ber_memfree - Linux

Overview

ber_memfree is a memory management utility used on the Berkeley Packet Filter (BPF). It provides a means to manage and free BPF memory explicitly, allowing users to optimize memory usage and prevent memory leaks.

Syntax

ber_memfree [-h] [-c] <address>

Options/Flags

• -h: Display help and usage information.
• -c: Compact memory by moving allocated memory to the beginning of the memory region.

Examples

Simple Memory Freeing

ber_memfree 0x1000

Compacting Memory

ber_memfree -c 0x1000

Common Issues

• Using invalid memory addresses can lead to errors or unexpected behavior.
• Incorrectly freeing memory can result in memory leaks.

Integration

ber_memfree is typically used in conjunction with other BPF-related commands, such as ber_load and ber_unload.

Related Commands

• ber_load: Loads a BPF program into memory.
• ber_unload: Unloads a BPF program from memory.
• bpf: The BPF compiler and interpreter.