=====================================================
BUG: KMSAN: uninit-value in line6_midibuf_read+0x76b/0x1050 sound/usb/line6/midibuf.c:185
 line6_midibuf_read+0x76b/0x1050 sound/usb/line6/midibuf.c:185
 line6_data_received+0x503/0xa80 sound/usb/line6/driver.c:310
 __usb_hcd_giveback_urb+0x572/0x840 drivers/usb/core/hcd.c:1650
 usb_hcd_giveback_urb+0x157/0x720 drivers/usb/core/hcd.c:1734
 dummy_timer+0xd3f/0x6aa0 drivers/usb/gadget/udc/dummy_hcd.c:1987
 __run_hrtimer kernel/time/hrtimer.c:1689 [inline]
 __hrtimer_run_queues+0x564/0xe40 kernel/time/hrtimer.c:1753
 hrtimer_interrupt+0x3ab/0x1490 kernel/time/hrtimer.c:1815
 local_apic_timer_interrupt arch/x86/kernel/apic/apic.c:1032 [inline]
 __sysvec_apic_timer_interrupt+0xa6/0x3a0 arch/x86/kernel/apic/apic.c:1049
 instr_sysvec_apic_timer_interrupt arch/x86/kernel/apic/apic.c:1043 [inline]
 sysvec_apic_timer_interrupt+0x7e/0x90 arch/x86/kernel/apic/apic.c:1043
 asm_sysvec_apic_timer_interrupt+0x1f/0x30 arch/x86/include/asm/idtentry.h:702
 queue_delayed_work_on+0x24f/0x350 kernel/workqueue.c:2559
 queue_delayed_work include/linux/workqueue.h:636 [inline]
 schedule_delayed_work include/linux/workqueue.h:776 [inline]
 pod_init+0x362/0x3a0 sound/usb/line6/pod.c:401
 line6_probe+0xf1f/0x1120 sound/usb/line6/driver.c:808
 pod_probe+0x79/0x90 sound/usb/line6/pod.c:522
 usb_probe_interface+0xd6f/0x1350 drivers/usb/core/driver.c:399
 really_probe+0x4db/0xd90 drivers/base/dd.c:657
 __driver_probe_device+0x2ab/0x5d0 drivers/base/dd.c:799
 driver_probe_device+0x72/0x890 drivers/base/dd.c:829
 __device_attach_driver+0x568/0x9e0 drivers/base/dd.c:957
 bus_for_each_drv+0x403/0x620 drivers/base/bus.c:457
 __device_attach+0x3c1/0x650 drivers/base/dd.c:1029
 device_initial_probe+0x32/0x40 drivers/base/dd.c:1078
 bus_probe_device+0x3dc/0x5c0 drivers/base/bus.c:532
 device_add+0x13aa/0x1ba0 drivers/base/core.c:3682
 usb_set_configuration+0x31c9/0x38d0 drivers/usb/core/message.c:2210
 usb_generic_driver_probe+0x109/0x2a0 drivers/usb/core/generic.c:254
 usb_probe_device+0x3a7/0x690 drivers/usb/core/driver.c:294
 really_probe+0x4db/0xd90 drivers/base/dd.c:657
 __driver_probe_device+0x2ab/0x5d0 drivers/base/dd.c:799
 driver_probe_device+0x72/0x890 drivers/base/dd.c:829
 __device_attach_driver+0x568/0x9e0 drivers/base/dd.c:957
 bus_for_each_drv+0x403/0x620 drivers/base/bus.c:457
 __device_attach+0x3c1/0x650 drivers/base/dd.c:1029
 device_initial_probe+0x32/0x40 drivers/base/dd.c:1078
 bus_probe_device+0x3dc/0x5c0 drivers/base/bus.c:532
 device_add+0x13aa/0x1ba0 drivers/base/core.c:3682
 usb_new_device+0x15f4/0x2470 drivers/usb/core/hub.c:2651
 hub_port_connect drivers/usb/core/hub.c:5521 [inline]
 hub_port_connect_change drivers/usb/core/hub.c:5661 [inline]
 port_event drivers/usb/core/hub.c:5821 [inline]
 hub_event+0x4ffb/0x72d0 drivers/usb/core/hub.c:5903
 process_one_work kernel/workqueue.c:3231 [inline]
 process_scheduled_works+0xae0/0x1c40 kernel/workqueue.c:3312
 worker_thread+0xea5/0x1520 kernel/workqueue.c:3390
 kthread+0x3dd/0x540 kernel/kthread.c:389
 ret_from_fork+0x6d/0x90 arch/x86/kernel/process.c:147
 ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:244

Uninit was created at:
 slab_post_alloc_hook mm/slub.c:3994 [inline]
 slab_alloc_node mm/slub.c:4037 [inline]
 __do_kmalloc_node mm/slub.c:4157 [inline]
 __kmalloc_noprof+0x661/0xf30 mm/slub.c:4170
 kmalloc_noprof include/linux/slab.h:685 [inline]
 line6_midibuf_init+0x43/0x180 sound/usb/line6/midibuf.c:51
 line6_init_midi+0x3e7/0x670 sound/usb/line6/midi.c:284
 line6_init_cap_control+0x54e/0x770 sound/usb/line6/driver.c:709
 line6_probe+0xeae/0x1120 sound/usb/line6/driver.c:802
 pod_probe+0x79/0x90 sound/usb/line6/pod.c:522
 usb_probe_interface+0xd6f/0x1350 drivers/usb/core/driver.c:399
 really_probe+0x4db/0xd90 drivers/base/dd.c:657
 __driver_probe_device+0x2ab/0x5d0 drivers/base/dd.c:799
 driver_probe_device+0x72/0x890 drivers/base/dd.c:829
 __device_attach_driver+0x568/0x9e0 drivers/base/dd.c:957
 bus_for_each_drv+0x403/0x620 drivers/base/bus.c:457
 __device_attach+0x3c1/0x650 drivers/base/dd.c:1029
 device_initial_probe+0x32/0x40 drivers/base/dd.c:1078
 bus_probe_device+0x3dc/0x5c0 drivers/base/bus.c:532
 device_add+0x13aa/0x1ba0 drivers/base/core.c:3682
 usb_set_configuration+0x31c9/0x38d0 drivers/usb/core/message.c:2210
 usb_generic_driver_probe+0x109/0x2a0 drivers/usb/core/generic.c:254
 usb_probe_device+0x3a7/0x690 drivers/usb/core/driver.c:294
 really_probe+0x4db/0xd90 drivers/base/dd.c:657
 __driver_probe_device+0x2ab/0x5d0 drivers/base/dd.c:799
 driver_probe_device+0x72/0x890 drivers/base/dd.c:829
 __device_attach_driver+0x568/0x9e0 drivers/base/dd.c:957
 bus_for_each_drv+0x403/0x620 drivers/base/bus.c:457
 __device_attach+0x3c1/0x650 drivers/base/dd.c:1029
 device_initial_probe+0x32/0x40 drivers/base/dd.c:1078
 bus_probe_device+0x3dc/0x5c0 drivers/base/bus.c:532
 device_add+0x13aa/0x1ba0 drivers/base/core.c:3682
 usb_new_device+0x15f4/0x2470 drivers/usb/core/hub.c:2651
 hub_port_connect drivers/usb/core/hub.c:5521 [inline]
 hub_port_connect_change drivers/usb/core/hub.c:5661 [inline]
 port_event drivers/usb/core/hub.c:5821 [inline]
 hub_event+0x4ffb/0x72d0 drivers/usb/core/hub.c:5903
 process_one_work kernel/workqueue.c:3231 [inline]
 process_scheduled_works+0xae0/0x1c40 kernel/workqueue.c:3312
 worker_thread+0xea5/0x1520 kernel/workqueue.c:3390
 kthread+0x3dd/0x540 kernel/kthread.c:389
 ret_from_fork+0x6d/0x90 arch/x86/kernel/process.c:147
 ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:244

CPU: 0 UID: 0 PID: 8 Comm: kworker/0:0 Not tainted 6.11.0-rc3-syzkaller-00156-gd7a5aa4b3c00 #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 06/27/2024
Workqueue: usb_hub_wq hub_event
=====================================================