usb 3-1: 0:6 : does not exist
usb 3-1: 0:7 : does not exist
usb 3-1: 0:8 : does not exist
usb 3-1: 0:9 : does not exist
usb 3-1: 0:10 : does not exist
usb 3-1: 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] PREEMPT SMP KASAN PTI
KASAN: null-ptr-deref in range [0x0000000000000000-0x0000000000000007]
CPU: 0 UID: 0 PID: 336 Comm: kworker/0:2 Not tainted syzkaller #0 e0984ef4b19b7a0d2e0df0f24afaf737f1320d97
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 02/12/2026
Workqueue: usb_hub_wq hub_event
RIP: 0010:scarlett2_find_fc_interface sound/usb/mixer_scarlett2.c:8589 [inline]
RIP: 0010:scarlett2_init_private sound/usb/mixer_scarlett2.c:8624 [inline]
RIP: 0010:snd_scarlett2_controls_create+0x96d/0x50d0 sound/usb/mixer_scarlett2.c:9013
Code: 10 4c 8d b2 10 01 00 00 4c 89 f0 48 c1 e8 03 42 0f b6 04 20 84 c0 0f 85 eb 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 eb 31 00 00 45 0f b6 3e
RSP: 0018:ffffc90001b5e640 EFLAGS: 00010246
RAX: 0000000000000000 RBX: 0000000000000000 RCX: 0000000000000000
RDX: ffff88811593c000 RSI: 00000000000000ff RDI: ffff88812f760e20
RBP: ffffc90001b5ea58 R08: ffffffff8686baac R09: ffffffff8686bac0
R10: dffffc0000000000 R11: ffffed1022b2780d R12: dffffc0000000000
R13: ffff88812f760e0a R14: 0000000000000002 R15: 0000000000000001
FS: 0000000000000000(0000) GS:ffff8881f6e00000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 000055cf8eb85460 CR3: 000000011594c000 CR4: 00000000003526b0
Call Trace:
<TASK>
snd_scarlett2_init+0x41b/0x630 sound/usb/mixer_scarlett2.c:9641
snd_usb_mixer_apply_create_quirk+0x1319/0x1740 sound/usb/mixer_quirks.c:4305
snd_usb_create_mixer+0x1b4e/0x29d0 sound/usb/mixer.c:3635
usb_audio_probe+0x13a6/0x1d60 sound/usb/card.c:970
usb_probe_interface+0x6ac/0xc00 drivers/usb/core/driver.c:400
call_driver_probe drivers/base/dd.c:-1 [inline]
really_probe+0x2d8/0x890 drivers/base/dd.c:657
__driver_probe_device+0x198/0x280 drivers/base/dd.c:799
driver_probe_device+0x54/0x3f0 drivers/base/dd.c:829
__device_attach_driver+0x2f1/0x4b0 drivers/base/dd.c:957
bus_for_each_drv+0x264/0x300 drivers/base/bus.c:459
__device_attach+0x2c9/0x3c0 drivers/base/dd.c:1029
device_initial_probe+0x1e/0x30 drivers/base/dd.c:1078
bus_probe_device+0x18b/0x270 drivers/base/bus.c:534
device_add+0x80c/0xbf0 drivers/base/core.c:3692
usb_set_configuration+0x1acf/0x20b0 drivers/usb/core/message.c:2210
usb_generic_driver_probe+0x95/0x160 drivers/usb/core/generic.c:254
usb_probe_device+0x1d4/0x380 drivers/usb/core/driver.c:295
call_driver_probe drivers/base/dd.c:-1 [inline]
really_probe+0x2d8/0x890 drivers/base/dd.c:657
__driver_probe_device+0x198/0x280 drivers/base/dd.c:799
driver_probe_device+0x54/0x3f0 drivers/base/dd.c:829
__device_attach_driver+0x2f1/0x4b0 drivers/base/dd.c:957
bus_for_each_drv+0x264/0x300 drivers/base/bus.c:459
__device_attach+0x2c9/0x3c0 drivers/base/dd.c:1029
device_initial_probe+0x1e/0x30 drivers/base/dd.c:1078
bus_probe_device+0x18b/0x270 drivers/base/bus.c:534
device_add+0x80c/0xbf0 drivers/base/core.c:3692
usb_new_device+0x9f8/0x15b0 drivers/usb/core/hub.c:2703
hub_port_connect drivers/usb/core/hub.c:5574 [inline]
hub_port_connect_change drivers/usb/core/hub.c:5714 [inline]
port_event drivers/usb/core/hub.c:5878 [inline]
hub_event+0x30c6/0x4700 drivers/usb/core/hub.c:5960
process_one_work kernel/workqueue.c:3238 [inline]
process_scheduled_works+0x7d4/0x1020 kernel/workqueue.c:3319
worker_thread+0xc70/0x10b0 kernel/workqueue.c:3400
kthread+0x2c9/0x370 kernel/kthread.c:389
ret_from_fork+0x64/0xa0 arch/x86/kernel/process.c:153
ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:244
</TASK>
Modules linked in:
---[ end trace 0000000000000000 ]---
RIP: 0010:scarlett2_find_fc_interface sound/usb/mixer_scarlett2.c:8589 [inline]
RIP: 0010:scarlett2_init_private sound/usb/mixer_scarlett2.c:8624 [inline]
RIP: 0010:snd_scarlett2_controls_create+0x96d/0x50d0 sound/usb/mixer_scarlett2.c:9013
Code: 10 4c 8d b2 10 01 00 00 4c 89 f0 48 c1 e8 03 42 0f b6 04 20 84 c0 0f 85 eb 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 eb 31 00 00 45 0f b6 3e
RSP: 0018:ffffc90001b5e640 EFLAGS: 00010246
RAX: 0000000000000000 RBX: 0000000000000000 RCX: 0000000000000000
RDX: ffff88811593c000 RSI: 00000000000000ff RDI: ffff88812f760e20
RBP: ffffc90001b5ea58 R08: ffffffff8686baac R09: ffffffff8686bac0
R10: dffffc0000000000 R11: ffffed1022b2780d R12: dffffc0000000000
R13: ffff88812f760e0a R14: 0000000000000002 R15: 0000000000000001
FS: 0000000000000000(0000) GS:ffff8881f6e00000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 000055cf8eb85460 CR3: 0000000115778000 CR4: 00000000003526b0
----------------
Code disassembly (best guess):
0: 10 4c 8d b2 adc %cl,-0x4e(%rbp,%rcx,4)
4: 10 01 adc %al,(%rcx)
6: 00 00 add %al,(%rax)
8: 4c 89 f0 mov %r14,%rax
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 eb 31 00 00 jne 0x3207
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 eb 31 00 00 jne 0x3227
3c: 45 0f b6 3e movzbl (%r14),%r15d