diff --git a/block/bochs.c b/block/bochs.c
index 7dd2ac4..516da56 100644
--- a/block/bochs.c
+++ b/block/bochs.c
@@ -293,6 +293,7 @@ static BlockDriver bdrv_bochs = {
     .instance_size	= sizeof(BDRVBochsState),
     .bdrv_probe		= bochs_probe,
     .bdrv_open		= bochs_open,
+    .bdrv_child_perm     = bdrv_format_default_perms,
     .bdrv_refresh_limits = bochs_refresh_limits,
     .bdrv_co_preadv = bochs_co_preadv,
     .bdrv_close		= bochs_close,
diff --git a/block/cloop.c b/block/cloop.c
index 877c9b0..a6c7b9d 100644
--- a/block/cloop.c
+++ b/block/cloop.c
@@ -290,6 +290,7 @@ static BlockDriver bdrv_cloop = {
     .instance_size  = sizeof(BDRVCloopState),
     .bdrv_probe     = cloop_probe,
     .bdrv_open      = cloop_open,
+    .bdrv_child_perm     = bdrv_format_default_perms,
     .bdrv_refresh_limits = cloop_refresh_limits,
     .bdrv_co_preadv = cloop_co_preadv,
     .bdrv_close     = cloop_close,
diff --git a/block/crypto.c b/block/crypto.c
index 7cb2ff2..4a20388 100644
--- a/block/crypto.c
+++ b/block/crypto.c
@@ -628,6 +628,7 @@ BlockDriver bdrv_crypto_luks = {
     .bdrv_probe         = block_crypto_probe_luks,
     .bdrv_open          = block_crypto_open_luks,
     .bdrv_close         = block_crypto_close,
+    .bdrv_child_perm    = bdrv_format_default_perms,
     .bdrv_create        = block_crypto_create_luks,
     .bdrv_truncate      = block_crypto_truncate,
     .create_opts        = &block_crypto_create_opts_luks,
diff --git a/block/dmg.c b/block/dmg.c
index 8e387cd..a7d25fc 100644
--- a/block/dmg.c
+++ b/block/dmg.c
@@ -697,6 +697,7 @@ static BlockDriver bdrv_dmg = {
     .bdrv_probe     = dmg_probe,
     .bdrv_open      = dmg_open,
     .bdrv_refresh_limits = dmg_refresh_limits,
+    .bdrv_child_perm     = bdrv_format_default_perms,
     .bdrv_co_preadv = dmg_co_preadv,
     .bdrv_close     = dmg_close,
 };
diff --git a/block/parallels.c b/block/parallels.c
index b2ec09f..6b0c0a9 100644
--- a/block/parallels.c
+++ b/block/parallels.c
@@ -762,6 +762,7 @@ static BlockDriver bdrv_parallels = {
     .bdrv_probe		= parallels_probe,
     .bdrv_open		= parallels_open,
     .bdrv_close		= parallels_close,
+    .bdrv_child_perm          = bdrv_format_default_perms,
     .bdrv_co_get_block_status = parallels_co_get_block_status,
     .bdrv_has_zero_init       = bdrv_has_zero_init_1,
     .bdrv_co_flush_to_os      = parallels_co_flush_to_os,
diff --git a/block/qcow.c b/block/qcow.c
index 038b05a..eb5d54c 100644
--- a/block/qcow.c
+++ b/block/qcow.c
@@ -1052,6 +1052,7 @@ static BlockDriver bdrv_qcow = {
     .bdrv_probe		= qcow_probe,
     .bdrv_open		= qcow_open,
     .bdrv_close		= qcow_close,
+    .bdrv_child_perm        = bdrv_format_default_perms,
     .bdrv_reopen_prepare    = qcow_reopen_prepare,
     .bdrv_create            = qcow_create,
     .bdrv_has_zero_init     = bdrv_has_zero_init_1,
diff --git a/block/qcow2.c b/block/qcow2.c
index 21e6142..ef028f6 100644
--- a/block/qcow2.c
+++ b/block/qcow2.c
@@ -3403,6 +3403,7 @@ BlockDriver bdrv_qcow2 = {
     .bdrv_reopen_commit   = qcow2_reopen_commit,
     .bdrv_reopen_abort    = qcow2_reopen_abort,
     .bdrv_join_options    = qcow2_join_options,
+    .bdrv_child_perm      = bdrv_format_default_perms,
     .bdrv_create        = qcow2_create,
     .bdrv_has_zero_init = bdrv_has_zero_init_1,
     .bdrv_co_get_block_status = qcow2_co_get_block_status,
diff --git a/block/qed.c b/block/qed.c
index 62a0a09..d8f947a 100644
--- a/block/qed.c
+++ b/block/qed.c
@@ -1704,6 +1704,7 @@ static BlockDriver bdrv_qed = {
     .bdrv_open                = bdrv_qed_open,
     .bdrv_close               = bdrv_qed_close,
     .bdrv_reopen_prepare      = bdrv_qed_reopen_prepare,
+    .bdrv_child_perm          = bdrv_format_default_perms,
     .bdrv_create              = bdrv_qed_create,
     .bdrv_has_zero_init       = bdrv_has_zero_init_1,
     .bdrv_co_get_block_status = bdrv_qed_co_get_block_status,
diff --git a/block/vdi.c b/block/vdi.c
index 18b4773..fd6e26d 100644
--- a/block/vdi.c
+++ b/block/vdi.c
@@ -891,6 +891,7 @@ static BlockDriver bdrv_vdi = {
     .bdrv_open = vdi_open,
     .bdrv_close = vdi_close,
     .bdrv_reopen_prepare = vdi_reopen_prepare,
+    .bdrv_child_perm          = bdrv_format_default_perms,
     .bdrv_create = vdi_create,
     .bdrv_has_zero_init = bdrv_has_zero_init_1,
     .bdrv_co_get_block_status = vdi_co_get_block_status,
diff --git a/block/vhdx.c b/block/vhdx.c
index 9918ee9..ab747f6 100644
--- a/block/vhdx.c
+++ b/block/vhdx.c
@@ -1983,6 +1983,7 @@ static BlockDriver bdrv_vhdx = {
     .bdrv_open              = vhdx_open,
     .bdrv_close             = vhdx_close,
     .bdrv_reopen_prepare    = vhdx_reopen_prepare,
+    .bdrv_child_perm        = bdrv_format_default_perms,
     .bdrv_co_readv          = vhdx_co_readv,
     .bdrv_co_writev         = vhdx_co_writev,
     .bdrv_create            = vhdx_create,
diff --git a/block/vmdk.c b/block/vmdk.c
index 9d68ec5..f5e2fb5 100644
--- a/block/vmdk.c
+++ b/block/vmdk.c
@@ -2359,6 +2359,7 @@ static BlockDriver bdrv_vmdk = {
     .bdrv_open                    = vmdk_open,
     .bdrv_check                   = vmdk_check,
     .bdrv_reopen_prepare          = vmdk_reopen_prepare,
+    .bdrv_child_perm              = bdrv_format_default_perms,
     .bdrv_co_preadv               = vmdk_co_preadv,
     .bdrv_co_pwritev              = vmdk_co_pwritev,
     .bdrv_co_pwritev_compressed   = vmdk_co_pwritev_compressed,
diff --git a/block/vpc.c b/block/vpc.c
index d0df2a1..b9c9832 100644
--- a/block/vpc.c
+++ b/block/vpc.c
@@ -1067,6 +1067,7 @@ static BlockDriver bdrv_vpc = {
     .bdrv_open              = vpc_open,
     .bdrv_close             = vpc_close,
     .bdrv_reopen_prepare    = vpc_reopen_prepare,
+    .bdrv_child_perm        = bdrv_format_default_perms,
     .bdrv_create            = vpc_create,
 
     .bdrv_co_preadv             = vpc_co_preadv,
