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authorPavel Skripkin <paskripkin@gmail.com>2021-05-07 15:50:43 +0300
committerGreg Kroah-Hartman <gregkh@linuxfoundation.org>2021-07-14 17:53:00 +0300
commitd808329ae1376c61b7344b2d21f1058073d1dc49 (patch)
tree70f8dd81da470436d352e9cccbe3ecf271f7b306 /drivers/media/usb/dvb-usb
parent3b4dd159db68a1f3a4ea14b06c47da55304e21a5 (diff)
downloadlinux-d808329ae1376c61b7344b2d21f1058073d1dc49.tar.xz
media: dvb-usb: fix wrong definition
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>
Diffstat (limited to 'drivers/media/usb/dvb-usb')
-rw-r--r--drivers/media/usb/dvb-usb/cxusb.c2
1 files changed, 1 insertions, 1 deletions
diff --git a/drivers/media/usb/dvb-usb/cxusb.c b/drivers/media/usb/dvb-usb/cxusb.c
index fac19ec46089..06bd827ef461 100644
--- a/drivers/media/usb/dvb-usb/cxusb.c
+++ b/drivers/media/usb/dvb-usb/cxusb.c
@@ -1950,7 +1950,7 @@ static struct dvb_usb_device_properties cxusb_bluebird_lgz201_properties = {
.size_of_priv = sizeof(struct cxusb_state),
- .num_adapters = 2,
+ .num_adapters = 1,
.adapter = {
{
.num_frontends = 1,