CRASH(8) - System Manager’s Manual # CRASH(8) - System Manager’s Manual
NAME # crash - system failure and diagnosis
DESCRIPTION # This section explains what happens when the system crashes and (very briefly) how to analyze crash dumps.
When the system crashes voluntarily it prints a message of the form
panic: why i gave up the ghost on the console and enters the kernel debugger, ddb(4).
If you wish to report this panic, you should include the output of the ps and trace commands.
...
Extent,
Uvm_init,
Sysctl,
Sysctl.conf,
Pool,
Gdb,
Witness,
Crash,
Ctfstrip,
Hangman,
Nm,
Ddb DDB(4) - Device Drivers Manual # DDB(4) - Device Drivers Manual
NAME # ddb - kernel debugger
DESCRIPTION # The ddb debugger provides a means for debugging the kernel, and analysing the kernel after a system crash (“panic”), with a gdb(1)-like syntax.
ddb is invoked upon a kernel panic when the sysctl(8) ddb.panic is set to 1. It may be invoked from the console when the sysctl ddb.console is set to 1, using any of the following methods:
...
Getty,
Sh,
Login.conf,
Login,
Rc.shutdown,
Rc,
Reboot,
Fbtab,
Kill,
Shutdown,
Securelevel,
Ttys,
Halt,
Crash,
Init INIT(8) - System Manager’s Manual # INIT(8) - System Manager’s Manual
NAME # init - process control initialization
SYNOPSIS # init [-fs]
DESCRIPTION # The init program is the last stage of the boot process. It normally executes the sequence of events described in rc(8) and begins multi-user operation.
The kernel may pass the following options to init, usually when requested by the boot(8) program:
-f
Activate fastboot mode. This is not currently supported by the OpenBSD kernel.
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SAVECORE(8) - System Manager’s Manual # SAVECORE(8) - System Manager’s Manual
NAME # savecore - save a core dump of the operating system
SYNOPSIS # savecore [-cfvz] [-NÂ system] directory
DESCRIPTION # savecore copies the currently running kernel and its associated core dump into directory, and enters a reboot message and information about the core dump into the system log.
The options are as follows:
-c
Clears the dump, so that future invocations of savecore will ignore it.
...
SENDBUG(1) - General Commands Manual # SENDBUG(1) - General Commands Manual
NAME # sendbug - report a bug in OpenBSD
SYNOPSIS # sendbug [-DEP]
DESCRIPTION # sendbug is used to submit problem reports (PRs) to the OpenBSD bugs database. A template PR is opened in a text editor with some system information already filled in, such as machine architecture, dmesg(8), usbdevs(8), pcidump(8), and acpidump(8). The pcidump(8) and acpidump(8) output are important for ACPI development and can only be included if sendbug is run as root.
...