Minsoo Choo :freebsd_logo: @minsoochoo@bsd.cafe
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My work on LLDB’s FreeBSDKernel plugin:
minsoo.io/future-of-the-freebs

The name FreeBSDKernel will be changed to FreeBSD-core, since it only provides functionalities to examine core dumps. Traditional live kernel debugging is done through gdb-remote plugin with FreeBSD’s gdb stub.

Future of the FreeBSD Kernel LLDB Plugin

FreeBSD offers several approaches to kernel debugging: DDB, live kernel debugging, and core dump analysis. DDB is an interactive debugger built directly into the FreeBSD kernel, with syntax inspired by GDB — making it immediately familiar to most developers. Live debugging leverages FreeBSD's GDB stub (defined under sys/gdb); on the

minsoo.io · Minsoo Choo

Link author: Minsoo Choo :freebsd_logo:@minsoochoo@bsd.cafe

Minsoo Choo :freebsd_logo: @minsoochoo@bsd.cafe
Public

FreeBSD has a patch that converts minidump to ELF core dump: reviews.freebsd.org/D19253

Instead of reimplenting kvm in C++ for LLDB, how about converting minidump to ELF core dump during savecore(8) and debugging the dump with FreeBSDKernel plugin which inherits classes from ProcessElfCore/ThreadElfCore?

This also opens door for cross-platform kernel dump debugging on GDB.

⚙ D19253 Add a tool to convert kernel minidump to elf coredump

reviews.freebsd.org

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