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CRASHINFO(8) FreeBSD System Manager's Manual CRASHINFO(8) NAME crashinfo - analyze a core dump of the operating system SYNOPSIS crashinfo [-d crashdir] [-n dumpnr] [-k kernel] [core] DESCRIPTION The crashinfo utility analyzes a core dump saved by savecore(8). It generates a text file containing the analysis in the same directory as the core dump. For a given core dump file named vmcore.XX the generated text file will be named core.txt.XX. By default, crashinfo analyzes the most recent core dump in the core dump directory. A specific core dump may be specified via either the core or dumpnr arguments. Once crashinfo has located a core dump, it analyzes the core dump to determine the exact version of the kernel that generated the core. It then looks for a matching kernel file under each of the subdirectories in /boot. The location of the kernel file can also be explicitly provided via the kernel argument. Once crashinfo has located a core dump and kernel, it uses several utilities to analyze the core including dmesg(8), fstat(1), iostat(8), ipcs(1), kgdb(1) (ports/devel/gdb), netstat(1), nfsstat(1), ps(1), pstat(8), and vmstat(8). Note that kgdb must be installed from the devel/gdb port or gdb package. The options are as follows: -b Run in batch mode. Write most messages to the core.txt.XX file instead of the terminal. This flag is used when crashinfo is run during boot. -d crashdir Specify an alternate core dump directory. The default crash dump directory is /var/crash. -n dumpnr Use the core dump saved in vmcore.dumpnr instead of the latest core in the core dump directory. -k kernel Specify an explicit kernel file. SEE ALSO textdump(4), savecore(8) HISTORY The crashinfo utility appeared in FreeBSD 6.4. FreeBSD 14.1-RELEASE-p8 December 2, 2020 FreeBSD 14.1-RELEASE-p8