From e242b67cee1dbaf09a27e7c78c55c5505ac88ff4 Mon Sep 17 00:00:00 2001
From: Igor K <igor@dilos.org>
Date: Tue, 3 Sep 2019 22:12:31 +0300
Subject: [PATCH] Fix panic on DilOS with kstat per dataset statistics

Account for ZFS_MAX_DATASET_NAME_LEN in kstat data size.  This value
is ignored in the Linux kstat code but resolves the issue for other
platforms.

Reviewed-by: Serapheim Dimitropoulos <serapheim@delphix.com>
Reviewed-by: Brian Behlendorf <behlendorf1@llnl.gov>
Signed-off-by: Igor Kozhukhov <igor@dilos.org>
Closes #9254
Closes #9151
---
 module/zfs/dataset_kstats.c | 1 +
 1 file changed, 1 insertion(+)

diff --git a/module/zfs/dataset_kstats.c b/module/zfs/dataset_kstats.c
index 522825c42ccf..e46a0926d557 100644
--- a/module/zfs/dataset_kstats.c
+++ b/module/zfs/dataset_kstats.c
@@ -135,6 +135,7 @@ dataset_kstats_create(dataset_kstats_t *dk, objset_t *objset)
 	kstat->ks_data = dk_kstats;
 	kstat->ks_update = dataset_kstats_update;
 	kstat->ks_private = dk;
+	kstat->ks_data_size += ZFS_MAX_DATASET_NAME_LEN;
 
 	kstat_install(kstat);
 	dk->dk_kstats = kstat;