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Oracle Solaris Modular Debugger Guide Oracle Solaris 11 Express 11/10 |
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Oracle Solaris Modular Debugger Guide Oracle Solaris 11 Express 11/10 |
4. Using MDB Commands Interactively
Getting Started: Creating a Sample Crash Dump
Sleeping and Non-Sleeping Allocations
Freed Buffer Checking: 0xdeadbeef
Uninitialized Data: 0xbaddcafe
Associating Panic Messages With Failures
Finding Corrupt Buffers With ::kmem_verify
The Oracle Solaris kernel memory (kmem) allocator provides a powerful set of debugging features that can facilitate analysis of a kernel crash dump. This chapter discusses these debugging features, and the MDB dcmds and walkers designed specifically for the allocator. Bonwick (see Related Books and Papers) provides an overview of the principles of the allocator itself. Refer to the header file <sys/kmem_impl.h> for the definitions of allocator data structures. The kmem debugging features can be enabled on a production system to enhance problem analysis, or on development systems to aid in debugging kernel software and device drivers.
Note - MDB exposes kernel implementation details that are subject to change at any time. This guide reflects the Oracle Solaris kernel implementation as of the date of publication of this guide. Information provided in this guide about the kernel memory allocator might not be correct or applicable to past or future Oracle Solaris releases.
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