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    Subject[PATCH 4.9 002/245] media: dvb-usb: fix wrong definition
    Date
    From: Pavel Skripkin <paskripkin@gmail.com>

    commit c680ed46e418e9c785d76cf44eb33bfd1e8cf3f6 upstream.

    syzbot reported WARNING in vmalloc. The problem
    was in zero size passed to vmalloc.

    The root case was in wrong cxusb_bluebird_lgz201_properties
    definition. adapter array has only 1 entry, but num_adapters was
    2.

    Call Trace:
    __vmalloc_node mm/vmalloc.c:2963 [inline]
    vmalloc+0x67/0x80 mm/vmalloc.c:2996
    dvb_dmx_init+0xe4/0xb90 drivers/media/dvb-core/dvb_demux.c:1251
    dvb_usb_adapter_dvb_init+0x564/0x860 drivers/media/usb/dvb-usb/dvb-usb-dvb.c:184
    dvb_usb_adapter_init drivers/media/usb/dvb-usb/dvb-usb-init.c:86 [inline]
    dvb_usb_init drivers/media/usb/dvb-usb/dvb-usb-init.c:184 [inline]
    dvb_usb_device_init.cold+0xc94/0x146e drivers/media/usb/dvb-usb/dvb-usb-init.c:308
    cxusb_probe+0x159/0x5e0 drivers/media/usb/dvb-usb/cxusb.c:1634

    Fixes: 4d43e13f723e ("V4L/DVB (4643): Multi-input patch for DVB-USB device")
    Cc: stable@vger.kernel.org
    Reported-by: syzbot+7336195c02c1bd2f64e1@syzkaller.appspotmail.com
    Signed-off-by: Pavel Skripkin <paskripkin@gmail.com>
    Signed-off-by: Sean Young <sean@mess.org>
    Signed-off-by: Mauro Carvalho Chehab <mchehab+huawei@kernel.org>
    Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

    ---
    drivers/media/usb/dvb-usb/cxusb.c | 2 +-
    1 file changed, 1 insertion(+), 1 deletion(-)

    --- a/drivers/media/usb/dvb-usb/cxusb.c
    +++ b/drivers/media/usb/dvb-usb/cxusb.c
    @@ -1791,7 +1791,7 @@ static struct dvb_usb_device_properties

    .size_of_priv = sizeof(struct cxusb_state),

    - .num_adapters = 2,
    + .num_adapters = 1,
    .adapter = {
    {
    .num_frontends = 1,

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