diff --git a/tools/test/stress2/misc/all.exclude b/tools/test/stress2/misc/all.exclude
index 9b33cf1a1f23..62ddde1b7ca8 100644
--- a/tools/test/stress2/misc/all.exclude
+++ b/tools/test/stress2/misc/all.exclude
@@ -51,6 +51,7 @@ quota7.sh		panic: dqflush: stray dquot					20120221
 sctp3.sh		panic: Queues are not empty when handling SHUTDOWN-COMPLETE	20210211
 sendfile25.sh		WiP								20200611
 signal.sh		Timing issues. Needs fixing					20171116
+snap8.sh		panic: handle_workitem_remove: bad dir delta			20210619
 swapoff2.sh		swap_pager_force_pagein: read from swap failed			20171223
 swapoff5.sh		log0005.txt, known issue					20210111
 systrace.sh		WiP								20200227
diff --git a/tools/test/stress2/misc/snap8.sh b/tools/test/stress2/misc/snap8.sh
index 412cd06805af..ffe33593bc6e 100755
--- a/tools/test/stress2/misc/snap8.sh
+++ b/tools/test/stress2/misc/snap8.sh
@@ -32,6 +32,9 @@
 # kern/94769: [ufs] Multiple file deletions on multi-snapshotted filesystems
 # causes hang
 
+# panic: handle_workitem_remove: bad dir delta
+# https://people.freebsd.org/~pho/stress/log/log0121.txt
+
 [ `id -u ` -ne 0 ] && echo "Must be root!" && exit 1
 
 . ../default.cfg