diff --git a/qa/kern/broken.c b/qa/kern/broken.c
new file mode 100644
index 0000000..5098929
--- /dev/null
+++ b/qa/kern/broken.c
@@ -0,0 +1,25 @@
+/*
+ * This file is part of Jehanne.
+ *
+ * Copyright (C) 2017 Giacomo Tesio <giacomo@tesio.it>
+ *
+ * Jehanne is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, version 2 of the License.
+ *
+ * Jehanne is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with Jehanne.  If not, see <http://www.gnu.org/licenses/>.
+ */
+#include <u.h>
+#include <lib9.h>
+
+void
+main(void)
+{
+	abort();
+}
diff --git a/qa/kern/broken.runner b/qa/kern/broken.runner
new file mode 100755
index 0000000..2031d8e
--- /dev/null
+++ b/qa/kern/broken.runner
@@ -0,0 +1,24 @@
+#!/cmd/rc
+
+runner=$0
+test = `{echo $runner|sed 's/.runner//'}
+test_output = /tmp/output-`{basename $test}
+
+if ( test -e $test_output) rm $test_output
+
+$test > $test_output >[2=1] &
+testpid=$apid
+
+sleep 3
+
+wait $testpid
+
+if ( cat $test_output | grep suicide > /dev/null ) {
+	rm $test_output
+	echo PASS
+	exit PASS
+}
+cat $test_output
+echo FAIL
+exit FAIL
+
diff --git a/qa/kern/build.json b/qa/kern/build.json
index 3bc6203..c9cb96c 100644
--- a/qa/kern/build.json
+++ b/qa/kern/build.json
@@ -15,6 +15,7 @@
 			"awake_note0.c",
 			"awake_note1.c",
 			"brk.c",
+			"broken.c",
 			"execl.c",
 			"float.c",
 			"fork.c",
diff --git a/sys/src/kern/port/proc.c b/sys/src/kern/port/proc.c
index 05b5826..74afb10 100644
--- a/sys/src/kern/port/proc.c
+++ b/sys/src/kern/port/proc.c
@@ -1057,6 +1057,9 @@ addbroken(Proc *p)
 	broken.p[broken.n++] = p;
 	qunlock(&broken);
 
+	dumpaproc(p);
+	dumpregs(p->dbgreg);
+
 	p->state = Broken;
 	p->psstate = 0;
 	sched();