+.TP
+.BR PTRACE_O_TRACESECCOMP " (since Linux 3.5)"
+Stop the tracee when a
+.BR seccomp (2)
+.BR SECCOMP_RET_TRACE
+rule is triggered.
+A
+.BR waitpid (2)
+by the tracer will return a
+.I status
+value such that
+
+.nf
+ status>>8 == (SIGTRAP | (PTRACE_EVENT_SECCOMP<<8))
+.fi
+
+While this triggers a
+.BR PTRACE_EVENT
+stop, it is similar to a syscall-enter-stop, in that the tracee has
+not yet entered the syscall that seccomp triggered on.
+The seccomp event message data (from the
+.BR SECCOMP_RET_DATA
+portion of the seccomp filter rule) can be retrieved with
+.BR PTRACE_GETEVENTMSG .