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-rw-r--r--module/zfs/ddt_zap.c2
1 files changed, 1 insertions, 1 deletions
diff --git a/module/zfs/ddt_zap.c b/module/zfs/ddt_zap.c
index 280bff35a..6fb6ea2a3 100644
--- a/module/zfs/ddt_zap.c
+++ b/module/zfs/ddt_zap.c
@@ -70,7 +70,7 @@ ddt_zap_lookup(objset_t *os, uint64_t object, ddt_entry_t *dde)
goto out;
ASSERT(one == 1);
- ASSERT(csize <= sizeof (cbuf));
+ ASSERT(csize <= (sizeof (dde->dde_phys) + 1));
error = zap_lookup_uint64(os, object, (uint64_t *)&dde->dde_key,
DDT_KEY_WORDS, 1, csize, cbuf);