SALT – SLUB ALlocator Tracer for the Linux kernel (including GDB plugin)

Welcome to salt, a tool to reverse and learn kernel heap memory management. It can be useful to develop an exploit, to debug your own kernel code, and, more importantly, to play with the kernel heap allocations and learn its inner workings.

This tool helps tracing allocations and the current state of the SLUB allocator in modern linux kernels.

It is written as a gdb plugin, and it allows you to trace and record memory allocations and to filter them by process name or by cache. The tool can also dump the list of active caches and print relevant information.

This repository also includes a playground loadable kernel module that can trigger allocations and deallocations at will, to serve both as a debugging tool and as a learning tool to better understand how the allocator works.

https://github.com/PaoloMonti42/salt

https://github.com/PaoloMonti42/salt/blob/master/presentation.pdf

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