From: Charles Arnold <carnold@suse.com>
Date: Fri, 11 May 2012 16:57:54 +0000 (-0600)
Subject: qemu-img: Fix segmentation fault
X-Git-Tag: TizenStudio_2.0_p2.3.2~208^2~4088^2
X-Git-Url: http://review.tizen.org/git/?a=commitdiff_plain;h=fa170c148b12f40e803af5b442d33f16add345a4;p=sdk%2Femulator%2Fqemu.git

qemu-img: Fix segmentation fault

The following command generates a segmentation fault.
qemu-img convert -O vpc -o ? test test2
This is because the 'goto out;' statement calls qemu_progress_end
before qemu_progress_init is called resulting in a NULL pointer
invocation.

Signed-off-by: Charles Arnold <carnold@suse.com>
Signed-off-by: Kevin Wolf <kwolf@redhat.com>
---

diff --git a/qemu-img.c b/qemu-img.c
index 5434ddc..c8a70ff 100644
--- a/qemu-img.c
+++ b/qemu-img.c
@@ -712,6 +712,9 @@ static int img_convert(int argc, char **argv)
 
     out_filename = argv[argc - 1];
 
+    /* Initialize before goto out */
+    qemu_progress_init(progress, 2.0);
+
     if (options && !strcmp(options, "?")) {
         ret = print_block_option_help(out_filename, out_fmt);
         goto out;
@@ -724,7 +727,6 @@ static int img_convert(int argc, char **argv)
         goto out;
     }
 
-    qemu_progress_init(progress, 2.0);
     qemu_progress_print(0, 100);
 
     bs = g_malloc0(bs_n * sizeof(BlockDriverState *));