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Npcap causes corruption in system's network stack #1391
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Have you tried the current release (0.99r7)? According to https://github.com/nmap/npcap/releases there have been a ton of bugs fixed since 0.94 was released. |
@geraldcombs we are planning to upgrade to latest release, however since the problem is really hard to reproduce I was wondering if we have really fixed the problem. I saw a couple of bug fixes that handle similar crash but I didn't see the same stack trace. It would be great if we could confirm or investigate this crash. |
@haitetra We are unaware of a crash with a similar backtrace, but as Gerald pointed out, there have been extensive changes since 0.94. It would be best to test with Npcap 0.99-r7 to see if the issue has been fixed by some other code change. If there is still a crash, or if you are completely unable to test on a later version, send the crash minidump to dmiller@nmap.com and I will investigate. |
Thanks @dmiller-nmap for helping. I have emailed you the full dump and will be waiting for your investigation result. In the mean time we will try the latest release, but again this crash was not easily reproducible so it's hard to confirm if the crash is fixed just by testing. I hope you could pinpoint exactly the cause of the crash based on the collected dump. |
We're currently debugging the crash dump. I don't have anything solid to report, but I do note 2 other drivers in the call stack: be2nd62.sys (HPE Emulex 10GB NDIS miniport adapter) and cpqteam.sys (HP NIC teaming driver). |
We have not located a cause for this crash. If it happens again with the latest Npcap, please open a new bug report. Thanks! |
Hello Npcap developers,
After installing an in-house utility and npcap 0.94, a system running Windows Server 2012 R2 was found to be un-responding, and non of the applications were able to use the networking functionalities.
We took a memory dump and found a potential issue caused by Npcap:
Could you please take a look and advice if this is a known issue. Note that we have been installing the same combination of utility + Npcap 0.94, but this is the 1st instance it happened, so it's not easily reproducible. Rebooting the system seems to have fixed the issue (at least we no longer observed it).
Thanks !
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