Oops: general protection fault, probably for non-canonical address 0xdffffc0000000003: 0000 [#1] PREEMPT SMP KASAN PTI
KASAN: null-ptr-deref in range [0x0000000000000018-0x000000000000001f]
CPU: 1 UID: 0 PID: 0 Comm: swapper/1 Not tainted syzkaller #0 9109b4058d136ef0ac9398910d6f8e272823abe4
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 09/16/2026
RIP: 0010:saitek_event+0x55/0x2d0 drivers/hid/hid-saitek.c:154
Code: 5c fd 49 83 c6 78 4c 89 f0 48 c1 e8 03 42 80 3c 20 00 74 08 4c 89 f7 e8 99 9c b5 fd 4d 8b 36 49 83 c6 18 4c 89 f0 48 c1 e8 03 <42> 80 3c 20 00 74 08 4c 89 f7 e8 7c 9c b5 fd 49 8b 06 48 89 45 d0
RSP: 0018:ffffc900002306e0 EFLAGS: 00010006
RAX: 0000000000000003 RBX: ffff88811f3c9d88 RCX: 0000000000040000
RDX: ffffc90000572000 RSI: 0000000000000020 RDI: 0000000000000021
RBP: ffffc90000230710 R08: 0000000000000000 R09: 0000000000000004
R10: 0000000000000000 R11: ffffffff842d2530 R12: dffffc0000000000
R13: 000000000000008d R14: 0000000000000018 R15: ffff8881207a4000
FS:  0000000000000000(0000) GS:ffff8881f6d00000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007efea2016ff8 CR3: 00000001156e8000 CR4: 00000000003526b0
Call Trace:
 <IRQ>
 hid_process_event+0x410/0x5f0 drivers/hid/hid-core.c:1527
 hid_process_report drivers/hid/hid-core.c:1685 [inline]
 __hid_report_raw_event+0x100b/0x18e0 drivers/hid/hid-core.c:2067
 __hid_input_report+0x444/0x4d0 drivers/hid/hid-core.c:2145
 hid_safe_input_report+0x42/0x60 drivers/hid/hid-core.c:2192
 hid_ctrl+0x200/0x590 drivers/hid/usbhid/hid-core.c:485
 __usb_hcd_giveback_urb+0x36e/0x530 drivers/usb/core/hcd.c:1646
 usb_hcd_giveback_urb+0x12b/0x400 drivers/usb/core/hcd.c:1730
 dummy_timer+0xa3f/0x4900 drivers/usb/gadget/udc/dummy_hcd.c:2003
 __run_hrtimer kernel/time/hrtimer.c:1758 [inline]
 __hrtimer_run_queues+0x3ab/0x8e0 kernel/time/hrtimer.c:1822
 hrtimer_run_softirq+0x159/0x560 kernel/time/hrtimer.c:1839
 handle_softirqs+0x1aa/0x5b0 kernel/softirq.c:621
 __do_softirq kernel/softirq.c:659 [inline]
 invoke_softirq kernel/softirq.c:476 [inline]
 __irq_exit_rcu+0x47/0xb0 kernel/softirq.c:708
 irq_exit_rcu+0xd/0x30 kernel/softirq.c:720
 instr_sysvec_apic_timer_interrupt arch/x86/kernel/apic/apic.c:1049 [inline]
 sysvec_apic_timer_interrupt+0x82/0x90 arch/x86/kernel/apic/apic.c:1049
 </IRQ>
 <TASK>
 asm_sysvec_apic_timer_interrupt+0x1f/0x30 arch/x86/include/asm/idtentry.h:702
RIP: 0010:pv_native_safe_halt+0x13/0x20 arch/x86/kernel/paravirt.c:116
Code: cc cc cc cc cc cc cc b8 95 86 d2 7a 90 90 90 90 90 90 90 90 90 90 90 f3 0f 1e fa 66 90 0f 00 2d c3 39 3f 00 55 48 89 e5 fb f4 <5d> c3 cc cc cc cc cc cc cc cc cc cc cc b8 00 00 00 00 90 90 90 90
RSP: 0018:ffffc900001a7e00 EFLAGS: 000002c2
RAX: ffff8881f6d00000 RBX: ffff888103668000 RCX: ffffffff85a8253d
RDX: 0000000000000001 RSI: 0000000000000004 RDI: 000000000015b12c
RBP: ffffc900001a7e00 R08: ffff8881f6d396fb R09: 1ffff1103eda72df
R10: dffffc0000000000 R11: ffffed103eda72e0 R12: 0000000000000000
R13: 1ffff110206cd000 R14: dffffc0000000000 R15: ffffffff886d5868
 arch_safe_halt arch/x86/include/asm/paravirt.h:-1 [inline]
 default_idle+0x17/0x30 arch/x86/kernel/process.c:754
 arch_cpu_idle+0xd/0x20 arch/x86/kernel/process.c:791
 default_idle_call+0x3e/0x80 kernel/sched/idle.c:117
 cpuidle_idle_call kernel/sched/idle.c:193 [inline]
 do_idle+0x2fc/0x570 kernel/sched/idle.c:346
 cpu_startup_entry+0x47/0x60 kernel/sched/idle.c:445
 start_secondary+0x12e/0x140 arch/x86/kernel/smpboot.c:314
 common_startup_64+0x13b/0x157
 </TASK>
Modules linked in:
---[ end trace 0000000000000000 ]---
RIP: 0010:saitek_event+0x55/0x2d0 drivers/hid/hid-saitek.c:154
Code: 5c fd 49 83 c6 78 4c 89 f0 48 c1 e8 03 42 80 3c 20 00 74 08 4c 89 f7 e8 99 9c b5 fd 4d 8b 36 49 83 c6 18 4c 89 f0 48 c1 e8 03 <42> 80 3c 20 00 74 08 4c 89 f7 e8 7c 9c b5 fd 49 8b 06 48 89 45 d0
RSP: 0018:ffffc900002306e0 EFLAGS: 00010006
RAX: 0000000000000003 RBX: ffff88811f3c9d88 RCX: 0000000000040000
RDX: ffffc90000572000 RSI: 0000000000000020 RDI: 0000000000000021
RBP: ffffc90000230710 R08: 0000000000000000 R09: 0000000000000004
R10: 0000000000000000 R11: ffffffff842d2530 R12: dffffc0000000000
R13: 000000000000008d R14: 0000000000000018 R15: ffff8881207a4000
FS:  0000000000000000(0000) GS:ffff8881f6d00000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007efea2016ff8 CR3: 00000001156e8000 CR4: 00000000003526b0
----------------
Code disassembly (best guess):
   0:	5c                   	pop    %rsp
   1:	fd                   	std
   2:	49 83 c6 78          	add    $0x78,%r14
   6:	4c 89 f0             	mov    %r14,%rax
   9:	48 c1 e8 03          	shr    $0x3,%rax
   d:	42 80 3c 20 00       	cmpb   $0x0,(%rax,%r12,1)
  12:	74 08                	je     0x1c
  14:	4c 89 f7             	mov    %r14,%rdi
  17:	e8 99 9c b5 fd       	call   0xfdb59cb5
  1c:	4d 8b 36             	mov    (%r14),%r14
  1f:	49 83 c6 18          	add    $0x18,%r14
  23:	4c 89 f0             	mov    %r14,%rax
  26:	48 c1 e8 03          	shr    $0x3,%rax
* 2a:	42 80 3c 20 00       	cmpb   $0x0,(%rax,%r12,1) <-- trapping instruction
  2f:	74 08                	je     0x39
  31:	4c 89 f7             	mov    %r14,%rdi
  34:	e8 7c 9c b5 fd       	call   0xfdb59cb5
  39:	49 8b 06             	mov    (%r14),%rax
  3c:	48 89 45 d0          	mov    %rax,-0x30(%rbp)