syzbot

cm109 1-1:0.8: cm109_urb_irq_callback: urb status -71
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URB ffff8880795fe000 submitted while active
WARNING: drivers/usb/core/urb.c:379 at usb_submit_urb+0x7b/0x18b0 drivers/usb/core/urb.c:379, CPU#0: syz.0.17/5985
Modules linked in:
CPU: 0 UID: 0 PID: 5985 Comm: syz.0.17 Not tainted syzkaller #0 PREEMPT(full) 
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 02/12/2026
RIP: 0010:usb_submit_urb+0x7e/0x18b0 drivers/usb/core/urb.c:379
Code: 89 f0 48 c1 e8 03 42 80 3c 38 00 74 08 4c 89 f7 e8 77 cd f9 fa 49 83 3e 00 74 40 e8 1c a8 8f fa 48 8d 3d 05 d0 e8 08 48 89 de <67> 48 0f b9 3a b8 f0 ff ff ff eb 11 e8 01 a8 8f fa eb 05 e8 fa a7
RSP: 0018:ffffc90000007960 EFLAGS: 00010046
RAX: ffffffff8735e364 RBX: ffff8880795fe000 RCX: ffff8880203c1e40
RDX: 0000000000000100 RSI: ffff8880795fe000 RDI: ffffffff901eb370
RBP: 000000000000000f R08: 0000000000000003 R09: 0000000000000004
R10: dffffc0000000000 R11: fffff52000000f2c R12: 0000000000000820
R13: ffff8880342a9030 R14: ffff8880795fe008 R15: dffffc0000000000
FS:  0000555577c7c500(0000) GS:ffff888125467000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000200000003000 CR3: 000000007f66e000 CR4: 00000000003526f0
Call Trace:
 <IRQ>
 cm109_submit_ctl drivers/input/misc/cm109.c:380 [inline]
 cm109_urb_irq_callback+0x6e2/0xcb0 drivers/input/misc/cm109.c:431
 __usb_hcd_giveback_urb+0x376/0x540 drivers/usb/core/hcd.c:1657
 dummy_timer+0xbbd/0x45d0 drivers/usb/gadget/udc/dummy_hcd.c:1995
 __run_hrtimer kernel/time/hrtimer.c:1785 [inline]
 __hrtimer_run_queues+0x53a/0xcc0 kernel/time/hrtimer.c:1849
 hrtimer_run_softirq+0x182/0x5a0 kernel/time/hrtimer.c:1866
 handle_softirqs+0x22a/0x870 kernel/softirq.c:622
 __do_softirq kernel/softirq.c:656 [inline]
 invoke_softirq kernel/softirq.c:496 [inline]
 __irq_exit_rcu+0x5f/0x150 kernel/softirq.c:723
 irq_exit_rcu+0x9/0x30 kernel/softirq.c:739
 instr_sysvec_apic_timer_interrupt arch/x86/kernel/apic/apic.c:1056 [inline]
 sysvec_apic_timer_interrupt+0xa6/0xc0 arch/x86/kernel/apic/apic.c:1056
 </IRQ>
 <TASK>
 asm_sysvec_apic_timer_interrupt+0x1a/0x20 arch/x86/include/asm/idtentry.h:697
RIP: 0010:__raw_spin_unlock_irqrestore include/linux/spinlock_api_smp.h:179 [inline]
RIP: 0010:_raw_spin_unlock_irqrestore+0x47/0x80 kernel/locking/spinlock.c:194
Code: f7 e8 4d 60 f2 f5 f7 c3 00 02 00 00 74 05 e8 70 af 1d f6 9c 58 a9 00 02 00 00 75 27 f7 c3 00 02 00 00 74 01 fb bf 01 00 00 00 <e8> 94 26 e4 f5 65 8b 05 8d cf 6b 07 85 c0 74 18 5b 41 5e c3 cc cc
RSP: 0018:ffffc90002f47b40 EFLAGS: 00000206
RAX: 0000000000000006 RBX: 0000000000000246 RCX: 0000000080000001
RDX: 0000000000000006 RSI: ffffffff8def225c RDI: 0000000000000001
RBP: 0000000000000000 R08: ffffffff90117db7 R09: 1ffffffff2022fb6
R10: dffffc0000000000 R11: fffffbfff2022fb7 R12: 0000000000000246
R13: 1ffff11004c0997f R14: ffff88802604c000 R15: ffff88802a476408
 spin_unlock_irqrestore include/linux/spinlock.h:407 [inline]
 dummy_pullup+0x18c/0x200 drivers/usb/gadget/udc/dummy_hcd.c:926
 usb_gadget_disconnect_locked+0x143/0x4d0 drivers/usb/gadget/udc/core.c:780
 gadget_unbind_driver+0xc7/0x450 drivers/usb/gadget/udc/core.c:1685
 device_remove drivers/base/dd.c:571 [inline]
 __device_release_driver drivers/base/dd.c:1284 [inline]
 device_release_driver_internal+0x46f/0x860 drivers/base/dd.c:1307
 driver_detach+0x1f3/0x2d0 drivers/base/dd.c:1370
 bus_remove_driver+0x226/0x320 drivers/base/bus.c:784
 usb_gadget_unregister_driver+0x4e/0x70 drivers/usb/gadget/udc/core.c:1751
 raw_release+0xd7/0x260 drivers/usb/gadget/legacy/raw_gadget.c:463
 __fput+0x44f/0xa70 fs/file_table.c:469
 task_work_run+0x1d9/0x270 kernel/task_work.c:233
 resume_user_mode_work include/linux/resume_user_mode.h:50 [inline]
 __exit_to_user_mode_loop kernel/entry/common.c:67 [inline]
 exit_to_user_mode_loop+0xed/0x480 kernel/entry/common.c:98
 __exit_to_user_mode_prepare include/linux/irq-entry-common.h:226 [inline]
 syscall_exit_to_user_mode_prepare include/linux/irq-entry-common.h:256 [inline]
 syscall_exit_to_user_mode include/linux/entry-common.h:325 [inline]
 do_syscall_64+0x32d/0xf80 arch/x86/entry/syscall_64.c:100
 entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7f06e879c629
Code: ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 44 00 00 48 89 f8 48 89 f7 48 89 d6 48 89 ca 4d 89 c2 4d 89 c8 4c 8b 4c 24 08 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 c7 c1 e8 ff ff ff f7 d8 64 89 01 48
RSP: 002b:00007fff78704ab8 EFLAGS: 00000246 ORIG_RAX: 00000000000001b4
RAX: 0000000000000000 RBX: 00007fff78704ba0 RCX: 00007f06e879c629
RDX: 0000000000000000 RSI: 000000000000001e RDI: 0000000000000003
RBP: 0000000000018cd4 R08: 0000000000000001 R09: 0000000000000000
R10: 0000001b2f020000 R11: 0000000000000246 R12: 0000000000000000
R13: 00007f06e8a15fac R14: 00007f06e8a15fa8 R15: 00007f06e8a15fa0
 </TASK>
----------------
Code disassembly (best guess):
   0:	89 f0                	mov    %esi,%eax
   2:	48 c1 e8 03          	shr    $0x3,%rax
   6:	42 80 3c 38 00       	cmpb   $0x0,(%rax,%r15,1)
   b:	74 08                	je     0x15
   d:	4c 89 f7             	mov    %r14,%rdi
  10:	e8 77 cd f9 fa       	call   0xfaf9cd8c
  15:	49 83 3e 00          	cmpq   $0x0,(%r14)
  19:	74 40                	je     0x5b
  1b:	e8 1c a8 8f fa       	call   0xfa8fa83c
  20:	48 8d 3d 05 d0 e8 08 	lea    0x8e8d005(%rip),%rdi        # 0x8e8d02c
  27:	48 89 de             	mov    %rbx,%rsi
* 2a:	67 48 0f b9 3a       	ud1    (%edx),%rdi <-- trapping instruction
  2f:	b8 f0 ff ff ff       	mov    $0xfffffff0,%eax
  34:	eb 11                	jmp    0x47
  36:	e8 01 a8 8f fa       	call   0xfa8fa83c
  3b:	eb 05                	jmp    0x42
  3d:	e8                   	.byte 0xe8
  3e:	fa                   	cli
  3f:	a7                   	cmpsl  %es:(%rdi),%ds:(%rsi)