dvbdev: DVB: registering new adapter (Artec T1 USB2.0) usb 2-1: media controller created dvbdev: dvb_create_media_entity: media entity 'dvb-demux' registered. dvb-usb: bulk message failed: -22 (6/0) ===================================================== BUG: KMSAN: uninit-value in dib3000mb_attach+0x375/0x490 drivers/media/dvb-frontends/dib3000mb.c:758 CPU: 0 PID: 8867 Comm: kworker/0:4 Not tainted 5.10.0-rc4-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 Workqueue: usb_hub_wq hub_event Call Trace: __dump_stack lib/dump_stack.c:77 [inline] dump_stack+0x21c/0x280 lib/dump_stack.c:118 kmsan_report+0xfb/0x1e0 mm/kmsan/kmsan_report.c:118 __msan_warning+0x5f/0xa0 mm/kmsan/kmsan_instr.c:197 dib3000mb_attach+0x375/0x490 drivers/media/dvb-frontends/dib3000mb.c:758 dibusb_dib3000mb_frontend_attach+0x137/0x3c0 drivers/media/usb/dvb-usb/dibusb-mb.c:31 dvb_usb_adapter_frontend_init+0x11f/0xaf0 drivers/media/usb/dvb-usb/dvb-usb-dvb.c:290 dvb_usb_adapter_init drivers/media/usb/dvb-usb/dvb-usb-init.c:84 [inline] dvb_usb_init drivers/media/usb/dvb-usb/dvb-usb-init.c:173 [inline] dvb_usb_device_init+0x2873/0x3370 drivers/media/usb/dvb-usb/dvb-usb-init.c:287 dibusb_probe+0x24b/0x320 drivers/media/usb/dvb-usb/dibusb-mb.c:116 usb_probe_interface+0xfcc/0x1520 drivers/usb/core/driver.c:396 really_probe+0xebd/0x2420 drivers/base/dd.c:558 driver_probe_device+0x29d/0x3a0 drivers/base/dd.c:738 __device_attach_driver+0x63f/0x830 drivers/base/dd.c:844 bus_for_each_drv+0x2c8/0x3f0 drivers/base/bus.c:431 __device_attach+0x56a/0x890 drivers/base/dd.c:912 device_initial_probe+0x4a/0x60 drivers/base/dd.c:959 bus_probe_device+0x17e/0x3d0 drivers/base/bus.c:491 device_add+0x397e/0x3f00 drivers/base/core.c:2936 usb_set_configuration+0x39a2/0x4000 drivers/usb/core/message.c:2159 usb_generic_driver_probe+0x138/0x300 drivers/usb/core/generic.c:238 usb_probe_device+0x317/0x570 drivers/usb/core/driver.c:293 really_probe+0xebd/0x2420 drivers/base/dd.c:558 driver_probe_device+0x29d/0x3a0 drivers/base/dd.c:738 __device_attach_driver+0x63f/0x830 drivers/base/dd.c:844 bus_for_each_drv+0x2c8/0x3f0 drivers/base/bus.c:431 __device_attach+0x56a/0x890 drivers/base/dd.c:912 device_initial_probe+0x4a/0x60 drivers/base/dd.c:959 bus_probe_device+0x17e/0x3d0 drivers/base/bus.c:491 device_add+0x397e/0x3f00 drivers/base/core.c:2936 usb_new_device+0x1bd4/0x2a30 drivers/usb/core/hub.c:2554 hub_port_connect drivers/usb/core/hub.c:5222 [inline] hub_port_connect_change drivers/usb/core/hub.c:5362 [inline] port_event drivers/usb/core/hub.c:5508 [inline] hub_event+0x5b99/0x8870 drivers/usb/core/hub.c:5590 process_one_work+0x1219/0x1fe0 kernel/workqueue.c:2272 worker_thread+0x123c/0x2730 kernel/workqueue.c:2418 kthread+0x51c/0x560 kernel/kthread.c:292 ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:296 Local variable ----rb@dib3000_read_reg created at: dib3000_read_reg+0xdb/0x5c0 drivers/media/dvb-frontends/dib3000mb.c:54 dib3000_read_reg+0xdb/0x5c0 drivers/media/dvb-frontends/dib3000mb.c:54 =====================================================