usb 1-1: 0:6 : does not exist usb 1-1: 0:7 : does not exist usb 1-1: 0:8 : does not exist usb 1-1: 0:9 : does not exist usb 1-1: 0:10 : does not exist usb 1-1: Focusrite Scarlett Gen 3 Mixer Driver enabled (pid=0x8215); report any issues to https://github.com/geoffreybennett/scarlett-gen2/issues Oops: general protection fault, probably for non-canonical address 0xdffffc0000000000: 0000 [#1] SMP KASAN PTI KASAN: null-ptr-deref in range [0x0000000000000000-0x0000000000000007] CPU: 1 UID: 0 PID: 5882 Comm: kworker/1:4 Not tainted syzkaller #0 PREEMPT(full) Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 02/12/2026 Workqueue: usb_hub_wq hub_event RIP: 0010:usb_endpoint_num include/uapi/linux/usb/ch9.h:479 [inline] RIP: 0010:scarlett2_find_fc_interface sound/usb/mixer_scarlett2.c:8257 [inline] RIP: 0010:scarlett2_init_private sound/usb/mixer_scarlett2.c:8291 [inline] RIP: 0010:snd_scarlett2_controls_create+0x998/0x4f70 sound/usb/mixer_scarlett2.c:8680 Code: 10 4c 8d b2 48 02 00 00 4c 89 f0 48 c1 e8 03 42 0f b6 04 20 84 c0 0f 85 ea 31 00 00 45 88 3e 4c 8d 73 02 4c 89 f0 48 c1 e8 03 <42> 0f b6 04 20 84 c0 48 8b 7c 24 38 0f 85 ea 31 00 00 45 0f b6 3e RSP: 0018:ffffc900038164c0 EFLAGS: 00010246 RAX: 0000000000000000 RBX: 0000000000000000 RCX: 0000000000000000 RDX: ffff88802eb44000 RSI: 00000000000000ff RDI: ffff888034ce15a0 RBP: ffffc900038168d8 R08: ffffffff8cd90234 R09: ffffffff8cd90248 R10: dffffc0000000000 R11: fffffbfff20684b7 R12: dffffc0000000000 R13: ffff888034ce158a R14: 0000000000000002 R15: 0000000000000001 FS: 0000000000000000(0000) GS:ffff8881250f5000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 000055d8933ef7a0 CR3: 0000000074b2e000 CR4: 00000000003526f0 Call Trace: snd_scarlett2_init+0x42f/0x6a0 sound/usb/mixer_scarlett2.c:9403 snd_usb_mixer_apply_create_quirk+0x15a8/0x1be0 sound/usb/mixer_quirks.c:4446 snd_usb_create_mixer+0x1b5d/0x2890 sound/usb/mixer.c:3641 usb_audio_probe+0x1874/0x2330 sound/usb/card.c:1033 usb_probe_interface+0x668/0xc90 drivers/usb/core/driver.c:396 call_driver_probe drivers/base/dd.c:-1 [inline] really_probe+0x267/0xaf0 drivers/base/dd.c:661 __driver_probe_device+0x18c/0x320 drivers/base/dd.c:803 driver_probe_device+0x4f/0x240 drivers/base/dd.c:833 __device_attach_driver+0x2d4/0x4c0 drivers/base/dd.c:961 bus_for_each_drv+0x258/0x2f0 drivers/base/bus.c:500 __device_attach+0x2c5/0x450 drivers/base/dd.c:1033 device_initial_probe+0xa1/0xd0 drivers/base/dd.c:1088 bus_probe_device+0x12a/0x220 drivers/base/bus.c:574 device_add+0x7b6/0xb70 drivers/base/core.c:3689 usb_set_configuration+0x1a87/0x2110 drivers/usb/core/message.c:2208 usb_generic_driver_probe+0x8d/0x150 drivers/usb/core/generic.c:250 usb_probe_device+0x1c4/0x3b0 drivers/usb/core/driver.c:291 call_driver_probe drivers/base/dd.c:-1 [inline] really_probe+0x267/0xaf0 drivers/base/dd.c:661 __driver_probe_device+0x18c/0x320 drivers/base/dd.c:803 driver_probe_device+0x4f/0x240 drivers/base/dd.c:833 __device_attach_driver+0x2d4/0x4c0 drivers/base/dd.c:961 bus_for_each_drv+0x258/0x2f0 drivers/base/bus.c:500 __device_attach+0x2c5/0x450 drivers/base/dd.c:1033 device_initial_probe+0xa1/0xd0 drivers/base/dd.c:1088 bus_probe_device+0x12a/0x220 drivers/base/bus.c:574 device_add+0x7b6/0xb70 drivers/base/core.c:3689 usb_new_device+0xa08/0x16f0 drivers/usb/core/hub.c:2695 hub_port_connect drivers/usb/core/hub.c:5567 [inline] hub_port_connect_change drivers/usb/core/hub.c:5707 [inline] port_event drivers/usb/core/hub.c:5871 [inline] hub_event+0x2a1c/0x4f30 drivers/usb/core/hub.c:5953 process_one_work+0x963/0x1720 kernel/workqueue.c:3285 process_scheduled_works kernel/workqueue.c:3376 [inline] worker_thread+0xb46/0x1140 kernel/workqueue.c:3457 kthread+0x388/0x470 kernel/kthread.c:436 ret_from_fork+0x51e/0xb90 arch/x86/kernel/process.c:158 ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:245 Modules linked in: ---[ end trace 0000000000000000 ]--- RIP: 0010:usb_endpoint_num include/uapi/linux/usb/ch9.h:479 [inline] RIP: 0010:scarlett2_find_fc_interface sound/usb/mixer_scarlett2.c:8257 [inline] RIP: 0010:scarlett2_init_private sound/usb/mixer_scarlett2.c:8291 [inline] RIP: 0010:snd_scarlett2_controls_create+0x998/0x4f70 sound/usb/mixer_scarlett2.c:8680 Code: 10 4c 8d b2 48 02 00 00 4c 89 f0 48 c1 e8 03 42 0f b6 04 20 84 c0 0f 85 ea 31 00 00 45 88 3e 4c 8d 73 02 4c 89 f0 48 c1 e8 03 <42> 0f b6 04 20 84 c0 48 8b 7c 24 38 0f 85 ea 31 00 00 45 0f b6 3e RSP: 0018:ffffc900038164c0 EFLAGS: 00010246 RAX: 0000000000000000 RBX: 0000000000000000 RCX: 0000000000000000 RDX: ffff88802eb44000 RSI: 00000000000000ff RDI: ffff888034ce15a0 RBP: ffffc900038168d8 R08: ffffffff8cd90234 R09: ffffffff8cd90248 R10: dffffc0000000000 R11: fffffbfff20684b7 R12: dffffc0000000000 R13: ffff888034ce158a R14: 0000000000000002 R15: 0000000000000001 FS: 0000000000000000(0000) GS:ffff8881250f5000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00001ac5af4d74b8 CR3: 0000000071e50000 CR4: 00000000003526f0 ---------------- Code disassembly (best guess): 0: 10 4c 8d b2 adc %cl,-0x4e(%rbp,%rcx,4) 4: 48 02 00 rex.W add (%rax),%al 7: 00 4c 89 f0 add %cl,-0x10(%rcx,%rcx,4) b: 48 c1 e8 03 shr $0x3,%rax f: 42 0f b6 04 20 movzbl (%rax,%r12,1),%eax 14: 84 c0 test %al,%al 16: 0f 85 ea 31 00 00 jne 0x3206 1c: 45 88 3e mov %r15b,(%r14) 1f: 4c 8d 73 02 lea 0x2(%rbx),%r14 23: 4c 89 f0 mov %r14,%rax 26: 48 c1 e8 03 shr $0x3,%rax * 2a: 42 0f b6 04 20 movzbl (%rax,%r12,1),%eax <-- trapping instruction 2f: 84 c0 test %al,%al 31: 48 8b 7c 24 38 mov 0x38(%rsp),%rdi 36: 0f 85 ea 31 00 00 jne 0x3226 3c: 45 0f b6 3e movzbl (%r14),%r15d