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From: Peter Maydell <peter.maydell@linaro.org>
To: qemu-devel@nongnu.org
Cc: Kevin Wolf <kwolf@redhat.com>, patches@linaro.org
Subject: [Qemu-devel] [PATCH] hw/pc.c: Fix use-while-uninitialized of fd_type[]
Date: Wed,  9 Nov 2011 21:59:50 +0000	[thread overview]
Message-ID: <1320875990-10517-1-git-send-email-peter.maydell@linaro.org> (raw)

Fix a use-while-uninitialized of the fd_type[] array (introduced
in commit 34d4260e1, noticed by Coverity). This is more theoretical
than practical, since it's quite hard to get here with floppy==NULL
(the qdev_try_create() of the isa-fdc device has to fail).

Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
---
 hw/pc.c |    4 +---
 1 files changed, 1 insertions(+), 3 deletions(-)

diff --git a/hw/pc.c b/hw/pc.c
index 3015671..33778fe 100644
--- a/hw/pc.c
+++ b/hw/pc.c
@@ -335,7 +335,7 @@ void pc_cmos_init(ram_addr_t ram_size, ram_addr_t above_4g_mem_size,
                   ISADevice *s)
 {
     int val, nb, nb_heads, max_track, last_sect, i;
-    FDriveType fd_type[2];
+    FDriveType fd_type[2] = { FDRIVE_DRV_NONE, FDRIVE_DRV_NONE };
     BlockDriverState *fd[MAX_FD];
     static pc_cmos_init_late_arg arg;
 
@@ -385,8 +385,6 @@ void pc_cmos_init(ram_addr_t ram_size, ram_addr_t above_4g_mem_size,
                 bdrv_get_floppy_geometry_hint(fd[i], &nb_heads, &max_track,
                                               &last_sect, FDRIVE_DRV_NONE,
                                               &fd_type[i]);
-            } else {
-                fd_type[i] = FDRIVE_DRV_NONE;
             }
         }
     }
-- 
1.7.1

             reply	other threads:[~2011-11-09 21:59 UTC|newest]

Thread overview: 2+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2011-11-09 21:59 Peter Maydell [this message]
2011-11-10 13:04 ` [Qemu-devel] [PATCH] hw/pc.c: Fix use-while-uninitialized of fd_type[] Kevin Wolf

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