Wireshark-dev: Re: [Wireshark-dev] Npcap 0.03 call for test
From: Yang Luo <[email protected]>
Date: Tue, 4 Aug 2015 09:55:29 +0800
Hi Pascal,

I followed your steps, but unfortunately didn't reproduce the BSoD. Here's my steps on my Win8.1 x64 VMware VM ( with Intel VT enabled, so it should behave the same as a physical machine):

1) Installed VirtualBox 5.0.0 r101573, just opened the UI once, didn't create any VMs.
2) Reinstalled Npcap 0.03 r3
3) Installed Wireshark-win64-1.99.9-58-g08e80b1.exe (without installing WinPcap 4.1.3) from https://www.wireshark.org/download/automated/ 
4) reboot
5) Launch Wireshark (also tried Wireshark Legacy), but there's no crashes.

This is so weird.


On Tue, Aug 4, 2015 at 12:48 AM, Pascal Quantin <[email protected]> wrote:

2015-08-03 17:57 GMT+02:00 Yang Luo <[email protected]>:
Hi Pascal,

Thanks for testing. The output of your dump is pasted below. It seems that NdisFOidRequest call fails in Npcap's NPF_GetDeviceMTU routine. It is in the same position with the previous SYSTEM_SERVICE_EXCEPTION BSoD. So I think they may belong to the same bug. However, I didn't find what's wrong with this code (go to this link if anyone is interested with the code: https://github.com/nmap/npcap/blob/master/packetWin7/npf/npf/Openclos.c, Line: 570). WinDbg said "An attempt was made to access a pageable (or completely invalid) address at an interrupt request level (IRQL) that is too high." But actually all arguments of NdisFOidRequest are from the OPEN_INSTANCE struct and this struct is allocated in a NonPaged pool, so it's hard to understand its reason.

Another way is to reproduce this BSoD. I didn't encounter this BSoD before, from the dump I only recognized that you installed VirtualBox. It will be very helpful if you can provide the reproduce steps.

Yes I have Virtualbox 5.0 installed (which allows me to run a Windows 10 RTM  machine on which Npcap does not crash (I could even capture some loopbak traffic and find - and fix - a bug in Wireshark: https://bugs.wireshark.org/bugzilla/show_bug.cgi?id=11412).
To reproduce the crash on this machine, it is as simple as:
- installing Npcap
- rebooting the laptop (I did not try without rebooting)
- Launching Wireshark 1.99.9 development build (you can find some nightly installers here: https://www.wireshark.org/download/automated/ )
- And bang it crashes immediately during Wireshark initialization (presumably when dumpcap tries to retrieve interfaces, but I could not confirm this as my PC reboots immediately)


Loading User Symbols
PEB is paged out (Peb.Ldr = 00000000`7efdf018).  Type ".hh dbgerr001" for details
Loading unloaded module list
*                                                                             *
*                        Bugcheck Analysis                                    *
*                                                                             *

Use !analyze -v to get detailed debugging information.

BugCheck D1, {7fefe838, 2, 0, fffff880010d86c2}

Probably caused by : npf.sys ( npf!NPF_GetDeviceMTU+ad )

Followup:     MachineOwner

6: kd> !analyze -v
*                                                                             *
*                        Bugcheck Analysis                                    *
*                                                                             *

An attempt was made to access a pageable (or completely invalid) address at an
interrupt request level (IRQL) that is too high.  This is usually
caused by drivers using improper addresses.
If kernel debugger is available get stack backtrace.
Arg1: 000000007fefe838, memory referenced
Arg2: 0000000000000002, IRQL
Arg3: 0000000000000000, value 0 = read operation, 1 = write operation
Arg4: fffff880010d86c2, address which referenced memory

Debugging Details:

SYSTEM_SKU:  LENOVO_MT_20AN_BU_Think_FM_ThinkPad T440p


BIOS_DATE:  10/21/2014



BUGCHECK_P1: 7fefe838



BUGCHECK_P4: fffff880010d86c2

READ_ADDRESS:  000000007fefe838 


fffff880`010d86c2 0fb638          movzx   edi,byte ptr [rax]


CPU_MHZ: 95a

CPU_VENDOR:  GenuineIntel






PROCESS_NAME:  dumpcap.exe

ANALYSIS_VERSION: 10.0.10240.9 amd64fre

TRAP_FRAME:  fffff8800e07f2c0 -- (.trap 0xfffff8800e07f2c0)
NOTE: The trap frame does not contain all registers.
Some register values may be zeroed or incorrect.
rax=000000007fefe838 rbx=0000000000000000 rcx=fffffa800a6f8d00
rdx=fffffa8016f500c0 rsi=0000000000000000 rdi=0000000000000000
rip=fffff880010d86c2 rsp=fffff8800e07f450 rbp=fffff88001138110
 r8=0000000000000000  r9=0000000000000000 r10=0000000000000000
r11=fffff8800e07f448 r12=0000000000000000 r13=0000000000000000
r14=0000000000000000 r15=0000000000000000
iopl=0         nv up ei ng nz na po nc
fffff880`010d86c2 0fb638          movzx   edi,byte ptr [rax] ds:00000000`7fefe838=??
Resetting default scope

LAST_CONTROL_TRANSFER:  from fffff80003080e69 to fffff800030818c0

fffff880`0e07f178 fffff800`03080e69 : 00000000`0000000a 00000000`7fefe838 00000000`00000002 00000000`00000000 : nt!KeBugCheckEx
fffff880`0e07f180 fffff800`0307fae0 : 00000000`00000002 00000000`00000000 00000000`00000000 00000000`c0000001 : nt!KiBugCheckDispatch+0x69
fffff880`0e07f2c0 fffff880`010d86c2 : fffffa80`0a6f8c80 fffff800`03215588 fffffa80`0a6f8c80 00000000`c0000001 : nt!KiPageFault+0x260
fffff880`0e07f450 fffff880`010d8cf9 : fffff880`0e07f500 fffff880`01138110 fffffa80`16f50000 fffff800`0309867f : ndis!ndisFQueueRequestOnNext+0xa2
fffff880`0e07f4c0 fffff880`01d8d1d1 : fffffa80`16f50098 fffffa80`16f50000 fffffa80`16f50098 00000000`00000000 : ndis!NdisFOidRequest+0xc9
fffff880`0e07f5a0 fffff880`01d8d51f : fffffa80`09c9b5b0 fffffa80`16cd5410 fffffa80`16cd5340 fffffa80`16f50000 : npf!NPF_GetDeviceMTU+0xad [j:\npcap\packetwin7\npf\npf\openclos.c @ 570]
fffff880`0e07f5e0 fffff800`0337fb4b : 00000000`00000025 00000000`00000040 fffffa80`16da8c90 fffffa80`16da8d28 : npf!NPF_OpenAdapter+0xef [j:\npcap\packetwin7\npf\npf\openclos.c @ 308]
fffff880`0e07f610 fffff800`0337bb5e : fffffa80`09c9b460 00000000`00000000 fffffa80`13c75750 00000000`00000001 : nt!IopParseDevice+0x14e2
fffff880`0e07f770 fffff800`0337c646 : 00000000`00000000 fffff880`0e07f8f0 fffff8a0`00000040 fffffa80`06d5d080 : nt!ObpLookupObjectName+0x784
fffff880`0e07f870 fffff800`0337df4c : fffffa80`16df4e60 00000000`00000000 fffff8a0`07bcc701 00000000`00000000 : nt!ObOpenObjectByName+0x306
fffff880`0e07f940 fffff800`03389574 : 00000000`001edbf8 00000000`c0100080 00000000`001ee4c0 00000000`001edc10 : nt!IopCreateFile+0x2bc
fffff880`0e07f9e0 fffff800`03080b53 : fffffa80`16e81b50 fffff880`0e07fb60 fffffa80`16e81b50 fffff800`03377894 : nt!NtCreateFile+0x78
fffff880`0e07fa70 00000000`7701e10a : 00000000`00000000 00000000`00000000 00000000`00000000 00000000`00000000 : nt!KiSystemServiceCopyEnd+0x13
00000000`001edb88 00000000`00000000 : 00000000`00000000 00000000`00000000 00000000`00000000 00000000`00000000 : 0x7701e10a

On Mon, Aug 3, 2015 at 6:35 PM, Pascal Quantin <[email protected]> wrote:

Hi Yang

2015-08-03 9:33 GMT+02:00 Yang Luo <[email protected]>:
> Hi list,
> I think have fixed the BAD_POOL_CALLER BSoD in Npcap 0.03 r3 version, it turns out to be a memory double-free bug in WFP classifyFn function used for loopback packet capturing. The lastest installer is: https://svn.nmap.org/nmap-exp/yang/NPcap-LWF/npcap-nmap-0.03-r3.exe
> I have tested it under Win 8.1 x64 with VMware Workstation 11 installed and Win10 x64, if you encounter any BSoDs with this version, please let me know.

I just gave it a try on the Windows 7 x64 laptop that was crashing last week:
- like Tyson my Wifi is no more working when installing Npcap. No issue when using shutting down Wifi and using Ethernet
- I still get a BSoD when launching Wireshark. The full and mini memory dumps are available here: https://www.dropbox.com/sh/2oz00ox20kv3oe0/AACFQC83vyKS2dY7bI7hnZBOa?dl=0


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