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This commits an initial version of the Memorizer tracing tool. It collects and outputs detailed data on the objects (traced from kmalloc/kmem_cache_alloc) and accesses, tracking the context of each event with respect to thread ID, program counter, and for allocations name of process. Signed-off-by: Nathan Dautenhahn <ndd@cis.upenn.edu>
34 lines
1.2 KiB
Markdown
34 lines
1.2 KiB
Markdown
# Memorizer
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Memorizer is a tool to trace fine-grained intra-kernel
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operations. The goal is to track interactions with memory
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objects for the purpose of analyzing fine-grained
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interactions amongst components and execution contexts.
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Memorizer tracks the following object operations: creation
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(alloc), destruction (free), modify (store), access (load),
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call, and return.
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Nathan D. ([@ndauten]) presented the umbrella project,
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Opportunistic Privilege Separation (OPS), and Memorizer at
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the [7/9/17 LinuxKit SIG](../../reports/2017-07-09.md) and
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[slides](http://nathandautenhahn.com/talks/2017-06-21_ops+memorizer-linuxkit-sig/linuxkit-sig-remark.html#1)
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## Usage
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See [manual usage docs](./docs/memorizer.txt). Be careful
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though because if the event queues are not drained then the
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system will run out of memory.
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For controlled use see [script + readme](./docs/memorizer/).
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This script is not automatically inserted into the runtime
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yet.
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## Issues
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- KASAN is reporting some errors within itself. This is
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noisy. Can reduce the console log output level to < 3,
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e.g., `echo 3 > /proc/sys/kernel/printk`
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- Source should be included soon, but for now there is an
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image on Docker Hub.
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