Temporary kmem_cache_alloc work around

arc.c.patch

diff --git a/usr/src/uts/common/fs/zfs/arc.c b/usr/src/uts/common/fs/zfs/arc.c
index b2cc3bd..d714f60 100644
--- a/usr/src/uts/common/fs/zfs/arc.c
+++ b/usr/src/uts/common/fs/zfs/arc.c
@@ -3713,6 +3713,13 @@ arc_hdr_realloc_crypt(arc_buf_hdr_t *hdr, boolean_t need_crypt)
        } else {
                arc_hdr_clear_flags(nhdr, ARC_FLAG_PROTECTED);
        }
+
+       // Due to lazy cons/dest in kmem_cache - clear it
+       hdr->b_l1hdr.b_acb = NULL;
+       hdr->b_l1hdr.b_pabd = NULL;
+       hdr->b_l1hdr.b_buf = NULL;
+       hdr->b_l1hdr.b_state = 0;
+
        buf_discard_identity(hdr);
        kmem_cache_free(ocache, hdr);

you need to close the comment in line 10 :)