# IOCTL failures causing crashes and freezes in various processes

**Product**: ClusterXL, Security Gateways  
**Version**: R81.20, R82, R82.10  
**OS**: Gaia  
**Last Modified**: 2026-03-04

## Symptoms

- FWK or CPD crashes on Gateway, VSX or Maestro/VSX-Maestro.
- One of the blades enabled: AV/AB/URLF/ZPH, and RAD sends large number of IOCTLs
- We see the following messages in fwk.elg:.
  - `fwk_ioctl_mq_get_reverse_sock: failed to receive reverse socket for pid`
  - `fwk_ioctl_mq_read: failed`
- In SP, we see the following messages on SMO:
  - `lbd_send_bucket_list: members = 0xd00000000, active_members = 0x100200000000`
  - `where values of members and active members are greater than 0x10000000.`
  - `It indicates that the SMO was sending corrupted state to the MHOs.`

## 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 36
- [Jumbo Hotfix Accumulator for R81.20](https://sc1.checkpoint.com/documents/Jumbo_HFA/R81.20/Default.htm) starting from Take 111

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](http://supportcontent.checkpoint.com/solutions?id=sk92739) files from the Security Gateways involved in the case.

**Hotfix installation instructions:**

Refer to [sk168597 - How to install a Hotfix](https://support.checkpoint.com/results/sk/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.