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[Qemu-devel] [PATCH] bootdevice: fix segment fault when booting guest wi


From: arei.gonglei
Subject: [Qemu-devel] [PATCH] bootdevice: fix segment fault when booting guest with '-kernel' and '-initrd'
Date: Fri, 27 Feb 2015 09:49:44 +0800

From: Gonglei <address@hidden>

Reproducer:

 $./qemu-system-x86_64 --enable-kvm -kernel /home/vmlinuz-2.6.32.12-0.7-default 
\
  -initrd /home/initrd-2.6.32.12-0.7-default -append \
 "root=/dev/ram rw console=ttyS0,115200" -dtb guest.dtb -vnc :10 --monitor 
stdio -smp 2
QEMU 2.2.50 monitor - type 'help' for more information
(qemu) Segmentation fault (core dumped)

Reported-by: Edivaldo de Araujo Pereira <address@hidden>
Signed-off-by: Gonglei <address@hidden>
---
 bootdevice.c | 13 +++++++++----
 1 file changed, 9 insertions(+), 4 deletions(-)

diff --git a/bootdevice.c b/bootdevice.c
index df9ab0e..673bfef 100644
--- a/bootdevice.c
+++ b/bootdevice.c
@@ -223,10 +223,15 @@ char *get_boot_devices_list(size_t *size, bool 
ignore_suffixes)
         }
 
         if (!ignore_suffixes) {
-            d = qdev_get_own_fw_dev_path_from_handler(i->dev->parent_bus, 
i->dev);
-            if (d) {
-                assert(!i->suffix);
-                suffix = d;
+            if (i->dev) {
+                d = qdev_get_own_fw_dev_path_from_handler(i->dev->parent_bus,
+                                                          i->dev);
+                if (d) {
+                    assert(!i->suffix);
+                    suffix = d;
+                } else {
+                    suffix = g_strdup(i->suffix);
+                }
             } else {
                 suffix = g_strdup(i->suffix);
             }
-- 
1.7.12.4





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