==================================================================
BUG: KASAN: null-ptr-deref in mcp2221_raw_event+0xc1f/0x1030 drivers/hid/hid-mcp2221.c:820
Write of size 158 at addr 0000000000000000 by task syz-executor/2959

CPU: 1 UID: 0 PID: 2959 Comm: syz-executor Not tainted 6.16.0-rc2-syzkaller-00033-g9962d0433a86 #0 PREEMPT(voluntary) 
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 05/07/2025
Call Trace:
 <IRQ>
 __dump_stack lib/dump_stack.c:94 [inline]
 dump_stack_lvl+0x116/0x1f0 lib/dump_stack.c:120
 kasan_report+0xe0/0x110 mm/kasan/report.c:634
 check_region_inline mm/kasan/generic.c:183 [inline]
 kasan_check_range+0x100/0x1b0 mm/kasan/generic.c:189
 __asan_memcpy+0x3c/0x60 mm/kasan/shadow.c:106
 mcp2221_raw_event+0xc1f/0x1030 drivers/hid/hid-mcp2221.c:820
 __hid_input_report.constprop.0+0x314/0x450 drivers/hid/hid-core.c:2117
 hid_irq_in+0x35e/0x870 drivers/hid/usbhid/hid-core.c:286
 __usb_hcd_giveback_urb+0x38d/0x6e0 drivers/usb/core/hcd.c:1650
 usb_hcd_giveback_urb+0x39b/0x450 drivers/usb/core/hcd.c:1734
 dummy_timer+0x180e/0x3a20 drivers/usb/gadget/udc/dummy_hcd.c:1995
 __run_hrtimer kernel/time/hrtimer.c:1761 [inline]
 __hrtimer_run_queues+0x202/0xad0 kernel/time/hrtimer.c:1825
 hrtimer_run_softirq+0x17d/0x350 kernel/time/hrtimer.c:1842
 handle_softirqs+0x205/0x8d0 kernel/softirq.c:579
 __do_softirq kernel/softirq.c:613 [inline]
 invoke_softirq kernel/softirq.c:453 [inline]
 __irq_exit_rcu+0xfa/0x160 kernel/softirq.c:680
 irq_exit_rcu+0x9/0x30 kernel/softirq.c:696
 instr_sysvec_apic_timer_interrupt arch/x86/kernel/apic/apic.c:1050 [inline]
 sysvec_apic_timer_interrupt+0x90/0xb0 arch/x86/kernel/apic/apic.c:1050
 </IRQ>
 <TASK>
 asm_sysvec_apic_timer_interrupt+0x1a/0x20 arch/x86/include/asm/idtentry.h:702
RIP: 0010:finish_task_switch.isra.0+0x1e9/0x9e0 kernel/sched/core.c:5264
Code: 0f 85 5f 07 00 00 8b 0d 09 e7 2b 09 85 c9 0f 85 b9 02 00 00 48 89 df e8 e5 98 e2 05 e8 40 99 36 00 fb 65 48 8b 1d ff c7 1c 0b <48> 8d bb 50 15 00 00 48 b8 00 00 00 00 00 fc ff df 48 89 fa 48 c1
RSP: 0018:ffffc9000183fab0 EFLAGS: 00000206
RAX: 000000000014d209 RBX: ffff8881165a0000 RCX: ffffffff8185904f
RDX: 0000000000000000 RSI: ffffffff88b03c78 RDI: ffffffff8768fc40
RBP: ffffc9000183faf0 R08: 0000000000000001 R09: 0000000000000001
R10: ffffffff8a7ad0d7 R11: 0000000000000001 R12: ffff888112beba00
R13: 0000000000000000 R14: ffff8881f5938858 R15: ffff8881f5939398
 context_switch kernel/sched/core.c:5399 [inline]
 __schedule+0x1332/0x3b10 kernel/sched/core.c:6785
 __schedule_loop kernel/sched/core.c:6863 [inline]
 schedule+0xe7/0x3a0 kernel/sched/core.c:6878
 do_nanosleep+0x21a/0x570 kernel/time/hrtimer.c:2100
 hrtimer_nanosleep+0x155/0x380 kernel/time/hrtimer.c:2147
 common_nsleep+0xa1/0xd0 kernel/time/posix-timers.c:1353
 __do_sys_clock_nanosleep kernel/time/posix-timers.c:1399 [inline]
 __se_sys_clock_nanosleep kernel/time/posix-timers.c:1376 [inline]
 __x64_sys_clock_nanosleep+0x34a/0x4a0 kernel/time/posix-timers.c:1376
 do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline]
 do_syscall_64+0xcd/0x4b0 arch/x86/entry/syscall_64.c:94
 entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7fd1cf0611a3
Code: 1f 84 00 00 00 00 00 83 ff 03 74 7b 83 ff 02 b8 fa ff ff ff 49 89 ca 0f 44 f8 80 3d 9e 43 1c 00 00 74 14 b8 e6 00 00 00 0f 05 <f7> d8 c3 66 2e 0f 1f 84 00 00 00 00 00 48 83 ec 28 48 89 54 24 10
RSP: 002b:00007ffeb29a4fe8 EFLAGS: 00000202 ORIG_RAX: 00000000000000e6
RAX: ffffffffffffffda RBX: 00000000000001de RCX: 00007fd1cf0611a3
RDX: 00007ffeb29a5000 RSI: 0000000000000000 RDI: 0000000000000000
RBP: 00007ffeb29a506c R08: 0000000000016494 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000202 R12: 0000000000001388
R13: 00000000000927c0 R14: 00000000000be952 R15: 00007ffeb29a50c0
 </TASK>
==================================================================
----------------
Code disassembly (best guess):
   0:	0f 85 5f 07 00 00    	jne    0x765
   6:	8b 0d 09 e7 2b 09    	mov    0x92be709(%rip),%ecx        # 0x92be715
   c:	85 c9                	test   %ecx,%ecx
   e:	0f 85 b9 02 00 00    	jne    0x2cd
  14:	48 89 df             	mov    %rbx,%rdi
  17:	e8 e5 98 e2 05       	call   0x5e29901
  1c:	e8 40 99 36 00       	call   0x369961
  21:	fb                   	sti
  22:	65 48 8b 1d ff c7 1c 	mov    %gs:0xb1cc7ff(%rip),%rbx        # 0xb1cc829
  29:	0b
* 2a:	48 8d bb 50 15 00 00 	lea    0x1550(%rbx),%rdi <-- trapping instruction
  31:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
  38:	fc ff df
  3b:	48 89 fa             	mov    %rdi,%rdx
  3e:	48                   	rex.W
  3f:	c1                   	.byte 0xc1