[ OK ] Started Getty on tty2. [ OK ] Started Getty on tty1. [ OK ] Started Serial Getty on ttyS0. [ OK ] Started System Logging Service. [ OK ] Started getty on tty2-tty6 if dbus and logind are not available. Debian GNU/Linux 9 syzkaller ttyS0 Warning: Permanently added '10.128.0.145' (ECDSA) to the list of known hosts. executing program syzkaller login: [ 136.517763][ T1983] usb 1-1: new high-speed USB device number 2 using dummy_hcd [ 136.897932][ T1983] usb 1-1: New USB device found, idVendor=2770, idProduct=9120, bcdDevice=3a.ce [ 136.907057][ T1983] usb 1-1: New USB device strings: Mfr=0, Product=0, SerialNumber=0 [ 136.919111][ T1983] usb 1-1: config 0 descriptor?? [ 136.964693][ T1983] gspca_main: sq905-2.14.0 probing 2770:9120 [ 138.057940][ T1983] gspca_sq905: bulk read fail (-22) len -30591/4 [ 138.061409][ C0] ===================================================== [ 138.061433][ C0] BUG: KMSAN: uninit-value in number+0x54f/0x2540 [ 138.061454][ C0] CPU: 0 PID: 1983 Comm: kworker/0:2 Not tainted 5.11.0-rc7-syzkaller #0 [ 138.061479][ C0] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 138.061503][ C0] Workqueue: usb_hub_wq hub_event [ 138.061532][ C0] Call Trace: [ 138.061545][ C0] dump_stack+0x21c/0x280 [ 138.061560][ C0] kmsan_report+0xfb/0x1e0 [ 138.061575][ C0] __msan_warning+0x5f/0xa0 [ 138.061590][ C0] number+0x54f/0x2540 [ 138.061605][ C0] ? kmsan_internal_set_origin+0x85/0xc0 [ 138.061622][ C0] ? kmsan_get_metadata+0x116/0x180 [ 138.061638][ C0] vsnprintf+0x1cd6/0x3600 [ 138.061653][ C0] vprintk_store+0x2ab/0x1df0 [ 138.061669][ C0] ? usb_set_configuration+0x3872/0x3eb0 [ 138.061686][ C0] ? usb_probe_device+0x317/0x570 [ 138.061702][ C0] ? driver_probe_device+0x29d/0x3a0 [ 138.061719][ C0] ? __device_attach_driver+0x63f/0x830 [ 138.061736][ C0] ? bus_for_each_drv+0x2c8/0x3f0 [ 138.061752][ C0] ? device_initial_probe+0x4a/0x60 [ 138.061768][ C0] ? device_add+0x2c15/0x31d0 [ 138.061784][ C0] ? process_one_work+0x1219/0x1fe0 [ 138.061800][ C0] ? kmsan_internal_set_origin+0x85/0xc0 [ 138.061817][ C0] ? kmsan_get_shadow_origin_ptr+0x84/0xb0 [ 138.061834][ C0] vprintk_emit+0x29a/0x7f0 [ 138.061849][ C0] vprintk_default+0x86/0xa0 [ 138.061864][ C0] vprintk_func+0x2ed/0x2f0 [ 138.061879][ C0] printk+0x180/0x1cd [ 138.061899][ C0] ? kmsan_get_shadow_origin_ptr+0x84/0xb0 [ 138.061916][ C0] sq905_read_data+0x630/0x650 [ 138.061931][ C0] sd_init+0x184/0x530 [ 138.061945][ C0] ? sd_config+0x1d0/0x1d0 [ 138.061960][ C0] gspca_dev_probe2+0x129f/0x23f0 [ 138.061976][ C0] gspca_dev_probe+0x3db/0x440 [ 138.061991][ C0] sd_probe+0x8d/0xa0 [ 138.062005][ C0] ? wait_status_1+0xf00/0xf00 [ 138.062023][ C0] usb_probe_interface+0xfcc/0x1520 [ 138.062056][ C0] ? usb_register_driver+0x900/0x900 [ 138.062090][ C0] really_probe+0xe15/0x24d0 [ 138.062124][ C0] driver_probe_device+0x29d/0x3a0 [ 138.062159][ C0] __device_attach_driver+0x63f/0x830 [ 138.062194][ C0] bus_for_each_drv+0x2c8/0x3f0 [ 138.062221][ C0] ? deferred_probe_work_func+0x400/0x400 [ 138.062238][ C0] __device_attach+0x56a/0x890 [ 138.062253][ C0] device_initial_probe+0x4a/0x60 [ 138.062270][ C0] bus_probe_device+0x17e/0x3d0 [ 138.062286][ C0] ? kmsan_get_shadow_origin_ptr+0x84/0xb0 [ 138.062303][ C0] device_add+0x2c15/0x31d0 [ 138.062318][ C0] usb_set_configuration+0x3872/0x3eb0 [ 138.062335][ C0] ? usb_set_configuration+0xa61/0x3eb0 [ 138.062352][ C0] ? __msan_metadata_ptr_for_load_1+0x10/0x20 [ 138.062371][ C0] usb_generic_driver_probe+0x138/0x300 [ 138.062390][ C0] ? usb_choose_configuration+0xee0/0xee0 [ 138.062407][ C0] usb_probe_device+0x317/0x570 [ 138.062424][ C0] ? usb_register_device_driver+0x590/0x590 [ 138.062442][ C0] really_probe+0xe15/0x24d0 [ 138.062457][ C0] driver_probe_device+0x29d/0x3a0 [ 138.062473][ C0] __device_attach_driver+0x63f/0x830 [ 138.062490][ C0] bus_for_each_drv+0x2c8/0x3f0 [ 138.062506][ C0] ? deferred_probe_work_func+0x400/0x400 [ 138.062523][ C0] __device_attach+0x56a/0x890 [ 138.062538][ C0] device_initial_probe+0x4a/0x60 [ 138.062554][ C0] bus_probe_device+0x17e/0x3d0 [ 138.062570][ C0] ? kmsan_get_shadow_origin_ptr+0x84/0xb0 [ 138.062587][ C0] device_add+0x2c15/0x31d0 [ 138.062602][ C0] usb_new_device+0x1bd4/0x2a30 [ 138.062618][ C0] hub_event+0x5b99/0x8870 [ 138.062633][ C0] ? kmsan_get_metadata+0x116/0x180 [ 138.062650][ C0] ? kmsan_get_shadow_origin_ptr+0x84/0xb0 [ 138.062666][ C0] ? led_work+0x780/0x780 [ 138.062681][ C0] process_one_work+0x1219/0x1fe0 [ 138.062697][ C0] worker_thread+0x10ec/0x2340 [ 138.062712][ C0] kthread+0x521/0x560 [ 138.062727][ C0] ? process_one_work+0x1fe0/0x1fe0 [ 138.062743][ C0] ? kthread_blkcg+0x110/0x110 [ 138.062758][ C0] ret_from_fork+0x1f/0x30 [ 138.062771][ C0] [ 138.062785][ C0] Local variable ----act_len@sq905_read_data created at: [ 138.062805][ C0] sq905_read_data+0x87/0x650 [ 138.062820][ C0] sq905_read_data+0x87/0x650 [ 138.062838][ C0] ===================================================== [ 138.062858][ C0] Disabling lock debugging due to kernel taint [ 138.062877][ C0] ===================================================== [ 138.062902][ C0] BUG: KMSAN: uninit-value in number+0x8d9/0x2540 [ 138.062924][ C0] CPU: 0 PID: 1983 Comm: kworker/0:2 Tainted: G B 5.11.0-rc7-syzkaller #0 [ 138.062950][ C0] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 138.062973][ C0] Workqueue: usb_hub_wq hub_event [ 138.063001][ C0] Call Trace: [ 138.063013][ C0] dump_stack+0x21c/0x280 [ 138.063028][ C0] kmsan_report+0xfb/0x1e0 [ 138.063042][ C0] __msan_warning+0x5f/0xa0 [ 138.063057][ C0] number+0x8d9/0x2540 [ 138.063071][ C0] vsnprintf+0x1cd6/0x3600 [ 138.063085][ C0] vprintk_store+0x2ab/0x1df0 [ 138.063101][ C0] ? usb_set_configuration+0x3872/0x3eb0 [ 138.063118][ C0] ? usb_probe_device+0x317/0x570 [ 138.063134][ C0] ? driver_probe_device+0x29d/0x3a0 [ 138.063150][ C0] ? __device_attach_driver+0x63f/0x830 [ 138.063167][ C0] ? bus_for_each_drv+0x2c8/0x3f0 [ 138.063186][ C0] ? device_initial_probe+0x4a/0x60 [ 138.063219][ C0] ? device_add+0x2c15/0x31d0 [ 138.063252][ C0] ? process_one_work+0x1219/0x1fe0 [ 138.063289][ C0] ? kmsan_internal_set_origin+0x85/0xc0 [ 138.063326][ C0] ? kmsan_get_shadow_origin_ptr+0x84/0xb0 [ 138.063361][ C0] vprintk_emit+0x29a/0x7f0 [ 138.063387][ C0] vprintk_default+0x86/0xa0 [ 138.063402][ C0] vprintk_func+0x2ed/0x2f0 [ 138.063417][ C0] printk+0x180/0x1cd [ 138.063432][ C0] ? kmsan_get_shadow_origin_ptr+0x84/0xb0 [ 138.063449][ C0] sq905_read_data+0x630/0x650 [ 138.063463][ C0] sd_init+0x184/0x530 [ 138.063478][ C0] ? sd_config+0x1d0/0x1d0 [ 138.063492][ C0] gspca_dev_probe2+0x129f/0x23f0 [ 138.063508][ C0] gspca_dev_probe+0x3db/0x440 [ 138.063523][ C0] sd_probe+0x8d/0xa0 [ 138.063537][ C0] ? wait_status_1+0xf00/0xf00 [ 138.063553][ C0] usb_probe_interface+0xfcc/0x1520 [ 138.063569][ C0] ? usb_register_driver+0x900/0x900 [ 138.063585][ C0] really_probe+0xe15/0x24d0 [ 138.063600][ C0] driver_probe_device+0x29d/0x3a0 [ 138.063617][ C0] __device_attach_driver+0x63f/0x830 [ 138.063633][ C0] bus_for_each_drv+0x2c8/0x3f0 [ 138.063649][ C0] ? deferred_probe_work_func+0x400/0x400 [ 138.063665][ C0] __device_attach+0x56a/0x890 [ 138.063681][ C0] device_initial_probe+0x4a/0x60 [ 138.063697][ C0] bus_probe_device+0x17e/0x3d0 [ 138.063713][ C0] ? kmsan_get_shadow_origin_ptr+0x84/0xb0 [ 138.063730][ C0] device_add+0x2c15/0x31d0 [ 138.063745][ C0] usb_set_configuration+0x3872/0x3eb0 [ 138.063762][ C0] ? usb_set_configuration+0xa61/0x3eb0 [ 138.063779][ C0] ? __msan_metadata_ptr_for_load_1+0x10/0x20 [ 138.063797][ C0] usb_generic_driver_probe+0x138/0x300 [ 138.063814][ C0] ? usb_choose_configuration+0xee0/0xee0 [ 138.063831][ C0] usb_probe_device+0x317/0x570 [ 138.063847][ C0] ? usb_register_device_driver+0x590/0x590 [ 138.063864][ C0] really_probe+0xe15/0x24d0 [ 138.063879][ C0] driver_probe_device+0x29d/0x3a0 [ 138.063900][ C0] __device_attach_driver+0x63f/0x830 [ 138.063916][ C0] bus_for_each_drv+0x2c8/0x3f0 [ 138.063932][ C0] ? deferred_probe_work_func+0x400/0x400 [ 138.063949][ C0] __device_attach+0x56a/0x890 [ 138.063965][ C0] device_initial_probe+0x4a/0x60 [ 138.063980][ C0] bus_probe_device+0x17e/0x3d0 [ 138.063996][ C0] ? kmsan_get_shadow_origin_ptr+0x84/0xb0 [ 138.064013][ C0] device_add+0x2c15/0x31d0 [ 138.064028][ C0] usb_new_device+0x1bd4/0x2a30 [ 138.064043][ C0] hub_event+0x5b99/0x8870 [ 138.064058][ C0] ? kmsan_get_metadata+0x116/0x180 [ 138.064075][ C0] ? kmsan_get_shadow_origin_ptr+0x84/0xb0 [ 138.064092][ C0] ? led_work+0x780/0x780 [ 138.064107][ C0] process_one_work+0x1219/0x1fe0 [ 138.064122][ C0] worker_thread+0x10ec/0x2340 [ 138.064138][ C0] kthread+0x521/0x560 [ 138.064152][ C0] ? process_one_work+0x1fe0/0x1fe0 [ 138.064168][ C0] ? kthread_blkcg+0x110/0x110 [ 138.064184][ C0] ret_from_fork+0x1f/0x30 [ 138.064197][ C0] [ 138.064211][ C0] Local variable ----act_len@sq905_read_data created at: [ 138.064231][ C0] sq905_read_data+0x87/0x650 [ 138.064247][ C0] sq905_read_data+0x87/0x650 [ 138.064264][ C0] ===================================================== [ 138.064284][ C0] ===================================================== [ 138.064305][ C0] BUG: KMSAN: uninit-value in put_dec+0x1dc/0x260 [ 138.064326][ C0] CPU: 0 PID: 1983 Comm: kworker/0:2 Tainted: G B 5.11.0-rc7-syzkaller #0 [ 138.064363][ C0] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 138.064412][ C0] Workqueue: usb_hub_wq hub_event [ 138.064468][ C0] Call Trace: [ 138.064495][ C0] dump_stack+0x21c/0x280 [ 138.064526][ C0] kmsan_report+0xfb/0x1e0 [ 138.064546][ C0] __msan_warning+0x5f/0xa0 [ 138.064561][ C0] put_dec+0x1dc/0x260 [ 138.064575][ C0] number+0x896/0x2540 [ 138.064589][ C0] vsnprintf+0x1cd6/0x3600 [ 138.064603][ C0] vprintk_store+0x2ab/0x1df0 [ 138.064619][ C0] ? usb_set_configuration+0x3872/0x3eb0 [ 138.064636][ C0] ? usb_probe_device+0x317/0x570 [ 138.064652][ C0] ? driver_probe_device+0x29d/0x3a0 [ 138.064668][ C0] ? __device_attach_driver+0x63f/0x830 [ 138.064685][ C0] ? bus_for_each_drv+0x2c8/0x3f0 [ 138.064701][ C0] ? device_initial_probe+0x4a/0x60 [ 138.064716][ C0] ? device_add+0x2c15/0x31d0 [ 138.064732][ C0] ? process_one_work+0x1219/0x1fe0 [ 138.064748][ C0] ? kmsan_internal_set_origin+0x85/0xc0 [ 138.064765][ C0] ? kmsan_get_shadow_origin_ptr+0x84/0xb0 [ 138.064782][ C0] vprintk_emit+0x29a/0x7f0 [ 138.064797][ C0] vprintk_default+0x86/0xa0 [ 138.064812][ C0] vprintk_func+0x2ed/0x2f0 [ 138.064826][ C0] printk+0x180/0x1cd [ 138.064841][ C0] ? kmsan_get_shadow_origin_ptr+0x84/0xb0 [ 138.064858][ C0] sq905_read_data+0x630/0x650 [ 138.064873][ C0] sd_init+0x184/0x530 [ 138.064893][ C0] ? sd_config+0x1d0/0x1d0 [ 138.064908][ C0] gspca_dev_probe2+0x129f/0x23f0 [ 138.064923][ C0] gspca_dev_probe+0x3db/0x440 [ 138.064938][ C0] sd_probe+0x8d/0xa0 [ 138.064952][ C0] ? wait_status_1+0xf00/0xf00 [ 138.064968][ C0] usb_probe_interface+0xfcc/0x1520 [ 138.064984][ C0] ? usb_register_driver+0x900/0x900 [ 138.065000][ C0] really_probe+0xe15/0x24d0 [ 138.065015][ C0] driver_probe_device+0x29d/0x3a0 [ 138.065032][ C0] __device_attach_driver+0x63f/0x830 [ 138.065048][ C0] bus_for_each_drv+0x2c8/0x3f0 [ 138.065064][ C0] ? deferred_probe_work_func+0x400/0x400 [ 138.065081][ C0] __device_attach+0x56a/0x890 [ 138.065096][ C0] device_initial_probe+0x4a/0x60 [ 138.065112][ C0] bus_probe_device+0x17e/0x3d0 [ 138.065128][ C0] ? kmsan_get_shadow_origin_ptr+0x84/0xb0 [ 138.065144][ C0] device_add+0x2c15/0x31d0 [ 138.065159][ C0] usb_set_configuration+0x3872/0x3eb0 [ 138.065176][ C0] ? usb_set_configuration+0xa61/0x3eb0 [ 138.065194][ C0] ? __msan_metadata_ptr_for_load_1+0x10/0x20 [ 138.065211][ C0] usb_generic_driver_probe+0x138/0x300 [ 138.065228][ C0] ? usb_choose_configuration+0xee0/0xee0 [ 138.065245][ C0] usb_probe_device+0x317/0x570 [ 138.065261][ C0] ? usb_register_device_driver+0x590/0x590 [ 138.065278][ C0] really_probe+0xe15/0x24d0 [ 138.065293][ C0] driver_probe_device+0x29d/0x3a0 [ 138.065309][ C0] __device_attach_driver+0x63f/0x830 [ 138.065325][ C0] bus_for_each_drv+0x2c8/0x3f0 [ 138.065341][ C0] ? deferred_probe_work_func+0x400/0x400 [ 138.065358][ C0] __device_attach+0x56a/0x890 [ 138.065374][ C0] device_initial_probe+0x4a/0x60 [ 138.065392][ C0] bus_probe_device+0x17e/0x3d0 [ 138.065409][ C0] ? kmsan_get_shadow_origin_ptr+0x84/0xb0 [ 138.065425][ C0] device_add+0x2c15/0x31d0 [ 138.065440][ C0] usb_new_device+0x1bd4/0x2a30 [ 138.065455][ C0] hub_event+0x5b99/0x8870 [ 138.065471][ C0] ? kmsan_get_metadata+0x116/0x180 [ 138.065487][ C0] ? kmsan_get_shadow_origin_ptr+0x84/0xb0 [ 138.065504][ C0] ? led_work+0x780/0x780 [ 138.065534][ C0] process_one_work+0x1219/0x1fe0 [ 138.065568][ C0] worker_thread+0x10ec/0x2340 [ 138.065600][ C0] kthread+0x521/0x560 [ 138.065631][ C0] ? process_one_work+0x1fe0/0x1fe0 [ 138.065664][ C0] ? kthread_blkcg+0x110/0x110 [ 138.065696][ C0] ret_from_fork+0x1f/0x30 [ 138.065710][ C0] [ 138.065723][ C0] Local variable ----act_len@sq905_read_data created at: [ 138.065743][ C0] sq905_read_data+0x87/0x650 [ 138.065759][ C0] sq905_read_data+0x87/0x650 [ 138.065780][ C0] ===================================================== [ 138.065801][ C0] ===================================================== [ 138.065822][ C0] BUG: KMSAN: uninit-value in put_dec_trunc8+0x31a/0x3c [ 138.065852][ C0] Lost 539 message(s)! [ 139.361759][ T1983] sq905: probe of 1-1:0.0 failed with error -5 executing program [ 139.509207][ T1983] usb 1-1: USB disconnect, device number 2 [ 139.867986][ T1983] usb 1-1: new high-speed USB device number 3 using dummy_hcd [ 140.227770][ T1983] usb 1-1: New USB device found, idVendor=2770, idProduct=9120, bcdDevice=3a.ce [ 140.237047][ T1983] usb 1-1: New USB device strings: Mfr=0, Product=0, SerialNumber=0 [ 140.248171][ T1983] usb 1-1: config 0 descriptor?? [ 140.294384][ T1983] gspca_main: sq905-2.14.0 probing 2770:9120 [ 141.387723][ T1983] gspca_sq905: bulk read fail (-22) len -30591/4 [ 141.391136][ C0] ===================================================== [ 141.391160][ C0] BUG: KMSAN: uninit-value in number+0x54f/0x2540 [ 141.391199][ C0] CPU: 0 PID: 1983 Comm: kworker/0:2 Tainted: G B 5.11.0-rc7-syzkaller #0 [ 141.391255][ C0] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 141.391308][ C0] Workqueue: usb_hub_wq hub_event [ 141.391358][ C0] Call Trace: [ 141.391372][ C0] dump_stack+0x21c/0x280 [ 141.391391][ C0] kmsan_report+0xfb/0x1e0 [ 141.391407][ C0] __msan_warning+0x5f/0xa0 [ 141.391421][ C0] number+0x54f/0x2540 [ 141.391436][ C0] ? kmsan_internal_set_origin+0x85/0xc0 [ 141.391453][ C0] ? kmsan_get_metadata+0x116/0x180 [ 141.391470][ C0] vsnprintf+0x1cd6/0x3600 [ 141.391485][ C0] vprintk_store+0x2ab/0x1df0 [ 141.391500][ C0] ? usb_set_configuration+0x3872/0x3eb0 [ 141.391518][ C0] ? usb_probe_device+0x317/0x570 [ 141.391534][ C0] ? driver_probe_device+0x29d/0x3a0 [ 141.391551][ C0] ? __device_attach_driver+0x63f/0x830 [ 141.391568][ C0] ? bus_for_each_drv+0x2c8/0x3f0 [ 141.391584][ C0] ? device_initial_probe+0x4a/0x60 [ 141.391600][ C0] ? device_add+0x2c15/0x31d0 [ 141.391615][ C0] ? process_one_work+0x1219/0x1fe0 [ 141.391632][ C0] ? kmsan_internal_set_origin+0x85/0xc0 [ 141.391650][ C0] ? kmsan_get_shadow_origin_ptr+0x84/0xb0 [ 141.391666][ C0] vprintk_emit+0x29a/0x7f0 [ 141.391681][ C0] vprintk_default+0x86/0xa0 [ 141.391696][ C0] vprintk_func+0x2ed/0x2f0 [ 141.391711][ C0] printk+0x180/0x1cd [ 141.391726][ C0] ? kmsan_get_shadow_origin_ptr+0x84/0xb0 [ 141.391742][ C0] sq905_read_data+0x630/0x650 [ 141.391757][ C0] sd_init+0x184/0x530 [ 141.391771][ C0] ? sd_config+0x1d0/0x1d0 [ 141.391787][ C0] gspca_dev_probe2+0x129f/0x23f0 [ 141.391802][ C0] gspca_dev_probe+0x3db/0x440 [ 141.391818][ C0] sd_probe+0x8d/0xa0 [ 141.391832][ C0] ? wait_status_1+0xf00/0xf00 [ 141.391848][ C0] usb_probe_interface+0xfcc/0x1520 [ 141.391864][ C0] ? usb_register_driver+0x900/0x900 [ 141.391880][ C0] really_probe+0xe15/0x24d0 [ 141.391896][ C0] driver_probe_device+0x29d/0x3a0 [ 141.391912][ C0] __device_attach_driver+0x63f/0x830 [ 141.391928][ C0] bus_for_each_drv+0x2c8/0x3f0 [ 141.391944][ C0] ? deferred_probe_work_func+0x400/0x400 [ 141.391961][ C0] __device_attach+0x56a/0x890 [ 141.391976][ C0] device_initial_probe+0x4a/0x60 [ 141.391992][ C0] bus_probe_device+0x17e/0x3d0 [ 141.392008][ C0] ? kmsan_get_shadow_origin_ptr+0x84/0xb0 [ 141.392025][ C0] device_add+0x2c15/0x31d0 [ 141.392040][ C0] usb_set_configuration+0x3872/0x3eb0 [ 141.392057][ C0] ? usb_set_configuration+0xa61/0x3eb0 [ 141.392074][ C0] ? __msan_metadata_ptr_for_load_1+0x10/0x20 [ 141.392092][ C0] usb_generic_driver_probe+0x138/0x300 [ 141.392109][ C0] ? usb_choose_configuration+0xee0/0xee0 [ 141.392126][ C0] usb_probe_device+0x317/0x570 [ 141.392142][ C0] ? usb_register_device_driver+0x590/0x590 [ 141.392159][ C0] really_probe+0xe15/0x24d0 [ 141.392175][ C0] driver_probe_device+0x29d/0x3a0 [ 141.392191][ C0] __device_attach_driver+0x63f/0x830 [ 141.392208][ C0] bus_for_each_drv+0x2c8/0x3f0 [ 141.392224][ C0] ? deferred_probe_work_func+0x400/0x400 [ 141.392241][ C0] __device_attach+0x56a/0x890 [ 141.392256][ C0] device_initial_probe+0x4a/0x60 [ 141.392272][ C0] bus_probe_device+0x17e/0x3d0 [ 141.392288][ C0] ? kmsan_get_shadow_origin_ptr+0x84/0xb0 [ 141.392305][ C0] device_add+0x2c15/0x31d0 [ 141.392320][ C0] usb_new_device+0x1bd4/0x2a30 [ 141.392340][ C0] hub_event+0x5b99/0x8870 [ 141.392372][ C0] ? kmsan_get_metadata+0x116/0x180 [ 141.392410][ C0] ? kmsan_get_metadata+0x116/0x180 [ 141.392445][ C0] ? kmsan_get_shadow_origin_ptr+0x84/0xb0 [ 141.392481][ C0] ? led_work+0x780/0x780 [ 141.392511][ C0] process_one_work+0x1219/0x1fe0 [ 141.392527][ C0] worker_thread+0x12bc/0x2340 [ 141.392542][ C0] kthread+0x521/0x560 [ 141.392556][ C0] ? process_one_work+0x1fe0/0x1fe0 [ 141.392572][ C0] ? kthread_blkcg+0x110/0x110 [ 141.392588][ C0] ret_from_fork+0x1f/0x30 [ 141.392602][ C0] [ 141.392615][ C0] Local variable ----act_len@sq905_read_data created at: [ 141.392635][ C0] sq905_read_data+0x87/0x650 [ 141.392651][ C0] sq905_read_data+0x87/0x650 [ 141.392668][ C0] ===================================================== [ 141.392689][ C0] ===================================================== [ 141.392709][ C0] BUG: KMSAN: uninit-value in number+0x8d9/0x2540 [ 141.392730][ C0] CPU: 0 PID: 1983 Comm: kworker/0:2 Tainted: G B 5.11.0-rc7-syzkaller #0 [ 141.392756][ C0] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 141.392780][ C0] Workqueue: usb_hub_wq hub_event [ 141.392807][ C0] Call Trace: [ 141.392820][ C0] dump_stack+0x21c/0x280 [ 141.392835][ C0] kmsan_report+0xfb/0x1e0 [ 141.392849][ C0] __msan_warning+0x5f/0xa0 [ 141.392864][ C0] number+0x8d9/0x2540 [ 141.392878][ C0] vsnprintf+0x1cd6/0x3600 [ 141.392893][ C0] vprintk_store+0x2ab/0x1df0 [ 141.392909][ C0] ? usb_set_configuration+0x3872/0x3eb0 [ 141.392925][ C0] ? usb_probe_device+0x317/0x570 [ 141.392941][ C0] ? driver_probe_device+0x29d/0x3a0 [ 141.392958][ C0] ? __device_attach_driver+0x63f/0x830 [ 141.392975][ C0] ? bus_for_each_drv+0x2c8/0x3f0 [ 141.392991][ C0] ? device_initial_probe+0x4a/0x60 [ 141.393007][ C0] ? device_add+0x2c15/0x31d0 [ 141.393022][ C0] ? process_one_work+0x1219/0x1fe0 [ 141.393038][ C0] ? kmsan_internal_set_origin+0x85/0xc0 [ 141.393056][ C0] ? kmsan_get_shadow_origin_ptr+0x84/0xb0 [ 141.393072][ C0] vprintk_emit+0x29a/0x7f0 [ 141.393087][ C0] vprintk_default+0x86/0xa0 [ 141.393102][ C0] vprintk_func+0x2ed/0x2f0 [ 141.393116][ C0] printk+0x180/0x1cd [ 141.393131][ C0] ? kmsan_get_shadow_origin_ptr+0x84/0xb0 [ 141.393148][ C0] sq905_read_data+0x630/0x650 [ 141.393163][ C0] sd_init+0x184/0x530 [ 141.393177][ C0] ? sd_config+0x1d0/0x1d0 [ 141.393192][ C0] gspca_dev_probe2+0x129f/0x23f0 [ 141.393208][ C0] gspca_dev_probe+0x3db/0x440 [ 141.393223][ C0] sd_probe+0x8d/0xa0 [ 141.393237][ C0] ? wait_status_1+0xf00/0xf00 [ 141.393252][ C0] usb_probe_interface+0xfcc/0x1520 [ 141.393269][ C0] ? usb_register_driver+0x900/0x900 [ 141.393284][ C0] really_probe+0xe15/0x24d0 [ 141.393300][ C0] driver_probe_device+0x29d/0x3a0 [ 141.393316][ C0] __device_attach_driver+0x63f/0x830 [ 141.393332][ C0] bus_for_each_drv+0x2c8/0x3f0 [ 141.393348][ C0] ? deferred_probe_work_func+0x400/0x400 [ 141.393365][ C0] __device_attach+0x56a/0x890 [ 141.393380][ C0] device_initial_probe+0x4a/0x60 [ 141.393401][ C0] bus_probe_device+0x17e/0x3d0 [ 141.393417][ C0] ? kmsan_get_shadow_origin_ptr+0x84/0xb0 [ 141.393434][ C0] device_add+0x2c15/0x31d0 [ 141.393449][ C0] usb_set_configuration+0x3872/0x3eb0 [ 141.393466][ C0] ? usb_set_configuration+0xa61/0x3eb0 [ 141.393483][ C0] ? __msan_metadata_ptr_for_load_1+0x10/0x20 [ 141.393511][ C0] usb_generic_driver_probe+0x138/0x300 [ 141.393546][ C0] ? usb_choose_configuration+0xee0/0xee0 [ 141.393582][ C0] usb_probe_device+0x317/0x570 [ 141.393617][ C0] ? usb_register_device_driver+0x590/0x590 [ 141.393654][ C0] really_probe+0xe15/0x24d0 [ 141.393676][ C0] driver_probe_device+0x29d/0x3a0 [ 141.393693][ C0] __device_attach_driver+0x63f/0x830 [ 141.393709][ C0] bus_for_each_drv+0x2c8/0x3f0 [ 141.393725][ C0] ? deferred_probe_work_func+0x400/0x400 [ 141.393742][ C0] __device_attach+0x56a/0x890 [ 141.393757][ C0] device_initial_probe+0x4a/0x60 [ 141.393773][ C0] bus_probe_device+0x17e/0x3d0 [ 141.393789][ C0] ? kmsan_get_shadow_origin_ptr+0x84/0xb0 [ 141.393806][ C0] device_add+0x2c15/0x31d0 [ 141.393821][ C0] usb_new_device+0x1bd4/0x2a30 [ 141.393836][ C0] hub_event+0x5b99/0x8870 [ 141.393851][ C0] ? kmsan_get_metadata+0x116/0x180 [ 141.393868][ C0] ? kmsan_get_metadata+0x116/0x180 [ 141.393884][ C0] ? kmsan_get_shadow_origin_ptr+0x84/0xb0 [ 141.393901][ C0] ? led_work+0x780/0x780 [ 141.393916][ C0] process_one_work+0x1219/0x1fe0 [ 141.393931][ C0] worker_thread+0x12bc/0x2340 [ 141.393946][ C0] kthread+0x521/0x560 [ 141.393961][ C0] ? process_one_work+0x1fe0/0x1fe0 [ 141.393977][ C0] ? kthread_blkcg+0x110/0x110 [ 141.393992][ C0] ret_from_fork+0x1f/0x30 [ 141.394005][ C0] [ 141.394019][ C0] Local variable ----act_len@sq905_read_data created at: [ 141.394038][ C0] sq905_read_data+0x87/0x650 [ 141.394054][ C0] sq905_read_data+0x87/0x650 [ 141.394071][ C0] ===================================================== [ 141.394092][ C0] ===================================================== [ 141.394112][ C0] BUG: KMSAN: uninit-value in put_dec+0x1dc/0x260 [ 141.394133][ C0] CPU: 0 PID: 1983 Comm: kworker/0:2 Tainted: G B 5.11.0-rc7-syzkaller #0 [ 141.394159][ C0] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 141.394183][ C0] Workqueue: usb_hub_wq hub_event [ 141.394210][ C0] Call Trace: [ 141.394223][ C0] dump_stack+0x21c/0x280 [ 141.394237][ C0] kmsan_report+0xfb/0x1e0 [ 141.394252][ C0] __msan_warning+0x5f/0xa0 [ 141.394266][ C0] put_dec+0x1dc/0x260 [ 141.394280][ C0] number+0x896/0x2540 [ 141.394294][ C0] vsnprintf+0x1cd6/0x3600 [ 141.394309][ C0] vprintk_store+0x2ab/0x1df0 [ 141.394325][ C0] ? usb_set_configuration+0x3872/0x3eb0 [ 141.394342][ C0] ? usb_probe_device+0x317/0x570 [ 141.394358][ C0] ? driver_probe_device+0x29d/0x3a0 [ 141.394374][ C0] ? __device_attach_driver+0x63f/0x830 [ 141.394395][ C0] ? bus_for_each_drv+0x2c8/0x3f0 [ 141.394411][ C0] ? device_initial_probe+0x4a/0x60 [ 141.394427][ C0] ? device_add+0x2c15/0x31d0 [ 141.394442][ C0] ? process_one_work+0x1219/0x1fe0 [ 141.394459][ C0] ? kmsan_internal_set_origin+0x85/0xc0 [ 141.394476][ C0] ? kmsan_get_shadow_origin_ptr+0x84/0xb0 [ 141.394493][ C0] vprintk_emit+0x29a/0x7f0 [ 141.394508][ C0] vprintk_default+0x86/0xa0 [ 141.394522][ C0] vprintk_func+0x2ed/0x2f0 [ 141.394537][ C0] printk+0x180/0x1cd [ 141.394551][ C0] ? kmsan_get_shadow_origin_ptr+0x84/0xb0 [ 141.394568][ C0] sq905_read_data+0x630/0x650 [ 141.394583][ C0] sd_init+0x184/0x530 [ 141.394597][ C0] ? sd_config+0x1d0/0x1d0 [ 141.394612][ C0] gspca_dev_probe2+0x129f/0x23f0 [ 141.394628][ C0] gspca_dev_probe+0x3db/0x440 [ 141.394643][ C0] sd_probe+0x8d/0xa0 [ 141.394662][ C0] ? wait_status_1+0xf00/0xf00 [ 141.394696][ C0] usb_probe_interface+0xfcc/0x1520 [ 141.394731][ C0] ? usb_register_driver+0x900/0x900 [ 141.394765][ C0] really_probe+0xe15/0x24d0 [ 141.394797][ C0] driver_probe_device+0x29d/0x3a0 [ 141.394830][ C0] __device_attach_driver+0x63f/0x830 [ 141.394848][ C0] bus_for_each_drv+0x2c8/0x3f0 [ 141.394864][ C0] ? deferred_probe_work_func+0x400/0x400 [ 141.394881][ C0] __device_attach+0x56a/0x890 [ 141.394896][ C0] device_initial_probe+0x4a/0x60 [ 141.394912][ C0] bus_probe_device+0x17e/0x3d0 [ 141.394928][ C0] ? kmsan_get_shadow_origin_ptr+0x84/0xb0 [ 141.394945][ C0] device_add+0x2c15/0x31d0 [ 141.394960][ C0] usb_set_configuration+0x3872/0x3eb0 [ 141.394977][ C0] ? usb_set_configuration+0xa61/0x3eb0 [ 141.394994][ C0] ? __msan_metadata_ptr_for_load_1+0x10/0x20 [ 141.395012][ C0] usb_generic_driver_probe+0x138/0x300 [ 141.395029][ C0] ? usb_choose_configuration+0xee0/0xee0 [ 141.395045][ C0] usb_probe_device+0x317/0x570 [ 141.395061][ C0] ? usb_register_device_driver+0x590/0x590 [ 141.395078][ C0] really_probe+0xe15/0x24d0 [ 141.395094][ C0] driver_probe_device+0x29d/0x3a0 [ 141.395110][ C0] __device_attach_driver+0x63f/0x830 [ 141.395126][ C0] bus_for_each_drv+0x2c8/0x3f0 [ 141.395142][ C0] ? deferred_probe_work_func+0x400/0x400 [ 141.395159][ C0] __device_attach+0x56a/0x890 [ 141.395174][ C0] device_initial_probe+0x4a/0x60 [ 141.395190][ C0] bus_probe_device+0x17e/0x3d0 [ 141.395206][ C0] ? kmsan_get_shadow_origin_ptr+0x84/0xb0 [ 141.395223][ C0] device_add+0x2c15/0x31d0 [ 141.395238][ C0] usb_new_device+0x1bd4/0x2a30 [ 141.395253][ C0] hub_event+0x5b99/0x8870 [ 141.395268][ C0] ? kmsan_get_metadata+0x116/0x180 [ 141.395284][ C0] ? kmsan_get_metadata+0x116/0x180 [ 141.395301][ C0] ? kmsan_get_shadow_origin_ptr+0x84/0xb0 [ 141.395318][ C0] ? led_work+0x780/0x780 [ 141.395333][ C0] process_one_work+0x1219/0x1fe0 [ 141.395348][ C0] worker_thread+0x12bc/0x2340 [ 141.395363][ C0] kthread+0x521/0x560 [ 141.395378][ C0] ? process_one_work+0x1fe0/0x1fe0 [ 141.395398][ C0] ? kthread_blkcg+0x110/0x110 [ 141.395413][ C0] ret_from_fork+0x1f/0x30 [ 141.395427][ C0] executing program [ 141.395440][ C0] Local variable ----act_len@sq905_read_data created at: [ 141.395460][ C0] sq905_read_data+0x87/0x650 [ 141.395476][ C0] sq905_read_data+0x87/0x650 [ 141.395493][ C0] ===================================================== [ 141.395513][ C0] ====================================== [ 141.395541][ C0] Lost 547 message(s)! [ 142.679279][ T1983] sq905: probe of 1-1:0.0 failed with error -5 [ 142.719119][ T1983] usb 1-1: USB disconnect, device number 3 [ 143.097444][ T1983] usb 1-1: new high-speed USB device number 4 using dummy_hcd [ 143.477834][ T1983] usb 1-1: New USB device found, idVendor=2770, idProduct=9120, bcdDevice=3a.ce [ 143.486952][ T1983] usb 1-1: New USB device strings: Mfr=0, Product=0, SerialNumber=0 [ 143.498298][ T1983] usb 1-1: config 0 descriptor?? [ 143.544151][ T1983] gspca_main: sq905-2.14.0 probing 2770:9120 [ 144.617650][ T1983] gspca_sq905: bulk read fail (-22) len -30591/4 [ 144.621215][ C0] ===================================================== [ 144.621239][ C0] BUG: KMSAN: uninit-value in number+0x54f/0x2540 [ 144.621261][ C0] CPU: 0 PID: 1983 Comm: kworker/0:2 Tainted: G B 5.11.0-rc7-syzkaller #0 [ 144.621287][ C0] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 144.621312][ C0] Workqueue: usb_hub_wq hub_event [ 144.621341][ C0] Call Trace: [ 144.621355][ C0] dump_stack+0x21c/0x280 [ 144.621369][ C0] kmsan_report+0xfb/0x1e0 [ 144.621384][ C0] __msan_warning+0x5f/0xa0 [ 144.621414][ C0] number+0x54f/0x2540 [ 144.621446][ C0] ? kmsan_internal_set_origin+0x85/0xc0 [ 144.621482][ C0] ? kmsan_get_metadata+0x116/0x180 [ 144.621517][ C0] vsnprintf+0x1cd6/0x3600 [ 144.621551][ C0] vprintk_store+0x2ab/0x1df0 [ 144.621584][ C0] ? usb_set_configuration+0x3872/0x3eb0 [ 144.621614][ C0] ? usb_probe_device+0x317/0x570 [ 144.621631][ C0] ? driver_probe_device+0x29d/0x3a0 [ 144.621648][ C0] ? __device_attach_driver+0x63f/0x830 [ 144.621665][ C0] ? bus_for_each_drv+0x2c8/0x3f0 [ 144.621681][ C0] ? device_initial_probe+0x4a/0x60 [ 144.621697][ C0] ? device_add+0x2c15/0x31d0 [ 144.621713][ C0] ? process_one_work+0x1219/0x1fe0 [ 144.621730][ C0] ? kmsan_internal_set_origin+0x85/0xc0 [ 144.621748][ C0] ? kmsan_get_shadow_origin_ptr+0x84/0xb0 [ 144.621764][ C0] vprintk_emit+0x29a/0x7f0 [ 144.621779][ C0] vprintk_default+0x86/0xa0 [ 144.621794][ C0] vprintk_func+0x2ed/0x2f0 [ 144.621809][ C0] printk+0x180/0x1cd [ 144.621824][ C0] ? kmsan_get_shadow_origin_ptr+0x84/0xb0 [ 144.621841][ C0] sq905_read_data+0x630/0x650 [ 144.621856][ C0] sd_init+0x184/0x530 [ 144.621870][ C0] ? sd_config+0x1d0/0x1d0 [ 144.621885][ C0] gspca_dev_probe2+0x129f/0x23f0 [ 144.621901][ C0] gspca_dev_probe+0x3db/0x440 [ 144.621915][ C0] sd_probe+0x8d/0xa0 [ 144.621930][ C0] ? wait_status_1+0xf00/0xf00 [ 144.621945][ C0] usb_probe_interface+0xfcc/0x1520 [ 144.621961][ C0] ? usb_register_driver+0x900/0x900 [ 144.621977][ C0] really_probe+0xe15/0x24d0 [ 144.621993][ C0] driver_probe_device+0x29d/0x3a0 [ 144.622009][ C0] __device_attach_driver+0x63f/0x830 [ 144.622025][ C0] bus_for_each_drv+0x2c8/0x3f0 [ 144.622041][ C0] ? deferred_probe_work_func+0x400/0x400 [ 144.622058][ C0] __device_attach+0x56a/0x890 [ 144.622073][ C0] device_initial_probe+0x4a/0x60 [ 144.622089][ C0] bus_probe_device+0x17e/0x3d0 [ 144.622105][ C0] ? kmsan_get_shadow_origin_ptr+0x84/0xb0 [ 144.622122][ C0] device_add+0x2c15/0x31d0 [ 144.622137][ C0] usb_set_configuration+0x3872/0x3eb0 [ 144.622154][ C0] ? usb_set_configuration+0xa61/0x3eb0 [ 144.622171][ C0] ? __msan_metadata_ptr_for_load_1+0x10/0x20 [ 144.622189][ C0] usb_generic_driver_probe+0x138/0x300 [ 144.622206][ C0] ? usb_choose_configuration+0xee0/0xee0 [ 144.622223][ C0] usb_probe_device+0x317/0x570 [ 144.622239][ C0] ? usb_register_device_driver+0x590/0x590 [ 144.622256][ C0] really_probe+0xe15/0x24d0 [ 144.622271][ C0] driver_probe_device+0x29d/0x3a0 [ 144.622287][ C0] __device_attach_driver+0x63f/0x830 [ 144.622304][ C0] bus_for_each_drv+0x2c8/0x3f0 [ 144.622320][ C0] ? deferred_probe_work_func+0x400/0x400 [ 144.622337][ C0] __device_attach+0x56a/0x890 [ 144.622353][ C0] device_initial_probe+0x4a/0x60 [ 144.622369][ C0] bus_probe_device+0x17e/0x3d0 [ 144.622385][ C0] ? kmsan_get_shadow_origin_ptr+0x84/0xb0 [ 144.622407][ C0] device_add+0x2c15/0x31d0 [ 144.622423][ C0] usb_new_device+0x1bd4/0x2a30 [ 144.622438][ C0] hub_event+0x5b99/0x8870 [ 144.622453][ C0] ? kmsan_get_metadata+0x116/0x180 [ 144.622470][ C0] ? kmsan_get_metadata+0x116/0x180 [ 144.622487][ C0] ? kmsan_get_shadow_origin_ptr+0x84/0xb0 [ 144.622504][ C0] ? led_work+0x780/0x780 [ 144.622518][ C0] process_one_work+0x1219/0x1fe0 [ 144.622534][ C0] worker_thread+0x12bc/0x2340 [ 144.622549][ C0] kthread+0x521/0x560 [ 144.622574][ C0] ? process_one_work+0x1fe0/0x1fe0 [ 144.622608][ C0] ? kthread_blkcg+0x110/0x110 [ 144.622640][ C0] ret_from_fork+0x1f/0x30 [ 144.622669][ C0] [ 144.622698][ C0] Local variable ----act_len@sq905_read_data created at: [ 144.622736][ C0] sq905_read_data+0x87/0x650 [ 144.622753][ C0] sq905_read_data+0x87/0x650 [ 144.622770][ C0] ===================================================== [ 144.622790][ C0] ===================================================== [ 144.622811][ C0] BUG: KMSAN: uninit-value in number+0x8d9/0x2540 [ 144.622832][ C0] CPU: 0 PID: 1983 Comm: kworker/0:2 Tainted: G B 5.11.0-rc7-syzkaller #0 [ 144.622858][ C0] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 144.622882][ C0] Workqueue: usb_hub_wq hub_event [ 144.622914][ C0] Call Trace: [ 144.622930][ C0] dump_stack+0x21c/0x280 [ 144.622945][ C0] kmsan_report+0xfb/0x1e0 [ 144.622959][ C0] __msan_warning+0x5f/0xa0 [ 144.622974][ C0] number+0x8d9/0x2540 [ 144.622988][ C0] vsnprintf+0x1cd6/0x3600 [ 144.623004][ C0] vprintk_store+0x2ab/0x1df0 [ 144.623020][ C0] ? usb_set_configuration+0x3872/0x3eb0 [ 144.623037][ C0] ? usb_probe_device+0x317/0x570 [ 144.623053][ C0] ? driver_probe_device+0x29d/0x3a0 [ 144.623069][ C0] ? __device_attach_driver+0x63f/0x830 [ 144.623086][ C0] ? bus_for_each_drv+0x2c8/0x3f0 [ 144.623102][ C0] ? device_initial_probe+0x4a/0x60 [ 144.623118][ C0] ? device_add+0x2c15/0x31d0 [ 144.623134][ C0] ? process_one_work+0x1219/0x1fe0 [ 144.623151][ C0] ? kmsan_internal_set_origin+0x85/0xc0 [ 144.623168][ C0] ? kmsan_get_shadow_origin_ptr+0x84/0xb0 [ 144.623185][ C0] vprintk_emit+0x29a/0x7f0 [ 144.623200][ C0] vprintk_default+0x86/0xa0 [ 144.623216][ C0] vprintk_func+0x2ed/0x2f0 [ 144.623230][ C0] printk+0x180/0x1cd [ 144.623245][ C0] ? kmsan_get_shadow_origin_ptr+0x84/0xb0 [ 144.623263][ C0] sq905_read_data+0x630/0x650 [ 144.623278][ C0] sd_init+0x184/0x530 [ 144.623293][ C0] ? sd_config+0x1d0/0x1d0 [ 144.623307][ C0] gspca_dev_probe2+0x129f/0x23f0 [ 144.623323][ C0] gspca_dev_probe+0x3db/0x440 [ 144.623338][ C0] sd_probe+0x8d/0xa0 [ 144.623352][ C0] ? wait_status_1+0xf00/0xf00 [ 144.623368][ C0] usb_probe_interface+0xfcc/0x1520 [ 144.623384][ C0] ? usb_register_driver+0x900/0x900 [ 144.623404][ C0] really_probe+0xe15/0x24d0 [ 144.623419][ C0] driver_probe_device+0x29d/0x3a0 [ 144.623435][ C0] __device_attach_driver+0x63f/0x830 [ 144.623452][ C0] bus_for_each_drv+0x2c8/0x3f0 [ 144.623468][ C0] ? deferred_probe_work_func+0x400/0x400 [ 144.623484][ C0] __device_attach+0x56a/0x890 [ 144.623500][ C0] device_initial_probe+0x4a/0x60 [ 144.623516][ C0] bus_probe_device+0x17e/0x3d0 [ 144.623532][ C0] ? kmsan_get_shadow_origin_ptr+0x84/0xb0 [ 144.623548][ C0] device_add+0x2c15/0x31d0 [ 144.623564][ C0] usb_set_configuration+0x3872/0x3eb0 [ 144.623581][ C0] ? usb_set_configuration+0xa61/0x3eb0 [ 144.623598][ C0] ? __msan_metadata_ptr_for_load_1+0x10/0x20 [ 144.623616][ C0] usb_generic_driver_probe+0x138/0x300 [ 144.623633][ C0] ? usb_choose_configuration+0xee0/0xee0 [ 144.623650][ C0] usb_probe_device+0x317/0x570 [ 144.623666][ C0] ? usb_register_device_driver+0x590/0x590 [ 144.623683][ C0] really_probe+0xe15/0x24d0 [ 144.623698][ C0] driver_probe_device+0x29d/0x3a0 [ 144.623715][ C0] __device_attach_driver+0x63f/0x830 [ 144.623748][ C0] bus_for_each_drv+0x2c8/0x3f0 [ 144.623781][ C0] ? deferred_probe_work_func+0x400/0x400 [ 144.623817][ C0] __device_attach+0x56a/0x890 [ 144.623850][ C0] device_initial_probe+0x4a/0x60 [ 144.623884][ C0] bus_probe_device+0x17e/0x3d0 [ 144.623905][ C0] ? kmsan_get_shadow_origin_ptr+0x84/0xb0 [ 144.623921][ C0] device_add+0x2c15/0x31d0 [ 144.623936][ C0] usb_new_device+0x1bd4/0x2a30 [ 144.623952][ C0] hub_event+0x5b99/0x8870 [ 144.623967][ C0] ? kmsan_get_metadata+0x116/0x180 [ 144.623983][ C0] ? kmsan_get_metadata+0x116/0x180 [ 144.624000][ C0] ? kmsan_get_shadow_origin_ptr+0x84/0xb0 [ 144.624017][ C0] ? led_work+0x780/0x780 [ 144.624032][ C0] process_one_work+0x1219/0x1fe0 [ 144.624047][ C0] worker_thread+0x12bc/0x2340 [ 144.624062][ C0] kthread+0x521/0x560 [ 144.624077][ C0] ? process_one_work+0x1fe0/0x1fe0 [ 144.624093][ C0] ? kthread_blkcg+0x110/0x110 [ 144.624108][ C0] ret_from_fork+0x1f/0x30 [ 144.624121][ C0] [ 144.624135][ C0] Local variable ----act_len@sq905_read_data created at: [ 144.624154][ C0] sq905_read_data+0x87/0x650 [ 144.624170][ C0] sq905_read_data+0x87/0x650 [ 144.624187][ C0] ===================================================== [ 144.624208][ C0] ===================================================== [ 144.624228][ C0] BUG: KMSAN: uninit-value in put_dec+0x1dc/0x260 [ 144.624250][ C0] CPU: 0 PID: 1983 Comm: kworker/0:2 Tainted: G B 5.11.0-rc7-syzkaller #0 [ 144.624276][ C0] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 144.624299][ C0] Workqueue: usb_hub_wq hub_event [ 144.624326][ C0] Call Trace: [ 144.624339][ C0] dump_stack+0x21c/0x280 [ 144.624353][ C0] kmsan_report+0xfb/0x1e0 [ 144.624368][ C0] __msan_warning+0x5f/0xa0 [ 144.624382][ C0] put_dec+0x1dc/0x260 [ 144.624401][ C0] number+0x896/0x2540 [ 144.624415][ C0] vsnprintf+0x1cd6/0x3600 [ 144.624430][ C0] vprintk_store+0x2ab/0x1df0 [ 144.624445][ C0] ? usb_set_configuration+0x3872/0x3eb0 [ 144.624462][ C0] ? usb_probe_device+0x317/0x570 [ 144.624478][ C0] ? driver_probe_device+0x29d/0x3a0 [ 144.624495][ C0] ? __device_attach_driver+0x63f/0x830 [ 144.624511][ C0] ? bus_for_each_drv+0x2c8/0x3f0 [ 144.624527][ C0] ? device_initial_probe+0x4a/0x60 [ 144.624543][ C0] ? device_add+0x2c15/0x31d0 [ 144.624559][ C0] ? process_one_work+0x1219/0x1fe0 [ 144.624575][ C0] ? kmsan_internal_set_origin+0x85/0xc0 [ 144.624593][ C0] ? kmsan_get_shadow_origin_ptr+0x84/0xb0 [ 144.624609][ C0] vprintk_emit+0x29a/0x7f0 [ 144.624624][ C0] vprintk_default+0x86/0xa0 [ 144.624639][ C0] vprintk_func+0x2ed/0x2f0 [ 144.624653][ C0] printk+0x180/0x1cd [ 144.624668][ C0] ? kmsan_get_shadow_origin_ptr+0x84/0xb0 [ 144.624685][ C0] sq905_read_data+0x630/0x650 [ 144.624700][ C0] sd_init+0x184/0x530 [ 144.624714][ C0] ? sd_config+0x1d0/0x1d0 [ 144.624729][ C0] gspca_dev_probe2+0x129f/0x23f0 [ 144.624744][ C0] gspca_dev_probe+0x3db/0x440 [ 144.624759][ C0] sd_probe+0x8d/0xa0 [ 144.624773][ C0] ? wait_status_1+0xf00/0xf00 [ 144.624789][ C0] usb_probe_interface+0xfcc/0x1520 [ 144.624806][ C0] ? usb_register_driver+0x900/0x900 [ 144.624821][ C0] really_probe+0xe15/0x24d0 [ 144.624837][ C0] driver_probe_device+0x29d/0x3a0 [ 144.624853][ C0] __device_attach_driver+0x63f/0x830 [ 144.624869][ C0] bus_for_each_drv+0x2c8/0x3f0 [ 144.624896][ C0] ? deferred_probe_work_func+0x400/0x400 [ 144.624929][ C0] __device_attach+0x56a/0x890 [ 144.624962][ C0] device_initial_probe+0x4a/0x60 [ 144.624996][ C0] bus_probe_device+0x17e/0x3d0 [ 144.625030][ C0] ? kmsan_get_shadow_origin_ptr+0x84/0xb0 [ 144.625064][ C0] device_add+0x2c15/0x31d0 [ 144.625082][ C0] usb_set_configuration+0x3872/0x3eb0 [ 144.625099][ C0] ? usb_set_configuration+0xa61/0x3eb0 [ 144.625116][ C0] ? __msan_metadata_ptr_for_load_1+0x10/0x20 [ 144.625134][ C0] usb_generic_driver_probe+0x138/0x300 [ 144.625151][ C0] ? usb_choose_configuration+0xee0/0xee0 [ 144.625168][ C0] usb_probe_device+0x317/0x570 [ 144.625184][ C0] ? usb_register_device_driver+0x590/0x590 [ 144.625201][ C0] really_probe+0xe15/0x24d0 [ 144.625216][ C0] driver_probe_device+0x29d/0x3a0 [ 144.625232][ C0] __device_attach_driver+0x63f/0x830 [ 144.625248][ C0] bus_for_each_drv+0x2c8/0x3f0 [ 144.625264][ C0] ? deferred_probe_work_func+0x400/0x400 [ 144.625281][ C0] __device_attach+0x56a/0x890 [ 144.625296][ C0] device_initial_probe+0x4a/0x60 [ 144.625312][ C0] bus_probe_device+0x17e/0x3d0 [ 144.625328][ C0] ? kmsan_get_shadow_origin_ptr+0x84/0xb0 [ 144.625345][ C0] device_add+0x2c15/0x31d0 [ 144.625360][ C0] usb_new_device+0x1bd4/0x2a30 [ 144.625375][ C0] hub_event+0x5b99/0x8870 [ 144.625390][ C0] ? kmsan_get_metadata+0x116/0x180 [ 144.625411][ C0] ? kmsan_get_metadata+0x116/0x180 [ 144.625427][ C0] ? kmsan_get_shadow_origin_ptr+0x84/0xb0 [ 144.625444][ C0] ? led_work+0x780/0x780 [ 144.625459][ C0] process_one_work+0x1219/0x1fe0 [ 144.625475][ C0] worker_thread+0x12bc/0x2340 [ 144.625490][ C0] kthread+0x521/0x560 [ 144.625504][ C0] ? process_one_work+0x1fe0/0x1fe0 [ 144.625520][ C0] ? kthread_blkcg+0x110/0x110 [ 144.625536][ C0] ret_from_fork+0x1f/0x30 [ 144.625549][ C0] [ 144.625563][ C0] Local variable ----act_len@sq905_read_data created at: [ 144.625583][ C0] sq905_read_data+0x87/0x650 [ 144.625599][ C0] sq905_read_data+0x87/0x650 [ 144.625616][ C0] ===================================================== [ 144.625636][ C0] ====================================== [ 144.625664][ C0] Lost 547 message(s)! [ 145.931999][ T1983] sq905: probe of 1-1:0.0 failed with error -5 executing program [ 146.078506][ T1983] usb 1-1: USB disconnect, device number 4 [ 146.447240][ T1983] usb 1-1: new high-speed USB device number 5 using dummy_hcd [ 146.817428][ T1983] usb 1-1: New USB device found, idVendor=2770, idProduct=9120, bcdDevice=3a.ce [ 146.826575][ T1983] usb 1-1: New USB device strings: Mfr=0, Product=0, SerialNumber=0 [ 146.837980][ T1983] usb 1-1: config 0 descriptor?? [ 146.883954][ T1983] gspca_main: sq905-2.14.0 probing 2770:9120 [ 147.967284][ T1983] gspca_sq905: bulk read fail (-22) len -30591/4 [ 147.970478][ C0] ===================================================== [ 147.970501][ C0] BUG: KMSAN: uninit-value in number+0x54f/0x2540 [ 147.970524][ C0] CPU: 0 PID: 1983 Comm: kworker/0:2 Tainted: G B 5.11.0-rc7-syzkaller #0 [ 147.970550][ C0] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 147.970574][ C0] Workqueue: usb_hub_wq hub_event [ 147.970604][ C0] Call Trace: [ 147.970617][ C0] dump_stack+0x21c/0x280 [ 147.970631][ C0] kmsan_report+0xfb/0x1e0 [ 147.970647][ C0] __msan_warning+0x5f/0xa0 [ 147.970661][ C0] number+0x54f/0x2540 [ 147.970676][ C0] ? kmsan_internal_set_origin+0x85/0xc0 [ 147.970694][ C0] ? kmsan_get_metadata+0x116/0x180 [ 147.970710][ C0] vsnprintf+0x1cd6/0x3600 [ 147.970725][ C0] vprintk_store+0x2ab/0x1df0 [ 147.970741][ C0] ? usb_set_configuration+0x3872/0x3eb0 [ 147.970757][ C0] ? usb_probe_device+0x317/0x570