# After Jumbo Hotfix upgrade, certain User Space processes become unresponsive when working in Firewall Kernel Space Mode

**Product**: Security Gateways  
**Version**: R81.20, R82  
**Last Modified**: 2025-10-19

## Symptoms

- After Jumbo Hotfix upgrade, certain User Space processes (for example, PDPD) become unresponsive when working in Firewall Kernel Space Mode (KSFW).

The affected versions are:

- R81.20 Jumbo Hotfix Takes 111, 113, and 115  
  - R82 Jumbo Hotfix Takes 36, 39, and 41

- The pdpd.elg file may contain: `'T_get_event: CP_FD_SETSIZE limit (32768) reached for socket/type: 36060/1'`  
- HCP shows: `The process 'pdpd' (PID 'pid of pdp') has 'high number' file descriptors`.

## Cause

Jumbo Hotfix introduces changes that can impact the behavior of the User Space processes. These changes may lead to excessive file descriptor usage and a memory leak, causing the User Space processes to stop responding.

## Solution

This problem was fixed. The fix is included in:

- [Jumbo Hotfix Accumulator for R82](https://sc1.checkpoint.com/documents/Jumbo_HFA/R82/Default.htm) starting from Take 43  
- [Jumbo Hotfix Accumulator for R81.20](https://sc1.checkpoint.com/documents/Jumbo_HFA/R81.20/Default.htm) starting from Take 118

If you choose not to upgrade, Check Point can supply a **Hotfix**. [Contact Check Point Support](https://www.checkpoint.com/support-services/.contact-support/) to get a Hotfix for this issue.

A Support Engineer will make sure the Hotfix is compatible with your environment before providing the Hotfix.

For faster resolution and verification, please collect [CPinfo files](http://supportcontent.checkpoint.com/solutions?id=sk92739) from the Security Management Server and Security Gateways involved in the case.

**Hotfix installation instructions:**  
Refer to [sk168597 - How to install a Hotfix](https://supportcenter.checkpoint.com/supportcenter/portal?eventSubmit_doGoviewsolutiondetails=&solutionid=sk168597).

#### NOTE

This solution has been verified for the specific scenario, described by the combination of Product, Version and Symptoms. It may not work in other scenarios.