[PATCH] hw/i386: fix NULL-dereference

[Dmitry Frolov]

If pcmc->pci_enabled is false, pcms->pcibus is NULL and is passed
to pc_nic_init() where it is being dereferenced.

Found making check with enabled sanitizers.

Signed-off-by: Dmitry Frolov <fro...@swemel.ru>
---
 hw/i386/pc_piix.c | 6 +++---
 1 file changed, 3 insertions(+), 3 deletions(-)

diff --git a/hw/i386/pc_piix.c b/hw/i386/pc_piix.c
index 2bf6865d40..2a92d2dbb7 100644
--- a/hw/i386/pc_piix.c
+++ b/hw/i386/pc_piix.c
@@ -313,9 +313,9 @@ static void pc_init1(MachineState *machine, const char 
*pci_type)
     /* init basic PC hardware */
     pc_basic_device_init(pcms, isa_bus, x86ms->gsi, x86ms->rtc,
                          !MACHINE_CLASS(pcmc)->no_floppy, 0x4);
-
-    pc_nic_init(pcmc, isa_bus, pcms->pcibus);
-
+    if (pcmc->pci_enabled) {
+        pc_nic_init(pcmc, isa_bus, pcms->pcibus);
+    }
 #ifdef CONFIG_IDE_ISA
     if (!pcmc->pci_enabled) {
         DriveInfo *hd[MAX_IDE_BUS * MAX_IDE_DEVS];
-- 
2.43.0