BSoD / freezes and aswSnx.SYS

Avast Free Antivirus / Premium Security
1

Hi,

I am using Avast! Pro 5.1 with Windows 7 and I get a systematic crash when launching a program which runs on 8 threads, each thread executing another .exe file.

The errors I can encounter are either:

  • SYSTEM_SERVICE_EXCEPTION
  • BAD_POOL_CALLER
  • complete freeze and I have to reboot

It seems that the problem only happens when using an Intel Core i7.

According to the minidumps and WinDbg.exe, the errors appear in aswSnx.SYS (for which I don’t have the symbols), and adding the directories that contain the concerned files to the “exclusion” category in Avast!'s Files Agent prevents the crashes from happening, so that I definitely think the problem comes from Avast!.

You will find several minidumps and my system information here: http://www.iaplejeu.fr/upload/autres/avast_crash_info.zip

Please tell me if you need more information.
Thanks in advance.

2

Please, zip and upload the C:\Windows\Memory.dmp file to this anonymous ftp server and name it uniquely: ftp.avast.com/incoming. Avast will analyze it and respond back to you in this thread or to your email. Thank you.

3

Hi,

Actually I got an answer from Petr Kurtin, and I will try to isolate the problem and send it to him.
BTW, sorry for not having done it yet, I have been pretty busy today ^^.

4

I uploaded a full memory dump to this anonymous FTP server but it seems not to be there anymore, I suppose the Avast! team copied it?

5

Users don’t have READ access to the ftp site, just WRITE (for security reasons).

6

Ok, sure, now I understand ^^

7

I have the same BSOD problem with aswSnx.SYS. XP SP3 running the latest 6.0.1044 Avast Free, usually hangs when browsing but has sometimes done it when sat on the desktop. AMD X2 processor.
Memory dump uploaded to the FTP site - stu_allen_memory_dump.zip

Thanks.

8

@ stu_allen,

You probably should have started a new thread so as to not confuse this one.

  1. Have you tried any problem solving prior to sending in the dump file?
  2. Did this problem just occur or has this been going on for a while?
  3. Did this happen in a prior version of Avast or just this version?
  4. Did you upgrade to this version or was this a clean install?
  5. What other security software do you currently have or did you have in the past on this machine including:
  • Antivirus (AV)
  • Firewall (FW)
  • Trial versions of AV, FW and other security programs
  • Other security software
  • If they were in the past, how did you remove them (the vendor’s uninstaller’s tool or another way)?
  1. Can you correlate this problem to anything else (a recent download of a new software, etc.)?

Sorry for all the questions, but the more information we have the better we can help you. Thank you.

9

@stu_allen, your dump is corrupted - if you get another BSOD, please compress & upload the dump again.
Thanks.

10

I got similar problem - BSOD caused by aswSP.SYS. :frowning:

I uploaded memory dump named MattheW-dump.zip.

Could you please let me know if it’s my machine problem or Avast bug?
Thank you!

PS. I use Avast 6.0.1000 at Vista x64.

11

As it was the same problem i thought it should go in the same thread rather than cluttering up the place.

  1. I turned off auto sandbox.
  2. Its happened 1-2 times per day since upgrading to V6 Avast.
  3. Just this version.
  4. Upgrade to v6, and then did another upgrade to the latest pre-release version in the failed hope that it would fix the issue. This seems to be happening with other people aswell!
  5. Previous AV was AVG, uninstalled using add/remove programs. Had MS antispyware, uninstalled using add/remove programs.
  6. Just the upgrade to Avast.

Dump from this morning uploaded : stu allen 3rd april MEMORY.zip

12

In the interim i seem to have circumvented the issue so am posting for the many other people with the same problem until Avast get around to fixing it.
I had auto sandbox turned off, so there shouldnt be any reason for aswsnx.sys to be accessed in any case, so i rebooted into safe mode, found the file in c:/windows/system32/drivers and renamed it. Reboot normally and my PC hasnt BSOD’ed since.
I guess this may need to be repeated for every program update that Avast do until this is fixed.

13

Hi,

i just installed Windows 8 on my PC last few days, and the first day i’m using it i already get this BSOD (aswSnx.SYS) 5 times!

i read in some forum where some moderator will ask to email or upload the minidumps to the ftp server (http://ftp.avast.com/incoming).

Please inform me where should i email it to because the ftp server cannot be opened.

Please help me, thanks.