dvb-usb: bulk message failed: -22 (5/0) dvb-usb: bulk message failed: -22 (5/0) dvb-usb: bulk message failed: -22 (5/0) ===================================================== BUG: KMSAN: uninit-value in mac_address_string+0x1040/0x1170 lib/vsprintf.c:1281 CPU: 1 PID: 3760 Comm: kworker/1:2 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+0xf7/0x1e0 mm/kmsan/kmsan_report.c:118 __msan_warning+0x5f/0xa0 mm/kmsan/kmsan_instr.c:197 mac_address_string+0x1040/0x1170 lib/vsprintf.c:1281 pointer+0x9fe/0x1ca0 lib/vsprintf.c:2241 vsnprintf+0x1a4f/0x3610 lib/vsprintf.c:2622 vscnprintf+0xbe/0x1c0 lib/vsprintf.c:2721 vprintk_store+0xff/0x14a0 kernel/printk/printk.c:1954 vprintk_emit+0x2ae/0x820 kernel/printk/printk.c:2018 vprintk_default+0x86/0xa0 kernel/printk/printk.c:2052 vprintk_func+0x2ed/0x2f0 kernel/printk/printk_safe.c:393 printk+0x180/0x1cd kernel/printk/printk.c:2083 dvb_usb_adapter_dvb_init+0x818/0x1300 drivers/media/usb/dvb-usb/dvb-usb-dvb.c:166 dvb_usb_adapter_init drivers/media/usb/dvb-usb/dvb-usb-init.c:83 [inline] dvb_usb_init drivers/media/usb/dvb-usb/dvb-usb-init.c:173 [inline] dvb_usb_device_init+0x27fd/0x3350 drivers/media/usb/dvb-usb/dvb-usb-init.c:287 nova_t_probe+0x73/0x80 drivers/media/usb/dvb-usb/nova-t-usb2.c:156 usb_probe_interface+0xfcc/0x1520 drivers/usb/core/driver.c:396 really_probe+0xebd/0x2420 drivers/base/dd.c:558 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:2936 usb_set_configuration+0x39cf/0x4010 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+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:2936 usb_new_device+0x1bd6/0x2a30 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+0x5bc9/0x8890 drivers/usb/core/hub.c:5590 process_one_work+0x121c/0x1fc0 kernel/workqueue.c:2272 worker_thread+0x10cc/0x2740 kernel/workqueue.c:2418 kthread+0x51c/0x560 kernel/kthread.c:292 ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:296 Uninit was stored to memory at: kmsan_save_stack_with_flags mm/kmsan/kmsan.c:121 [inline] kmsan_internal_chain_origin+0xad/0x130 mm/kmsan/kmsan.c:289 __msan_chain_origin+0x57/0xa0 mm/kmsan/kmsan_instr.c:147 nova_t_read_mac_address+0x2d4/0x2f0 drivers/media/usb/dvb-usb/nova-t-usb2.c:144 dvb_usb_adapter_dvb_init+0x774/0x1300 drivers/media/usb/dvb-usb/dvb-usb-dvb.c:165 dvb_usb_adapter_init drivers/media/usb/dvb-usb/dvb-usb-init.c:83 [inline] dvb_usb_init drivers/media/usb/dvb-usb/dvb-usb-init.c:173 [inline] dvb_usb_device_init+0x27fd/0x3350 drivers/media/usb/dvb-usb/dvb-usb-init.c:287 nova_t_probe+0x73/0x80 drivers/media/usb/dvb-usb/nova-t-usb2.c:156 usb_probe_interface+0xfcc/0x1520 drivers/usb/core/driver.c:396 really_probe+0xebd/0x2420 drivers/base/dd.c:558 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:2936 usb_set_configuration+0x39cf/0x4010 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+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:2936 usb_new_device+0x1bd6/0x2a30 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+0x5bc9/0x8890 drivers/usb/core/hub.c:5590 process_one_work+0x121c/0x1fc0 kernel/workqueue.c:2272 worker_thread+0x10cc/0x2740 kernel/workqueue.c:2418 kthread+0x51c/0x560 kernel/kthread.c:292 ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:296 Uninit was stored to memory at: kmsan_save_stack_with_flags mm/kmsan/kmsan.c:121 [inline] kmsan_internal_chain_origin+0xad/0x130 mm/kmsan/kmsan.c:289 __msan_chain_origin+0x57/0xa0 mm/kmsan/kmsan_instr.c:147 dibusb_read_eeprom_byte+0x513/0x540 drivers/media/usb/dvb-usb/dibusb-common.c:233 nova_t_read_mac_address+0x1e3/0x2f0 drivers/media/usb/dvb-usb/nova-t-usb2.c:142 dvb_usb_adapter_dvb_init+0x774/0x1300 drivers/media/usb/dvb-usb/dvb-usb-dvb.c:165 dvb_usb_adapter_init drivers/media/usb/dvb-usb/dvb-usb-init.c:83 [inline] dvb_usb_init drivers/media/usb/dvb-usb/dvb-usb-init.c:173 [inline] dvb_usb_device_init+0x27fd/0x3350 drivers/media/usb/dvb-usb/dvb-usb-init.c:287 nova_t_probe+0x73/0x80 drivers/media/usb/dvb-usb/nova-t-usb2.c:156 usb_probe_interface+0xfcc/0x1520 drivers/usb/core/driver.c:396 really_probe+0xebd/0x2420 drivers/base/dd.c:558 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:2936 usb_set_configuration+0x39cf/0x4010 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+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:2936 usb_new_device+0x1bd6/0x2a30 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+0x5bc9/0x8890 drivers/usb/core/hub.c:5590 process_one_work+0x121c/0x1fc0 kernel/workqueue.c:2272 worker_thread+0x10cc/0x2740 kernel/workqueue.c:2418 kthread+0x51c/0x560 kernel/kthread.c:292 ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:296 Uninit was created at: kmsan_save_stack_with_flags mm/kmsan/kmsan.c:121 [inline] kmsan_internal_poison_shadow+0x5c/0xf0 mm/kmsan/kmsan.c:104 kmsan_slab_alloc+0x8d/0xe0 mm/kmsan/kmsan_hooks.c:76 slab_alloc_node mm/slub.c:2906 [inline] slab_alloc mm/slub.c:2915 [inline] kmem_cache_alloc_trace+0x869/0x1020 mm/slub.c:2932 kmalloc include/linux/slab.h:552 [inline] dibusb_read_eeprom_byte+0xad/0x540 drivers/media/usb/dvb-usb/dibusb-common.c:226 nova_t_read_mac_address+0x1e3/0x2f0 drivers/media/usb/dvb-usb/nova-t-usb2.c:142 dvb_usb_adapter_dvb_init+0x774/0x1300 drivers/media/usb/dvb-usb/dvb-usb-dvb.c:165 dvb_usb_adapter_init drivers/media/usb/dvb-usb/dvb-usb-init.c:83 [inline] dvb_usb_init drivers/media/usb/dvb-usb/dvb-usb-init.c:173 [inline] dvb_usb_device_init+0x27fd/0x3350 drivers/media/usb/dvb-usb/dvb-usb-init.c:287 nova_t_probe+0x73/0x80 drivers/media/usb/dvb-usb/nova-t-usb2.c:156 usb_probe_interface+0xfcc/0x1520 drivers/usb/core/driver.c:396 really_probe+0xebd/0x2420 drivers/base/dd.c:558 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:2936 usb_set_configuration+0x39cf/0x4010 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+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:2936 usb_new_device+0x1bd6/0x2a30 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+0x5bc9/0x8890 drivers/usb/core/hub.c:5590 process_one_work+0x121c/0x1fc0 kernel/workqueue.c:2272 worker_thread+0x10cc/0x2740 kernel/workqueue.c:2418 kthread+0x51c/0x560 kernel/kthread.c:292 ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:296 =====================================================