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From: Kevin Wolf <kwolf@redhat.com>
To: anthony@codemonkey.ws
Cc: kwolf@redhat.com, qemu-devel@nongnu.org
Subject: [Qemu-devel] [PATCH 13/16] hw/pc.c: Fix use-while-uninitialized of fd_type[]
Date: Fri, 11 Nov 2011 18:39:25 +0100	[thread overview]
Message-ID: <1321033168-8739-14-git-send-email-kwolf@redhat.com> (raw)
In-Reply-To: <1321033168-8739-1-git-send-email-kwolf@redhat.com>

From: Peter Maydell <peter.maydell@linaro.org>

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>
Signed-off-by: Kevin Wolf <kwolf@redhat.com>
---
 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;
             }
         }
     }
-- 
1.7.6.4

  parent reply	other threads:[~2011-11-11 18:38 UTC|newest]

Thread overview: 18+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2011-11-11 17:39 [Qemu-devel] [PULL 00/16] Block patches for 1.0 Kevin Wolf
2011-11-11 17:39 ` [Qemu-devel] [PATCH 01/16] vvfat: Fix read-write mode Kevin Wolf
2011-11-11 17:39 ` [Qemu-devel] [PATCH 02/16] block: add eject request callback Kevin Wolf
2011-11-11 17:39 ` [Qemu-devel] [PATCH 03/16] atapi: implement eject requests Kevin Wolf
2011-11-11 17:39 ` [Qemu-devel] [PATCH 04/16] scsi-disk: " Kevin Wolf
2011-11-11 17:39 ` [Qemu-devel] [PATCH 05/16] nbd: treat EPIPE from NBD_DO_IT as success Kevin Wolf
2011-11-11 17:39 ` [Qemu-devel] [PATCH 06/16] qemu-nbd: trap SIGTERM Kevin Wolf
2011-11-11 17:39 ` [Qemu-devel] [PATCH 07/16] qemu-nbd: rename socket variable Kevin Wolf
2011-11-11 17:39 ` [Qemu-devel] [PATCH 08/16] qemu-nbd: move client to a thread Kevin Wolf
2011-11-11 17:39 ` [Qemu-devel] [PATCH 09/16] qemu-nbd: print error messages from the daemon through a pipe Kevin Wolf
2011-11-11 17:39 ` [Qemu-devel] [PATCH 10/16] qemu-nbd: fix socket creation race Kevin Wolf
2011-11-11 17:39 ` [Qemu-devel] [PATCH 11/16] qemu-nbd: open the block device after starting the client thread Kevin Wolf
2011-11-11 17:39 ` [Qemu-devel] [PATCH 12/16] block: Fix vpc initialization of the Dynamic Disk Header Kevin Wolf
2011-11-11 17:39 ` Kevin Wolf [this message]
2011-11-11 17:39 ` [Qemu-devel] [PATCH 14/16] block: Rename bdrv_co_flush to bdrv_co_flush_to_disk Kevin Wolf
2011-11-11 17:39 ` [Qemu-devel] [PATCH 15/16] block: Introduce bdrv_co_flush_to_os Kevin Wolf
2011-11-11 17:39 ` [Qemu-devel] [PATCH 16/16] block: Make cache=unsafe flush to the OS Kevin Wolf
2011-11-13 17:44 ` [Qemu-devel] [PULL 00/16] Block patches for 1.0 Anthony Liguori

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