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diff --git a/share/man/man4/ddb.4 b/share/man/man4/ddb.4
--- a/share/man/man4/ddb.4
+++ b/share/man/man4/ddb.4
@@ -538,6 +538,14 @@
if the argument is a decimal number, or address
.Ar addr ,
otherwise.
+.Pp
+.It Ic watchdog Op Ar exp
+Program the
+.Xr watchdog 4
+timer to fire in
+.Pf 2^ Ar exp
+seconds.
+If no argument is provided, the watchdog timer is disabled.
.El
.Ss SPECIALIZED HELPER COMMANDS
.Bl -tag -width indent -compact
@@ -549,6 +557,10 @@
.Ar addr ,
if any.
.Pp
+.It Ic show Cm active trace
+.It acttrace
+Show a stack trace for every thread running on a CPU.
+.Pp
.It Ic show Cm all procs Ns Op Li / Ns Cm a
.It Ic ps Ns Op Li / Ns Cm a
Display all process information.
@@ -602,6 +614,15 @@
Dump data about APIC IDT vector mappings.
.\"
.Pp
+.It Ic show Cm badstacks
+Walk the
+.Xr witness 4
+graph and print any lock-order violations.
+This command is only available if
+.Xr witness 4
+is included in the kernel.
+.\"
+.Pp
.It Ic show Cm breaks
Show breakpoints set with the "break" command.
.\"
@@ -723,6 +744,13 @@
.Ar addr .
.\"
.Pp
+.It Ic show Cm iosched Ar addr
+Show information about the I/O scheduler
+.Vt struct cam_iosched_softc
+located at
+.Ar addr .
+.\"
+.Pp
.It Ic show Cm inodedeps Op Ar addr
Show brief information about each inodedep structure.
If
@@ -750,6 +778,22 @@
Show interrupt lines and their respective kernel threads.
.\"
.Pp
+.It Ic show Cm ktr Ns Op Li / Ns Cm a Ns Cm v Ns Cm V
+Print the contents of the
+.Xr ktr 4
+trace buffer.
+The
+.Cm v
+modifier will request fully verbose output, causing the file, line number, and
+timestamp to be printed for each trace entry.
+The
+.Cm V
+modifier will request only the timestamps to be printed.
+The
+.Cm a
+modifier will request that the output be unpaginated.
+.\"
+.Pp
.It Ic show Cm lapic
Show information from the local APIC registers for this CPU.
.\"
@@ -1170,6 +1214,10 @@
.El
.Ss OFFLINE DEBUGGING COMMANDS
.Bl -tag -width indent -compact
+.It Ic dump
+Initiate a kernel core dump to the device(s) configured by
+.Xr dumpon 8 .
+.Pp
.It Ic gdb
Switches to remote GDB mode.
In remote GDB mode, another machine is required that runs

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