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| author | Cornelia Huck <cohuck@redhat.com> | 2020-09-28 12:17:01 +0200 |
|---|---|---|
| committer | Cornelia Huck <cohuck@redhat.com> | 2020-10-02 13:52:49 +0200 |
| commit | c8726f7b24be9384a148f3dc212036398193441c (patch) | |
| tree | 021c78e8c12ef7275a60abe4366efb86b8a0d29a /hw/vfio/ccw.c | |
| parent | 20d143e2cab8b597bbdb7a15f123d9704fa8db18 (diff) | |
| download | focaccia-qemu-c8726f7b24be9384a148f3dc212036398193441c.tar.gz focaccia-qemu-c8726f7b24be9384a148f3dc212036398193441c.zip | |
vfio-ccw: plug memory leak while getting region info
vfio_get_dev_region_info() unconditionally allocates memory
for a passed-in vfio_region_info structure (and does not re-use
an already allocated structure). Therefore, we have to free
the structure we pass to that function in vfio_ccw_get_region()
for every region we successfully obtained information for.
Fixes: 8fadea24de4e ("vfio-ccw: support async command subregion")
Fixes: 46ea3841edaf ("vfio-ccw: Add support for the schib region")
Fixes: f030532f2ad6 ("vfio-ccw: Add support for the CRW region and IRQ")
Reported-by: Alex Williamson <alex.williamson@redhat.com>
Signed-off-by: Cornelia Huck <cohuck@redhat.com>
Reviewed-by: Eric Farman <farman@linux.ibm.com>
Reviewed-by: Philippe Mathieu-Daudé <philmd@redhat.com>
Message-Id: <20200928101701.13540-1-cohuck@redhat.com>
Diffstat (limited to 'hw/vfio/ccw.c')
| -rw-r--r-- | hw/vfio/ccw.c | 5 |
1 files changed, 4 insertions, 1 deletions
diff --git a/hw/vfio/ccw.c b/hw/vfio/ccw.c index ff7f369779..d2755d7fc5 100644 --- a/hw/vfio/ccw.c +++ b/hw/vfio/ccw.c @@ -491,6 +491,7 @@ static void vfio_ccw_get_region(VFIOCCWDevice *vcdev, Error **errp) vcdev->io_region_offset = info->offset; vcdev->io_region = g_malloc0(info->size); + g_free(info); /* check for the optional async command region */ ret = vfio_get_dev_region_info(vdev, VFIO_REGION_TYPE_CCW, @@ -503,6 +504,7 @@ static void vfio_ccw_get_region(VFIOCCWDevice *vcdev, Error **errp) } vcdev->async_cmd_region_offset = info->offset; vcdev->async_cmd_region = g_malloc0(info->size); + g_free(info); } ret = vfio_get_dev_region_info(vdev, VFIO_REGION_TYPE_CCW, @@ -515,6 +517,7 @@ static void vfio_ccw_get_region(VFIOCCWDevice *vcdev, Error **errp) } vcdev->schib_region_offset = info->offset; vcdev->schib_region = g_malloc(info->size); + g_free(info); } ret = vfio_get_dev_region_info(vdev, VFIO_REGION_TYPE_CCW, @@ -528,9 +531,9 @@ static void vfio_ccw_get_region(VFIOCCWDevice *vcdev, Error **errp) } vcdev->crw_region_offset = info->offset; vcdev->crw_region = g_malloc(info->size); + g_free(info); } - g_free(info); return; out_err: |