# On Quantum Maestro/Chassis or in ClusterXL, the Security Gateway may crash while processing a VPN/correction flow

**Product**: ClusterXL, Maestro HyperScale Firewall, Scalable Chassis  
**Version**: R81 (EOS), R81.10 (EOS), R81.20  
**Last Modified**: 2024-08-27

## Symptoms

- On Quantum Maestro/Chassis or in ClusterXL, the Security Gateway may crash with a vmcore in _/var/log/crash_ or fwk core in _/var/log/dump/usermode/_.
- The " _kernel: xxxxx: tx_timeout_" error is printed in _/var/log/messages_.
- PSL drops packets with " _PSL Drop: psl_build_pslip failed_” message, potentially impacting network performance and streaming capabilities.  
- Affected versions:
  - R81.20 Jumbo Hotfix Accumulator starting from Take 14
  - R81.10 Jumbo Hotfix Accumulator starting from Take 110
  - R81 Jumbo Hotfix Accumulator starting from Take 87

## Cause

Memory corruption occurs during packet correction. It may lead to a Security Gateway crash/freeze or drop of a valid packet.

## Solution

This problem was fixed. The fix is included in:
- [Jumbo Hotfix Accumulator for R81.20](https://sc1.checkpoint.com/documents/Jumbo_HFA/R81.20/Default.htm) starting from Take 70
- [Jumbo Hotfix Accumulator for R81.10](https://sc1.checkpoint.com/documents/Jumbo_HFA/R81.10/Default.htm) starting from Take 152

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.