Salt - Slub Allocator Tracer For The Linux Kernel
Welcome to salt, a tool to reverse in addition to larn meat heap retentiveness management. It tin hold upwards useful to prepare an exploit, to debug your ain meat code, and, to a greater extent than importantly, to play amongst the meat heap allocations in addition to larn its inner workings.
This tool helps tracing allocations in addition to the electrical flow state of the SLUB allocator inwards modern linux kernels.
It is written every bit a gdb plugin, in addition to it allows y'all to trace in addition to record retentiveness allocations in addition to to filter them yesteryear procedure mention or yesteryear cache. The tool tin also dump the listing of active caches in addition to impress relevant information.
This repository also includes a playground loadable meat module that tin trigger allocations in addition to deallocations at will, to serve both every bit a debugging tool in addition to every bit a learning tool to amend empathise how the allocator works.
More information almost the inner workings of the SLUB allocator, how to get started, the detailed documentation of the plugin, in addition to notes on the playground module tin hold upwards flora inwards the docs folder.
Here is the sum listing of commands:
> tabular array salt assist Possible commands: filter -- handle filtering features yesteryear adding amongst 1 of the next arguments enable -- enable filtering. Only information almost filtered processes volition hold upwards displayed disable -- disable filtering. Information almost all processes volition hold upwards displayed. status -- display electrical flow filtering parameters add together process/cache -- add together 1 or to a greater extent than filtering atmospheric condition take away process/cache -- take away 1 or to a greater extent than filtering atmospheric condition gear upwards -- specify complex filtering rules. The supported syntax is "salt filter gear upwards (cache1 or cache2) in addition to (process1 or process2)". Some variations mightiness hold upwards accepted. Checking amongst "salt filter status" is recommended. For simpler rules role "salt filter add". tape -- handle recording features yesteryear adding amongst 1 of the next arguments on -- enable recording. Information almost filtered processes volition hold upwards added to the history off -- disable recording. demo -- display the recorded history clear -- delete the recorded history delineate -- reset all filters in addition to configure filtering for a specific procedure walk -- navigate all active caches in addition to impress relevant information walk_html -- navigate all active caches in addition to generate relevant information inwards html format walk_json -- navigate all active caches in addition to generate relevant information inwards json format assist -- display this message Many thank y'all to my supervisors Yanick, Fabio, Emanuele, Dario, Marius, in addition to to the balance of the S3 team that helped in addition to followed me.
Additional Resources
Perla E, Oldani one one thousand (2010) - Influenza A virus subtype H5N1 Guide to Kernel Exploitation: Attacking the Core
Christopher Lameter - Slab allocators inwards the linux kernel
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