commit bb44619b06c0bef20b658ff532cf850c16362ae7
author Kevin Wolf <kwolf@redhat.com> Fri Mar 15 10:35:06 2013 +0100
committer Stefan Hajnoczi <stefanha@redhat.com> Fri Mar 15 16:07:49 2013 +0100
tree 7adc7541947c77e634077d8c1451da5aba62d633
parent 376609cc6c03c2ffc8c323d804d27f95346cac08

blockdev: Keep a copy of DriveInfo.serial

Pointing to a QemuOpts element is surprising and can lead to subtle
use-after-free errors when the QemuOpts is freed after all options are
parsed.

Signed-off-by: Kevin Wolf <kwolf@redhat.com>
Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com>

blockdev.c

diff --git a/blockdev.c b/blockdev.c
index d679174..acf1c32 100644
--- a/blockdev.c
+++ b/blockdev.c
@@ -191,6 +191,7 @@
     bdrv_delete(dinfo->bdrv);
     g_free(dinfo->id);
     QTAILQ_REMOVE(&drives, dinfo, next);
+    g_free(dinfo->serial);
     g_free(dinfo);
 }
 
@@ -566,7 +567,9 @@
     dinfo->trans = translation;
     dinfo->opts = opts;
     dinfo->refcount = 1;
-    dinfo->serial = serial;
+    if (serial != NULL) {
+        dinfo->serial = g_strdup(serial);
+    }
     QTAILQ_INSERT_TAIL(&drives, dinfo, next);
 
     bdrv_set_on_error(dinfo->bdrv, on_read_error, on_write_error);