Non-paged memory leak in both XP and 7.

Non-paged memory leak in both XP and 7.

I recently installed Comodo Internet Security on 2 machines and I’ve encountered a memory leak.

One machine with XP Pro (32-bit) was regularly becoming unstable after less than 24 hours of uptime, with classic indications of a resource leak, ie memory not available and other sundry system problems.

After rebooting, a check of the Windows Event log showed that non-paged memory pool had been depleted prior to the reboot. This was happening regularly, so I started monitoring this pool and observed a leak which was rapidly depleting the 256MB that is the maximum available under XP, however much RAM is installed.

Microsoft’s software development diagnostic tools revealed that the culprit is a kernel process using the non-paged tag of Rptr. Further investigation suggests that this tag is used by inspect.sys, which is part of CIS.

I uninstalled CIS completely and the leak was gone. I reinstalled and the leak returned.

I checked my other computer running Windows 7 Pro (32-bit) and found that it has the same leak. Windows 7 allows a much bigger non-paged pool, so a leak from this kernel pool is more tolerable in Windows 7.

My two computers are running quite different systems, and there is little in common at the kernel level where this memory pool is used, other than Windows and CIS.

I’m using the latest CIS and updates, with the firewall in safe mode, sandbox disabled, AV in stateful mode and D+ in training mode.

Please take a look at the non-paged pool and the way that CIS is using it. A quick fix would be appreciated.

We would very much appreciate it if you would edit your first post to create an issue report in line with the bug forum guidelines and format here. You can copy and paste the format from this topic.

To understand the reasons why we ask you to follow these guidelines please see below.

WHY WE ASK YOU TO FOLLOW THESE GUIDELINES
Bugs/issues can be impossible or very time consuming to fix if developers don’t have enough information to reproduce them. Since CIS is free, development time is limited. So if you want your issue fixed, please use the format below to describe it.

To avoid clutter, issues not described in the format below your post will not be moved to the ‘moderator verified’ issues topic. This means that the developers may not look at it.

Best wishes and many thanks in anticipation

HeffeD

We really would very much appreciate it if you would edit your first post to create an issue report in line with the bug forum guidelines and format. You can copy and paste the format from this topic.

Thank you

Dennis

Unfortunately we do need this issue to be reported in the full right format, and with all the information we have asked for, if we are to forward it to verified issues.

For the moment I am going to move it to the Orphaned/Resolved child board. If you do edit your post to create a complete issue report in standard format, and PM an active mod, we will of course consider moving it to verified reports.

The devs only look at the Orphaned/Resolved board if they have time, so please do edit the post and PM an active mod if you want it fixed.

Dennis