[PATCH 0/3] Use g_new() & friends where that makes obvious

[PATCH 0/3] Use g_new() & friends where that makes obvious

[Markus Armbruster]

g_new(T, n) is neater than g_malloc(sizeof(T) * n).  It's also safer,
for two reasons.  One, it catches multiplication overflowing size_t.
Two, it returns T * rather than void *, which lets the compiler catch
more type errors.

This series only touches allocations with size arguments of the form
sizeof(T).  It's mechanical, except for a tiny fix in PATCH 2.

PATCH 1 adds the Coccinelle script.

PATCH 2 cleans up the virtio-9p subsystem, and fixes a harmless typing
error uncovered by the cleanup.

PATCH 3 cleans up everything else.  I started to split it up, but
splitting is a lot of decisions, and I just can't see the value.

For instance, MAINTAINERS tells me to split for subsystem "virtio",
patching

    hw/char/virtio-serial-bus.c
    hw/display/virtio-gpu.c
    hw/net/virtio-net.c
    hw/virtio/virtio-crypto.c
    hw/virtio/virtio-iommu.c
    hw/virtio/virtio.c

But it also tells me to split for subsystem "Character devices",
patching

    hw/char/parallel.c                       |  2 +-
    hw/char/riscv_htif.c                     |  2 +-
    hw/char/virtio-serial-bus.c              |  6 +-

and for subsystem "Network devices", patching

    hw/net/virtio-net.c

and for subsystem "virtio-gpu", patching

    hw/display/virtio-gpu.c

I guess I'd go with "virtio".  Six files down, 103 to go.  Thanks, but
no thanks.

Since the transformation is local to a function call, dropping is
completely safe.  We can deal with conflicts by dropping conflicting
hunks, with "git-pull -s recursive -X ours".  Or drop entire files
with conflicts.

If you want me to split off certain parts, please tell me exactly what
you want split off, and I'll gladly do the splitting.  I don't mind
the splitting part, I do mind the *thinking* part.

Markus Armbruster (3):
  scripts/coccinelle: New use-g_new-etc.cocci
  9pfs: Use g_new() & friends where that makes obvious sense
  Use g_new() & friends where that makes obvious sense

 scripts/coccinelle/use-g_new-etc.cocci   | 75 ++++++++++++++++++++++++
 include/qemu/timer.h                     |  2 +-
 accel/kvm/kvm-all.c                      |  6 +-
 accel/tcg/tcg-accel-ops-mttcg.c          |  2 +-
 accel/tcg/tcg-accel-ops-rr.c             |  4 +-
 audio/audio.c                            |  4 +-
 audio/audio_legacy.c                     |  6 +-
 audio/dsoundaudio.c                      |  2 +-
 audio/jackaudio.c                        |  6 +-
 audio/paaudio.c                          |  4 +-
 backends/cryptodev.c                     |  2 +-
 contrib/vhost-user-gpu/vhost-user-gpu.c  |  2 +-
 cpus-common.c                            |  4 +-
 dump/dump.c                              |  2 +-
 hw/9pfs/9p-proxy.c                       |  2 +-
 hw/9pfs/9p-synth.c                       |  4 +-
 hw/9pfs/9p.c                             |  8 +--
 hw/9pfs/codir.c                          |  6 +-
 hw/acpi/hmat.c                           |  2 +-
 hw/audio/intel-hda.c                     |  2 +-
 hw/char/parallel.c                       |  2 +-
 hw/char/riscv_htif.c                     |  2 +-
 hw/char/virtio-serial-bus.c              |  6 +-
 hw/core/irq.c                            |  2 +-
 hw/core/reset.c                          |  2 +-
 hw/display/pxa2xx_lcd.c                  |  2 +-
 hw/display/tc6393xb.c                    |  2 +-
 hw/display/virtio-gpu.c                  |  4 +-
 hw/display/xenfb.c                       |  4 +-
 hw/dma/rc4030.c                          |  4 +-
 hw/i2c/core.c                            |  4 +-
 hw/i2c/i2c_mux_pca954x.c                 |  2 +-
 hw/i386/amd_iommu.c                      |  4 +-
 hw/i386/intel_iommu.c                    |  2 +-
 hw/i386/xen/xen-hvm.c                    | 10 ++--
 hw/i386/xen/xen-mapcache.c               | 14 ++---
 hw/input/lasips2.c                       |  2 +-
 hw/input/pckbd.c                         |  2 +-
 hw/input/ps2.c                           |  4 +-
 hw/input/pxa2xx_keypad.c                 |  2 +-
 hw/input/tsc2005.c                       |  3 +-
 hw/intc/riscv_aclint.c                   |  6 +-
 hw/intc/xics.c                           |  2 +-
 hw/m68k/virt.c                           |  2 +-
 hw/mips/mipssim.c                        |  2 +-
 hw/misc/applesmc.c                       |  2 +-
 hw/misc/imx6_src.c                       |  2 +-
 hw/misc/ivshmem.c                        |  4 +-
 hw/net/virtio-net.c                      |  4 +-
 hw/nvme/ns.c                             |  2 +-
 hw/pci-host/pnv_phb3.c                   |  2 +-
 hw/pci-host/pnv_phb4.c                   |  2 +-
 hw/pci/pcie_sriov.c                      |  2 +-
 hw/ppc/e500.c                            |  2 +-
 hw/ppc/ppc.c                             |  8 +--
 hw/ppc/ppc405_boards.c                   |  4 +-
 hw/ppc/ppc405_uc.c                       | 18 +++---
 hw/ppc/ppc4xx_devs.c                     |  2 +-
 hw/ppc/ppc_booke.c                       |  4 +-
 hw/ppc/spapr.c                           |  2 +-
 hw/ppc/spapr_events.c                    |  2 +-
 hw/ppc/spapr_hcall.c                     |  2 +-
 hw/ppc/spapr_numa.c                      |  3 +-
 hw/rdma/vmw/pvrdma_dev_ring.c            |  2 +-
 hw/rdma/vmw/pvrdma_qp_ops.c              |  6 +-
 hw/sh4/r2d.c                             |  4 +-
 hw/sh4/sh7750.c                          |  2 +-
 hw/sparc/leon3.c                         |  2 +-
 hw/sparc64/sparc64.c                     |  4 +-
 hw/timer/arm_timer.c                     |  2 +-
 hw/timer/slavio_timer.c                  |  2 +-
 hw/vfio/pci.c                            |  4 +-
 hw/vfio/platform.c                       |  4 +-
 hw/virtio/virtio-crypto.c                |  2 +-
 hw/virtio/virtio-iommu.c                 |  2 +-
 hw/virtio/virtio.c                       |  5 +-
 hw/xtensa/xtfpga.c                       |  2 +-
 linux-user/syscall.c                     |  2 +-
 migration/dirtyrate.c                    |  4 +-
 migration/multifd-zlib.c                 |  4 +-
 migration/ram.c                          |  2 +-
 monitor/misc.c                           |  2 +-
 monitor/qmp-cmds.c                       |  2 +-
 qga/commands-win32.c                     |  8 +--
 qga/commands.c                           |  2 +-
 qom/qom-qmp-cmds.c                       |  2 +-
 replay/replay-char.c                     |  4 +-
 replay/replay-events.c                   | 10 ++--
 scripts/coverity-scan/model.c            |  2 +-
 semihosting/config.c                     |  2 +-
 softmmu/bootdevice.c                     |  4 +-
 softmmu/dma-helpers.c                    |  4 +-
 softmmu/memory_mapping.c                 |  2 +-
 target/i386/cpu-sysemu.c                 |  2 +-
 target/i386/hax/hax-accel-ops.c          |  4 +-
 target/i386/nvmm/nvmm-accel-ops.c        |  4 +-
 target/i386/whpx/whpx-accel-ops.c        |  4 +-
 target/i386/whpx/whpx-all.c              |  2 +-
 target/s390x/cpu-sysemu.c                |  2 +-
 tests/qtest/virtio-9p-test.c             |  4 +-
 tests/unit/test-hbitmap.c                |  2 +-
 tests/unit/test-qmp-cmds.c               | 14 ++---
 tests/unit/test-qobject-output-visitor.c |  2 +-
 tests/unit/test-vmstate.c                | 42 ++++++-------
 ui/vnc-enc-tight.c                       |  2 +-
 util/envlist.c                           |  2 +-
 util/hbitmap.c                           |  2 +-
 util/main-loop.c                         |  2 +-
 util/qemu-timer.c                        |  2 +-
 util/vfio-helpers.c                      |  4 +-
 110 files changed, 284 insertions(+), 214 deletions(-)
 create mode 100644 scripts/coccinelle/use-g_new-etc.cocci

--
2.35.1

[PATCH 1/3] scripts/coccinelle: New use-g_new-etc.cocci

[Markus Armbruster]

This is the semantic patch from commit b45c03f585 "arm: Use g_new() &
friends where that makes obvious sense".

Signed-off-by: Markus Armbruster <armbru@redhat.com>
---
 scripts/coccinelle/use-g_new-etc.cocci | 75 ++++++++++++++++++++++++++
 1 file changed, 75 insertions(+)
 create mode 100644 scripts/coccinelle/use-g_new-etc.cocci

diff --git a/scripts/coccinelle/use-g_new-etc.cocci b/scripts/coccinelle/use-g_new-etc.cocci
new file mode 100644
index 0000000000..e2280e93b3
--- /dev/null
+++ b/scripts/coccinelle/use-g_new-etc.cocci
@@ -0,0 +1,75 @@
+// Use g_new() & friends where that makes obvious sense
+@@
+type T;
+@@
+-g_malloc(sizeof(T))
++g_new(T, 1)
+@@
+type T;
+@@
+-g_try_malloc(sizeof(T))
++g_try_new(T, 1)
+@@
+type T;
+@@
+-g_malloc0(sizeof(T))
++g_new0(T, 1)
+@@
+type T;
+@@
+-g_try_malloc0(sizeof(T))
++g_try_new0(T, 1)
+@@
+type T;
+expression n;
+@@
+-g_malloc(sizeof(T) * (n))
++g_new(T, n)
+@@
+type T;
+expression n;
+@@
+-g_try_malloc(sizeof(T) * (n))
++g_try_new(T, n)
+@@
+type T;
+expression n;
+@@
+-g_malloc0(sizeof(T) * (n))
++g_new0(T, n)
+@@
+type T;
+expression n;
+@@
+-g_try_malloc0(sizeof(T) * (n))
++g_try_new0(T, n)
+@@
+type T;
+expression p, n;
+@@
+-g_realloc(p, sizeof(T) * (n))
++g_renew(T, p, n)
+@@
+type T;
+expression p, n;
+@@
+-g_try_realloc(p, sizeof(T) * (n))
++g_try_renew(T, p, n)
+@@
+type T;
+expression n;
+@@
+-(T *)g_new(T, n)
++g_new(T, n)
+@@
+type T;
+expression n;
+@@
+-(T *)g_new0(T, n)
++g_new0(T, n)
+@@
+type T;
+expression p, n;
+@@
+-(T *)g_renew(T, p, n)
++g_renew(T, p, n)
-- 
2.35.1

Re: [PATCH 1/3] scripts/coccinelle: New use-g_new-etc.cocci

[Richard Henderson]

On 3/14/22 09:01, Markus Armbruster wrote:
> This is the semantic patch from commit b45c03f585 "arm: Use g_new() &
> friends where that makes obvious sense".
> 
> Signed-off-by: Markus Armbruster<armbru@redhat.com>
> ---
>   scripts/coccinelle/use-g_new-etc.cocci | 75 ++++++++++++++++++++++++++
>   1 file changed, 75 insertions(+)
>   create mode 100644 scripts/coccinelle/use-g_new-etc.cocci

Reviewed-by: Richard Henderson <richard.henderson@linaro.org>

r~

Re: [PATCH 1/3] scripts/coccinelle: New use-g_new-etc.cocci

[Alex Bennée]

Markus Armbruster <armbru@redhat.com> writes:

> This is the semantic patch from commit b45c03f585 "arm: Use g_new() &
> friends where that makes obvious sense".
>
> Signed-off-by: Markus Armbruster <armbru@redhat.com>

Reviewed-by: Alex Bennée <alex.bennee@linaro.org>

-- 
Alex Bennée

[PATCH 2/3] 9pfs: Use g_new() & friends where that makes obvious sense

[Markus Armbruster]

g_new(T, n) is neater than g_malloc(sizeof(T) * n).  It's also safer,
for two reasons.  One, it catches multiplication overflowing size_t.
Two, it returns T * rather than void *, which lets the compiler catch
more type errors.

This commit only touches allocations with size arguments of the form
sizeof(T).

Patch created mechanically with:

    $ spatch --in-place --sp-file scripts/coccinelle/use-g_new-etc.cocci \
	     --macro-file scripts/cocci-macro-file.h FILES...

Except this uncovers a typing error:

    ../hw/9pfs/9p.c:855:13: warning: incompatible pointer types assigning to 'QpfEntry *' from 'QppEntry *' [-Wincompatible-pointer-types]
	    val = g_new0(QppEntry, 1);
		^ ~~~~~~~~~~~~~~~~~~~
    1 warning generated.

Harmless, because QppEntry is larger than QpfEntry.  Fix to allocate a
QpfEntry instead.

Cc: Greg Kurz <groug@kaod.org>
Cc: Christian Schoenebeck <qemu_oss@crudebyte.com>
Signed-off-by: Markus Armbruster <armbru@redhat.com>
---
 hw/9pfs/9p-proxy.c           | 2 +-
 hw/9pfs/9p-synth.c           | 4 ++--
 hw/9pfs/9p.c                 | 8 ++++----
 hw/9pfs/codir.c              | 6 +++---
 tests/qtest/virtio-9p-test.c | 4 ++--
 5 files changed, 12 insertions(+), 12 deletions(-)

diff --git a/hw/9pfs/9p-proxy.c b/hw/9pfs/9p-proxy.c
index 8b4b5cf7dc..4c5e0fc217 100644
--- a/hw/9pfs/9p-proxy.c
+++ b/hw/9pfs/9p-proxy.c
@@ -1187,7 +1187,7 @@ static int proxy_parse_opts(QemuOpts *opts, FsDriverEntry *fs, Error **errp)
 
 static int proxy_init(FsContext *ctx, Error **errp)
 {
-    V9fsProxy *proxy = g_malloc(sizeof(V9fsProxy));
+    V9fsProxy *proxy = g_new(V9fsProxy, 1);
     int sock_id;
 
     if (ctx->export_flags & V9FS_PROXY_SOCK_NAME) {
diff --git a/hw/9pfs/9p-synth.c b/hw/9pfs/9p-synth.c
index b3080e415b..d99d263985 100644
--- a/hw/9pfs/9p-synth.c
+++ b/hw/9pfs/9p-synth.c
@@ -49,7 +49,7 @@ static V9fsSynthNode *v9fs_add_dir_node(V9fsSynthNode *parent, int mode,
 
     /* Add directory type and remove write bits */
     mode = ((mode & 0777) | S_IFDIR) & ~(S_IWUSR | S_IWGRP | S_IWOTH);
-    node = g_malloc0(sizeof(V9fsSynthNode));
+    node = g_new0(V9fsSynthNode, 1);
     if (attr) {
         /* We are adding .. or . entries */
         node->attr = attr;
@@ -128,7 +128,7 @@ int qemu_v9fs_synth_add_file(V9fsSynthNode *parent, int mode,
     }
     /* Add file type and remove write bits */
     mode = ((mode & 0777) | S_IFREG);
-    node = g_malloc0(sizeof(V9fsSynthNode));
+    node = g_new0(V9fsSynthNode, 1);
     node->attr         = &node->actual_attr;
     node->attr->inode  = synth_node_count++;
     node->attr->nlink  = 1;
diff --git a/hw/9pfs/9p.c b/hw/9pfs/9p.c
index a6d6b3f835..8e9d4aea73 100644
--- a/hw/9pfs/9p.c
+++ b/hw/9pfs/9p.c
@@ -324,7 +324,7 @@ static V9fsFidState *alloc_fid(V9fsState *s, int32_t fid)
             return NULL;
         }
     }
-    f = g_malloc0(sizeof(V9fsFidState));
+    f = g_new0(V9fsFidState, 1);
     f->fid = fid;
     f->fid_type = P9_FID_NONE;
     f->ref = 1;
@@ -804,7 +804,7 @@ static int qid_inode_prefix_hash_bits(V9fsPDU *pdu, dev_t dev)
 
     val = qht_lookup(&pdu->s->qpd_table, &lookup, hash);
     if (!val) {
-        val = g_malloc0(sizeof(QpdEntry));
+        val = g_new0(QpdEntry, 1);
         *val = lookup;
         affix = affixForIndex(pdu->s->qp_affix_next);
         val->prefix_bits = affix.bits;
@@ -852,7 +852,7 @@ static int qid_path_fullmap(V9fsPDU *pdu, const struct stat *stbuf,
             return -ENFILE;
         }
 
-        val = g_malloc0(sizeof(QppEntry));
+        val = g_new0(QpfEntry, 1);
         *val = lookup;
 
         /* new unique inode and device combo */
@@ -928,7 +928,7 @@ static int qid_path_suffixmap(V9fsPDU *pdu, const struct stat *stbuf,
             return -ENFILE;
         }
 
-        val = g_malloc0(sizeof(QppEntry));
+        val = g_new0(QppEntry, 1);
         *val = lookup;
 
         /* new unique inode affix and device combo */
diff --git a/hw/9pfs/codir.c b/hw/9pfs/codir.c
index 75148bc985..93ba44fb75 100644
--- a/hw/9pfs/codir.c
+++ b/hw/9pfs/codir.c
@@ -141,9 +141,9 @@ static int do_readdir_many(V9fsPDU *pdu, V9fsFidState *fidp,
 
         /* append next node to result chain */
         if (!e) {
-            *entries = e = g_malloc0(sizeof(V9fsDirEnt));
+            *entries = e = g_new0(V9fsDirEnt, 1);
         } else {
-            e = e->next = g_malloc0(sizeof(V9fsDirEnt));
+            e = e->next = g_new0(V9fsDirEnt, 1);
         }
         e->dent = qemu_dirent_dup(dent);
 
@@ -163,7 +163,7 @@ static int do_readdir_many(V9fsPDU *pdu, V9fsFidState *fidp,
                 break;
             }
 
-            e->st = g_malloc0(sizeof(struct stat));
+            e->st = g_new0(struct stat, 1);
             memcpy(e->st, &stbuf, sizeof(struct stat));
         }
 
diff --git a/tests/qtest/virtio-9p-test.c b/tests/qtest/virtio-9p-test.c
index 01ca076afe..e28c71bd8f 100644
--- a/tests/qtest/virtio-9p-test.c
+++ b/tests/qtest/virtio-9p-test.c
@@ -468,12 +468,12 @@ static void v9fs_rreaddir(P9Req *req, uint32_t *count, uint32_t *nentries,
          togo -= 13 + 8 + 1 + 2 + slen, ++n)
     {
         if (!e) {
-            e = g_malloc(sizeof(struct V9fsDirent));
+            e = g_new(struct V9fsDirent, 1);
             if (entries) {
                 *entries = e;
             }
         } else {
-            e = e->next = g_malloc(sizeof(struct V9fsDirent));
+            e = e->next = g_new(struct V9fsDirent, 1);
         }
         e->next = NULL;
         /* qid[13] offset[8] type[1] name[s] */
-- 
2.35.1

Re: [PATCH 2/3] 9pfs: Use g_new() & friends where that makes obvious sense

[Christian Schoenebeck]

On Montag, 14. März 2022 17:01:07 CET Markus Armbruster wrote:
> g_new(T, n) is neater than g_malloc(sizeof(T) * n).  It's also safer,
> for two reasons.  One, it catches multiplication overflowing size_t.
> Two, it returns T * rather than void *, which lets the compiler catch
> more type errors.
> 
> This commit only touches allocations with size arguments of the form
> sizeof(T).
> 
> Patch created mechanically with:
> 
>     $ spatch --in-place --sp-file scripts/coccinelle/use-g_new-etc.cocci \
> 	     --macro-file scripts/cocci-macro-file.h FILES...
> 
> Except this uncovers a typing error:
> 
>     ../hw/9pfs/9p.c:855:13: warning: incompatible pointer types assigning to
> 'QpfEntry *' from 'QppEntry *' [-Wincompatible-pointer-types] val =
> g_new0(QppEntry, 1);
> 		^ ~~~~~~~~~~~~~~~~~~~
>     1 warning generated.
> 
> Harmless, because QppEntry is larger than QpfEntry.  Fix to allocate a
> QpfEntry instead.
> 
> Cc: Greg Kurz <groug@kaod.org>
> Cc: Christian Schoenebeck <qemu_oss@crudebyte.com>
> Signed-off-by: Markus Armbruster <armbru@redhat.com>
> ---

Reviewed-by: Christian Schoenebeck <qemu_oss@crudebyte.com>

>  hw/9pfs/9p-proxy.c           | 2 +-
>  hw/9pfs/9p-synth.c           | 4 ++--
>  hw/9pfs/9p.c                 | 8 ++++----
>  hw/9pfs/codir.c              | 6 +++---
>  tests/qtest/virtio-9p-test.c | 4 ++--
>  5 files changed, 12 insertions(+), 12 deletions(-)
> 
> diff --git a/hw/9pfs/9p-proxy.c b/hw/9pfs/9p-proxy.c
> index 8b4b5cf7dc..4c5e0fc217 100644
> --- a/hw/9pfs/9p-proxy.c
> +++ b/hw/9pfs/9p-proxy.c
> @@ -1187,7 +1187,7 @@ static int proxy_parse_opts(QemuOpts *opts,
> FsDriverEntry *fs, Error **errp)
> 
>  static int proxy_init(FsContext *ctx, Error **errp)
>  {
> -    V9fsProxy *proxy = g_malloc(sizeof(V9fsProxy));
> +    V9fsProxy *proxy = g_new(V9fsProxy, 1);
>      int sock_id;
> 
>      if (ctx->export_flags & V9FS_PROXY_SOCK_NAME) {
> diff --git a/hw/9pfs/9p-synth.c b/hw/9pfs/9p-synth.c
> index b3080e415b..d99d263985 100644
> --- a/hw/9pfs/9p-synth.c
> +++ b/hw/9pfs/9p-synth.c
> @@ -49,7 +49,7 @@ static V9fsSynthNode *v9fs_add_dir_node(V9fsSynthNode
> *parent, int mode,
> 
>      /* Add directory type and remove write bits */
>      mode = ((mode & 0777) | S_IFDIR) & ~(S_IWUSR | S_IWGRP | S_IWOTH);
> -    node = g_malloc0(sizeof(V9fsSynthNode));
> +    node = g_new0(V9fsSynthNode, 1);
>      if (attr) {
>          /* We are adding .. or . entries */
>          node->attr = attr;
> @@ -128,7 +128,7 @@ int qemu_v9fs_synth_add_file(V9fsSynthNode *parent, int
> mode, }
>      /* Add file type and remove write bits */
>      mode = ((mode & 0777) | S_IFREG);
> -    node = g_malloc0(sizeof(V9fsSynthNode));
> +    node = g_new0(V9fsSynthNode, 1);
>      node->attr         = &node->actual_attr;
>      node->attr->inode  = synth_node_count++;
>      node->attr->nlink  = 1;
> diff --git a/hw/9pfs/9p.c b/hw/9pfs/9p.c
> index a6d6b3f835..8e9d4aea73 100644
> --- a/hw/9pfs/9p.c
> +++ b/hw/9pfs/9p.c
> @@ -324,7 +324,7 @@ static V9fsFidState *alloc_fid(V9fsState *s, int32_t
> fid) return NULL;
>          }
>      }
> -    f = g_malloc0(sizeof(V9fsFidState));
> +    f = g_new0(V9fsFidState, 1);
>      f->fid = fid;
>      f->fid_type = P9_FID_NONE;
>      f->ref = 1;
> @@ -804,7 +804,7 @@ static int qid_inode_prefix_hash_bits(V9fsPDU *pdu,
> dev_t dev)
> 
>      val = qht_lookup(&pdu->s->qpd_table, &lookup, hash);
>      if (!val) {
> -        val = g_malloc0(sizeof(QpdEntry));
> +        val = g_new0(QpdEntry, 1);
>          *val = lookup;
>          affix = affixForIndex(pdu->s->qp_affix_next);
>          val->prefix_bits = affix.bits;
> @@ -852,7 +852,7 @@ static int qid_path_fullmap(V9fsPDU *pdu, const struct
> stat *stbuf, return -ENFILE;
>          }
> 
> -        val = g_malloc0(sizeof(QppEntry));
> +        val = g_new0(QpfEntry, 1);
>          *val = lookup;
> 
>          /* new unique inode and device combo */
> @@ -928,7 +928,7 @@ static int qid_path_suffixmap(V9fsPDU *pdu, const struct
> stat *stbuf, return -ENFILE;
>          }
> 
> -        val = g_malloc0(sizeof(QppEntry));
> +        val = g_new0(QppEntry, 1);
>          *val = lookup;
> 
>          /* new unique inode affix and device combo */
> diff --git a/hw/9pfs/codir.c b/hw/9pfs/codir.c
> index 75148bc985..93ba44fb75 100644
> --- a/hw/9pfs/codir.c
> +++ b/hw/9pfs/codir.c
> @@ -141,9 +141,9 @@ static int do_readdir_many(V9fsPDU *pdu, V9fsFidState
> *fidp,
> 
>          /* append next node to result chain */
>          if (!e) {
> -            *entries = e = g_malloc0(sizeof(V9fsDirEnt));
> +            *entries = e = g_new0(V9fsDirEnt, 1);
>          } else {
> -            e = e->next = g_malloc0(sizeof(V9fsDirEnt));
> +            e = e->next = g_new0(V9fsDirEnt, 1);
>          }
>          e->dent = qemu_dirent_dup(dent);
> 
> @@ -163,7 +163,7 @@ static int do_readdir_many(V9fsPDU *pdu, V9fsFidState
> *fidp, break;
>              }
> 
> -            e->st = g_malloc0(sizeof(struct stat));
> +            e->st = g_new0(struct stat, 1);
>              memcpy(e->st, &stbuf, sizeof(struct stat));
>          }
> 
> diff --git a/tests/qtest/virtio-9p-test.c b/tests/qtest/virtio-9p-test.c
> index 01ca076afe..e28c71bd8f 100644
> --- a/tests/qtest/virtio-9p-test.c
> +++ b/tests/qtest/virtio-9p-test.c
> @@ -468,12 +468,12 @@ static void v9fs_rreaddir(P9Req *req, uint32_t *count,
> uint32_t *nentries, togo -= 13 + 8 + 1 + 2 + slen, ++n)
>      {
>          if (!e) {
> -            e = g_malloc(sizeof(struct V9fsDirent));
> +            e = g_new(struct V9fsDirent, 1);
>              if (entries) {
>                  *entries = e;
>              }
>          } else {
> -            e = e->next = g_malloc(sizeof(struct V9fsDirent));
> +            e = e->next = g_new(struct V9fsDirent, 1);
>          }
>          e->next = NULL;
>          /* qid[13] offset[8] type[1] name[s] */

Re: [PATCH 2/3] 9pfs: Use g_new() & friends where that makes obvious sense

[Philippe Mathieu-Daudé]

Hi Christian,

On 14/3/22 17:42, Christian Schoenebeck wrote:
> On Montag, 14. März 2022 17:01:07 CET Markus Armbruster wrote:
>> g_new(T, n) is neater than g_malloc(sizeof(T) * n).  It's also safer,
>> for two reasons.  One, it catches multiplication overflowing size_t.
>> Two, it returns T * rather than void *, which lets the compiler catch
>> more type errors.
>>
>> This commit only touches allocations with size arguments of the form
>> sizeof(T).
>>
>> Patch created mechanically with:
>>
>>      $ spatch --in-place --sp-file scripts/coccinelle/use-g_new-etc.cocci \
>> 	     --macro-file scripts/cocci-macro-file.h FILES...
>>
>> Except this uncovers a typing error:
>>
>>      ../hw/9pfs/9p.c:855:13: warning: incompatible pointer types assigning to
>> 'QpfEntry *' from 'QppEntry *' [-Wincompatible-pointer-types] val =
>> g_new0(QppEntry, 1);
>> 		^ ~~~~~~~~~~~~~~~~~~~
>>      1 warning generated.
>>
>> Harmless, because QppEntry is larger than QpfEntry.  Fix to allocate a
>> QpfEntry instead.
>>
>> Cc: Greg Kurz <groug@kaod.org>
>> Cc: Christian Schoenebeck <qemu_oss@crudebyte.com>
>> Signed-off-by: Markus Armbruster <armbru@redhat.com>
>> ---
> 
> Reviewed-by: Christian Schoenebeck <qemu_oss@crudebyte.com>

FYI your domain is also quarantined by Google:

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RCVD_IN_DNSWL_FAIL(0.00)[91.194.90.13:server fail]
X-Rspamd-Server: atlanta189

Re: [PATCH 2/3] 9pfs: Use g_new() & friends where that makes obvious sense

[Christian Schoenebeck]

On Montag, 14. März 2022 19:46:59 CET Philippe Mathieu-Daudé wrote:
> Hi Christian,

Hi Philippe,

> On 14/3/22 17:42, Christian Schoenebeck wrote:
> > On Montag, 14. März 2022 17:01:07 CET Markus Armbruster wrote:
> >> g_new(T, n) is neater than g_malloc(sizeof(T) * n).  It's also safer,
> >> for two reasons.  One, it catches multiplication overflowing size_t.
> >> Two, it returns T * rather than void *, which lets the compiler catch
> >> more type errors.
> >> 
> >> This commit only touches allocations with size arguments of the form
> >> sizeof(T).
> >> 
> >> Patch created mechanically with:
> >>      $ spatch --in-place --sp-file scripts/coccinelle/use-g_new-etc.cocci
> >>      \
> >>      
> >> 	     --macro-file scripts/cocci-macro-file.h FILES...
> >> 
> >> Except this uncovers a typing error:
> >>      ../hw/9pfs/9p.c:855:13: warning: incompatible pointer types
> >>      assigning to
> >> 
> >> 'QpfEntry *' from 'QppEntry *' [-Wincompatible-pointer-types] val =
> >> g_new0(QppEntry, 1);
> >> 
> >> 		^ ~~~~~~~~~~~~~~~~~~~
> >> 		
> >>      1 warning generated.
> >> 
> >> Harmless, because QppEntry is larger than QpfEntry.  Fix to allocate a
> >> QpfEntry instead.
> >> 
> >> Cc: Greg Kurz <groug@kaod.org>
> >> Cc: Christian Schoenebeck <qemu_oss@crudebyte.com>
> >> Signed-off-by: Markus Armbruster <armbru@redhat.com>
> >> ---
> > 
> > Reviewed-by: Christian Schoenebeck <qemu_oss@crudebyte.com>
> 
> FYI your domain is also quarantined by Google:
> ARC-Authentication-Results: i=1; mx.google.com;
>         dkim=fail header.i=@crudebyte.com header.s=lizzy header.b=olij9WvS;
>         spf=softfail (google.com: domain of transitioning
> qemu_oss@crudebyte.com does not designate 172.105.152.211 as permitted
> sender) smtp.mailfrom=qemu_oss@crudebyte.com;
>         dmarc=fail (p=QUARANTINE sp=QUARANTINE dis=QUARANTINE)

Reverse lookup of 172.105.152.211 sais it is atlanta189.amsat.org, which is 
not affiliated with crudebyte.com in any way, and it is therefore not allowed 
to send emails on behalf of this domain.

Markus had a huge CC list in this series, so my guess is that my email went 
through some ML which touched my original email's DKIM signed headers 
(probably prefixed the subject line) before sending it out to list members, 
eventually causing the message to be quarantined

-> i.e. a ML configuration issue, not a problem with this domain.

Best regards,
Christian Schoenebeck

> header.from=crudebyte.com
> Received-SPF: softfail (google.com: domain of transitioning
> qemu_oss@crudebyte.com does not designate 172.105.152.211 as permitted
> sender) client-ip=172.105.152.211;
> Authentication-Results: mx.google.com;
>         dkim=fail header.i=@crudebyte.com header.s=lizzy header.b=olij9WvS;
>         spf=softfail (google.com: domain of transitioning
> qemu_oss@crudebyte.com does not designate 172.105.152.211 as permitted
> sender) smtp.mailfrom=qemu_oss@crudebyte.com;
>         dmarc=fail (p=QUARANTINE sp=QUARANTINE dis=QUARANTINE)
> header.from=crudebyte.com
> X-Rspamd-Queue-Id: AC61617709E
> X-Spamd-Result: default: False [-2.01 / 7.00];
> BAYES_HAM(-3.00)[100.00%]; SUSPICIOUS_RECIPS(1.50)[];
> DMARC_POLICY_ALLOW(-0.50)[crudebyte.com,quarantine];
> MID_RHS_NOT_FQDN(0.50)[]; R_DKIM_ALLOW(-0.20)[crudebyte.com:s=lizzy];
> R_SPF_ALLOW(-0.20)[+ip4:91.194.90.13]; MIME_GOOD(-0.10)[text/plain];
> MX_GOOD(-0.01)[]; RCVD_COUNT_ZERO(0.00)[0]; ASN(0.00)[asn:51167,
> ipnet:91.194.90.0/23, country:DE]; MIME_TRACE(0.00)[0:+];
> FREEMAIL_CC(0.00)[redhat.com,linaro.org,gmail.com,vger.kernel.org,irrelevant
> .dk,adacore.com,anisinha.ca,netbsd.org,microsoft.com,kernel.org,lists.xenpro
> ject.org,users.sourceforge.jp,xen.org,huawei.com,reactos.org,amd.com,citrix.
> com,syrmia.com,ilande.co.uk,intel.com,kaod.org,nongnu.org,ispras.ru,gibson.d
> ropbear.id.au,habkost.net,virtuozzo.com,google.com,amsat.org,tribudubois.net
> ,mvista.com]; FROM_EQ_ENVFROM(0.00)[]; NEURAL_HAM(-0.00)[-0.923];
> ARC_NA(0.00)[]; DKIM_TRACE(0.00)[crudebyte.com:+]; FROM_HAS_DN(0.00)[];
> RCPT_COUNT_GT_50(0.00)[66]; TO_DN_SOME(0.00)[];
> TO_MATCH_ENVRCPT_SOME(0.00)[]; TAGGED_RCPT(0.00)[];
> RCVD_IN_DNSWL_FAIL(0.00)[91.194.90.13:server fail]
> X-Rspamd-Server: atlanta189

Re: [PATCH 2/3] 9pfs: Use g_new() & friends where that makes obvious sense

[Alex Bennée]

Markus Armbruster <armbru@redhat.com> writes:

> g_new(T, n) is neater than g_malloc(sizeof(T) * n).  It's also safer,
> for two reasons.  One, it catches multiplication overflowing size_t.
> Two, it returns T * rather than void *, which lets the compiler catch
> more type errors.
>
> This commit only touches allocations with size arguments of the form
> sizeof(T).
>
> Patch created mechanically with:
>
>     $ spatch --in-place --sp-file scripts/coccinelle/use-g_new-etc.cocci \
> 	     --macro-file scripts/cocci-macro-file.h FILES...
>
> Except this uncovers a typing error:
>
>     ../hw/9pfs/9p.c:855:13: warning: incompatible pointer types assigning to 'QpfEntry *' from 'QppEntry *' [-Wincompatible-pointer-types]
> 	    val = g_new0(QppEntry, 1);
> 		^ ~~~~~~~~~~~~~~~~~~~
>     1 warning generated.
>
> Harmless, because QppEntry is larger than QpfEntry.  Fix to allocate a
> QpfEntry instead.
>
> Cc: Greg Kurz <groug@kaod.org>
> Cc: Christian Schoenebeck <qemu_oss@crudebyte.com>
> Signed-off-by: Markus Armbruster <armbru@redhat.com>

Reviewed-by: Alex Bennée <alex.bennee@linaro.org>

-- 
Alex Bennée

Re: [PATCH 2/3] 9pfs: Use g_new() & friends where that makes obvious sense

[Greg Kurz]

On Mon, 14 Mar 2022 17:01:07 +0100
Markus Armbruster <armbru@redhat.com> wrote:

> g_new(T, n) is neater than g_malloc(sizeof(T) * n).  It's also safer,
> for two reasons.  One, it catches multiplication overflowing size_t.
> Two, it returns T * rather than void *, which lets the compiler catch
> more type errors.
> 
> This commit only touches allocations with size arguments of the form
> sizeof(T).
> 
> Patch created mechanically with:
> 
>     $ spatch --in-place --sp-file scripts/coccinelle/use-g_new-etc.cocci \
> 	     --macro-file scripts/cocci-macro-file.h FILES...
> 
> Except this uncovers a typing error:
> 
>     ../hw/9pfs/9p.c:855:13: warning: incompatible pointer types assigning to 'QpfEntry *' from 'QppEntry *' [-Wincompatible-pointer-types]
> 	    val = g_new0(QppEntry, 1);
> 		^ ~~~~~~~~~~~~~~~~~~~
>     1 warning generated.
> 
> Harmless, because QppEntry is larger than QpfEntry.  Fix to allocate a
> QpfEntry instead.
> 
> Cc: Greg Kurz <groug@kaod.org>
> Cc: Christian Schoenebeck <qemu_oss@crudebyte.com>
> Signed-off-by: Markus Armbruster <armbru@redhat.com>
> ---

Reviewed-by: Greg Kurz <groug@kaod.org>

>  hw/9pfs/9p-proxy.c           | 2 +-
>  hw/9pfs/9p-synth.c           | 4 ++--
>  hw/9pfs/9p.c                 | 8 ++++----
>  hw/9pfs/codir.c              | 6 +++---
>  tests/qtest/virtio-9p-test.c | 4 ++--
>  5 files changed, 12 insertions(+), 12 deletions(-)
> 
> diff --git a/hw/9pfs/9p-proxy.c b/hw/9pfs/9p-proxy.c
> index 8b4b5cf7dc..4c5e0fc217 100644
> --- a/hw/9pfs/9p-proxy.c
> +++ b/hw/9pfs/9p-proxy.c
> @@ -1187,7 +1187,7 @@ static int proxy_parse_opts(QemuOpts *opts, FsDriverEntry *fs, Error **errp)
>  
>  static int proxy_init(FsContext *ctx, Error **errp)
>  {
> -    V9fsProxy *proxy = g_malloc(sizeof(V9fsProxy));
> +    V9fsProxy *proxy = g_new(V9fsProxy, 1);
>      int sock_id;
>  
>      if (ctx->export_flags & V9FS_PROXY_SOCK_NAME) {
> diff --git a/hw/9pfs/9p-synth.c b/hw/9pfs/9p-synth.c
> index b3080e415b..d99d263985 100644
> --- a/hw/9pfs/9p-synth.c
> +++ b/hw/9pfs/9p-synth.c
> @@ -49,7 +49,7 @@ static V9fsSynthNode *v9fs_add_dir_node(V9fsSynthNode *parent, int mode,
>  
>      /* Add directory type and remove write bits */
>      mode = ((mode & 0777) | S_IFDIR) & ~(S_IWUSR | S_IWGRP | S_IWOTH);
> -    node = g_malloc0(sizeof(V9fsSynthNode));
> +    node = g_new0(V9fsSynthNode, 1);
>      if (attr) {
>          /* We are adding .. or . entries */
>          node->attr = attr;
> @@ -128,7 +128,7 @@ int qemu_v9fs_synth_add_file(V9fsSynthNode *parent, int mode,
>      }
>      /* Add file type and remove write bits */
>      mode = ((mode & 0777) | S_IFREG);
> -    node = g_malloc0(sizeof(V9fsSynthNode));
> +    node = g_new0(V9fsSynthNode, 1);
>      node->attr         = &node->actual_attr;
>      node->attr->inode  = synth_node_count++;
>      node->attr->nlink  = 1;
> diff --git a/hw/9pfs/9p.c b/hw/9pfs/9p.c
> index a6d6b3f835..8e9d4aea73 100644
> --- a/hw/9pfs/9p.c
> +++ b/hw/9pfs/9p.c
> @@ -324,7 +324,7 @@ static V9fsFidState *alloc_fid(V9fsState *s, int32_t fid)
>              return NULL;
>          }
>      }
> -    f = g_malloc0(sizeof(V9fsFidState));
> +    f = g_new0(V9fsFidState, 1);
>      f->fid = fid;
>      f->fid_type = P9_FID_NONE;
>      f->ref = 1;
> @@ -804,7 +804,7 @@ static int qid_inode_prefix_hash_bits(V9fsPDU *pdu, dev_t dev)
>  
>      val = qht_lookup(&pdu->s->qpd_table, &lookup, hash);
>      if (!val) {
> -        val = g_malloc0(sizeof(QpdEntry));
> +        val = g_new0(QpdEntry, 1);
>          *val = lookup;
>          affix = affixForIndex(pdu->s->qp_affix_next);
>          val->prefix_bits = affix.bits;
> @@ -852,7 +852,7 @@ static int qid_path_fullmap(V9fsPDU *pdu, const struct stat *stbuf,
>              return -ENFILE;
>          }
>  
> -        val = g_malloc0(sizeof(QppEntry));
> +        val = g_new0(QpfEntry, 1);
>          *val = lookup;
>  
>          /* new unique inode and device combo */
> @@ -928,7 +928,7 @@ static int qid_path_suffixmap(V9fsPDU *pdu, const struct stat *stbuf,
>              return -ENFILE;
>          }
>  
> -        val = g_malloc0(sizeof(QppEntry));
> +        val = g_new0(QppEntry, 1);
>          *val = lookup;
>  
>          /* new unique inode affix and device combo */
> diff --git a/hw/9pfs/codir.c b/hw/9pfs/codir.c
> index 75148bc985..93ba44fb75 100644
> --- a/hw/9pfs/codir.c
> +++ b/hw/9pfs/codir.c
> @@ -141,9 +141,9 @@ static int do_readdir_many(V9fsPDU *pdu, V9fsFidState *fidp,
>  
>          /* append next node to result chain */
>          if (!e) {
> -            *entries = e = g_malloc0(sizeof(V9fsDirEnt));
> +            *entries = e = g_new0(V9fsDirEnt, 1);
>          } else {
> -            e = e->next = g_malloc0(sizeof(V9fsDirEnt));
> +            e = e->next = g_new0(V9fsDirEnt, 1);
>          }
>          e->dent = qemu_dirent_dup(dent);
>  
> @@ -163,7 +163,7 @@ static int do_readdir_many(V9fsPDU *pdu, V9fsFidState *fidp,
>                  break;
>              }
>  
> -            e->st = g_malloc0(sizeof(struct stat));
> +            e->st = g_new0(struct stat, 1);
>              memcpy(e->st, &stbuf, sizeof(struct stat));
>          }
>  
> diff --git a/tests/qtest/virtio-9p-test.c b/tests/qtest/virtio-9p-test.c
> index 01ca076afe..e28c71bd8f 100644
> --- a/tests/qtest/virtio-9p-test.c
> +++ b/tests/qtest/virtio-9p-test.c
> @@ -468,12 +468,12 @@ static void v9fs_rreaddir(P9Req *req, uint32_t *count, uint32_t *nentries,
>           togo -= 13 + 8 + 1 + 2 + slen, ++n)
>      {
>          if (!e) {
> -            e = g_malloc(sizeof(struct V9fsDirent));
> +            e = g_new(struct V9fsDirent, 1);
>              if (entries) {
>                  *entries = e;
>              }
>          } else {
> -            e = e->next = g_malloc(sizeof(struct V9fsDirent));
> +            e = e->next = g_new(struct V9fsDirent, 1);
>          }
>          e->next = NULL;
>          /* qid[13] offset[8] type[1] name[s] */

[PATCH 3/3] Use g_new() & friends where that makes obvious sense

[Markus Armbruster]

g_new(T, n) is neater than g_malloc(sizeof(T) * n).  It's also safer,
for two reasons.  One, it catches multiplication overflowing size_t.
Two, it returns T * rather than void *, which lets the compiler catch
more type errors.

This commit only touches allocations with size arguments of the form
sizeof(T).

Patch created mechanically with:

    $ spatch --in-place --sp-file scripts/coccinelle/use-g_new-etc.cocci \
	     --macro-file scripts/cocci-macro-file.h FILES...

Signed-off-by: Markus Armbruster <armbru@redhat.com>
---
 include/qemu/timer.h                     |  2 +-
 accel/kvm/kvm-all.c                      |  6 ++--
 accel/tcg/tcg-accel-ops-mttcg.c          |  2 +-
 accel/tcg/tcg-accel-ops-rr.c             |  4 +--
 audio/audio.c                            |  4 +--
 audio/audio_legacy.c                     |  6 ++--
 audio/dsoundaudio.c                      |  2 +-
 audio/jackaudio.c                        |  6 ++--
 audio/paaudio.c                          |  4 +--
 backends/cryptodev.c                     |  2 +-
 contrib/vhost-user-gpu/vhost-user-gpu.c  |  2 +-
 cpus-common.c                            |  4 +--
 dump/dump.c                              |  2 +-
 hw/acpi/hmat.c                           |  2 +-
 hw/audio/intel-hda.c                     |  2 +-
 hw/char/parallel.c                       |  2 +-
 hw/char/riscv_htif.c                     |  2 +-
 hw/char/virtio-serial-bus.c              |  6 ++--
 hw/core/irq.c                            |  2 +-
 hw/core/reset.c                          |  2 +-
 hw/display/pxa2xx_lcd.c                  |  2 +-
 hw/display/tc6393xb.c                    |  2 +-
 hw/display/virtio-gpu.c                  |  4 +--
 hw/display/xenfb.c                       |  4 +--
 hw/dma/rc4030.c                          |  4 +--
 hw/i2c/core.c                            |  4 +--
 hw/i2c/i2c_mux_pca954x.c                 |  2 +-
 hw/i386/amd_iommu.c                      |  4 +--
 hw/i386/intel_iommu.c                    |  2 +-
 hw/i386/xen/xen-hvm.c                    | 10 +++---
 hw/i386/xen/xen-mapcache.c               | 14 ++++----
 hw/input/lasips2.c                       |  2 +-
 hw/input/pckbd.c                         |  2 +-
 hw/input/ps2.c                           |  4 +--
 hw/input/pxa2xx_keypad.c                 |  2 +-
 hw/input/tsc2005.c                       |  3 +-
 hw/intc/riscv_aclint.c                   |  6 ++--
 hw/intc/xics.c                           |  2 +-
 hw/m68k/virt.c                           |  2 +-
 hw/mips/mipssim.c                        |  2 +-
 hw/misc/applesmc.c                       |  2 +-
 hw/misc/imx6_src.c                       |  2 +-
 hw/misc/ivshmem.c                        |  4 +--
 hw/net/virtio-net.c                      |  4 +--
 hw/nvme/ns.c                             |  2 +-
 hw/pci-host/pnv_phb3.c                   |  2 +-
 hw/pci-host/pnv_phb4.c                   |  2 +-
 hw/pci/pcie_sriov.c                      |  2 +-
 hw/ppc/e500.c                            |  2 +-
 hw/ppc/ppc.c                             |  8 ++---
 hw/ppc/ppc405_boards.c                   |  4 +--
 hw/ppc/ppc405_uc.c                       | 18 +++++-----
 hw/ppc/ppc4xx_devs.c                     |  2 +-
 hw/ppc/ppc_booke.c                       |  4 +--
 hw/ppc/spapr.c                           |  2 +-
 hw/ppc/spapr_events.c                    |  2 +-
 hw/ppc/spapr_hcall.c                     |  2 +-
 hw/ppc/spapr_numa.c                      |  3 +-
 hw/rdma/vmw/pvrdma_dev_ring.c            |  2 +-
 hw/rdma/vmw/pvrdma_qp_ops.c              |  6 ++--
 hw/sh4/r2d.c                             |  4 +--
 hw/sh4/sh7750.c                          |  2 +-
 hw/sparc/leon3.c                         |  2 +-
 hw/sparc64/sparc64.c                     |  4 +--
 hw/timer/arm_timer.c                     |  2 +-
 hw/timer/slavio_timer.c                  |  2 +-
 hw/vfio/pci.c                            |  4 +--
 hw/vfio/platform.c                       |  4 +--
 hw/virtio/virtio-crypto.c                |  2 +-
 hw/virtio/virtio-iommu.c                 |  2 +-
 hw/virtio/virtio.c                       |  5 ++-
 hw/xtensa/xtfpga.c                       |  2 +-
 linux-user/syscall.c                     |  2 +-
 migration/dirtyrate.c                    |  4 +--
 migration/multifd-zlib.c                 |  4 +--
 migration/ram.c                          |  2 +-
 monitor/misc.c                           |  2 +-
 monitor/qmp-cmds.c                       |  2 +-
 qga/commands-win32.c                     |  8 ++---
 qga/commands.c                           |  2 +-
 qom/qom-qmp-cmds.c                       |  2 +-
 replay/replay-char.c                     |  4 +--
 replay/replay-events.c                   | 10 +++---
 scripts/coverity-scan/model.c            |  2 +-
 semihosting/config.c                     |  2 +-
 softmmu/bootdevice.c                     |  4 +--
 softmmu/dma-helpers.c                    |  4 +--
 softmmu/memory_mapping.c                 |  2 +-
 target/i386/cpu-sysemu.c                 |  2 +-
 target/i386/hax/hax-accel-ops.c          |  4 +--
 target/i386/nvmm/nvmm-accel-ops.c        |  4 +--
 target/i386/whpx/whpx-accel-ops.c        |  4 +--
 target/i386/whpx/whpx-all.c              |  2 +-
 target/s390x/cpu-sysemu.c                |  2 +-
 tests/unit/test-hbitmap.c                |  2 +-
 tests/unit/test-qmp-cmds.c               | 14 ++++----
 tests/unit/test-qobject-output-visitor.c |  2 +-
 tests/unit/test-vmstate.c                | 42 ++++++++++++------------
 ui/vnc-enc-tight.c                       |  2 +-
 util/envlist.c                           |  2 +-
 util/hbitmap.c                           |  2 +-
 util/main-loop.c                         |  2 +-
 util/qemu-timer.c                        |  2 +-
 util/vfio-helpers.c                      |  4 +--
 104 files changed, 197 insertions(+), 202 deletions(-)

diff --git a/include/qemu/timer.h b/include/qemu/timer.h
index 88ef114689..ee071e07d1 100644
--- a/include/qemu/timer.h
+++ b/include/qemu/timer.h
@@ -520,7 +520,7 @@ static inline QEMUTimer *timer_new_full(QEMUTimerListGroup *timer_list_group,
                                         int scale, int attributes,
                                         QEMUTimerCB *cb, void *opaque)
 {
-    QEMUTimer *ts = g_malloc0(sizeof(QEMUTimer));
+    QEMUTimer *ts = g_new0(QEMUTimer, 1);
     timer_init_full(ts, timer_list_group, type, scale, attributes, cb, opaque);
     return ts;
 }
diff --git a/accel/kvm/kvm-all.c b/accel/kvm/kvm-all.c
index 0e66ebb497..1510856a3b 100644
--- a/accel/kvm/kvm-all.c
+++ b/accel/kvm/kvm-all.c
@@ -1646,7 +1646,7 @@ void kvm_memory_listener_register(KVMState *s, KVMMemoryListener *kml,
 {
     int i;
 
-    kml->slots = g_malloc0(s->nr_slots * sizeof(KVMSlot));
+    kml->slots = g_new0(KVMSlot, s->nr_slots);
     kml->as_id = as_id;
 
     for (i = 0; i < s->nr_slots; i++) {
@@ -1941,7 +1941,7 @@ int kvm_irqchip_send_msi(KVMState *s, MSIMessage msg)
             return virq;
         }
 
-        route = g_malloc0(sizeof(KVMMSIRoute));
+        route = g_new0(KVMMSIRoute, 1);
         route->kroute.gsi = virq;
         route->kroute.type = KVM_IRQ_ROUTING_MSI;
         route->kroute.flags = 0;
@@ -3243,7 +3243,7 @@ int kvm_insert_breakpoint(CPUState *cpu, target_ulong addr,
             return 0;
         }
 
-        bp = g_malloc(sizeof(struct kvm_sw_breakpoint));
+        bp = g_new(struct kvm_sw_breakpoint, 1);
         bp->pc = addr;
         bp->use_count = 1;
         err = kvm_arch_insert_sw_breakpoint(cpu, bp);
diff --git a/accel/tcg/tcg-accel-ops-mttcg.c b/accel/tcg/tcg-accel-ops-mttcg.c
index dc421c8fd7..ea2b741deb 100644
--- a/accel/tcg/tcg-accel-ops-mttcg.c
+++ b/accel/tcg/tcg-accel-ops-mttcg.c
@@ -143,7 +143,7 @@ void mttcg_start_vcpu_thread(CPUState *cpu)
     g_assert(tcg_enabled());
     tcg_cpu_init_cflags(cpu, current_machine->smp.max_cpus > 1);
 
-    cpu->thread = g_malloc0(sizeof(QemuThread));
+    cpu->thread = g_new0(QemuThread, 1);
     cpu->halt_cond = g_malloc0(sizeof(QemuCond));
     qemu_cond_init(cpu->halt_cond);
 
diff --git a/accel/tcg/tcg-accel-ops-rr.c b/accel/tcg/tcg-accel-ops-rr.c
index a805fb6bdd..b287110766 100644
--- a/accel/tcg/tcg-accel-ops-rr.c
+++ b/accel/tcg/tcg-accel-ops-rr.c
@@ -280,8 +280,8 @@ void rr_start_vcpu_thread(CPUState *cpu)
     tcg_cpu_init_cflags(cpu, false);
 
     if (!single_tcg_cpu_thread) {
-        cpu->thread = g_malloc0(sizeof(QemuThread));
-        cpu->halt_cond = g_malloc0(sizeof(QemuCond));
+        cpu->thread = g_new0(QemuThread, 1);
+        cpu->halt_cond = g_new0(QemuCond, 1);
         qemu_cond_init(cpu->halt_cond);
 
         /* share a single thread for all cpus with TCG */
diff --git a/audio/audio.c b/audio/audio.c
index a88572e713..4c20a4bf58 100644
--- a/audio/audio.c
+++ b/audio/audio.c
@@ -1734,7 +1734,7 @@ static AudioState *audio_init(Audiodev *dev, const char *name)
         audio_validate_opts(dev, &error_abort);
     }
 
-    s = g_malloc0(sizeof(AudioState));
+    s = g_new0(AudioState, 1);
     s->dev = dev;
 
     QLIST_INIT (&s->hw_head_out);
@@ -2109,7 +2109,7 @@ void audio_parse_option(const char *opt)
 
     audio_validate_opts(dev, &error_fatal);
 
-    e = g_malloc0(sizeof(AudiodevListEntry));
+    e = g_new0(AudiodevListEntry, 1);
     e->dev = dev;
     QSIMPLEQ_INSERT_TAIL(&audiodevs, e, next);
 }
diff --git a/audio/audio_legacy.c b/audio/audio_legacy.c
index 0fe827b057..595949f52c 100644
--- a/audio/audio_legacy.c
+++ b/audio/audio_legacy.c
@@ -328,8 +328,8 @@ static void handle_per_direction(
 
 static AudiodevListEntry *legacy_opt(const char *drvname)
 {
-    AudiodevListEntry *e = g_malloc0(sizeof(AudiodevListEntry));
-    e->dev = g_malloc0(sizeof(Audiodev));
+    AudiodevListEntry *e = g_new0(AudiodevListEntry, 1);
+    e->dev = g_new0(Audiodev, 1);
     e->dev->id = g_strdup(drvname);
     e->dev->driver = qapi_enum_parse(
         &AudiodevDriver_lookup, drvname, -1, &error_abort);
@@ -508,7 +508,7 @@ static void lv_free(Visitor *v)
 
 static Visitor *legacy_visitor_new(void)
 {
-    LegacyPrintVisitor *lv = g_malloc0(sizeof(LegacyPrintVisitor));
+    LegacyPrintVisitor *lv = g_new0(LegacyPrintVisitor, 1);
 
     lv->visitor.start_struct = lv_start_struct;
     lv->visitor.end_struct = lv_end_struct;
diff --git a/audio/dsoundaudio.c b/audio/dsoundaudio.c
index 231f3e65b3..2b41db217e 100644
--- a/audio/dsoundaudio.c
+++ b/audio/dsoundaudio.c
@@ -623,7 +623,7 @@ static void *dsound_audio_init(Audiodev *dev)
 {
     int err;
     HRESULT hr;
-    dsound *s = g_malloc0(sizeof(dsound));
+    dsound *s = g_new0(dsound, 1);
     AudiodevDsoundOptions *dso;
 
     assert(dev->driver == AUDIODEV_DRIVER_DSOUND);
diff --git a/audio/jackaudio.c b/audio/jackaudio.c
index bf757250b5..5bdf3d7a78 100644
--- a/audio/jackaudio.c
+++ b/audio/jackaudio.c
@@ -97,9 +97,9 @@ static void qjack_buffer_create(QJackBuffer *buffer, int channels, int frames)
     buffer->used     = 0;
     buffer->rptr     = 0;
     buffer->wptr     = 0;
-    buffer->data     = g_malloc(channels * sizeof(float *));
+    buffer->data     = g_new(float *, channels);
     for (int i = 0; i < channels; ++i) {
-        buffer->data[i] = g_malloc(frames * sizeof(float));
+        buffer->data[i] = g_new(float, frames);
     }
 }
 
@@ -453,7 +453,7 @@ static int qjack_client_init(QJackClient *c)
     jack_on_shutdown(c->client, qjack_shutdown, c);
 
     /* allocate and register the ports */
-    c->port = g_malloc(sizeof(jack_port_t *) * c->nchannels);
+    c->port = g_new(jack_port_t *, c->nchannels);
     for (int i = 0; i < c->nchannels; ++i) {
 
         char port_name[16];
diff --git a/audio/paaudio.c b/audio/paaudio.c
index a53ed85e0b..ed4f4376c4 100644
--- a/audio/paaudio.c
+++ b/audio/paaudio.c
@@ -760,7 +760,7 @@ static int qpa_validate_per_direction_opts(Audiodev *dev,
 /* common */
 static void *qpa_conn_init(const char *server)
 {
-    PAConnection *c = g_malloc0(sizeof(PAConnection));
+    PAConnection *c = g_new0(PAConnection, 1);
     QTAILQ_INSERT_TAIL(&pa_conns, c, list);
 
     c->mainloop = pa_threaded_mainloop_new();
@@ -849,7 +849,7 @@ static void *qpa_audio_init(Audiodev *dev)
         return NULL;
     }
 
-    g = g_malloc0(sizeof(paaudio));
+    g = g_new0(paaudio, 1);
     server = popts->has_server ? popts->server : NULL;
 
     g->dev = dev;
diff --git a/backends/cryptodev.c b/backends/cryptodev.c
index bf52476166..2b105e433c 100644
--- a/backends/cryptodev.c
+++ b/backends/cryptodev.c
@@ -39,7 +39,7 @@ cryptodev_backend_new_client(const char *model,
 {
     CryptoDevBackendClient *cc;
 
-    cc = g_malloc0(sizeof(CryptoDevBackendClient));
+    cc = g_new0(CryptoDevBackendClient, 1);
     cc->model = g_strdup(model);
     if (name) {
         cc->name = g_strdup(name);
diff --git a/contrib/vhost-user-gpu/vhost-user-gpu.c b/contrib/vhost-user-gpu/vhost-user-gpu.c
index 611360e6b4..bfb8d93cf8 100644
--- a/contrib/vhost-user-gpu/vhost-user-gpu.c
+++ b/contrib/vhost-user-gpu/vhost-user-gpu.c
@@ -455,7 +455,7 @@ vg_create_mapping_iov(VuGpu *g,
         return -1;
     }
 
-    *iov = g_malloc0(sizeof(struct iovec) * ab->nr_entries);
+    *iov = g_new0(struct iovec, ab->nr_entries);
     for (i = 0; i < ab->nr_entries; i++) {
         uint64_t len = ents[i].length;
         (*iov)[i].iov_len = ents[i].length;
diff --git a/cpus-common.c b/cpus-common.c
index 6e73d3e58d..db459b41ce 100644
--- a/cpus-common.c
+++ b/cpus-common.c
@@ -160,7 +160,7 @@ void async_run_on_cpu(CPUState *cpu, run_on_cpu_func func, run_on_cpu_data data)
 {
     struct qemu_work_item *wi;
 
-    wi = g_malloc0(sizeof(struct qemu_work_item));
+    wi = g_new0(struct qemu_work_item, 1);
     wi->func = func;
     wi->data = data;
     wi->free = true;
@@ -305,7 +305,7 @@ void async_safe_run_on_cpu(CPUState *cpu, run_on_cpu_func func,
 {
     struct qemu_work_item *wi;
 
-    wi = g_malloc0(sizeof(struct qemu_work_item));
+    wi = g_new0(struct qemu_work_item, 1);
     wi->func = func;
     wi->data = data;
     wi->free = true;
diff --git a/dump/dump.c b/dump/dump.c
index a84d8b1598..f57ed76fa7 100644
--- a/dump/dump.c
+++ b/dump/dump.c
@@ -2041,7 +2041,7 @@ void qmp_dump_guest_memory(bool paging, const char *file,
 DumpGuestMemoryCapability *qmp_query_dump_guest_memory_capability(Error **errp)
 {
     DumpGuestMemoryCapability *cap =
-                                  g_malloc0(sizeof(DumpGuestMemoryCapability));
+                                  g_new0(DumpGuestMemoryCapability, 1);
     DumpGuestMemoryFormatList **tail = &cap->formats;
 
     /* elf is always available */
diff --git a/hw/acpi/hmat.c b/hw/acpi/hmat.c
index 6913ebf730..3a6d51282a 100644
--- a/hw/acpi/hmat.c
+++ b/hw/acpi/hmat.c
@@ -128,7 +128,7 @@ static void build_hmat_lb(GArray *table_data, HMAT_LB_Info *hmat_lb,
     }
 
     /* Latency or Bandwidth Entries */
-    entry_list = g_malloc0(num_initiator * num_target * sizeof(uint16_t));
+    entry_list = g_new0(uint16_t, num_initiator * num_target);
     for (i = 0; i < hmat_lb->list->len; i++) {
         lb_data = &g_array_index(hmat_lb->list, HMAT_LB_Data, i);
         index = lb_data->initiator * num_target + lb_data->target;
diff --git a/hw/audio/intel-hda.c b/hw/audio/intel-hda.c
index 5f8a878f20..686fb94d5c 100644
--- a/hw/audio/intel-hda.c
+++ b/hw/audio/intel-hda.c
@@ -473,7 +473,7 @@ static void intel_hda_parse_bdl(IntelHDAState *d, IntelHDAStream *st)
     addr = intel_hda_addr(st->bdlp_lbase, st->bdlp_ubase);
     st->bentries = st->lvi +1;
     g_free(st->bpl);
-    st->bpl = g_malloc(sizeof(bpl) * st->bentries);
+    st->bpl = g_new(bpl, st->bentries);
     for (i = 0; i < st->bentries; i++, addr += 16) {
         pci_dma_read(&d->pci, addr, buf, 16);
         st->bpl[i].addr  = le64_to_cpu(*(uint64_t *)buf);
diff --git a/hw/char/parallel.c b/hw/char/parallel.c
index adb9bd9be3..f735a6cd7f 100644
--- a/hw/char/parallel.c
+++ b/hw/char/parallel.c
@@ -622,7 +622,7 @@ bool parallel_mm_init(MemoryRegion *address_space,
 {
     ParallelState *s;
 
-    s = g_malloc0(sizeof(ParallelState));
+    s = g_new0(ParallelState, 1);
     s->irq = irq;
     qemu_chr_fe_init(&s->chr, chr, &error_abort);
     s->it_shift = it_shift;
diff --git a/hw/char/riscv_htif.c b/hw/char/riscv_htif.c
index 729edbf968..6577f0e640 100644
--- a/hw/char/riscv_htif.c
+++ b/hw/char/riscv_htif.c
@@ -248,7 +248,7 @@ HTIFState *htif_mm_init(MemoryRegion *address_space, MemoryRegion *main_mem,
     tohost_offset = tohost_addr - base;
     fromhost_offset = fromhost_addr - base;
 
-    HTIFState *s = g_malloc0(sizeof(HTIFState));
+    HTIFState *s = g_new0(HTIFState, 1);
     s->address_space = address_space;
     s->main_mem = main_mem;
     s->main_mem_ram_ptr = memory_region_get_ram_ptr(main_mem);
diff --git a/hw/char/virtio-serial-bus.c b/hw/char/virtio-serial-bus.c
index f01ec2137c..6048d408b8 100644
--- a/hw/char/virtio-serial-bus.c
+++ b/hw/char/virtio-serial-bus.c
@@ -1055,10 +1055,8 @@ static void virtio_serial_device_realize(DeviceState *dev, Error **errp)
     QTAILQ_INIT(&vser->ports);
 
     vser->bus.max_nr_ports = vser->serial.max_virtserial_ports;
-    vser->ivqs = g_malloc(vser->serial.max_virtserial_ports
-                          * sizeof(VirtQueue *));
-    vser->ovqs = g_malloc(vser->serial.max_virtserial_ports
-                          * sizeof(VirtQueue *));
+    vser->ivqs = g_new(VirtQueue *, vser->serial.max_virtserial_ports);
+    vser->ovqs = g_new(VirtQueue *, vser->serial.max_virtserial_ports);
 
     /* Add a queue for host to guest transfers for port 0 (backward compat) */
     vser->ivqs[0] = virtio_add_queue(vdev, 128, handle_input);
diff --git a/hw/core/irq.c b/hw/core/irq.c
index 8a9cbdd556..741219277b 100644
--- a/hw/core/irq.c
+++ b/hw/core/irq.c
@@ -115,7 +115,7 @@ static void qemu_splitirq(void *opaque, int line, int level)
 
 qemu_irq qemu_irq_split(qemu_irq irq1, qemu_irq irq2)
 {
-    qemu_irq *s = g_malloc0(2 * sizeof(qemu_irq));
+    qemu_irq *s = g_new0(qemu_irq, 2);
     s[0] = irq1;
     s[1] = irq2;
     return qemu_allocate_irq(qemu_splitirq, s, 0);
diff --git a/hw/core/reset.c b/hw/core/reset.c
index 9c477f2bf5..36be82c491 100644
--- a/hw/core/reset.c
+++ b/hw/core/reset.c
@@ -40,7 +40,7 @@ static QTAILQ_HEAD(, QEMUResetEntry) reset_handlers =
 
 void qemu_register_reset(QEMUResetHandler *func, void *opaque)
 {
-    QEMUResetEntry *re = g_malloc0(sizeof(QEMUResetEntry));
+    QEMUResetEntry *re = g_new0(QEMUResetEntry, 1);
 
     re->func = func;
     re->opaque = opaque;
diff --git a/hw/display/pxa2xx_lcd.c b/hw/display/pxa2xx_lcd.c
index 2887ce496b..0f06ed6e9f 100644
--- a/hw/display/pxa2xx_lcd.c
+++ b/hw/display/pxa2xx_lcd.c
@@ -1427,7 +1427,7 @@ PXA2xxLCDState *pxa2xx_lcdc_init(MemoryRegion *sysmem,
 {
     PXA2xxLCDState *s;
 
-    s = (PXA2xxLCDState *) g_malloc0(sizeof(PXA2xxLCDState));
+    s = g_new0(PXA2xxLCDState, 1);
     s->invalidated = 1;
     s->irq = irq;
     s->sysmem = sysmem;
diff --git a/hw/display/tc6393xb.c b/hw/display/tc6393xb.c
index 1f28223c7b..c7beba453b 100644
--- a/hw/display/tc6393xb.c
+++ b/hw/display/tc6393xb.c
@@ -540,7 +540,7 @@ TC6393xbState *tc6393xb_init(MemoryRegion *sysmem, uint32_t base, qemu_irq irq)
         },
     };
 
-    s = (TC6393xbState *) g_malloc0(sizeof(TC6393xbState));
+    s = g_new0(TC6393xbState, 1);
     s->irq = irq;
     s->gpio_in = qemu_allocate_irqs(tc6393xb_gpio_set, s, TC6393XB_GPIOS);
 
diff --git a/hw/display/virtio-gpu.c b/hw/display/virtio-gpu.c
index c6dc818988..529b5246b2 100644
--- a/hw/display/virtio-gpu.c
+++ b/hw/display/virtio-gpu.c
@@ -831,9 +831,9 @@ int virtio_gpu_create_mapping_iov(VirtIOGPU *g,
             }
 
             if (!(v % 16)) {
-                *iov = g_realloc(*iov, sizeof(struct iovec) * (v + 16));
+                *iov = g_renew(struct iovec, *iov, v + 16);
                 if (addr) {
-                    *addr = g_realloc(*addr, sizeof(uint64_t) * (v + 16));
+                    *addr = g_renew(uint64_t, *addr, v + 16);
                 }
             }
             (*iov)[v].iov_base = map;
diff --git a/hw/display/xenfb.c b/hw/display/xenfb.c
index 838260b6ad..cea10fe3c7 100644
--- a/hw/display/xenfb.c
+++ b/hw/display/xenfb.c
@@ -496,8 +496,8 @@ static int xenfb_map_fb(struct XenFB *xenfb)
     n_fbdirs = xenfb->fbpages * mode / 8;
     n_fbdirs = DIV_ROUND_UP(n_fbdirs, XC_PAGE_SIZE);
 
-    pgmfns = g_malloc0(sizeof(xen_pfn_t) * n_fbdirs);
-    fbmfns = g_malloc0(sizeof(xen_pfn_t) * xenfb->fbpages);
+    pgmfns = g_new0(xen_pfn_t, n_fbdirs);
+    fbmfns = g_new0(xen_pfn_t, xenfb->fbpages);
 
     xenfb_copy_mfns(mode, n_fbdirs, pgmfns, pd);
     map = xenforeignmemory_map(xen_fmem, xenfb->c.xendev.dom,
diff --git a/hw/dma/rc4030.c b/hw/dma/rc4030.c
index e4d2f1725b..aa1d323a36 100644
--- a/hw/dma/rc4030.c
+++ b/hw/dma/rc4030.c
@@ -646,8 +646,8 @@ static rc4030_dma *rc4030_allocate_dmas(void *opaque, int n)
     struct rc4030DMAState *p;
     int i;
 
-    s = (rc4030_dma *)g_new0(rc4030_dma, n);
-    p = (struct rc4030DMAState *)g_new0(struct rc4030DMAState, n);
+    s = g_new0(rc4030_dma, n);
+    p = g_new0(struct rc4030DMAState, n);
     for (i = 0; i < n; i++) {
         p->opaque = opaque;
         p->n = i;
diff --git a/hw/i2c/core.c b/hw/i2c/core.c
index 0e7d2763b9..d0cb2d32fa 100644
--- a/hw/i2c/core.c
+++ b/hw/i2c/core.c
@@ -274,7 +274,7 @@ static int i2c_slave_post_load(void *opaque, int version_id)
     bus = I2C_BUS(qdev_get_parent_bus(DEVICE(dev)));
     if ((bus->saved_address == dev->address) ||
         (bus->saved_address == I2C_BROADCAST)) {
-        node = g_malloc(sizeof(struct I2CNode));
+        node = g_new(struct I2CNode, 1);
         node->elt = dev;
         QLIST_INSERT_HEAD(&bus->current_devs, node, next);
     }
@@ -319,7 +319,7 @@ static bool i2c_slave_match(I2CSlave *candidate, uint8_t address,
                             bool broadcast, I2CNodeList *current_devs)
 {
     if ((candidate->address == address) || (broadcast)) {
-        I2CNode *node = g_malloc(sizeof(struct I2CNode));
+        I2CNode *node = g_new(struct I2CNode, 1);
         node->elt = candidate;
         QLIST_INSERT_HEAD(current_devs, node, next);
         return true;
diff --git a/hw/i2c/i2c_mux_pca954x.c b/hw/i2c/i2c_mux_pca954x.c
index a9517b612a..3945de795c 100644
--- a/hw/i2c/i2c_mux_pca954x.c
+++ b/hw/i2c/i2c_mux_pca954x.c
@@ -71,7 +71,7 @@ static bool pca954x_match(I2CSlave *candidate, uint8_t address,
 
     /* They are talking to the mux itself (or all devices enabled). */
     if ((candidate->address == address) || broadcast) {
-        I2CNode *node = g_malloc(sizeof(struct I2CNode));
+        I2CNode *node = g_new(struct I2CNode, 1);
         node->elt = candidate;
         QLIST_INSERT_HEAD(current_devs, node, next);
         if (!broadcast) {
diff --git a/hw/i386/amd_iommu.c b/hw/i386/amd_iommu.c
index 4d13d8e697..9dd9b0ecf2 100644
--- a/hw/i386/amd_iommu.c
+++ b/hw/i386/amd_iommu.c
@@ -1405,7 +1405,7 @@ static AddressSpace *amdvi_host_dma_iommu(PCIBus *bus, void *opaque, int devfn)
 
     /* allocate memory during the first run */
     if (!iommu_as) {
-        iommu_as = g_malloc0(sizeof(AMDVIAddressSpace *) * PCI_DEVFN_MAX);
+        iommu_as = g_new0(AMDVIAddressSpace *, PCI_DEVFN_MAX);
         s->address_spaces[bus_num] = iommu_as;
     }
 
@@ -1413,7 +1413,7 @@ static AddressSpace *amdvi_host_dma_iommu(PCIBus *bus, void *opaque, int devfn)
     if (!iommu_as[devfn]) {
         snprintf(name, sizeof(name), "amd_iommu_devfn_%d", devfn);
 
-        iommu_as[devfn] = g_malloc0(sizeof(AMDVIAddressSpace));
+        iommu_as[devfn] = g_new0(AMDVIAddressSpace, 1);
         iommu_as[devfn]->bus_num = (uint8_t)bus_num;
         iommu_as[devfn]->devfn = (uint8_t)devfn;
         iommu_as[devfn]->iommu_state = s;
diff --git a/hw/i386/intel_iommu.c b/hw/i386/intel_iommu.c
index 32471a44cb..c64aa81a83 100644
--- a/hw/i386/intel_iommu.c
+++ b/hw/i386/intel_iommu.c
@@ -3416,7 +3416,7 @@ VTDAddressSpace *vtd_find_add_as(IntelIOMMUState *s, PCIBus *bus, int devfn)
     if (!vtd_dev_as) {
         snprintf(name, sizeof(name), "vtd-%02x.%x", PCI_SLOT(devfn),
                  PCI_FUNC(devfn));
-        vtd_bus->dev_as[devfn] = vtd_dev_as = g_malloc0(sizeof(VTDAddressSpace));
+        vtd_bus->dev_as[devfn] = vtd_dev_as = g_new0(VTDAddressSpace, 1);
 
         vtd_dev_as->bus = bus;
         vtd_dev_as->devfn = (uint8_t)devfn;
diff --git a/hw/i386/xen/xen-hvm.c b/hw/i386/xen/xen-hvm.c
index cf8e500514..0731f70410 100644
--- a/hw/i386/xen/xen-hvm.c
+++ b/hw/i386/xen/xen-hvm.c
@@ -396,7 +396,7 @@ go_physmap:
 
     mr_name = memory_region_name(mr);
 
-    physmap = g_malloc(sizeof(XenPhysmap));
+    physmap = g_new(XenPhysmap, 1);
 
     physmap->start_addr = start_addr;
     physmap->size = size;
@@ -1281,7 +1281,7 @@ static void xen_read_physmap(XenIOState *state)
         return;
 
     for (i = 0; i < num; i++) {
-        physmap = g_malloc(sizeof (XenPhysmap));
+        physmap = g_new(XenPhysmap, 1);
         physmap->phys_offset = strtoull(entries[i], NULL, 16);
         snprintf(path, sizeof(path),
                 "/local/domain/0/device-model/%d/physmap/%s/start_addr",
@@ -1410,7 +1410,7 @@ void xen_hvm_init_pc(PCMachineState *pcms, MemoryRegion **ram_memory)
     xen_pfn_t ioreq_pfn;
     XenIOState *state;
 
-    state = g_malloc0(sizeof (XenIOState));
+    state = g_new0(XenIOState, 1);
 
     state->xce_handle = xenevtchn_open(NULL, 0);
     if (state->xce_handle == NULL) {
@@ -1463,7 +1463,7 @@ void xen_hvm_init_pc(PCMachineState *pcms, MemoryRegion **ram_memory)
     }
 
     /* Note: cpus is empty at this point in init */
-    state->cpu_by_vcpu_id = g_malloc0(max_cpus * sizeof(CPUState *));
+    state->cpu_by_vcpu_id = g_new0(CPUState *, max_cpus);
 
     rc = xen_set_ioreq_server_state(xen_domid, state->ioservid, true);
     if (rc < 0) {
@@ -1472,7 +1472,7 @@ void xen_hvm_init_pc(PCMachineState *pcms, MemoryRegion **ram_memory)
         goto err;
     }
 
-    state->ioreq_local_port = g_malloc0(max_cpus * sizeof (evtchn_port_t));
+    state->ioreq_local_port = g_new0(evtchn_port_t, max_cpus);
 
     /* FIXME: how about if we overflow the page here? */
     for (i = 0; i < max_cpus; i++) {
diff --git a/hw/i386/xen/xen-mapcache.c b/hw/i386/xen/xen-mapcache.c
index f2ef977963..a2f93096e7 100644
--- a/hw/i386/xen/xen-mapcache.c
+++ b/hw/i386/xen/xen-mapcache.c
@@ -108,7 +108,7 @@ void xen_map_cache_init(phys_offset_to_gaddr_t f, void *opaque)
     unsigned long size;
     struct rlimit rlimit_as;
 
-    mapcache = g_malloc0(sizeof (MapCache));
+    mapcache = g_new0(MapCache, 1);
 
     mapcache->phys_offset_to_gaddr = f;
     mapcache->opaque = opaque;
@@ -164,8 +164,8 @@ static void xen_remap_bucket(MapCacheEntry *entry,
 
     trace_xen_remap_bucket(address_index);
 
-    pfns = g_malloc0(nb_pfn * sizeof (xen_pfn_t));
-    err = g_malloc0(nb_pfn * sizeof (int));
+    pfns = g_new0(xen_pfn_t, nb_pfn);
+    err = g_new0(int, nb_pfn);
 
     if (entry->vaddr_base != NULL) {
         if (!(entry->flags & XEN_MAPCACHE_ENTRY_DUMMY)) {
@@ -231,8 +231,8 @@ static void xen_remap_bucket(MapCacheEntry *entry,
     entry->vaddr_base = vaddr_base;
     entry->paddr_index = address_index;
     entry->size = size;
-    entry->valid_mapping = (unsigned long *) g_malloc0(sizeof(unsigned long) *
-            BITS_TO_LONGS(size >> XC_PAGE_SHIFT));
+    entry->valid_mapping = g_new0(unsigned long,
+                                  BITS_TO_LONGS(size >> XC_PAGE_SHIFT));
 
     if (dummy) {
         entry->flags |= XEN_MAPCACHE_ENTRY_DUMMY;
@@ -319,7 +319,7 @@ tryagain:
         pentry = free_pentry;
     }
     if (!entry) {
-        entry = g_malloc0(sizeof (MapCacheEntry));
+        entry = g_new0(MapCacheEntry, 1);
         pentry->next = entry;
         xen_remap_bucket(entry, NULL, cache_size, address_index, dummy);
     } else if (!entry->lock) {
@@ -353,7 +353,7 @@ tryagain:
 
     mapcache->last_entry = entry;
     if (lock) {
-        MapCacheRev *reventry = g_malloc0(sizeof(MapCacheRev));
+        MapCacheRev *reventry = g_new0(MapCacheRev, 1);
         entry->lock++;
         if (entry->lock == 0) {
             fprintf(stderr,
diff --git a/hw/input/lasips2.c b/hw/input/lasips2.c
index 68d741d342..94f18be4cd 100644
--- a/hw/input/lasips2.c
+++ b/hw/input/lasips2.c
@@ -266,7 +266,7 @@ void lasips2_init(MemoryRegion *address_space,
 {
     LASIPS2State *s;
 
-    s = g_malloc0(sizeof(LASIPS2State));
+    s = g_new0(LASIPS2State, 1);
 
     s->irq = irq;
     s->mouse.id = 1;
diff --git a/hw/input/pckbd.c b/hw/input/pckbd.c
index 1773db0d25..4efdf75620 100644
--- a/hw/input/pckbd.c
+++ b/hw/input/pckbd.c
@@ -649,7 +649,7 @@ void i8042_mm_init(qemu_irq kbd_irq, qemu_irq mouse_irq,
                    MemoryRegion *region, ram_addr_t size,
                    hwaddr mask)
 {
-    KBDState *s = g_malloc0(sizeof(KBDState));
+    KBDState *s = g_new0(KBDState, 1);
 
     s->irq_kbd = kbd_irq;
     s->irq_mouse = mouse_irq;
diff --git a/hw/input/ps2.c b/hw/input/ps2.c
index 6236711e1b..c16df1de7a 100644
--- a/hw/input/ps2.c
+++ b/hw/input/ps2.c
@@ -1226,7 +1226,7 @@ static QemuInputHandler ps2_keyboard_handler = {
 
 void *ps2_kbd_init(void (*update_irq)(void *, int), void *update_arg)
 {
-    PS2KbdState *s = (PS2KbdState *)g_malloc0(sizeof(PS2KbdState));
+    PS2KbdState *s = g_new0(PS2KbdState, 1);
 
     trace_ps2_kbd_init(s);
     s->common.update_irq = update_irq;
@@ -1248,7 +1248,7 @@ static QemuInputHandler ps2_mouse_handler = {
 
 void *ps2_mouse_init(void (*update_irq)(void *, int), void *update_arg)
 {
-    PS2MouseState *s = (PS2MouseState *)g_malloc0(sizeof(PS2MouseState));
+    PS2MouseState *s = g_new0(PS2MouseState, 1);
 
     trace_ps2_mouse_init(s);
     s->common.update_irq = update_irq;
diff --git a/hw/input/pxa2xx_keypad.c b/hw/input/pxa2xx_keypad.c
index 7f2f739fb3..3dd03e8c9f 100644
--- a/hw/input/pxa2xx_keypad.c
+++ b/hw/input/pxa2xx_keypad.c
@@ -306,7 +306,7 @@ PXA2xxKeyPadState *pxa27x_keypad_init(MemoryRegion *sysmem,
 {
     PXA2xxKeyPadState *s;
 
-    s = (PXA2xxKeyPadState *) g_malloc0(sizeof(PXA2xxKeyPadState));
+    s = g_new0(PXA2xxKeyPadState, 1);
     s->irq = irq;
 
     memory_region_init_io(&s->iomem, NULL, &pxa2xx_keypad_ops, s,
diff --git a/hw/input/tsc2005.c b/hw/input/tsc2005.c
index 55d61cc843..14698ce109 100644
--- a/hw/input/tsc2005.c
+++ b/hw/input/tsc2005.c
@@ -489,8 +489,7 @@ void *tsc2005_init(qemu_irq pintdav)
 {
     TSC2005State *s;
 
-    s = (TSC2005State *)
-            g_malloc0(sizeof(TSC2005State));
+    s = g_new0(TSC2005State, 1);
     s->x = 400;
     s->y = 240;
     s->pressure = false;
diff --git a/hw/intc/riscv_aclint.c b/hw/intc/riscv_aclint.c
index f1a5d3d284..e43b050e92 100644
--- a/hw/intc/riscv_aclint.c
+++ b/hw/intc/riscv_aclint.c
@@ -235,7 +235,7 @@ static void riscv_aclint_mtimer_realize(DeviceState *dev, Error **errp)
                           s, TYPE_RISCV_ACLINT_MTIMER, s->aperture_size);
     sysbus_init_mmio(SYS_BUS_DEVICE(dev), &s->mmio);
 
-    s->timer_irqs = g_malloc(sizeof(qemu_irq) * s->num_harts);
+    s->timer_irqs = g_new(qemu_irq, s->num_harts);
     qdev_init_gpio_out(dev, s->timer_irqs, s->num_harts);
 
     /* Claim timer interrupt bits */
@@ -292,7 +292,7 @@ DeviceState *riscv_aclint_mtimer_create(hwaddr addr, hwaddr size,
         RISCVCPU *rvcpu = RISCV_CPU(cpu);
         CPURISCVState *env = cpu ? cpu->env_ptr : NULL;
         riscv_aclint_mtimer_callback *cb =
-            g_malloc0(sizeof(riscv_aclint_mtimer_callback));
+            g_new0(riscv_aclint_mtimer_callback, 1);
 
         if (!env) {
             g_free(cb);
@@ -393,7 +393,7 @@ static void riscv_aclint_swi_realize(DeviceState *dev, Error **errp)
                           TYPE_RISCV_ACLINT_SWI, RISCV_ACLINT_SWI_SIZE);
     sysbus_init_mmio(SYS_BUS_DEVICE(dev), &swi->mmio);
 
-    swi->soft_irqs = g_malloc(sizeof(qemu_irq) * swi->num_harts);
+    swi->soft_irqs = g_new(qemu_irq, swi->num_harts);
     qdev_init_gpio_out(dev, swi->soft_irqs, swi->num_harts);
 
     /* Claim software interrupt bits */
diff --git a/hw/intc/xics.c b/hw/intc/xics.c
index 48a835eab7..24e67020db 100644
--- a/hw/intc/xics.c
+++ b/hw/intc/xics.c
@@ -604,7 +604,7 @@ static void ics_realize(DeviceState *dev, Error **errp)
         error_setg(errp, "Number of interrupts needs to be greater 0");
         return;
     }
-    ics->irqs = g_malloc0(ics->nr_irqs * sizeof(ICSIRQState));
+    ics->irqs = g_new0(ICSIRQState, ics->nr_irqs);
 
     qemu_register_reset(ics_reset_handler, ics);
 }
diff --git a/hw/m68k/virt.c b/hw/m68k/virt.c
index bbaf630bbf..8e630282e0 100644
--- a/hw/m68k/virt.c
+++ b/hw/m68k/virt.c
@@ -132,7 +132,7 @@ static void virt_init(MachineState *machine)
         exit(1);
     }
 
-    reset_info = g_malloc0(sizeof(ResetInfo));
+    reset_info = g_new0(ResetInfo, 1);
 
     /* init CPUs */
     cpu = M68K_CPU(cpu_create(machine->cpu_type));
diff --git a/hw/mips/mipssim.c b/hw/mips/mipssim.c
index 2325e7e05a..27a46bd538 100644
--- a/hw/mips/mipssim.c
+++ b/hw/mips/mipssim.c
@@ -162,7 +162,7 @@ mips_mipssim_init(MachineState *machine)
     cpu = mips_cpu_create_with_clock(machine->cpu_type, cpuclk);
     env = &cpu->env;
 
-    reset_info = g_malloc0(sizeof(ResetData));
+    reset_info = g_new0(ResetData, 1);
     reset_info->cpu = cpu;
     reset_info->vector = env->active_tc.PC;
     qemu_register_reset(main_cpu_reset, reset_info);
diff --git a/hw/misc/applesmc.c b/hw/misc/applesmc.c
index 1b9acaf1d3..81cd6b6423 100644
--- a/hw/misc/applesmc.c
+++ b/hw/misc/applesmc.c
@@ -253,7 +253,7 @@ static void applesmc_add_key(AppleSMCState *s, const char *key,
 {
     struct AppleSMCData *def;
 
-    def = g_malloc0(sizeof(struct AppleSMCData));
+    def = g_new0(struct AppleSMCData, 1);
     def->key = key;
     def->len = len;
     def->data = data;
diff --git a/hw/misc/imx6_src.c b/hw/misc/imx6_src.c
index 79f4375911..7b0e968804 100644
--- a/hw/misc/imx6_src.c
+++ b/hw/misc/imx6_src.c
@@ -151,7 +151,7 @@ static void imx6_defer_clear_reset_bit(int cpuid,
         return;
     }
 
-    ri = g_malloc(sizeof(struct SRCSCRResetInfo));
+    ri = g_new(struct SRCSCRResetInfo, 1);
     ri->s = s;
     ri->reset_bit = reset_shift;
 
diff --git a/hw/misc/ivshmem.c b/hw/misc/ivshmem.c
index 299837e5c1..b54778ada5 100644
--- a/hw/misc/ivshmem.c
+++ b/hw/misc/ivshmem.c
@@ -411,7 +411,7 @@ static void resize_peers(IVShmemState *s, int nb_peers)
     assert(nb_peers > old_nb_peers);
     IVSHMEM_DPRINTF("bumping storage to %d peers\n", nb_peers);
 
-    s->peers = g_realloc(s->peers, nb_peers * sizeof(Peer));
+    s->peers = g_renew(Peer, s->peers, nb_peers);
     s->nb_peers = nb_peers;
 
     for (i = old_nb_peers; i < nb_peers; i++) {
@@ -728,7 +728,7 @@ static void ivshmem_reset(DeviceState *d)
 static int ivshmem_setup_interrupts(IVShmemState *s, Error **errp)
 {
     /* allocate QEMU callback data for receiving interrupts */
-    s->msi_vectors = g_malloc0(s->vectors * sizeof(MSIVector));
+    s->msi_vectors = g_new0(MSIVector, s->vectors);
 
     if (ivshmem_has_feature(s, IVSHMEM_MSI)) {
         if (msix_init_exclusive_bar(PCI_DEVICE(s), s->vectors, 1, errp)) {
diff --git a/hw/net/virtio-net.c b/hw/net/virtio-net.c
index b02a0632df..bd121103f3 100644
--- a/hw/net/virtio-net.c
+++ b/hw/net/virtio-net.c
@@ -1994,7 +1994,7 @@ static void virtio_net_rsc_cache_buf(VirtioNetRscChain *chain,
     VirtioNetRscSeg *seg;
 
     hdr_len = chain->n->guest_hdr_len;
-    seg = g_malloc(sizeof(VirtioNetRscSeg));
+    seg = g_new(VirtioNetRscSeg, 1);
     seg->buf = g_malloc(hdr_len + sizeof(struct eth_header)
         + sizeof(struct ip6_header) + VIRTIO_NET_MAX_TCP_PAYLOAD);
     memcpy(seg->buf, buf, size);
@@ -3442,7 +3442,7 @@ static void virtio_net_device_realize(DeviceState *dev, Error **errp)
         virtio_cleanup(vdev);
         return;
     }
-    n->vqs = g_malloc0(sizeof(VirtIONetQueue) * n->max_queue_pairs);
+    n->vqs = g_new0(VirtIONetQueue, n->max_queue_pairs);
     n->curr_queue_pairs = 1;
     n->tx_timeout = n->net_conf.txtimer;
 
diff --git a/hw/nvme/ns.c b/hw/nvme/ns.c
index 8a3613d9ab..324f53ea0c 100644
--- a/hw/nvme/ns.c
+++ b/hw/nvme/ns.c
@@ -268,7 +268,7 @@ static void nvme_ns_init_zoned(NvmeNamespace *ns)
 
     nvme_ns_zoned_init_state(ns);
 
-    id_ns_z = g_malloc0(sizeof(NvmeIdNsZoned));
+    id_ns_z = g_new0(NvmeIdNsZoned, 1);
 
     /* MAR/MOR are zeroes-based, FFFFFFFFFh means no limit */
     id_ns_z->mar = cpu_to_le32(ns->params.max_active_zones - 1);
diff --git a/hw/pci-host/pnv_phb3.c b/hw/pci-host/pnv_phb3.c
index aafd46b635..ac6fe48975 100644
--- a/hw/pci-host/pnv_phb3.c
+++ b/hw/pci-host/pnv_phb3.c
@@ -946,7 +946,7 @@ static AddressSpace *pnv_phb3_dma_iommu(PCIBus *bus, void *opaque, int devfn)
     }
 
     if (ds == NULL) {
-        ds = g_malloc0(sizeof(PnvPhb3DMASpace));
+        ds = g_new0(PnvPhb3DMASpace, 1);
         ds->bus = bus;
         ds->devfn = devfn;
         ds->pe_num = PHB_INVALID_PE;
diff --git a/hw/pci-host/pnv_phb4.c b/hw/pci-host/pnv_phb4.c
index b5b384e9ee..d0d1612e1e 100644
--- a/hw/pci-host/pnv_phb4.c
+++ b/hw/pci-host/pnv_phb4.c
@@ -1466,7 +1466,7 @@ static AddressSpace *pnv_phb4_dma_iommu(PCIBus *bus, void *opaque, int devfn)
     ds = pnv_phb4_dma_find(phb, bus, devfn);
 
     if (ds == NULL) {
-        ds = g_malloc0(sizeof(PnvPhb4DMASpace));
+        ds = g_new0(PnvPhb4DMASpace, 1);
         ds->bus = bus;
         ds->devfn = devfn;
         ds->pe_num = PHB_INVALID_PE;
diff --git a/hw/pci/pcie_sriov.c b/hw/pci/pcie_sriov.c
index 87abad6ac8..8e3faf1f59 100644
--- a/hw/pci/pcie_sriov.c
+++ b/hw/pci/pcie_sriov.c
@@ -177,7 +177,7 @@ static void register_vfs(PCIDevice *dev)
     assert(sriov_cap > 0);
     num_vfs = pci_get_word(dev->config + sriov_cap + PCI_SRIOV_NUM_VF);
 
-    dev->exp.sriov_pf.vf = g_malloc(sizeof(PCIDevice *) * num_vfs);
+    dev->exp.sriov_pf.vf = g_new(PCIDevice *, num_vfs);
     assert(dev->exp.sriov_pf.vf);
 
     trace_sriov_register_vfs(dev->name, PCI_SLOT(dev->devfn),
diff --git a/hw/ppc/e500.c b/hw/ppc/e500.c
index 960e7efcd3..c7e6767f91 100644
--- a/hw/ppc/e500.c
+++ b/hw/ppc/e500.c
@@ -899,7 +899,7 @@ void ppce500_init(MachineState *machine)
         if (!i) {
             /* Primary CPU */
             struct boot_info *boot_info;
-            boot_info = g_malloc0(sizeof(struct boot_info));
+            boot_info = g_new0(struct boot_info, 1);
             qemu_register_reset(ppce500_cpu_reset, cpu);
             env->load_info = boot_info;
         } else {
diff --git a/hw/ppc/ppc.c b/hw/ppc/ppc.c
index 9e99625ea9..faa02d6710 100644
--- a/hw/ppc/ppc.c
+++ b/hw/ppc/ppc.c
@@ -1063,7 +1063,7 @@ clk_setup_cb cpu_ppc_tb_init (CPUPPCState *env, uint32_t freq)
     PowerPCCPU *cpu = env_archcpu(env);
     ppc_tb_t *tb_env;
 
-    tb_env = g_malloc0(sizeof(ppc_tb_t));
+    tb_env = g_new0(ppc_tb_t, 1);
     env->tb_env = tb_env;
     tb_env->flags = PPC_DECR_UNDERFLOW_TRIGGERED;
     if (is_book3s_arch2x(env)) {
@@ -1338,8 +1338,8 @@ clk_setup_cb ppc_40x_timers_init (CPUPPCState *env, uint32_t freq,
 
     trace_ppc40x_timers_init(freq);
 
-    tb_env = g_malloc0(sizeof(ppc_tb_t));
-    ppc40x_timer = g_malloc0(sizeof(ppc40x_timer_t));
+    tb_env = g_new0(ppc_tb_t, 1);
+    ppc40x_timer = g_new0(ppc40x_timer_t, 1);
 
     env->tb_env = tb_env;
     tb_env->flags = PPC_DECR_UNDERFLOW_TRIGGERED;
@@ -1447,7 +1447,7 @@ int ppc_dcr_init (CPUPPCState *env, int (*read_error)(int dcrn),
 {
     ppc_dcr_t *dcr_env;
 
-    dcr_env = g_malloc0(sizeof(ppc_dcr_t));
+    dcr_env = g_new0(ppc_dcr_t, 1);
     dcr_env->read_error = read_error;
     dcr_env->write_error = write_error;
     env->dcr_env = dcr_env;
diff --git a/hw/ppc/ppc405_boards.c b/hw/ppc/ppc405_boards.c
index 3ae2b36373..7e1a4ac955 100644
--- a/hw/ppc/ppc405_boards.c
+++ b/hw/ppc/ppc405_boards.c
@@ -130,7 +130,7 @@ static void ref405ep_fpga_init(MemoryRegion *sysmem, uint32_t base)
     ref405ep_fpga_t *fpga;
     MemoryRegion *fpga_memory = g_new(MemoryRegion, 1);
 
-    fpga = g_malloc0(sizeof(ref405ep_fpga_t));
+    fpga = g_new0(ref405ep_fpga_t, 1);
     memory_region_init_io(fpga_memory, NULL, &ref405ep_fpga_ops, fpga,
                           "fpga", 0x00000100);
     memory_region_add_subregion(sysmem, base, fpga_memory);
@@ -431,7 +431,7 @@ static void taihu_cpld_init(MemoryRegion *sysmem, uint32_t base)
     taihu_cpld_t *cpld;
     MemoryRegion *cpld_memory = g_new(MemoryRegion, 1);
 
-    cpld = g_malloc0(sizeof(taihu_cpld_t));
+    cpld = g_new0(taihu_cpld_t, 1);
     memory_region_init_io(cpld_memory, NULL, &taihu_cpld_ops, cpld, "cpld", 0x100);
     memory_region_add_subregion(sysmem, base, cpld_memory);
     qemu_register_reset(&taihu_cpld_reset, cpld);
diff --git a/hw/ppc/ppc405_uc.c b/hw/ppc/ppc405_uc.c
index 8aacd275a6..36c8ba6f3c 100644
--- a/hw/ppc/ppc405_uc.c
+++ b/hw/ppc/ppc405_uc.c
@@ -215,7 +215,7 @@ void ppc4xx_plb_init(CPUPPCState *env)
 {
     ppc4xx_plb_t *plb;
 
-    plb = g_malloc0(sizeof(ppc4xx_plb_t));
+    plb = g_new0(ppc4xx_plb_t, 1);
     ppc_dcr_register(env, PLB3A0_ACR, plb, &dcr_read_plb, &dcr_write_plb);
     ppc_dcr_register(env, PLB4A0_ACR, plb, &dcr_read_plb, &dcr_write_plb);
     ppc_dcr_register(env, PLB0_ACR, plb, &dcr_read_plb, &dcr_write_plb);
@@ -300,7 +300,7 @@ static void ppc4xx_pob_init(CPUPPCState *env)
 {
     ppc4xx_pob_t *pob;
 
-    pob = g_malloc0(sizeof(ppc4xx_pob_t));
+    pob = g_new0(ppc4xx_pob_t, 1);
     ppc_dcr_register(env, POB0_BEAR, pob, &dcr_read_pob, &dcr_write_pob);
     ppc_dcr_register(env, POB0_BESR0, pob, &dcr_read_pob, &dcr_write_pob);
     ppc_dcr_register(env, POB0_BESR1, pob, &dcr_read_pob, &dcr_write_pob);
@@ -380,7 +380,7 @@ static void ppc4xx_opba_init(hwaddr base)
 
     trace_opba_init(base);
 
-    opba = g_malloc0(sizeof(ppc4xx_opba_t));
+    opba = g_new0(ppc4xx_opba_t, 1);
     memory_region_init_io(&opba->io, NULL, &opba_ops, opba, "opba", 0x002);
     memory_region_add_subregion(get_system_memory(), base, &opba->io);
     qemu_register_reset(ppc4xx_opba_reset, opba);
@@ -575,7 +575,7 @@ void ppc405_ebc_init(CPUPPCState *env)
 {
     ppc4xx_ebc_t *ebc;
 
-    ebc = g_malloc0(sizeof(ppc4xx_ebc_t));
+    ebc = g_new0(ppc4xx_ebc_t, 1);
     qemu_register_reset(&ebc_reset, ebc);
     ppc_dcr_register(env, EBC0_CFGADDR,
                      ebc, &dcr_read_ebc, &dcr_write_ebc);
@@ -658,7 +658,7 @@ static void ppc405_dma_init(CPUPPCState *env, qemu_irq irqs[4])
 {
     ppc405_dma_t *dma;
 
-    dma = g_malloc0(sizeof(ppc405_dma_t));
+    dma = g_new0(ppc405_dma_t, 1);
     memcpy(dma->irqs, irqs, 4 * sizeof(qemu_irq));
     qemu_register_reset(&ppc405_dma_reset, dma);
     ppc_dcr_register(env, DMA0_CR0,
@@ -757,7 +757,7 @@ static void ppc405_gpio_init(hwaddr base)
 
     trace_ppc405_gpio_init(base);
 
-    gpio = g_malloc0(sizeof(ppc405_gpio_t));
+    gpio = g_new0(ppc405_gpio_t, 1);
     memory_region_init_io(&gpio->io, NULL, &ppc405_gpio_ops, gpio, "pgio", 0x038);
     memory_region_add_subregion(get_system_memory(), base, &gpio->io);
     qemu_register_reset(&ppc405_gpio_reset, gpio);
@@ -906,7 +906,7 @@ static void ppc405_ocm_init(CPUPPCState *env)
 {
     ppc405_ocm_t *ocm;
 
-    ocm = g_malloc0(sizeof(ppc405_ocm_t));
+    ocm = g_new0(ppc405_ocm_t, 1);
     /* XXX: Size is 4096 or 0x04000000 */
     memory_region_init_ram(&ocm->isarc_ram, NULL, "ppc405.ocm", 4 * KiB,
                            &error_fatal);
@@ -1148,7 +1148,7 @@ static void ppc4xx_gpt_init(hwaddr base, qemu_irq irqs[5])
 
     trace_ppc4xx_gpt_init(base);
 
-    gpt = g_malloc0(sizeof(ppc4xx_gpt_t));
+    gpt = g_new0(ppc4xx_gpt_t, 1);
     for (i = 0; i < 5; i++) {
         gpt->irqs[i] = irqs[i];
     }
@@ -1399,7 +1399,7 @@ static void ppc405ep_cpc_init (CPUPPCState *env, clk_setup_t clk_setup[8],
 {
     ppc405ep_cpc_t *cpc;
 
-    cpc = g_malloc0(sizeof(ppc405ep_cpc_t));
+    cpc = g_new0(ppc405ep_cpc_t, 1);
     memcpy(cpc->clk_setup, clk_setup,
            PPC405EP_CLK_NB * sizeof(clk_setup_t));
     cpc->jtagid = 0x20267049;
diff --git a/hw/ppc/ppc4xx_devs.c b/hw/ppc/ppc4xx_devs.c
index e7d82ae501..737c0896b4 100644
--- a/hw/ppc/ppc4xx_devs.c
+++ b/hw/ppc/ppc4xx_devs.c
@@ -389,7 +389,7 @@ void ppc4xx_sdram_init (CPUPPCState *env, qemu_irq irq, int nbanks,
 {
     ppc4xx_sdram_t *sdram;
 
-    sdram = g_malloc0(sizeof(ppc4xx_sdram_t));
+    sdram = g_new0(ppc4xx_sdram_t, 1);
     sdram->irq = irq;
     sdram->nbanks = nbanks;
     sdram->ram_memories = ram_memories;
diff --git a/hw/ppc/ppc_booke.c b/hw/ppc/ppc_booke.c
index 10b643861f..ca22da196a 100644
--- a/hw/ppc/ppc_booke.c
+++ b/hw/ppc/ppc_booke.c
@@ -337,8 +337,8 @@ void ppc_booke_timers_init(PowerPCCPU *cpu, uint32_t freq, uint32_t flags)
     booke_timer_t *booke_timer;
     int ret = 0;
 
-    tb_env      = g_malloc0(sizeof(ppc_tb_t));
-    booke_timer = g_malloc0(sizeof(booke_timer_t));
+    tb_env      = g_new0(ppc_tb_t, 1);
+    booke_timer = g_new0(booke_timer_t, 1);
 
     cpu->env.tb_env = tb_env;
     tb_env->flags = flags | PPC_TIMER_BOOKE | PPC_DECR_ZERO_TRIGGERED;
diff --git a/hw/ppc/spapr.c b/hw/ppc/spapr.c
index 953fc65fa8..a4372ba189 100644
--- a/hw/ppc/spapr.c
+++ b/hw/ppc/spapr.c
@@ -3601,7 +3601,7 @@ static SpaprDimmState *spapr_pending_dimm_unplugs_add(SpaprMachineState *spapr,
      */
     ds = spapr_pending_dimm_unplugs_find(spapr, dimm);
     if (!ds) {
-        ds = g_malloc0(sizeof(SpaprDimmState));
+        ds = g_new0(SpaprDimmState, 1);
         ds->nr_lmbs = nr_lmbs;
         ds->dimm = dimm;
         QTAILQ_INSERT_HEAD(&spapr->pending_dimm_unplugs, ds, next);
diff --git a/hw/ppc/spapr_events.c b/hw/ppc/spapr_events.c
index 630e86282c..4508e40814 100644
--- a/hw/ppc/spapr_events.c
+++ b/hw/ppc/spapr_events.c
@@ -594,7 +594,7 @@ static void spapr_hotplug_req_event(uint8_t hp_id, uint8_t hp_action,
     struct rtas_event_log_v6_hp *hp;
 
     entry = g_new(SpaprEventLogEntry, 1);
-    new_hp = g_malloc0(sizeof(struct hp_extended_log));
+    new_hp = g_new0(struct hp_extended_log, 1);
     entry->extended_log = new_hp;
 
     v6hdr = &new_hp->v6hdr;
diff --git a/hw/ppc/spapr_hcall.c b/hw/ppc/spapr_hcall.c
index f008290787..7c8bb76f99 100644
--- a/hw/ppc/spapr_hcall.c
+++ b/hw/ppc/spapr_hcall.c
@@ -1596,7 +1596,7 @@ static target_ulong h_enter_nested(PowerPCCPU *cpu,
         return H_PARAMETER;
     }
 
-    spapr_cpu->nested_host_state = g_try_malloc(sizeof(CPUPPCState));
+    spapr_cpu->nested_host_state = g_try_new(CPUPPCState, 1);
     if (!spapr_cpu->nested_host_state) {
         return H_NO_MEM;
     }
diff --git a/hw/ppc/spapr_numa.c b/hw/ppc/spapr_numa.c
index 4f93bdefec..d7c0e212ba 100644
--- a/hw/ppc/spapr_numa.c
+++ b/hw/ppc/spapr_numa.c
@@ -436,8 +436,7 @@ int spapr_numa_write_assoc_lookup_arrays(SpaprMachineState *spapr, void *fdt,
     int i;
 
     /* ibm,associativity-lookup-arrays */
-    int_buf = g_malloc0((nr_nodes * max_distance_ref_points + 2) *
-                        sizeof(uint32_t));
+    int_buf = g_new0(uint32_t, nr_nodes * max_distance_ref_points + 2);
     cur_index = int_buf;
     int_buf[0] = cpu_to_be32(nr_nodes);
      /* Number of entries per associativity list */
diff --git a/hw/rdma/vmw/pvrdma_dev_ring.c b/hw/rdma/vmw/pvrdma_dev_ring.c
index 42130667a7..598e6adc5e 100644
--- a/hw/rdma/vmw/pvrdma_dev_ring.c
+++ b/hw/rdma/vmw/pvrdma_dev_ring.c
@@ -41,7 +41,7 @@ int pvrdma_ring_init(PvrdmaRing *ring, const char *name, PCIDevice *dev,
     qatomic_set(&ring->ring_state->cons_head, 0);
     */
     ring->npages = npages;
-    ring->pages = g_malloc0(npages * sizeof(void *));
+    ring->pages = g_new0(void *, npages);
 
     for (i = 0; i < npages; i++) {
         if (!tbl[i]) {
diff --git a/hw/rdma/vmw/pvrdma_qp_ops.c b/hw/rdma/vmw/pvrdma_qp_ops.c
index 8050287a6c..bd7cbf2bdf 100644
--- a/hw/rdma/vmw/pvrdma_qp_ops.c
+++ b/hw/rdma/vmw/pvrdma_qp_ops.c
@@ -154,7 +154,7 @@ void pvrdma_qp_send(PVRDMADev *dev, uint32_t qp_handle)
         CompHandlerCtx *comp_ctx;
 
         /* Prepare CQE */
-        comp_ctx = g_malloc(sizeof(CompHandlerCtx));
+        comp_ctx = g_new(CompHandlerCtx, 1);
         comp_ctx->dev = dev;
         comp_ctx->cq_handle = qp->send_cq_handle;
         comp_ctx->cqe.wr_id = wqe->hdr.wr_id;
@@ -217,7 +217,7 @@ void pvrdma_qp_recv(PVRDMADev *dev, uint32_t qp_handle)
         CompHandlerCtx *comp_ctx;
 
         /* Prepare CQE */
-        comp_ctx = g_malloc(sizeof(CompHandlerCtx));
+        comp_ctx = g_new(CompHandlerCtx, 1);
         comp_ctx->dev = dev;
         comp_ctx->cq_handle = qp->recv_cq_handle;
         comp_ctx->cqe.wr_id = wqe->hdr.wr_id;
@@ -259,7 +259,7 @@ void pvrdma_srq_recv(PVRDMADev *dev, uint32_t srq_handle)
         CompHandlerCtx *comp_ctx;
 
         /* Prepare CQE */
-        comp_ctx = g_malloc(sizeof(CompHandlerCtx));
+        comp_ctx = g_new(CompHandlerCtx, 1);
         comp_ctx->dev = dev;
         comp_ctx->cq_handle = srq->recv_cq_handle;
         comp_ctx->cqe.wr_id = wqe->hdr.wr_id;
diff --git a/hw/sh4/r2d.c b/hw/sh4/r2d.c
index 72759413f3..39fc4f19d9 100644
--- a/hw/sh4/r2d.c
+++ b/hw/sh4/r2d.c
@@ -190,7 +190,7 @@ static qemu_irq *r2d_fpga_init(MemoryRegion *sysmem,
 {
     r2d_fpga_t *s;
 
-    s = g_malloc0(sizeof(r2d_fpga_t));
+    s = g_new0(r2d_fpga_t, 1);
 
     s->irl = irl;
 
@@ -248,7 +248,7 @@ static void r2d_init(MachineState *machine)
     cpu = SUPERH_CPU(cpu_create(machine->cpu_type));
     env = &cpu->env;
 
-    reset_info = g_malloc0(sizeof(ResetData));
+    reset_info = g_new0(ResetData, 1);
     reset_info->cpu = cpu;
     reset_info->vector = env->pc;
     qemu_register_reset(main_cpu_reset, reset_info);
diff --git a/hw/sh4/sh7750.c b/hw/sh4/sh7750.c
index 43dfb6497b..c77792d150 100644
--- a/hw/sh4/sh7750.c
+++ b/hw/sh4/sh7750.c
@@ -770,7 +770,7 @@ SH7750State *sh7750_init(SuperHCPU *cpu, MemoryRegion *sysmem)
     SysBusDevice *sb;
     MemoryRegion *mr, *alias;
 
-    s = g_malloc0(sizeof(SH7750State));
+    s = g_new0(SH7750State, 1);
     s->cpu = cpu;
     s->periph_freq = 60000000; /* 60MHz */
     memory_region_init_io(&s->iomem, NULL, &sh7750_mem_ops, s,
diff --git a/hw/sparc/leon3.c b/hw/sparc/leon3.c
index 7b4dec1721..a9f2496827 100644
--- a/hw/sparc/leon3.c
+++ b/hw/sparc/leon3.c
@@ -241,7 +241,7 @@ static void leon3_generic_hw_init(MachineState *machine)
     cpu_sparc_set_id(env, 0);
 
     /* Reset data */
-    reset_info        = g_malloc0(sizeof(ResetData));
+    reset_info        = g_new0(ResetData, 1);
     reset_info->cpu   = cpu;
     reset_info->sp    = LEON3_RAM_OFFSET + ram_size;
     qemu_register_reset(main_cpu_reset, reset_info);
diff --git a/hw/sparc64/sparc64.c b/hw/sparc64/sparc64.c
index 8654e955eb..72f0849f50 100644
--- a/hw/sparc64/sparc64.c
+++ b/hw/sparc64/sparc64.c
@@ -81,7 +81,7 @@ static CPUTimer *cpu_timer_create(const char *name, SPARCCPU *cpu,
                                   QEMUBHFunc *cb, uint32_t frequency,
                                   uint64_t disabled_mask, uint64_t npt_mask)
 {
-    CPUTimer *timer = g_malloc0(sizeof(CPUTimer));
+    CPUTimer *timer = g_new0(CPUTimer, 1);
 
     timer->name = name;
     timer->frequency = frequency;
@@ -288,7 +288,7 @@ SPARCCPU *sparc64_cpu_devinit(const char *cpu_type, uint64_t prom_addr)
                                     hstick_frequency, TICK_INT_DIS,
                                     TICK_NPT_MASK);
 
-    reset_info = g_malloc0(sizeof(ResetData));
+    reset_info = g_new0(ResetData, 1);
     reset_info->cpu = cpu;
     reset_info->prom_addr = prom_addr;
     qemu_register_reset(main_cpu_reset, reset_info);
diff --git a/hw/timer/arm_timer.c b/hw/timer/arm_timer.c
index 15caff0e41..84cf2726bb 100644
--- a/hw/timer/arm_timer.c
+++ b/hw/timer/arm_timer.c
@@ -176,7 +176,7 @@ static arm_timer_state *arm_timer_init(uint32_t freq)
 {
     arm_timer_state *s;
 
-    s = (arm_timer_state *)g_malloc0(sizeof(arm_timer_state));
+    s = g_new0(arm_timer_state, 1);
     s->freq = freq;
     s->control = TIMER_CTRL_IE;
 
diff --git a/hw/timer/slavio_timer.c b/hw/timer/slavio_timer.c
index 03e33fc592..90fdce4c44 100644
--- a/hw/timer/slavio_timer.c
+++ b/hw/timer/slavio_timer.c
@@ -400,7 +400,7 @@ static void slavio_timer_init(Object *obj)
         uint64_t size;
         char timer_name[20];
 
-        tc = g_malloc0(sizeof(TimerContext));
+        tc = g_new0(TimerContext, 1);
         tc->s = s;
         tc->timer_index = i;
 
diff --git a/hw/vfio/pci.c b/hw/vfio/pci.c
index 7b45353ce2..436b5cbcb1 100644
--- a/hw/vfio/pci.c
+++ b/hw/vfio/pci.c
@@ -1529,8 +1529,8 @@ static int vfio_msix_setup(VFIOPCIDevice *vdev, int pos, Error **errp)
     int ret;
     Error *err = NULL;
 
-    vdev->msix->pending = g_malloc0(BITS_TO_LONGS(vdev->msix->entries) *
-                                    sizeof(unsigned long));
+    vdev->msix->pending = g_new0(unsigned long,
+                                 BITS_TO_LONGS(vdev->msix->entries));
     ret = msix_init(&vdev->pdev, vdev->msix->entries,
                     vdev->bars[vdev->msix->table_bar].mr,
                     vdev->msix->table_bar, vdev->msix->table_offset,
diff --git a/hw/vfio/platform.c b/hw/vfio/platform.c
index f8f08a0f36..5af73f9287 100644
--- a/hw/vfio/platform.c
+++ b/hw/vfio/platform.c
@@ -71,7 +71,7 @@ static VFIOINTp *vfio_init_intp(VFIODevice *vbasedev,
     sysbus_init_irq(sbdev, &intp->qemuirq);
 
     /* Get an eventfd for trigger */
-    intp->interrupt = g_malloc0(sizeof(EventNotifier));
+    intp->interrupt = g_new0(EventNotifier, 1);
     ret = event_notifier_init(intp->interrupt, 0);
     if (ret) {
         g_free(intp->interrupt);
@@ -82,7 +82,7 @@ static VFIOINTp *vfio_init_intp(VFIODevice *vbasedev,
     }
     if (vfio_irq_is_automasked(intp)) {
         /* Get an eventfd for resample/unmask */
-        intp->unmask = g_malloc0(sizeof(EventNotifier));
+        intp->unmask = g_new0(EventNotifier, 1);
         ret = event_notifier_init(intp->unmask, 0);
         if (ret) {
             g_free(intp->interrupt);
diff --git a/hw/virtio/virtio-crypto.c b/hw/virtio/virtio-crypto.c
index 54f9bbb789..dcd80b904d 100644
--- a/hw/virtio/virtio-crypto.c
+++ b/hw/virtio/virtio-crypto.c
@@ -812,7 +812,7 @@ static void virtio_crypto_device_realize(DeviceState *dev, Error **errp)
 
     virtio_init(vdev, "virtio-crypto", VIRTIO_ID_CRYPTO, vcrypto->config_size);
     vcrypto->curr_queues = 1;
-    vcrypto->vqs = g_malloc0(sizeof(VirtIOCryptoQueue) * vcrypto->max_queues);
+    vcrypto->vqs = g_new0(VirtIOCryptoQueue, vcrypto->max_queues);
     for (i = 0; i < vcrypto->max_queues; i++) {
         vcrypto->vqs[i].dataq =
                  virtio_add_queue(vdev, 1024, virtio_crypto_handle_dataq_bh);
diff --git a/hw/virtio/virtio-iommu.c b/hw/virtio/virtio-iommu.c
index 239fe97b12..664cbd9583 100644
--- a/hw/virtio/virtio-iommu.c
+++ b/hw/virtio/virtio-iommu.c
@@ -316,7 +316,7 @@ static AddressSpace *virtio_iommu_find_add_as(PCIBus *bus, void *opaque,
         char *name = g_strdup_printf("%s-%d-%d",
                                      TYPE_VIRTIO_IOMMU_MEMORY_REGION,
                                      mr_index++, devfn);
-        sdev = sbus->pbdev[devfn] = g_malloc0(sizeof(IOMMUDevice));
+        sdev = sbus->pbdev[devfn] = g_new0(IOMMUDevice, 1);
 
         sdev->viommu = s;
         sdev->bus = bus;
diff --git a/hw/virtio/virtio.c b/hw/virtio/virtio.c
index 9e8f51dfb0..32b1859391 100644
--- a/hw/virtio/virtio.c
+++ b/hw/virtio/virtio.c
@@ -2380,8 +2380,7 @@ VirtQueue *virtio_add_queue(VirtIODevice *vdev, int queue_size,
     vdev->vq[i].vring.num_default = queue_size;
     vdev->vq[i].vring.align = VIRTIO_PCI_VRING_ALIGN;
     vdev->vq[i].handle_output = handle_output;
-    vdev->vq[i].used_elems = g_malloc0(sizeof(VirtQueueElement) *
-                                       queue_size);
+    vdev->vq[i].used_elems = g_new0(VirtQueueElement, queue_size);
 
     return &vdev->vq[i];
 }
@@ -3228,7 +3227,7 @@ void virtio_init(VirtIODevice *vdev, const char *name,
     qatomic_set(&vdev->isr, 0);
     vdev->queue_sel = 0;
     vdev->config_vector = VIRTIO_NO_VECTOR;
-    vdev->vq = g_malloc0(sizeof(VirtQueue) * VIRTIO_QUEUE_MAX);
+    vdev->vq = g_new0(VirtQueue, VIRTIO_QUEUE_MAX);
     vdev->vm_running = runstate_is_running();
     vdev->broken = false;
     for (i = 0; i < VIRTIO_QUEUE_MAX; i++) {
diff --git a/hw/xtensa/xtfpga.c b/hw/xtensa/xtfpga.c
index 17f087b395..c1e004e882 100644
--- a/hw/xtensa/xtfpga.c
+++ b/hw/xtensa/xtfpga.c
@@ -126,7 +126,7 @@ static const MemoryRegionOps xtfpga_fpga_ops = {
 static XtfpgaFpgaState *xtfpga_fpga_init(MemoryRegion *address_space,
                                          hwaddr base, uint32_t freq)
 {
-    XtfpgaFpgaState *s = g_malloc(sizeof(XtfpgaFpgaState));
+    XtfpgaFpgaState *s = g_new(XtfpgaFpgaState, 1);
 
     memory_region_init_io(&s->iomem, NULL, &xtfpga_fpga_ops, s,
                           "xtfpga.fpga", 0x10000);
diff --git a/linux-user/syscall.c b/linux-user/syscall.c
index b9b18a7eaf..75ed71eb46 100644
--- a/linux-user/syscall.c
+++ b/linux-user/syscall.c
@@ -5076,7 +5076,7 @@ do_ioctl_usbdevfs_submiturb(const IOCTLEntry *ie, uint8_t *buf_temp,
     target_size = thunk_type_size(arg_type, THUNK_TARGET);
 
     /* construct host copy of urb and metadata */
-    lurb = g_try_malloc0(sizeof(struct live_urb));
+    lurb = g_try_new0(struct live_urb, 1);
     if (!lurb) {
         return -TARGET_ENOMEM;
     }
diff --git a/migration/dirtyrate.c b/migration/dirtyrate.c
index d65e744af9..aace12a787 100644
--- a/migration/dirtyrate.c
+++ b/migration/dirtyrate.c
@@ -91,7 +91,7 @@ static struct DirtyRateInfo *query_dirty_rate_info(void)
 {
     int i;
     int64_t dirty_rate = DirtyStat.dirty_rate;
-    struct DirtyRateInfo *info = g_malloc0(sizeof(DirtyRateInfo));
+    struct DirtyRateInfo *info = g_new0(DirtyRateInfo, 1);
     DirtyRateVcpuList *head = NULL, **tail = &head;
 
     info->status = CalculatingState;
@@ -112,7 +112,7 @@ static struct DirtyRateInfo *query_dirty_rate_info(void)
             info->sample_pages = 0;
             info->has_vcpu_dirty_rate = true;
             for (i = 0; i < DirtyStat.dirty_ring.nvcpu; i++) {
-                DirtyRateVcpu *rate = g_malloc0(sizeof(DirtyRateVcpu));
+                DirtyRateVcpu *rate = g_new0(DirtyRateVcpu, 1);
                 rate->id = DirtyStat.dirty_ring.rates[i].id;
                 rate->dirty_rate = DirtyStat.dirty_ring.rates[i].dirty_rate;
                 QAPI_LIST_APPEND(tail, rate);
diff --git a/migration/multifd-zlib.c b/migration/multifd-zlib.c
index aba1c88a0c..3a7ae44485 100644
--- a/migration/multifd-zlib.c
+++ b/migration/multifd-zlib.c
@@ -43,7 +43,7 @@ struct zlib_data {
  */
 static int zlib_send_setup(MultiFDSendParams *p, Error **errp)
 {
-    struct zlib_data *z = g_malloc0(sizeof(struct zlib_data));
+    struct zlib_data *z = g_new0(struct zlib_data, 1);
     z_stream *zs = &z->zs;
 
     zs->zalloc = Z_NULL;
@@ -164,7 +164,7 @@ static int zlib_send_prepare(MultiFDSendParams *p, Error **errp)
  */
 static int zlib_recv_setup(MultiFDRecvParams *p, Error **errp)
 {
-    struct zlib_data *z = g_malloc0(sizeof(struct zlib_data));
+    struct zlib_data *z = g_new0(struct zlib_data, 1);
     z_stream *zs = &z->zs;
 
     p->data = z;
diff --git a/migration/ram.c b/migration/ram.c
index 170e522a1f..3532f64ecb 100644
--- a/migration/ram.c
+++ b/migration/ram.c
@@ -2059,7 +2059,7 @@ int ram_save_queue_pages(const char *rbname, ram_addr_t start, ram_addr_t len)
     }
 
     struct RAMSrcPageRequest *new_entry =
-        g_malloc0(sizeof(struct RAMSrcPageRequest));
+        g_new0(struct RAMSrcPageRequest, 1);
     new_entry->rb = ramblock;
     new_entry->offset = start;
     new_entry->len = len;
diff --git a/monitor/misc.c b/monitor/misc.c
index b1839cb8ee..a756dbd6db 100644
--- a/monitor/misc.c
+++ b/monitor/misc.c
@@ -1028,7 +1028,7 @@ void qmp_getfd(const char *fdname, Error **errp)
         return;
     }
 
-    monfd = g_malloc0(sizeof(mon_fd_t));
+    monfd = g_new0(mon_fd_t, 1);
     monfd->name = g_strdup(fdname);
     monfd->fd = fd;
 
diff --git a/monitor/qmp-cmds.c b/monitor/qmp-cmds.c
index ad82c275c4..0b04855ce8 100644
--- a/monitor/qmp-cmds.c
+++ b/monitor/qmp-cmds.c
@@ -318,7 +318,7 @@ ACPIOSTInfoList *qmp_query_acpi_ospm_status(Error **errp)
 
 MemoryInfo *qmp_query_memory_size_summary(Error **errp)
 {
-    MemoryInfo *mem_info = g_malloc0(sizeof(MemoryInfo));
+    MemoryInfo *mem_info = g_new0(MemoryInfo, 1);
     MachineState *ms = MACHINE(qdev_get_machine());
 
     mem_info->base_memory = ms->ram_size;
diff --git a/qga/commands-win32.c b/qga/commands-win32.c
index 4fbbad793f..3c428213db 100644
--- a/qga/commands-win32.c
+++ b/qga/commands-win32.c
@@ -949,7 +949,7 @@ static GuestDiskAddressList *build_guest_disk_info(char *guid, Error **errp)
         } else if (last_err == ERROR_INVALID_FUNCTION) {
             /* Possibly CD-ROM or a shared drive. Try to pass the volume */
             g_debug("volume not on disk");
-            disk = g_malloc0(sizeof(GuestDiskAddress));
+            disk = g_new0(GuestDiskAddress, 1);
             disk->has_dev = true;
             disk->dev = g_strdup(name);
             get_single_disk_info(0xffffffff, disk, &local_err);
@@ -972,7 +972,7 @@ static GuestDiskAddressList *build_guest_disk_info(char *guid, Error **errp)
 
     /* Go through each extent */
     for (i = 0; i < extents->NumberOfDiskExtents; i++) {
-        disk = g_malloc0(sizeof(GuestDiskAddress));
+        disk = g_new0(GuestDiskAddress, 1);
 
         /* Disk numbers directly correspond to numbers used in UNCs
          *
@@ -1076,7 +1076,7 @@ GuestDiskInfoList *qmp_guest_get_disks(Error **errp)
             sdn.DeviceNumber);
 
         g_debug("  number: %lu", sdn.DeviceNumber);
-        address = g_malloc0(sizeof(GuestDiskAddress));
+        address = g_new0(GuestDiskAddress, 1);
         address->has_dev = true;
         address->dev = g_strdup(disk->name);
         get_single_disk_info(sdn.DeviceNumber, address, &local_err);
@@ -1368,7 +1368,7 @@ qmp_guest_fstrim(bool has_minimum, int64_t minimum, Error **errp)
             continue;
         }
 
-        uc_path = g_malloc(sizeof(WCHAR) * char_count);
+        uc_path = g_new(WCHAR, char_count);
         if (!GetVolumePathNamesForVolumeNameW(guid, uc_path, char_count,
                                               &char_count) || !*uc_path) {
             /* strange, but this condition could be faced even with size == 2 */
diff --git a/qga/commands.c b/qga/commands.c
index 80501e4a73..72e6022207 100644
--- a/qga/commands.c
+++ b/qga/commands.c
@@ -244,7 +244,7 @@ static char **guest_exec_get_args(const strList *entry, bool log)
 
     str = g_malloc(str_size);
     *str = 0;
-    args = g_malloc(count * sizeof(char *));
+    args = g_new(char *, count);
     for (it = entry; it != NULL; it = it->next) {
         args[i++] = it->value;
         pstrcat(str, str_size, it->value);
diff --git a/qom/qom-qmp-cmds.c b/qom/qom-qmp-cmds.c
index 2d6f41ecc7..2e63a4c184 100644
--- a/qom/qom-qmp-cmds.c
+++ b/qom/qom-qmp-cmds.c
@@ -49,7 +49,7 @@ ObjectPropertyInfoList *qmp_qom_list(const char *path, Error **errp)
 
     object_property_iter_init(&iter, obj);
     while ((prop = object_property_iter_next(&iter))) {
-        ObjectPropertyInfo *value = g_malloc0(sizeof(ObjectPropertyInfo));
+        ObjectPropertyInfo *value = g_new0(ObjectPropertyInfo, 1);
 
         QAPI_LIST_PREPEND(props, value);
 
diff --git a/replay/replay-char.c b/replay/replay-char.c
index dc0002367e..d2025948cf 100644
--- a/replay/replay-char.c
+++ b/replay/replay-char.c
@@ -50,7 +50,7 @@ void replay_register_char_driver(Chardev *chr)
 
 void replay_chr_be_write(Chardev *s, uint8_t *buf, int len)
 {
-    CharEvent *event = g_malloc0(sizeof(CharEvent));
+    CharEvent *event = g_new0(CharEvent, 1);
 
     event->id = find_char_driver(s);
     if (event->id < 0) {
@@ -85,7 +85,7 @@ void replay_event_char_read_save(void *opaque)
 
 void *replay_event_char_read_load(void)
 {
-    CharEvent *event = g_malloc0(sizeof(CharEvent));
+    CharEvent *event = g_new0(CharEvent, 1);
 
     event->id = replay_get_byte();
     replay_get_array_alloc(&event->buf, &event->len);
diff --git a/replay/replay-events.c b/replay/replay-events.c
index 15983dd250..ac47c89834 100644
--- a/replay/replay-events.c
+++ b/replay/replay-events.c
@@ -119,7 +119,7 @@ void replay_add_event(ReplayAsyncEventKind event_kind,
         return;
     }
 
-    Event *event = g_malloc0(sizeof(Event));
+    Event *event = g_new0(Event, 1);
     event->event_kind = event_kind;
     event->opaque = opaque;
     event->opaque2 = opaque2;
@@ -243,17 +243,17 @@ static Event *replay_read_event(int checkpoint)
         }
         break;
     case REPLAY_ASYNC_EVENT_INPUT:
-        event = g_malloc0(sizeof(Event));
+        event = g_new0(Event, 1);
         event->event_kind = replay_state.read_event_kind;
         event->opaque = replay_read_input_event();
         return event;
     case REPLAY_ASYNC_EVENT_INPUT_SYNC:
-        event = g_malloc0(sizeof(Event));
+        event = g_new0(Event, 1);
         event->event_kind = replay_state.read_event_kind;
         event->opaque = 0;
         return event;
     case REPLAY_ASYNC_EVENT_CHAR_READ:
-        event = g_malloc0(sizeof(Event));
+        event = g_new0(Event, 1);
         event->event_kind = replay_state.read_event_kind;
         event->opaque = replay_event_char_read_load();
         return event;
@@ -263,7 +263,7 @@ static Event *replay_read_event(int checkpoint)
         }
         break;
     case REPLAY_ASYNC_EVENT_NET:
-        event = g_malloc0(sizeof(Event));
+        event = g_new0(Event, 1);
         event->event_kind = replay_state.read_event_kind;
         event->opaque = replay_event_net_load();
         return event;
diff --git a/scripts/coverity-scan/model.c b/scripts/coverity-scan/model.c
index 9d4fba53d9..30bea672e1 100644
--- a/scripts/coverity-scan/model.c
+++ b/scripts/coverity-scan/model.c
@@ -356,7 +356,7 @@ int g_poll (GPollFD *fds, unsigned nfds, int timeout)
 typedef struct _GIOChannel GIOChannel;
 GIOChannel *g_io_channel_unix_new(int fd)
 {
-    GIOChannel *c = g_malloc0(sizeof(GIOChannel));
+    GIOChannel *c = g_new0(GIOChannel, 1);
     __coverity_escape__(fd);
     return c;
 }
diff --git a/semihosting/config.c b/semihosting/config.c
index 137171b717..6d48ec9566 100644
--- a/semihosting/config.c
+++ b/semihosting/config.c
@@ -98,7 +98,7 @@ static int add_semihosting_arg(void *opaque,
     if (strcmp(name, "arg") == 0) {
         s->argc++;
         /* one extra element as g_strjoinv() expects NULL-terminated array */
-        s->argv = g_realloc(s->argv, (s->argc + 1) * sizeof(void *));
+        s->argv = g_renew(void *, s->argv, s->argc + 1);
         s->argv[s->argc - 1] = val;
         s->argv[s->argc] = NULL;
     }
diff --git a/softmmu/bootdevice.c b/softmmu/bootdevice.c
index add4e3d2d1..c0713bfa9f 100644
--- a/softmmu/bootdevice.c
+++ b/softmmu/bootdevice.c
@@ -166,7 +166,7 @@ void add_boot_device_path(int32_t bootindex, DeviceState *dev,
 
     del_boot_device_path(dev, suffix);
 
-    node = g_malloc0(sizeof(FWBootEntry));
+    node = g_new0(FWBootEntry, 1);
     node->bootindex = bootindex;
     node->suffix = g_strdup(suffix);
     node->dev = dev;
@@ -367,7 +367,7 @@ void add_boot_device_lchs(DeviceState *dev, const char *suffix,
 
     assert(dev != NULL || suffix != NULL);
 
-    node = g_malloc0(sizeof(FWLCHSEntry));
+    node = g_new0(FWLCHSEntry, 1);
     node->suffix = g_strdup(suffix);
     node->dev = dev;
     node->lcyls = lcyls;
diff --git a/softmmu/dma-helpers.c b/softmmu/dma-helpers.c
index 160095e4ba..7820fec54c 100644
--- a/softmmu/dma-helpers.c
+++ b/softmmu/dma-helpers.c
@@ -29,7 +29,7 @@ MemTxResult dma_memory_set(AddressSpace *as, dma_addr_t addr,
 void qemu_sglist_init(QEMUSGList *qsg, DeviceState *dev, int alloc_hint,
                       AddressSpace *as)
 {
-    qsg->sg = g_malloc(alloc_hint * sizeof(ScatterGatherEntry));
+    qsg->sg = g_new(ScatterGatherEntry, alloc_hint);
     qsg->nsg = 0;
     qsg->nalloc = alloc_hint;
     qsg->size = 0;
@@ -42,7 +42,7 @@ void qemu_sglist_add(QEMUSGList *qsg, dma_addr_t base, dma_addr_t len)
 {
     if (qsg->nsg == qsg->nalloc) {
         qsg->nalloc = 2 * qsg->nalloc + 1;
-        qsg->sg = g_realloc(qsg->sg, qsg->nalloc * sizeof(ScatterGatherEntry));
+        qsg->sg = g_renew(ScatterGatherEntry, qsg->sg, qsg->nalloc);
     }
     qsg->sg[qsg->nsg].base = base;
     qsg->sg[qsg->nsg].len = len;
diff --git a/softmmu/memory_mapping.c b/softmmu/memory_mapping.c
index 8320165ea2..f6f0a829fd 100644
--- a/softmmu/memory_mapping.c
+++ b/softmmu/memory_mapping.c
@@ -42,7 +42,7 @@ static void create_new_memory_mapping(MemoryMappingList *list,
 {
     MemoryMapping *memory_mapping;
 
-    memory_mapping = g_malloc(sizeof(MemoryMapping));
+    memory_mapping = g_new(MemoryMapping, 1);
     memory_mapping->phys_addr = phys_addr;
     memory_mapping->virt_addr = virt_addr;
     memory_mapping->length = length;
diff --git a/target/i386/cpu-sysemu.c b/target/i386/cpu-sysemu.c
index 37b7c562f5..e254d8ba10 100644
--- a/target/i386/cpu-sysemu.c
+++ b/target/i386/cpu-sysemu.c
@@ -313,7 +313,7 @@ GuestPanicInformation *x86_cpu_get_crash_info(CPUState *cs)
     GuestPanicInformation *panic_info = NULL;
 
     if (hyperv_feat_enabled(cpu, HYPERV_FEAT_CRASH)) {
-        panic_info = g_malloc0(sizeof(GuestPanicInformation));
+        panic_info = g_new0(GuestPanicInformation, 1);
 
         panic_info->type = GUEST_PANIC_INFORMATION_TYPE_HYPER_V;
 
diff --git a/target/i386/hax/hax-accel-ops.c b/target/i386/hax/hax-accel-ops.c
index 136630e9b2..18114fe34d 100644
--- a/target/i386/hax/hax-accel-ops.c
+++ b/target/i386/hax/hax-accel-ops.c
@@ -61,8 +61,8 @@ static void hax_start_vcpu_thread(CPUState *cpu)
 {
     char thread_name[VCPU_THREAD_NAME_SIZE];
 
-    cpu->thread = g_malloc0(sizeof(QemuThread));
-    cpu->halt_cond = g_malloc0(sizeof(QemuCond));
+    cpu->thread = g_new0(QemuThread, 1);
+    cpu->halt_cond = g_new0(QemuCond, 1);
     qemu_cond_init(cpu->halt_cond);
 
     snprintf(thread_name, VCPU_THREAD_NAME_SIZE, "CPU %d/HAX",
diff --git a/target/i386/nvmm/nvmm-accel-ops.c b/target/i386/nvmm/nvmm-accel-ops.c
index f788f75289..6c46101ac1 100644
--- a/target/i386/nvmm/nvmm-accel-ops.c
+++ b/target/i386/nvmm/nvmm-accel-ops.c
@@ -64,8 +64,8 @@ static void nvmm_start_vcpu_thread(CPUState *cpu)
 {
     char thread_name[VCPU_THREAD_NAME_SIZE];
 
-    cpu->thread = g_malloc0(sizeof(QemuThread));
-    cpu->halt_cond = g_malloc0(sizeof(QemuCond));
+    cpu->thread = g_new0(QemuThread, 1);
+    cpu->halt_cond = g_new0(QemuCond, 1);
     qemu_cond_init(cpu->halt_cond);
     snprintf(thread_name, VCPU_THREAD_NAME_SIZE, "CPU %d/NVMM",
              cpu->cpu_index);
diff --git a/target/i386/whpx/whpx-accel-ops.c b/target/i386/whpx/whpx-accel-ops.c
index 1d30e4e2ed..dd2a9f7657 100644
--- a/target/i386/whpx/whpx-accel-ops.c
+++ b/target/i386/whpx/whpx-accel-ops.c
@@ -64,8 +64,8 @@ static void whpx_start_vcpu_thread(CPUState *cpu)
 {
     char thread_name[VCPU_THREAD_NAME_SIZE];
 
-    cpu->thread = g_malloc0(sizeof(QemuThread));
-    cpu->halt_cond = g_malloc0(sizeof(QemuCond));
+    cpu->thread = g_new0(QemuThread, 1);
+    cpu->halt_cond = g_new0(QemuCond, 1);
     qemu_cond_init(cpu->halt_cond);
     snprintf(thread_name, VCPU_THREAD_NAME_SIZE, "CPU %d/WHPX",
              cpu->cpu_index);
diff --git a/target/i386/whpx/whpx-all.c b/target/i386/whpx/whpx-all.c
index c7e25abf42..9fd287e5d4 100644
--- a/target/i386/whpx/whpx-all.c
+++ b/target/i386/whpx/whpx-all.c
@@ -1354,7 +1354,7 @@ int whpx_init_vcpu(CPUState *cpu)
         }
     }
 
-    vcpu = g_malloc0(sizeof(struct whpx_vcpu));
+    vcpu = g_new0(struct whpx_vcpu, 1);
 
     if (!vcpu) {
         error_report("WHPX: Failed to allocte VCPU context.");
diff --git a/target/s390x/cpu-sysemu.c b/target/s390x/cpu-sysemu.c
index 5471e01ee8..948e4bd3e0 100644
--- a/target/s390x/cpu-sysemu.c
+++ b/target/s390x/cpu-sysemu.c
@@ -76,7 +76,7 @@ static GuestPanicInformation *s390_cpu_get_crash_info(CPUState *cs)
     S390CPU *cpu = S390_CPU(cs);
 
     cpu_synchronize_state(cs);
-    panic_info = g_malloc0(sizeof(GuestPanicInformation));
+    panic_info = g_new0(GuestPanicInformation, 1);
 
     panic_info->type = GUEST_PANIC_INFORMATION_TYPE_S390;
     panic_info->u.s390.core = cpu->env.core_id;
diff --git a/tests/unit/test-hbitmap.c b/tests/unit/test-hbitmap.c
index b6726cf76b..a4fe067917 100644
--- a/tests/unit/test-hbitmap.c
+++ b/tests/unit/test-hbitmap.c
@@ -113,7 +113,7 @@ static void hbitmap_test_truncate_impl(TestHBitmapData *data,
 
     n = hbitmap_test_array_size(size);
     m = hbitmap_test_array_size(data->old_size);
-    data->bits = g_realloc(data->bits, sizeof(unsigned long) * n);
+    data->bits = g_renew(unsigned long, data->bits, n);
     if (n > m) {
         memset(&data->bits[m], 0x00, sizeof(unsigned long) * (n - m));
     }
diff --git a/tests/unit/test-qmp-cmds.c b/tests/unit/test-qmp-cmds.c
index faa858624a..6085c09995 100644
--- a/tests/unit/test-qmp-cmds.c
+++ b/tests/unit/test-qmp-cmds.c
@@ -82,8 +82,8 @@ UserDefTwo *qmp_user_def_cmd2(UserDefOne *ud1a,
                               Error **errp)
 {
     UserDefTwo *ret;
-    UserDefOne *ud1c = g_malloc0(sizeof(UserDefOne));
-    UserDefOne *ud1d = g_malloc0(sizeof(UserDefOne));
+    UserDefOne *ud1c = g_new0(UserDefOne, 1);
+    UserDefOne *ud1d = g_new0(UserDefOne, 1);
 
     ud1c->string = strdup(ud1a->string);
     ud1c->integer = ud1a->integer;
@@ -344,23 +344,23 @@ static void test_dealloc_types(void)
     UserDefOne *ud1test, *ud1a, *ud1b;
     UserDefOneList *ud1list;
 
-    ud1test = g_malloc0(sizeof(UserDefOne));
+    ud1test = g_new0(UserDefOne, 1);
     ud1test->integer = 42;
     ud1test->string = g_strdup("hi there 42");
 
     qapi_free_UserDefOne(ud1test);
 
-    ud1a = g_malloc0(sizeof(UserDefOne));
+    ud1a = g_new0(UserDefOne, 1);
     ud1a->integer = 43;
     ud1a->string = g_strdup("hi there 43");
 
-    ud1b = g_malloc0(sizeof(UserDefOne));
+    ud1b = g_new0(UserDefOne, 1);
     ud1b->integer = 44;
     ud1b->string = g_strdup("hi there 44");
 
-    ud1list = g_malloc0(sizeof(UserDefOneList));
+    ud1list = g_new0(UserDefOneList, 1);
     ud1list->value = ud1a;
-    ud1list->next = g_malloc0(sizeof(UserDefOneList));
+    ud1list->next = g_new0(UserDefOneList, 1);
     ud1list->next->value = ud1b;
 
     qapi_free_UserDefOneList(ud1list);
diff --git a/tests/unit/test-qobject-output-visitor.c b/tests/unit/test-qobject-output-visitor.c
index 34d67a439a..6af4c33eec 100644
--- a/tests/unit/test-qobject-output-visitor.c
+++ b/tests/unit/test-qobject-output-visitor.c
@@ -338,7 +338,7 @@ static void test_visitor_out_union_flat(TestOutputVisitorData *data,
 {
     QDict *qdict;
 
-    UserDefFlatUnion *tmp = g_malloc0(sizeof(UserDefFlatUnion));
+    UserDefFlatUnion *tmp = g_new0(UserDefFlatUnion, 1);
     tmp->enum1 = ENUM_ONE_VALUE1;
     tmp->string = g_strdup("str");
     tmp->integer = 41;
diff --git a/tests/unit/test-vmstate.c b/tests/unit/test-vmstate.c
index 4688c03ea7..6a417bb102 100644
--- a/tests/unit/test-vmstate.c
+++ b/tests/unit/test-vmstate.c
@@ -1002,22 +1002,22 @@ static TestGTreeDomain *create_first_domain(void)
     TestGTreeMapping *map_a, *map_b;
     TestGTreeInterval *a, *b;
 
-    domain = g_malloc0(sizeof(TestGTreeDomain));
+    domain = g_new0(TestGTreeDomain, 1);
     domain->id = 6;
 
-    a = g_malloc0(sizeof(TestGTreeInterval));
+    a = g_new0(TestGTreeInterval, 1);
     a->low = 0x1000;
     a->high = 0x1FFF;
 
-    b = g_malloc0(sizeof(TestGTreeInterval));
+    b = g_new0(TestGTreeInterval, 1);
     b->low = 0x4000;
     b->high = 0x4FFF;
 
-    map_a = g_malloc0(sizeof(TestGTreeMapping));
+    map_a = g_new0(TestGTreeMapping, 1);
     map_a->phys_addr = 0xa000;
     map_a->flags = 1;
 
-    map_b = g_malloc0(sizeof(TestGTreeMapping));
+    map_b = g_new0(TestGTreeMapping, 1);
     map_b->phys_addr = 0xe0000;
     map_b->flags = 2;
 
@@ -1120,7 +1120,7 @@ static void diff_iommu(TestGTreeIOMMU *iommu1, TestGTreeIOMMU *iommu2)
 
 static void test_gtree_load_domain(void)
 {
-    TestGTreeDomain *dest_domain = g_malloc0(sizeof(TestGTreeDomain));
+    TestGTreeDomain *dest_domain = g_new0(TestGTreeDomain, 1);
     TestGTreeDomain *orig_domain = create_first_domain();
     QEMUFile *fload, *fsave;
     char eof;
@@ -1185,7 +1185,7 @@ uint8_t iommu_dump[] = {
 
 static TestGTreeIOMMU *create_iommu(void)
 {
-    TestGTreeIOMMU *iommu = g_malloc0(sizeof(TestGTreeIOMMU));
+    TestGTreeIOMMU *iommu = g_new0(TestGTreeIOMMU, 1);
     TestGTreeDomain *first_domain = create_first_domain();
     TestGTreeDomain *second_domain;
     TestGTreeMapping *map_c;
@@ -1196,7 +1196,7 @@ static TestGTreeIOMMU *create_iommu(void)
                                      NULL,
                                      destroy_domain);
 
-    second_domain = g_malloc0(sizeof(TestGTreeDomain));
+    second_domain = g_new0(TestGTreeDomain, 1);
     second_domain->id = 5;
     second_domain->mappings = g_tree_new_full((GCompareDataFunc)interval_cmp,
                                               NULL,
@@ -1206,11 +1206,11 @@ static TestGTreeIOMMU *create_iommu(void)
     g_tree_insert(iommu->domains, GUINT_TO_POINTER(6), first_domain);
     g_tree_insert(iommu->domains, (gpointer)0x0000000000000005, second_domain);
 
-    c = g_malloc0(sizeof(TestGTreeInterval));
+    c = g_new0(TestGTreeInterval, 1);
     c->low = 0x1000000;
     c->high = 0x1FFFFFF;
 
-    map_c = g_malloc0(sizeof(TestGTreeMapping));
+    map_c = g_new0(TestGTreeMapping, 1);
     map_c->phys_addr = 0xF000000;
     map_c->flags = 0x3;
 
@@ -1235,7 +1235,7 @@ static void test_gtree_save_iommu(void)
 
 static void test_gtree_load_iommu(void)
 {
-    TestGTreeIOMMU *dest_iommu = g_malloc0(sizeof(TestGTreeIOMMU));
+    TestGTreeIOMMU *dest_iommu = g_new0(TestGTreeIOMMU, 1);
     TestGTreeIOMMU *orig_iommu = create_iommu();
     QEMUFile *fsave, *fload;
     char eof;
@@ -1274,11 +1274,11 @@ static uint8_t qlist_dump[] = {
 
 static TestQListContainer *alloc_container(void)
 {
-    TestQListElement *a = g_malloc(sizeof(TestQListElement));
-    TestQListElement *b = g_malloc(sizeof(TestQListElement));
-    TestQListElement *c = g_malloc(sizeof(TestQListElement));
-    TestQListElement *d = g_malloc(sizeof(TestQListElement));
-    TestQListContainer *container = g_malloc(sizeof(TestQListContainer));
+    TestQListElement *a = g_new(TestQListElement, 1);
+    TestQListElement *b = g_new(TestQListElement, 1);
+    TestQListElement *c = g_new(TestQListElement, 1);
+    TestQListElement *d = g_new(TestQListElement, 1);
+    TestQListContainer *container = g_new(TestQListContainer, 1);
 
     a->id = 0x0a;
     b->id = 0x0b00;
@@ -1332,11 +1332,11 @@ static void manipulate_container(TestQListContainer *c)
      TestQListElement *prev = NULL, *iter = QLIST_FIRST(&c->list);
      TestQListElement *elem;
 
-     elem = g_malloc(sizeof(TestQListElement));
+     elem = g_new(TestQListElement, 1);
      elem->id = 0x12;
      QLIST_INSERT_AFTER(iter, elem, next);
 
-     elem = g_malloc(sizeof(TestQListElement));
+     elem = g_new(TestQListElement, 1);
      elem->id = 0x13;
      QLIST_INSERT_HEAD(&c->list, elem, next);
 
@@ -1345,11 +1345,11 @@ static void manipulate_container(TestQListContainer *c)
         iter = QLIST_NEXT(iter, next);
      }
 
-     elem = g_malloc(sizeof(TestQListElement));
+     elem = g_new(TestQListElement, 1);
      elem->id = 0x14;
      QLIST_INSERT_BEFORE(prev, elem, next);
 
-     elem = g_malloc(sizeof(TestQListElement));
+     elem = g_new(TestQListElement, 1);
      elem->id = 0x15;
      QLIST_INSERT_AFTER(prev, elem, next);
 
@@ -1370,7 +1370,7 @@ static void test_load_qlist(void)
 {
     QEMUFile *fsave, *fload;
     TestQListContainer *orig_container = alloc_container();
-    TestQListContainer *dest_container = g_malloc0(sizeof(TestQListContainer));
+    TestQListContainer *dest_container = g_new0(TestQListContainer, 1);
     char eof;
 
     QLIST_INIT(&dest_container->list);
diff --git a/ui/vnc-enc-tight.c b/ui/vnc-enc-tight.c
index cebd35841a..7b86a4713d 100644
--- a/ui/vnc-enc-tight.c
+++ b/ui/vnc-enc-tight.c
@@ -1477,7 +1477,7 @@ static int send_sub_rect(VncState *vs, int x, int y, int w, int h)
 #endif
 
     if (!color_count_palette) {
-        color_count_palette = g_malloc(sizeof(VncPalette));
+        color_count_palette = g_new(VncPalette, 1);
         vnc_tight_cleanup_notifier.notify = vnc_tight_cleanup;
         qemu_thread_atexit_add(&vnc_tight_cleanup_notifier);
     }
diff --git a/util/envlist.c b/util/envlist.c
index 2bcc13f094..ab5553498a 100644
--- a/util/envlist.c
+++ b/util/envlist.c
@@ -217,7 +217,7 @@ envlist_to_environ(const envlist_t *envlist, size_t *count)
 	struct envlist_entry *entry;
 	char **env, **penv;
 
-	penv = env = g_malloc((envlist->el_count + 1) * sizeof(char *));
+	penv = env = g_new(char *, envlist->el_count + 1);
 
 	for (entry = envlist->el_entries.lh_first; entry != NULL;
 	    entry = entry->ev_link.le_next) {
diff --git a/util/hbitmap.c b/util/hbitmap.c
index dd0501d9a7..ea989e1f0e 100644
--- a/util/hbitmap.c
+++ b/util/hbitmap.c
@@ -862,7 +862,7 @@ void hbitmap_truncate(HBitmap *hb, uint64_t size)
         }
         old = hb->sizes[i];
         hb->sizes[i] = size;
-        hb->levels[i] = g_realloc(hb->levels[i], size * sizeof(unsigned long));
+        hb->levels[i] = g_renew(unsigned long, hb->levels[i], size);
         if (!shrink) {
             memset(&hb->levels[i][old], 0x00,
                    (size - old) * sizeof(*hb->levels[i]));
diff --git a/util/main-loop.c b/util/main-loop.c
index 4d5a5b9943..b7b0ce4ca0 100644
--- a/util/main-loop.c
+++ b/util/main-loop.c
@@ -273,7 +273,7 @@ static PollingEntry *first_polling_entry;
 int qemu_add_polling_cb(PollingFunc *func, void *opaque)
 {
     PollingEntry **ppe, *pe;
-    pe = g_malloc0(sizeof(PollingEntry));
+    pe = g_new0(PollingEntry, 1);
     pe->func = func;
     pe->opaque = opaque;
     for(ppe = &first_polling_entry; *ppe != NULL; ppe = &(*ppe)->next);
diff --git a/util/qemu-timer.c b/util/qemu-timer.c
index f36c75e594..a670a57881 100644
--- a/util/qemu-timer.c
+++ b/util/qemu-timer.c
@@ -100,7 +100,7 @@ QEMUTimerList *timerlist_new(QEMUClockType type,
     QEMUTimerList *timer_list;
     QEMUClock *clock = qemu_clock_ptr(type);
 
-    timer_list = g_malloc0(sizeof(QEMUTimerList));
+    timer_list = g_new0(QEMUTimerList, 1);
     qemu_event_init(&timer_list->timers_done_ev, true);
     timer_list->clock = clock;
     timer_list->notify_cb = cb;
diff --git a/util/vfio-helpers.c b/util/vfio-helpers.c
index 00a80431a0..b037d5faa5 100644
--- a/util/vfio-helpers.c
+++ b/util/vfio-helpers.c
@@ -279,8 +279,8 @@ static void collect_usable_iova_ranges(QEMUVFIOState *s, void *buf)
     s->nb_iova_ranges = cap_iova_range->nr_iovas;
     if (s->nb_iova_ranges > 1) {
         s->usable_iova_ranges =
-            g_realloc(s->usable_iova_ranges,
-                      s->nb_iova_ranges * sizeof(struct IOVARange));
+            g_renew(struct IOVARange, s->usable_iova_ranges,
+                    s->nb_iova_ranges);
     }
 
     for (i = 0; i < s->nb_iova_ranges; i++) {
-- 
2.35.1

Re: [PATCH 3/3] Use g_new() & friends where that makes obvious sense

[Peter Maydell]

On Mon, 14 Mar 2022 at 16:01, Markus Armbruster <armbru@redhat.com> wrote:
>
> g_new(T, n) is neater than g_malloc(sizeof(T) * n).  It's also safer,
> for two reasons.  One, it catches multiplication overflowing size_t.
> Two, it returns T * rather than void *, which lets the compiler catch
> more type errors.
>
> This commit only touches allocations with size arguments of the form
> sizeof(T).
>
> Patch created mechanically with:
>
>     $ spatch --in-place --sp-file scripts/coccinelle/use-g_new-etc.cocci \
>              --macro-file scripts/cocci-macro-file.h FILES...
>
> Signed-off-by: Markus Armbruster <armbru@redhat.com>
> ---

>  104 files changed, 197 insertions(+), 202 deletions(-)

I'm not going to say you must split this patch up. I'm just going to
say that I personally am not looking at it, because it's too big
for me to deal with.

-- PMM

Re: [PATCH 3/3] Use g_new() & friends where that makes obvious sense

[Markus Armbruster]

Peter Maydell <peter.maydell@linaro.org> writes:

> On Mon, 14 Mar 2022 at 16:01, Markus Armbruster <armbru@redhat.com> wrote:
>>
>> g_new(T, n) is neater than g_malloc(sizeof(T) * n).  It's also safer,
>> for two reasons.  One, it catches multiplication overflowing size_t.
>> Two, it returns T * rather than void *, which lets the compiler catch
>> more type errors.
>>
>> This commit only touches allocations with size arguments of the form
>> sizeof(T).
>>
>> Patch created mechanically with:
>>
>>     $ spatch --in-place --sp-file scripts/coccinelle/use-g_new-etc.cocci \
>>              --macro-file scripts/cocci-macro-file.h FILES...
>>
>> Signed-off-by: Markus Armbruster <armbru@redhat.com>
>> ---
>
>>  104 files changed, 197 insertions(+), 202 deletions(-)
>
> I'm not going to say you must split this patch up. I'm just going to
> say that I personally am not looking at it, because it's too big
> for me to deal with.

As with all big but trivial Coccinelle patches, reviewing the Coccinelle
script and a reasonably representative sample of its output is almost
certainly a better use of reviewer time than attempting to get all the
patches reviewed.  They are mind-numbingly dull!

For what it's worth, we've used this script several times before.  Last
in commit bdd81addf4.

Re: [PATCH 3/3] Use g_new() & friends where that makes obvious sense

[Daniel P. Berrangé]

On Mon, Mar 14, 2022 at 05:52:32PM +0100, Markus Armbruster wrote:
> Peter Maydell <peter.maydell@linaro.org> writes:
> 
> > On Mon, 14 Mar 2022 at 16:01, Markus Armbruster <armbru@redhat.com> wrote:
> >>
> >> g_new(T, n) is neater than g_malloc(sizeof(T) * n).  It's also safer,
> >> for two reasons.  One, it catches multiplication overflowing size_t.
> >> Two, it returns T * rather than void *, which lets the compiler catch
> >> more type errors.
> >>
> >> This commit only touches allocations with size arguments of the form
> >> sizeof(T).
> >>
> >> Patch created mechanically with:
> >>
> >>     $ spatch --in-place --sp-file scripts/coccinelle/use-g_new-etc.cocci \
> >>              --macro-file scripts/cocci-macro-file.h FILES...
> >>
> >> Signed-off-by: Markus Armbruster <armbru@redhat.com>
> >> ---
> >
> >>  104 files changed, 197 insertions(+), 202 deletions(-)
> >
> > I'm not going to say you must split this patch up. I'm just going to
> > say that I personally am not looking at it, because it's too big
> > for me to deal with.
> 
> As with all big but trivial Coccinelle patches, reviewing the Coccinelle
> script and a reasonably representative sample of its output is almost
> certainly a better use of reviewer time than attempting to get all the
> patches reviewed.  They are mind-numbingly dull!
> 
> For what it's worth, we've used this script several times before.  Last
> in commit bdd81addf4.

This Coccinelle is simple enough to understand, that I'd suggest that
once we merge the Coccinelle script itself, then for ongoing usage,
its output can be considered effectively pre-reviewed.

The reviewer can just re-run the Coccinelle script themselves to prove
it has the same output as the submitter claims, to validate no manual
changes are hidden in the middle of the automated patch.

Regards,
Daniel
-- 
|: https://berrange.com      -o-    https://www.flickr.com/photos/dberrange :|
|: https://libvirt.org         -o-            https://fstop138.berrange.com :|
|: https://entangle-photo.org    -o-    https://www.instagram.com/dberrange :|

Re: [PATCH 3/3] Use g_new() & friends where that makes obvious sense

[Cédric Le Goater]

On 3/14/22 17:01, Markus Armbruster wrote:
> g_new(T, n) is neater than g_malloc(sizeof(T) * n).  It's also safer,
> for two reasons.  One, it catches multiplication overflowing size_t.
> Two, it returns T * rather than void *, which lets the compiler catch
> more type errors.
> 
> This commit only touches allocations with size arguments of the form
> sizeof(T).
> 
> Patch created mechanically with:
> 
>      $ spatch --in-place --sp-file scripts/coccinelle/use-g_new-etc.cocci \
> 	     --macro-file scripts/cocci-macro-file.h FILES...
> 
> Signed-off-by: Markus Armbruster <armbru@redhat.com>
> ---
>   include/qemu/timer.h                     |  2 +-
>   accel/kvm/kvm-all.c                      |  6 ++--
>   accel/tcg/tcg-accel-ops-mttcg.c          |  2 +-
>   accel/tcg/tcg-accel-ops-rr.c             |  4 +--
>   audio/audio.c                            |  4 +--
>   audio/audio_legacy.c                     |  6 ++--
>   audio/dsoundaudio.c                      |  2 +-
>   audio/jackaudio.c                        |  6 ++--
>   audio/paaudio.c                          |  4 +--
>   backends/cryptodev.c                     |  2 +-
>   contrib/vhost-user-gpu/vhost-user-gpu.c  |  2 +-
>   cpus-common.c                            |  4 +--
>   dump/dump.c                              |  2 +-
>   hw/acpi/hmat.c                           |  2 +-
>   hw/audio/intel-hda.c                     |  2 +-
>   hw/char/parallel.c                       |  2 +-
>   hw/char/riscv_htif.c                     |  2 +-
>   hw/char/virtio-serial-bus.c              |  6 ++--
>   hw/core/irq.c                            |  2 +-
>   hw/core/reset.c                          |  2 +-
>   hw/display/pxa2xx_lcd.c                  |  2 +-
>   hw/display/tc6393xb.c                    |  2 +-
>   hw/display/virtio-gpu.c                  |  4 +--
>   hw/display/xenfb.c                       |  4 +--
>   hw/dma/rc4030.c                          |  4 +--
>   hw/i2c/core.c                            |  4 +--
>   hw/i2c/i2c_mux_pca954x.c                 |  2 +-
>   hw/i386/amd_iommu.c                      |  4 +--
>   hw/i386/intel_iommu.c                    |  2 +-
>   hw/i386/xen/xen-hvm.c                    | 10 +++---
>   hw/i386/xen/xen-mapcache.c               | 14 ++++----
>   hw/input/lasips2.c                       |  2 +-
>   hw/input/pckbd.c                         |  2 +-
>   hw/input/ps2.c                           |  4 +--
>   hw/input/pxa2xx_keypad.c                 |  2 +-
>   hw/input/tsc2005.c                       |  3 +-
>   hw/intc/riscv_aclint.c                   |  6 ++--
>   hw/intc/xics.c                           |  2 +-
>   hw/m68k/virt.c                           |  2 +-
>   hw/mips/mipssim.c                        |  2 +-
>   hw/misc/applesmc.c                       |  2 +-
>   hw/misc/imx6_src.c                       |  2 +-
>   hw/misc/ivshmem.c                        |  4 +--
>   hw/net/virtio-net.c                      |  4 +--
>   hw/nvme/ns.c                             |  2 +-
>   hw/pci-host/pnv_phb3.c                   |  2 +-
>   hw/pci-host/pnv_phb4.c                   |  2 +-
>   hw/pci/pcie_sriov.c                      |  2 +-
>   hw/ppc/e500.c                            |  2 +-
>   hw/ppc/ppc.c                             |  8 ++---
>   hw/ppc/ppc405_boards.c                   |  4 +--
>   hw/ppc/ppc405_uc.c                       | 18 +++++-----
>   hw/ppc/ppc4xx_devs.c                     |  2 +-
>   hw/ppc/ppc_booke.c                       |  4 +--
>   hw/ppc/spapr.c                           |  2 +-
>   hw/ppc/spapr_events.c                    |  2 +-
>   hw/ppc/spapr_hcall.c                     |  2 +-
>   hw/ppc/spapr_numa.c                      |  3 +-
>   hw/rdma/vmw/pvrdma_dev_ring.c            |  2 +-
>   hw/rdma/vmw/pvrdma_qp_ops.c              |  6 ++--
>   hw/sh4/r2d.c                             |  4 +--
>   hw/sh4/sh7750.c                          |  2 +-
>   hw/sparc/leon3.c                         |  2 +-
>   hw/sparc64/sparc64.c                     |  4 +--
>   hw/timer/arm_timer.c                     |  2 +-
>   hw/timer/slavio_timer.c                  |  2 +-
>   hw/vfio/pci.c                            |  4 +--
>   hw/vfio/platform.c                       |  4 +--
>   hw/virtio/virtio-crypto.c                |  2 +-
>   hw/virtio/virtio-iommu.c                 |  2 +-
>   hw/virtio/virtio.c                       |  5 ++-
>   hw/xtensa/xtfpga.c                       |  2 +-
>   linux-user/syscall.c                     |  2 +-
>   migration/dirtyrate.c                    |  4 +--
>   migration/multifd-zlib.c                 |  4 +--
>   migration/ram.c                          |  2 +-
>   monitor/misc.c                           |  2 +-
>   monitor/qmp-cmds.c                       |  2 +-
>   qga/commands-win32.c                     |  8 ++---
>   qga/commands.c                           |  2 +-
>   qom/qom-qmp-cmds.c                       |  2 +-
>   replay/replay-char.c                     |  4 +--
>   replay/replay-events.c                   | 10 +++---
>   scripts/coverity-scan/model.c            |  2 +-
>   semihosting/config.c                     |  2 +-
>   softmmu/bootdevice.c                     |  4 +--
>   softmmu/dma-helpers.c                    |  4 +--
>   softmmu/memory_mapping.c                 |  2 +-
>   target/i386/cpu-sysemu.c                 |  2 +-
>   target/i386/hax/hax-accel-ops.c          |  4 +--
>   target/i386/nvmm/nvmm-accel-ops.c        |  4 +--
>   target/i386/whpx/whpx-accel-ops.c        |  4 +--
>   target/i386/whpx/whpx-all.c              |  2 +-
>   target/s390x/cpu-sysemu.c                |  2 +-
>   tests/unit/test-hbitmap.c                |  2 +-
>   tests/unit/test-qmp-cmds.c               | 14 ++++----
>   tests/unit/test-qobject-output-visitor.c |  2 +-
>   tests/unit/test-vmstate.c                | 42 ++++++++++++------------
>   ui/vnc-enc-tight.c                       |  2 +-
>   util/envlist.c                           |  2 +-
>   util/hbitmap.c                           |  2 +-
>   util/main-loop.c                         |  2 +-
>   util/qemu-timer.c                        |  2 +-
>   util/vfio-helpers.c                      |  4 +--
>   104 files changed, 197 insertions(+), 202 deletions(-)

PPC part:
  Reviewed-by: Cédric Le Goater <clg@kaod.org>

Thanks,

C.

Re: [PATCH 3/3] Use g_new() & friends where that makes obvious sense

[Alex Bennée]

Markus Armbruster <armbru@redhat.com> writes:

> g_new(T, n) is neater than g_malloc(sizeof(T) * n).  It's also safer,
> for two reasons.  One, it catches multiplication overflowing size_t.
> Two, it returns T * rather than void *, which lets the compiler catch
> more type errors.
>
> This commit only touches allocations with size arguments of the form
> sizeof(T).
>
> Patch created mechanically with:
>
>     $ spatch --in-place --sp-file scripts/coccinelle/use-g_new-etc.cocci \
> 	     --macro-file scripts/cocci-macro-file.h FILES...
>
> Signed-off-by: Markus Armbruster <armbru@redhat.com>
<snip>
> --- a/audio/jackaudio.c
> +++ b/audio/jackaudio.c
> @@ -97,9 +97,9 @@ static void qjack_buffer_create(QJackBuffer *buffer, int channels, int frames)
>      buffer->used     = 0;
>      buffer->rptr     = 0;
>      buffer->wptr     = 0;
> -    buffer->data     = g_malloc(channels * sizeof(float *));
> +    buffer->data     = g_new(float *, channels);
>      for (int i = 0; i < channels; ++i) {
> -        buffer->data[i] = g_malloc(frames * sizeof(float));
> +        buffer->data[i] = g_new(float, frames);

Are these actually buffers of pointers to floats? I guess I leave that
to the JACK experts...

>      }
>  }
>  
> @@ -453,7 +453,7 @@ static int qjack_client_init(QJackClient *c)
>      jack_on_shutdown(c->client, qjack_shutdown, c);
>  
>      /* allocate and register the ports */
> -    c->port = g_malloc(sizeof(jack_port_t *) * c->nchannels);
> +    c->port = g_new(jack_port_t *, c->nchannels);
>      for (int i = 0; i < c->nchannels; ++i) {

I guess JACK just likes double indirection...

>  
>          char port_name[16];
<snip>
> --- a/hw/pci/pcie_sriov.c
> +++ b/hw/pci/pcie_sriov.c
> @@ -177,7 +177,7 @@ static void register_vfs(PCIDevice *dev)
>      assert(sriov_cap > 0);
>      num_vfs = pci_get_word(dev->config + sriov_cap + PCI_SRIOV_NUM_VF);
>  
> -    dev->exp.sriov_pf.vf = g_malloc(sizeof(PCIDevice *) * num_vfs);
> +    dev->exp.sriov_pf.vf = g_new(PCIDevice *, num_vfs);
>      assert(dev->exp.sriov_pf.vf);

So what I find confusing about the conversion of sizeof(foo *) is that
while the internal sizeof in g_new is unaffected I think the casting
ends up as

 foo **

but I guess the compiler would have complained so maybe I don't
understand the magic enough.

<snip>
> index 42130667a7..598e6adc5e 100644
> --- a/hw/rdma/vmw/pvrdma_dev_ring.c
> +++ b/hw/rdma/vmw/pvrdma_dev_ring.c
> @@ -41,7 +41,7 @@ int pvrdma_ring_init(PvrdmaRing *ring, const char *name, PCIDevice *dev,
>      qatomic_set(&ring->ring_state->cons_head, 0);
>      */
>      ring->npages = npages;
> -    ring->pages = g_malloc0(npages * sizeof(void *));
> +    ring->pages = g_new0(void *, npages);

At least here ring->pages agrees about void ** being the result.

<snip>

So other than my queries about the sizeof(foo *) which I'd like someone
to assuage me of my concerns it looks like the script has done a
thorough mechanical job as all good scripts should ;-)

Reviewed-by: Alex Bennée <alex.bennee@linaro.org>

-- 
Alex Bennée

Re: [PATCH 3/3] Use g_new() & friends where that makes obvious sense

[Christian Schoenebeck]

On Montag, 14. März 2022 20:48:47 CET Alex Bennée wrote:
> Markus Armbruster <armbru@redhat.com> writes:
> > g_new(T, n) is neater than g_malloc(sizeof(T) * n).  It's also safer,
> > for two reasons.  One, it catches multiplication overflowing size_t.
> > Two, it returns T * rather than void *, which lets the compiler catch
> > more type errors.
> > 
> > This commit only touches allocations with size arguments of the form
> > sizeof(T).
> > 
> > Patch created mechanically with:
> >     $ spatch --in-place --sp-file scripts/coccinelle/use-g_new-etc.cocci \
> >     
> > 	     --macro-file scripts/cocci-macro-file.h FILES...
> > 
> > Signed-off-by: Markus Armbruster <armbru@redhat.com>
> 
> <snip>
> 
> > --- a/audio/jackaudio.c
> > +++ b/audio/jackaudio.c
> > @@ -97,9 +97,9 @@ static void qjack_buffer_create(QJackBuffer *buffer, int
> > channels, int frames)> 
> >      buffer->used     = 0;
> >      buffer->rptr     = 0;
> >      buffer->wptr     = 0;
> > 
> > -    buffer->data     = g_malloc(channels * sizeof(float *));
> > +    buffer->data     = g_new(float *, channels);
> > 
> >      for (int i = 0; i < channels; ++i) {
> > 
> > -        buffer->data[i] = g_malloc(frames * sizeof(float));
> > +        buffer->data[i] = g_new(float, frames);
> 
> Are these actually buffers of pointers to floats? I guess I leave that
> to the JACK experts...

That's correct. JACK does not use interleaved audio format, it uses separate 
buffers for each audio channel. For the audio stuff of this patch:

Reviewed-by: Christian Schoenebeck <qemu_oss@crudebyte.com>

Best regards,
Christian Schoenebeck

Re: [PATCH 3/3] Use g_new() & friends where that makes obvious sense

[Markus Armbruster]

Alex Bennée <alex.bennee@linaro.org> writes:

> Markus Armbruster <armbru@redhat.com> writes:
>
>> g_new(T, n) is neater than g_malloc(sizeof(T) * n).  It's also safer,
>> for two reasons.  One, it catches multiplication overflowing size_t.
>> Two, it returns T * rather than void *, which lets the compiler catch
>> more type errors.
>>
>> This commit only touches allocations with size arguments of the form
>> sizeof(T).
>>
>> Patch created mechanically with:
>>
>>     $ spatch --in-place --sp-file scripts/coccinelle/use-g_new-etc.cocci \
>> 	     --macro-file scripts/cocci-macro-file.h FILES...
>>
>> Signed-off-by: Markus Armbruster <armbru@redhat.com>

[...]

>> --- a/hw/pci/pcie_sriov.c
>> +++ b/hw/pci/pcie_sriov.c
>> @@ -177,7 +177,7 @@ static void register_vfs(PCIDevice *dev)
>>      assert(sriov_cap > 0);
>>      num_vfs = pci_get_word(dev->config + sriov_cap + PCI_SRIOV_NUM_VF);
>>  
>> -    dev->exp.sriov_pf.vf = g_malloc(sizeof(PCIDevice *) * num_vfs);
>> +    dev->exp.sriov_pf.vf = g_new(PCIDevice *, num_vfs);
>>      assert(dev->exp.sriov_pf.vf);
>
> So what I find confusing about the conversion of sizeof(foo *) is that
> while the internal sizeof in g_new is unaffected I think the casting
> ends up as
>
>  foo **

Yes.  g_malloc(...) returns void *.  g_new(T, ...) returns T *.

> but I guess the compiler would have complained so maybe I don't
> understand the magic enough.

It doesn't complain here because dev->exp.sriov_pf.vf is of type
PCIDevice **:

    struct PCIESriovPF {
        uint16_t num_vfs;   /* Number of virtual functions created */
        uint8_t vf_bar_type[PCI_NUM_REGIONS];   /* Store type for each VF bar */
        const char *vfname; /* Reference to the device type used for the VFs */
        PCIDevice **vf;     /* Pointer to an array of num_vfs VF devices */
    };

It does complain when the types don't match, as shown in PATCH 2.

> <snip>
>> index 42130667a7..598e6adc5e 100644
>> --- a/hw/rdma/vmw/pvrdma_dev_ring.c
>> +++ b/hw/rdma/vmw/pvrdma_dev_ring.c
>> @@ -41,7 +41,7 @@ int pvrdma_ring_init(PvrdmaRing *ring, const char *name, PCIDevice *dev,
>>      qatomic_set(&ring->ring_state->cons_head, 0);
>>      */
>>      ring->npages = npages;
>> -    ring->pages = g_malloc0(npages * sizeof(void *));
>> +    ring->pages = g_new0(void *, npages);
>
> At least here ring->pages agrees about void ** being the result.
>
> <snip>
>
> So other than my queries about the sizeof(foo *) which I'd like someone
> to assuage me of my concerns it looks like the script has done a
> thorough mechanical job as all good scripts should ;-)
>
> Reviewed-by: Alex Bennée <alex.bennee@linaro.org>

Thanks!

Re: [PATCH 3/3] Use g_new() & friends where that makes obvious sense

[Alex Bennée]

Markus Armbruster <armbru@redhat.com> writes:

> g_new(T, n) is neater than g_malloc(sizeof(T) * n).  It's also safer,
> for two reasons.  One, it catches multiplication overflowing size_t.
> Two, it returns T * rather than void *, which lets the compiler catch
> more type errors.
>
<snip>
> diff --git a/semihosting/config.c b/semihosting/config.c
> index 137171b717..6d48ec9566 100644
> --- a/semihosting/config.c
> +++ b/semihosting/config.c
> @@ -98,7 +98,7 @@ static int add_semihosting_arg(void *opaque,
>      if (strcmp(name, "arg") == 0) {
>          s->argc++;
>          /* one extra element as g_strjoinv() expects NULL-terminated array */
> -        s->argv = g_realloc(s->argv, (s->argc + 1) * sizeof(void *));
> +        s->argv = g_renew(void *, s->argv, s->argc + 1);

This did indeed break CI because s->argv is an array of *char:

../semihosting/config.c:101:17: error: assignment to ‘const char **’ from incompatible pointer type ‘void **’ [-Werror=incompatible-pointer-types]
  101 |         s->argv = g_renew(void *, s->argv, s->argc + 1);
      |                 ^
cc1: all warnings being treated as errors

So it did the job of type checking but failed to build ;-)


-- 
Alex Bennée

Re: [PATCH 3/3] Use g_new() & friends where that makes obvious sense

[Markus Armbruster]

Alex Bennée <alex.bennee@linaro.org> writes:

> Markus Armbruster <armbru@redhat.com> writes:
>
>> g_new(T, n) is neater than g_malloc(sizeof(T) * n).  It's also safer,
>> for two reasons.  One, it catches multiplication overflowing size_t.
>> Two, it returns T * rather than void *, which lets the compiler catch
>> more type errors.
>>
> <snip>
>> diff --git a/semihosting/config.c b/semihosting/config.c
>> index 137171b717..6d48ec9566 100644
>> --- a/semihosting/config.c
>> +++ b/semihosting/config.c
>> @@ -98,7 +98,7 @@ static int add_semihosting_arg(void *opaque,
>>      if (strcmp(name, "arg") == 0) {
>>          s->argc++;
>>          /* one extra element as g_strjoinv() expects NULL-terminated array */
>> -        s->argv = g_realloc(s->argv, (s->argc + 1) * sizeof(void *));
>> +        s->argv = g_renew(void *, s->argv, s->argc + 1);
>
> This did indeed break CI because s->argv is an array of *char:
>
> ../semihosting/config.c:101:17: error: assignment to ‘const char **’ from incompatible pointer type ‘void **’ [-Werror=incompatible-pointer-types]
>   101 |         s->argv = g_renew(void *, s->argv, s->argc + 1);
>       |                 ^
> cc1: all warnings being treated as errors
>
> So it did the job of type checking but failed to build ;-)

You found a hole in my compile testing, thanks!

I got confused about the configuration of my build trees.  Catching such
mistakes is what CI is for :)

Re: [PATCH 3/3] Use g_new() & friends where that makes obvious sense

[Philippe Mathieu-Daudé]

On 15/3/22 14:59, Markus Armbruster wrote:
> Alex Bennée <alex.bennee@linaro.org> writes:
> 
>> Markus Armbruster <armbru@redhat.com> writes:
>>
>>> g_new(T, n) is neater than g_malloc(sizeof(T) * n).  It's also safer,
>>> for two reasons.  One, it catches multiplication overflowing size_t.
>>> Two, it returns T * rather than void *, which lets the compiler catch
>>> more type errors.
>>>
>> <snip>
>>> diff --git a/semihosting/config.c b/semihosting/config.c
>>> index 137171b717..6d48ec9566 100644
>>> --- a/semihosting/config.c
>>> +++ b/semihosting/config.c
>>> @@ -98,7 +98,7 @@ static int add_semihosting_arg(void *opaque,
>>>       if (strcmp(name, "arg") == 0) {
>>>           s->argc++;
>>>           /* one extra element as g_strjoinv() expects NULL-terminated array */
>>> -        s->argv = g_realloc(s->argv, (s->argc + 1) * sizeof(void *));
>>> +        s->argv = g_renew(void *, s->argv, s->argc + 1);
>>
>> This did indeed break CI because s->argv is an array of *char:
>>
>> ../semihosting/config.c:101:17: error: assignment to ‘const char **’ from incompatible pointer type ‘void **’ [-Werror=incompatible-pointer-types]
>>    101 |         s->argv = g_renew(void *, s->argv, s->argc + 1);
>>        |                 ^
>> cc1: all warnings being treated as errors
>>
>> So it did the job of type checking but failed to build ;-)
> 
> You found a hole in my compile testing, thanks!
> 
> I got confused about the configuration of my build trees.  Catching such
> mistakes is what CI is for :)

FYI Alex fixed this here:
https://lore.kernel.org/qemu-devel/20220315121251.2280317-8-alex.bennee@linaro.org/

So your series could go on top (modulo the Coverity change).

Re: [PATCH 3/3] Use g_new() & friends where that makes obvious sense

[Markus Armbruster]

Philippe Mathieu-Daudé <philippe.mathieu.daude@gmail.com> writes:

> On 15/3/22 14:59, Markus Armbruster wrote:
>> Alex Bennée <alex.bennee@linaro.org> writes:
>> 
>>> Markus Armbruster <armbru@redhat.com> writes:
>>>
>>>> g_new(T, n) is neater than g_malloc(sizeof(T) * n).  It's also safer,
>>>> for two reasons.  One, it catches multiplication overflowing size_t.
>>>> Two, it returns T * rather than void *, which lets the compiler catch
>>>> more type errors.
>>>>
>>> <snip>
>>>> diff --git a/semihosting/config.c b/semihosting/config.c
>>>> index 137171b717..6d48ec9566 100644
>>>> --- a/semihosting/config.c
>>>> +++ b/semihosting/config.c
>>>> @@ -98,7 +98,7 @@ static int add_semihosting_arg(void *opaque,
>>>>       if (strcmp(name, "arg") == 0) {
>>>>           s->argc++;
>>>>           /* one extra element as g_strjoinv() expects NULL-terminated array */
>>>> -        s->argv = g_realloc(s->argv, (s->argc + 1) * sizeof(void *));
>>>> +        s->argv = g_renew(void *, s->argv, s->argc + 1);
>>>
>>> This did indeed break CI because s->argv is an array of *char:
>>>
>>> ../semihosting/config.c:101:17: error: assignment to ‘const char **’ from incompatible pointer type ‘void **’ [-Werror=incompatible-pointer-types]
>>>    101 |         s->argv = g_renew(void *, s->argv, s->argc + 1);
>>>        |                 ^
>>> cc1: all warnings being treated as errors
>>>
>>> So it did the job of type checking but failed to build ;-)
>>
>> You found a hole in my compile testing, thanks!
>>
>> I got confused about the configuration of my build trees.  Catching such
>> mistakes is what CI is for :)
>
> FYI Alex fixed this here:
> https://lore.kernel.org/qemu-devel/20220315121251.2280317-8-alex.bennee@linaro.org/
>
> So your series could go on top (modulo the Coverity change).

I dropped this hunk in v2.

Whether my v2 or Alex's series goes in first doesn't matter.

Re: [PATCH 3/3] Use g_new() & friends where that makes obvious sense

[Alex Bennée]

Markus Armbruster <armbru@redhat.com> writes:

> Philippe Mathieu-Daudé <philippe.mathieu.daude@gmail.com> writes:
>
>> On 15/3/22 14:59, Markus Armbruster wrote:
>>> Alex Bennée <alex.bennee@linaro.org> writes:
>>> 
>>>> Markus Armbruster <armbru@redhat.com> writes:
>>>>
>>>>> g_new(T, n) is neater than g_malloc(sizeof(T) * n).  It's also safer,
>>>>> for two reasons.  One, it catches multiplication overflowing size_t.
>>>>> Two, it returns T * rather than void *, which lets the compiler catch
>>>>> more type errors.
>>>>>
>>>> <snip>
>>>>> diff --git a/semihosting/config.c b/semihosting/config.c
>>>>> index 137171b717..6d48ec9566 100644
>>>>> --- a/semihosting/config.c
>>>>> +++ b/semihosting/config.c
>>>>> @@ -98,7 +98,7 @@ static int add_semihosting_arg(void *opaque,
>>>>>       if (strcmp(name, "arg") == 0) {
>>>>>           s->argc++;
>>>>>           /* one extra element as g_strjoinv() expects NULL-terminated array */
>>>>> -        s->argv = g_realloc(s->argv, (s->argc + 1) * sizeof(void *));
>>>>> +        s->argv = g_renew(void *, s->argv, s->argc + 1);
>>>>
>>>> This did indeed break CI because s->argv is an array of *char:
>>>>
>>>> ../semihosting/config.c:101:17: error: assignment to ‘const char **’ from incompatible pointer type ‘void **’ [-Werror=incompatible-pointer-types]
>>>>    101 |         s->argv = g_renew(void *, s->argv, s->argc + 1);
>>>>        |                 ^
>>>> cc1: all warnings being treated as errors
>>>>
>>>> So it did the job of type checking but failed to build ;-)
>>>
>>> You found a hole in my compile testing, thanks!
>>>
>>> I got confused about the configuration of my build trees.  Catching such
>>> mistakes is what CI is for :)
>>
>> FYI Alex fixed this here:
>> https://lore.kernel.org/qemu-devel/20220315121251.2280317-8-alex.bennee@linaro.org/
>>
>> So your series could go on top (modulo the Coverity change).
>
> I dropped this hunk in v2.
>
> Whether my v2 or Alex's series goes in first doesn't matter.

That's great. Thanks for finding the ugliness in the first place ;-)

-- 
Alex Bennée

Re: [PATCH 3/3] Use g_new() & friends where that makes obvious sense

[Eric Blake]

On Mon, Mar 14, 2022 at 05:01:08PM +0100, Markus Armbruster wrote:
> g_new(T, n) is neater than g_malloc(sizeof(T) * n).  It's also safer,
> for two reasons.  One, it catches multiplication overflowing size_t.
> Two, it returns T * rather than void *, which lets the compiler catch
> more type errors.
> 
> This commit only touches allocations with size arguments of the form
> sizeof(T).
> 
> Patch created mechanically with:
> 
>     $ spatch --in-place --sp-file scripts/coccinelle/use-g_new-etc.cocci \
> 	     --macro-file scripts/cocci-macro-file.h FILES...
> 
> Signed-off-by: Markus Armbruster <armbru@redhat.com>
> ---

I agree that this is mechanical, but...

<snip>
>  qga/commands-win32.c                     |  8 ++---
>  qga/commands.c                           |  2 +-
>  qom/qom-qmp-cmds.c                       |  2 +-
>  replay/replay-char.c                     |  4 +--
>  replay/replay-events.c                   | 10 +++---
>  scripts/coverity-scan/model.c            |  2 +-

...are we sure we want to touch this particular file?

> diff --git a/scripts/coverity-scan/model.c b/scripts/coverity-scan/model.c
> index 9d4fba53d9..30bea672e1 100644
> --- a/scripts/coverity-scan/model.c
> +++ b/scripts/coverity-scan/model.c
> @@ -356,7 +356,7 @@ int g_poll (GPollFD *fds, unsigned nfds, int timeout)
>  typedef struct _GIOChannel GIOChannel;
>  GIOChannel *g_io_channel_unix_new(int fd)
>  {
> -    GIOChannel *c = g_malloc0(sizeof(GIOChannel));
> +    GIOChannel *c = g_new0(GIOChannel, 1);
>      __coverity_escape__(fd);
>      return c;
>  }

Our model has a definition of g_malloc0(), but I'm not sure whether
Coverity picks up the macro g_new0() in the same manner.

-- 
Eric Blake, Principal Software Engineer
Red Hat, Inc.           +1-919-301-3266
Virtualization:  qemu.org | libvirt.org

Re: [PATCH 3/3] Use g_new() & friends where that makes obvious sense

[Markus Armbruster]

Eric Blake <eblake@redhat.com> writes:

> On Mon, Mar 14, 2022 at 05:01:08PM +0100, Markus Armbruster wrote:
>> g_new(T, n) is neater than g_malloc(sizeof(T) * n).  It's also safer,
>> for two reasons.  One, it catches multiplication overflowing size_t.
>> Two, it returns T * rather than void *, which lets the compiler catch
>> more type errors.
>> 
>> This commit only touches allocations with size arguments of the form
>> sizeof(T).
>> 
>> Patch created mechanically with:
>> 
>>     $ spatch --in-place --sp-file scripts/coccinelle/use-g_new-etc.cocci \
>> 	     --macro-file scripts/cocci-macro-file.h FILES...
>> 
>> Signed-off-by: Markus Armbruster <armbru@redhat.com>
>> ---
>
> I agree that this is mechanical, but...
>
> <snip>
>>  qga/commands-win32.c                     |  8 ++---
>>  qga/commands.c                           |  2 +-
>>  qom/qom-qmp-cmds.c                       |  2 +-
>>  replay/replay-char.c                     |  4 +--
>>  replay/replay-events.c                   | 10 +++---
>>  scripts/coverity-scan/model.c            |  2 +-
>
> ...are we sure we want to touch this particular file?

Good catch!

>> diff --git a/scripts/coverity-scan/model.c b/scripts/coverity-scan/model.c
>> index 9d4fba53d9..30bea672e1 100644
>> --- a/scripts/coverity-scan/model.c
>> +++ b/scripts/coverity-scan/model.c
>> @@ -356,7 +356,7 @@ int g_poll (GPollFD *fds, unsigned nfds, int timeout)
>>  typedef struct _GIOChannel GIOChannel;
>>  GIOChannel *g_io_channel_unix_new(int fd)
>>  {
>> -    GIOChannel *c = g_malloc0(sizeof(GIOChannel));
>> +    GIOChannel *c = g_new0(GIOChannel, 1);
>>      __coverity_escape__(fd);
>>      return c;
>>  }
>
> Our model has a definition of g_malloc0(), but I'm not sure whether
> Coverity picks up the macro g_new0() in the same manner.

I believe it does, by parsing the macro definition from the header.

Regardless, I'd prefer to keep model.c self-contained.  I'll drop this
hunk.

Thanks!

Re: [PATCH 3/3] Use g_new() & friends where that makes obvious sense

[Dr. David Alan Gilbert]

* Markus Armbruster (armbru@redhat.com) wrote:
> g_new(T, n) is neater than g_malloc(sizeof(T) * n).  It's also safer,
> for two reasons.  One, it catches multiplication overflowing size_t.
> Two, it returns T * rather than void *, which lets the compiler catch
> more type errors.
> 
> This commit only touches allocations with size arguments of the form
> sizeof(T).
> 
> Patch created mechanically with:
> 
>     $ spatch --in-place --sp-file scripts/coccinelle/use-g_new-etc.cocci \
> 	     --macro-file scripts/cocci-macro-file.h FILES...
> 
> Signed-off-by: Markus Armbruster <armbru@redhat.com>

Just a small patch then...

> diff --git a/migration/dirtyrate.c b/migration/dirtyrate.c
> index d65e744af9..aace12a787 100644
> --- a/migration/dirtyrate.c
> +++ b/migration/dirtyrate.c
> @@ -91,7 +91,7 @@ static struct DirtyRateInfo *query_dirty_rate_info(void)
>  {
>      int i;
>      int64_t dirty_rate = DirtyStat.dirty_rate;
> -    struct DirtyRateInfo *info = g_malloc0(sizeof(DirtyRateInfo));
> +    struct DirtyRateInfo *info = g_new0(DirtyRateInfo, 1);
>      DirtyRateVcpuList *head = NULL, **tail = &head;
>  
>      info->status = CalculatingState;
> @@ -112,7 +112,7 @@ static struct DirtyRateInfo *query_dirty_rate_info(void)
>              info->sample_pages = 0;
>              info->has_vcpu_dirty_rate = true;
>              for (i = 0; i < DirtyStat.dirty_ring.nvcpu; i++) {
> -                DirtyRateVcpu *rate = g_malloc0(sizeof(DirtyRateVcpu));
> +                DirtyRateVcpu *rate = g_new0(DirtyRateVcpu, 1);
>                  rate->id = DirtyStat.dirty_ring.rates[i].id;
>                  rate->dirty_rate = DirtyStat.dirty_ring.rates[i].dirty_rate;
>                  QAPI_LIST_APPEND(tail, rate);
> diff --git a/migration/multifd-zlib.c b/migration/multifd-zlib.c
> index aba1c88a0c..3a7ae44485 100644
> --- a/migration/multifd-zlib.c
> +++ b/migration/multifd-zlib.c
> @@ -43,7 +43,7 @@ struct zlib_data {
>   */
>  static int zlib_send_setup(MultiFDSendParams *p, Error **errp)
>  {
> -    struct zlib_data *z = g_malloc0(sizeof(struct zlib_data));
> +    struct zlib_data *z = g_new0(struct zlib_data, 1);
>      z_stream *zs = &z->zs;
>  
>      zs->zalloc = Z_NULL;
> @@ -164,7 +164,7 @@ static int zlib_send_prepare(MultiFDSendParams *p, Error **errp)
>   */
>  static int zlib_recv_setup(MultiFDRecvParams *p, Error **errp)
>  {
> -    struct zlib_data *z = g_malloc0(sizeof(struct zlib_data));
> +    struct zlib_data *z = g_new0(struct zlib_data, 1);
>      z_stream *zs = &z->zs;
>  
>      p->data = z;
> diff --git a/migration/ram.c b/migration/ram.c
> index 170e522a1f..3532f64ecb 100644
> --- a/migration/ram.c
> +++ b/migration/ram.c
> @@ -2059,7 +2059,7 @@ int ram_save_queue_pages(const char *rbname, ram_addr_t start, ram_addr_t len)
>      }
>  
>      struct RAMSrcPageRequest *new_entry =
> -        g_malloc0(sizeof(struct RAMSrcPageRequest));
> +        g_new0(struct RAMSrcPageRequest, 1);
>      new_entry->rb = ramblock;
>      new_entry->offset = start;
>      new_entry->len = len;

For migration:
Acked-by: Dr. David Alan Gilbert <dgilbert@redhat.com>
-- 
Dr. David Alan Gilbert / dgilbert@redhat.com / Manchester, UK

Re: [PATCH 0/3] Use g_new() & friends where that makes obvious

[Philippe Mathieu-Daudé]

On 14/3/22 17:01, Markus Armbruster wrote:
> g_new(T, n) is neater than g_malloc(sizeof(T) * n).  It's also safer,
> for two reasons.  One, it catches multiplication overflowing size_t.
> Two, it returns T * rather than void *, which lets the compiler catch
> more type errors.
> 
> This series only touches allocations with size arguments of the form
> sizeof(T).  It's mechanical, except for a tiny fix in PATCH 2.
> 
> PATCH 1 adds the Coccinelle script.
> 
> PATCH 2 cleans up the virtio-9p subsystem, and fixes a harmless typing
> error uncovered by the cleanup.
> 
> PATCH 3 cleans up everything else.  I started to split it up, but
> splitting is a lot of decisions, and I just can't see the value.
> 
> For instance, MAINTAINERS tells me to split for subsystem "virtio",
> patching
> 
>      hw/char/virtio-serial-bus.c
>      hw/display/virtio-gpu.c
>      hw/net/virtio-net.c
>      hw/virtio/virtio-crypto.c
>      hw/virtio/virtio-iommu.c
>      hw/virtio/virtio.c
> 
> But it also tells me to split for subsystem "Character devices",
> patching
> 
>      hw/char/parallel.c                       |  2 +-
>      hw/char/riscv_htif.c                     |  2 +-
>      hw/char/virtio-serial-bus.c              |  6 +-
> 
> and for subsystem "Network devices", patching
> 
>      hw/net/virtio-net.c
> 
> and for subsystem "virtio-gpu", patching
> 
>      hw/display/virtio-gpu.c
> 
> I guess I'd go with "virtio".  Six files down, 103 to go.  Thanks, but
> no thanks.
> 
> Since the transformation is local to a function call, dropping is
> completely safe.  We can deal with conflicts by dropping conflicting
> hunks, with "git-pull -s recursive -X ours".  Or drop entire files
> with conflicts.
> 
> If you want me to split off certain parts, please tell me exactly what
> you want split off, and I'll gladly do the splitting.  I don't mind
> the splitting part, I do mind the *thinking* part.
> 
> Markus Armbruster (3):
>    scripts/coccinelle: New use-g_new-etc.cocci
>    9pfs: Use g_new() & friends where that makes obvious sense
>    Use g_new() & friends where that makes obvious sense

Series:
Reviewed-by: Philippe Mathieu-Daudé <f4bug@amsat.org>