usb 1-1: New USB device found, idVendor=09c0, idProduct=0201, bcdDevice=cc.5e usb 1-1: New USB device strings: Mfr=0, Product=0, SerialNumber=0 usb 1-1: config 0 descriptor?? dvb-usb: found a 'Genpix 8PSK-to-USB2 Rev.1 DVB-S receiver' in warm state. gp8psk: usb in 128 operation failed. ===================================================== BUG: KMSAN: uninit-value in gp8psk_power_ctrl+0x4dc/0x1740 drivers/media/usb/dvb-usb/gp8psk.c:190 CPU: 1 PID: 8478 Comm: kworker/1:0 Not tainted 5.9.0-rc8-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+0xf7/0x1e0 mm/kmsan/kmsan_report.c:122 __msan_warning+0x5f/0xa0 mm/kmsan/kmsan_instr.c:201 gp8psk_power_ctrl+0x4dc/0x1740 drivers/media/usb/dvb-usb/gp8psk.c:190 dvb_usb_device_power_ctrl drivers/media/usb/dvb-usb/dvb-usb-init.c:236 [inline] dvb_usb_init drivers/media/usb/dvb-usb/dvb-usb-init.c:170 [inline] dvb_usb_device_init+0x16ea/0x3350 drivers/media/usb/dvb-usb/dvb-usb-init.c:287 gp8psk_usb_probe+0xa2/0x1a0 drivers/media/usb/dvb-usb/gp8psk.c:304 usb_probe_interface+0xfcc/0x1520 drivers/usb/core/driver.c:396 really_probe+0xebd/0x2420 drivers/base/dd.c:557 driver_probe_device+0x293/0x390 drivers/base/dd.c:738 __device_attach_driver+0x63f/0x830 drivers/base/dd.c:844 bus_for_each_drv+0x2ca/0x3f0 drivers/base/bus.c:431 __device_attach+0x538/0x860 drivers/base/dd.c:912 device_initial_probe+0x4a/0x60 drivers/base/dd.c:959 bus_probe_device+0x177/0x3d0 drivers/base/bus.c:491 device_add+0x399e/0x3f20 drivers/base/core.c:2926 usb_set_configuration+0x395f/0x3f90 drivers/usb/core/message.c:2025 usb_generic_driver_probe+0x138/0x300 drivers/usb/core/generic.c:240 usb_probe_device+0x317/0x570 drivers/usb/core/driver.c:293 really_probe+0xebd/0x2420 drivers/base/dd.c:557 driver_probe_device+0x293/0x390 drivers/base/dd.c:738 __device_attach_driver+0x63f/0x830 drivers/base/dd.c:844 bus_for_each_drv+0x2ca/0x3f0 drivers/base/bus.c:431 __device_attach+0x538/0x860 drivers/base/dd.c:912 device_initial_probe+0x4a/0x60 drivers/base/dd.c:959 bus_probe_device+0x177/0x3d0 drivers/base/bus.c:491 device_add+0x399e/0x3f20 drivers/base/core.c:2926 usb_new_device+0x1bd6/0x2a30 drivers/usb/core/hub.c:2554 hub_port_connect drivers/usb/core/hub.c:5208 [inline] hub_port_connect_change drivers/usb/core/hub.c:5348 [inline] port_event drivers/usb/core/hub.c:5494 [inline] hub_event+0x59b1/0x8640 drivers/usb/core/hub.c:5576 process_one_work+0x1224/0x20a0 kernel/workqueue.c:2269 worker_thread+0x10cc/0x2740 kernel/workqueue.c:2415 kthread+0x51c/0x560 kernel/kthread.c:293 ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:294 Local variable ----status@gp8psk_power_ctrl created at: gp8psk_power_ctrl+0x62/0x1740 drivers/media/usb/dvb-usb/gp8psk.c:185 gp8psk_power_ctrl+0x62/0x1740 drivers/media/usb/dvb-usb/gp8psk.c:185 =====================================================