0: <Radeon HD 2400 XT> on vgapci0
vgapci0: child drm0 requested pci_enable_busmaster
info: [drm] Initialized radeon 1.29.0 20080528
info: [drm] Setting GART location based on new memory map
info: [drm] Loading RV610 CP Microcode
info: [drm] Loading RV610 PFP Microcode
info: [drm] Resetting GPU
info: [drm] writeback test succeeded in 1 usecs
drm0: [ITHREAD]
-------------- next part --------------
# root at ronald [/usr/obj/usr/src/sys/GENERIC]
kgdb kernel.debug /var/crash/vmcore.2 
GNU gdb 6.1.1 [FreeBSD]
Copyright 2004 Free Software Foundation, Inc.
GDB is free software, covered by the GNU General Public License, and you are
welcome to change it and/or distribute copies of it under certain conditions.
Type "show copying" to see the conditions.
There is absolutely no warranty for GDB.  Type "show warranty" for details.
This GDB was configured as "amd64-marcel-freebsd"...

Unread portion of the kernel message buffer:


Fatal trap 9: general protection fault while in kernel mode
cpuid = 1; apic id = 01
instruction pointer     = 0x8:0xffffffff80434d75
stack pointer           = 0x10:0xfffffffe8002db50
frame pointer           = 0x10:0x4
code segment            = base 0x0, limit 0xfffff, type 0x1b
                        = DPL 0, pres 1, long 1, def32 0, gran 1
processor eflags        = interrupt enabled, resume, IOPL = 0
current process         = 13 (swi4: clock sio)
trap number             = 9
panic: general protection fault
cpuid = 1
Uptime: 5d21h0m13s
Physical memory: 3953 MB
Dumping 643 MB: 628 612 596 580 564 548 532 516 500 484 468 452 436 420 404 388 372 356 340 324 308 292 276 260 244 228 212 196 180 164 148 132 116 100 84 68 52 36 20 4

#0  doadump () at pcpu.h:195
195             __asm __volatile("movq %%gs:0,%0" : "=r" (td));
(kgdb) list *0xffffffff80434d75
0xffffffff80434d75 is in ehci_timeout (/usr/src/sys/dev/usb/ehci.c:2729).
2724    #ifdef USB_DEBUG
2725            if (ehcidebug > 1)
2726                    usbd_dump_pipe(exfer->xfer.pipe);
2727    #endif
2728    
2729            if (sc->sc_dying) {
2730                    ehci_abort_xfer(&exfer->xfer, USBD_TIMEOUT);
2731                    return;
2732            }
2733    
(kgdb) bt
#0  doadump () at pcpu.h:195
#1  0x0000000000000004 in ?? ()
#2  0xffffffff804e38a1 in boot (howto=260) at /usr/src/sys/kern/kern_shutdown.c:418
#3  0xffffffff804e3cdc in panic (fmt=0x104 <Address 0x104 out of bounds>) at /usr/src/sys/kern/kern_shutdown.c:574
#4  0xffffffff8078ae6a in trap_fatal (frame=0xffffff0001419000, eva=Variable "eva" is not available.
) at /usr/src/sys/amd64/amd64/trap.c:757
#5  0xffffffff8078b922 in trap (frame=0xfffffffe8002daa0) at /usr/src/sys/amd64/amd64/trap.c:558
#6  0xffffffff80770fee in calltrap () at /usr/src/sys/amd64/amd64/exception.S:209
#7  0xffffffff80434d75 in ehci_timeout (addr=0xffffff00046f7800) at /usr/src/sys/dev/usb/ehci.c:2729
#8  0xffffffff804f50ee in softclock (dummy=Variable "dummy" is not available.
) at /usr/src/sys/kern/kern_timeout.c:274
#9  0xffffffff804c5880 in ithread_loop (arg=0xffffff0001415920) at /usr/src/sys/kern/kern_intr.c:1088
#10 0xffffffff804c284d in fork_exit (callout=0xffffffff804c5716 <ithread_loop>, arg=0xffffff0001415920, frame=0xfffffffe8002dc80) at /usr/src/sys/kern/kern_fork.c:810
#11 0xffffffff807713ae in fork_trampoline () at /usr/src/sys/amd64/amd64/exception.S:455
#12 0x0000000000000000 in ?? ()
#13 0x0000000000000000 in ?? ()
#14 0x0000000000000001 in ?? ()
#15 0x0000000000000000 in ?? ()
#16 0x0000000000000000 in ?? ()
#17 0x0000000000000000 in ?? ()
#18 0x0000000000000000 in ?? ()
#19 0x0000000000000000 in ?? ()
#20 0x0000000000000000 in ?? ()
#21 0x0000000000000000 in ?? ()
#22 0x0000000000000000 in ?? ()
#23 0x0000000000000000 in ?? ()
#24 0x0000000000000000 in ?? ()
#25 0x0000000000000000 in ?? ()
#26 0x0000000000000000 in ?? ()
#27 0x0000000000000000 in ?? ()
#28 0x0000000000000000 in ?? ()
#29 0x0000000000000000 in ?? ()
#30 0x0000000000000000 in ?? ()
#31 0x0000000000000000 in ?? ()
#32 0x0000000000000000 in ?? ()
#33 0x0000000000000000 in ?? ()
#34 0x0000000000000000 in ?? ()
#35 0x0000000000000000 in ?? ()
#36 0x0000000000d85000 in ?? ()
#37 0xffffffff80ae7540 in tdg_maxid ()
#38 0xffffffff80af3d40 in tdq_cpu ()
#39 0xffffffff80af3d40 in tdq_cpu ()
#40 0xffffff0001419000 in ?? ()
#41 0xffffff0001419330 in ?? ()
#42 0xfffffffe8002d3b8 in ?? ()
#43 0x0000000000000000 in ?? ()
#44 0xffffffff805054d3 in sched_switch (td=0xffffffff804c5716, newtd=0x8006968d0, flags=Variable "flags" is not available.
) at /usr/src/sys/kern/sched_ule.c:1938
#45 0x0000000000000000 in ?? ()
#46 0x0000000000000000 in ?? ()
#47 0x0000000000000000 in ?? ()
#48 0x0000000000000000 in ?? ()
#49 0x0000000000000000 in ?? ()
#50 0x0000000000000000 in ?? ()
#51 0x0000000000000000 in ?? ()
#52 0x0000000000000000 in ?? ()
#53 0x0000000000000000 in ?? ()
#54 0x0000000000000000 in ?? ()
#55 0x0000000000000000 in ?? ()
#56 0x0000000000000000 in ?? ()
#57 0x0000000000000000 in ?? ()
#58 0x0000000000000000 in ?? ()
#59 0x0000000000000000 in ?? ()
#60 0x0000000000000000 in ?? ()
---Type <return> to continue, or q <return> to quit---
#61 0x0000000000000000 in ?? ()
#62 0x0000000000000000 in ?? ()
#63 0x0000000000000000 in ?? ()
#64 0x0000000000000000 in ?? ()
#65 0x0000000000000000 in ?? ()
#66 0x0000000000000000 in ?? ()
#67 0x0000000000000000 in ?? ()
#68 0x0000000000000000 in ?? ()
#69 0x0000000000000000 in ?? ()
#70 0x0000000000000000 in ?? ()
#71 0x0000000000000000 in ?? ()
#72 0x0000000000000000 in ?? ()
#73 0x0000000000000000 in ?? ()
#74 0x0000000000000000 in ?? ()
#75 0x0000000000000000 in ?? ()
#76 0x0000000000000000 in ?? ()
#77 0x0000000000000000 in ?? ()
#78 0x0000000000000000 in ?? ()
#79 0x0000000000000000 in ?? ()
#80 0x0000000000000000 in ?? ()
#81 0x0000000000000000 in ?? ()
#82 0x0000000000000000 in ?? ()
#83 0x0000000000000000 in ?? ()
#84 0x0000000000000000 in ?? ()
#85 0x0000000000000000 in ?? ()
#86 0x0000000000000000 in ?? ()
#87 0x0000000000000000 in ?? ()
#88 0x0000000000000000 in ?? ()
#89 0x0000000000000000 in ?? ()
#90 0x0000000000000000 in ?? ()
#91 0x0000000000000000 in ?? ()
#92 0x0000000000000000 in ?? ()
#93 0x0000000000000000 in ?? ()
#94 0x0000000000000000 in ?? ()
#95 0x0000000000000000 in ?? ()
#96 0x0000000000000000 in ?? ()
#97 0x0000000000000000 in ?? ()
#98 0x0000000000000000 in ?? ()
#99 0x0000000000000000 in ?? ()
#100 0x0000000000000000 in ?? ()
#101 0x0000000000000000 in ?? ()
#102 0x0000000000000000 in ?? ()
#103 0x0000000000000000 in ?? ()
#104 0x0000000000000000 in ?? ()
#105 0x0000000000000000 in ?? ()
#106 0x0000000000000000 in ?? ()
#107 0x0000000000000000 in ?? ()
#108 0x0000000000000000 in ?? ()
#109 0x0000000000000000 in ?? ()
#110 0x0000000000000000 in ?? ()
#111 0x0000000000000000 in ?? ()
#112 0x0000000000000000 in ?? ()
Cannot access memory at address 0xfffffffe8002e000

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