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: 0 UID: 0 PID: 0 Comm: swapper/0 Not tainted syzkaller #0 67f3020b90cc129beeb7e47fd8352eb9a9cabb84
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: 8a fd 49 83 c6 78 4c 89 f0 48 c1 e8 03 42 80 3c 20 00 74 08 4c 89 f7 e8 19 84 de 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 fc 83 de fd 49 8b 06 48 89 45 d0
RSP: 0018:ffffc90000007720 EFLAGS: 00010006
RAX: 0000000000000003 RBX: ffff888119b63088 RCX: ffffffff87415600
RDX: 0000000000000100 RSI: ffff888119b63000 RDI: ffff88811a400000
RBP: ffffc90000007750 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: ffffffff83f07380 R12: dffffc0000000000
R13: 000000000000008d R14: 0000000000000018 R15: ffff88811a400000
FS:  0000000000000000(0000) GS:ffff8881f6e00000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f34523feff8 CR3: 000000012da92000 CR4: 00000000003526b0
Call Trace:
 <IRQ>
 hid_process_event+0x413/0x5f0 drivers/hid/hid-core.c:1527
 hid_process_report drivers/hid/hid-core.c:1685 [inline]
 hid_report_raw_event+0xf79/0x1840 drivers/hid/hid-core.c:2060
 __hid_input_report+0x444/0x4d0 drivers/hid/hid-core.c:2131
 hid_safe_input_report+0x42/0x60 drivers/hid/hid-core.c:2178
 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+0xa39/0x48d0 drivers/usb/gadget/udc/dummy_hcd.c:2003
 __run_hrtimer kernel/time/hrtimer.c:1753 [inline]
 __hrtimer_run_queues+0x3ab/0x8e0 kernel/time/hrtimer.c:1817
 hrtimer_run_softirq+0x155/0x270 kernel/time/hrtimer.c:1834
 handle_softirqs+0x168/0x4f0 kernel/softirq.c:579
 __do_softirq kernel/softirq.c:613 [inline]
 invoke_softirq kernel/softirq.c:453 [inline]
 __irq_exit_rcu+0x47/0xb0 kernel/softirq.c:662
 irq_exit_rcu+0xd/0x30 kernel/softirq.c:674
 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:106
Code: cc cc cc cc cc cc cc b8 80 7e 22 f8 90 90 90 90 90 90 90 90 90 90 90 f3 0f 1e fa 66 90 0f 00 2d 43 45 39 00 55 48 89 e5 fb f4 <5d> e9 97 05 06 00 cc cc cc cc cc cc cc b8 00 00 00 00 90 90 90 90
RSP: 0018:ffffffff87407da0 EFLAGS: 000002c2
RAX: ffff8881f6e00000 RBX: ffffffff87415600 RCX: ffffffff854e16dd
RDX: 0000000000000001 RSI: 0000000000000004 RDI: 0000000000018ae4
RBP: ffffffff87407da0 R08: ffff8881f6e3964b R09: 1ffff1103edc72c9
R10: dffffc0000000000 R11: ffffed103edc72ca R12: 0000000000000000
R13: 1ffffffff0e82ac0 R14: dffffc0000000000 R15: ffffffff87e3b628
 arch_safe_halt arch/x86/include/asm/paravirt.h:-1 [inline]
 default_idle+0x17/0x30 arch/x86/kernel/process.c:753
 arch_cpu_idle+0xd/0x20 arch/x86/kernel/process.c:790
 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
 rest_init+0x10b/0x130 init/main.c:759
 start_kernel+0x45f/0x4bb init/main.c:1116
 x86_64_start_reservations+0x2e/0x30 arch/x86/kernel/head64.c:507
 x86_64_start_kernel+0x6a/0x7b arch/x86/kernel/head64.c:488
 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: 8a fd 49 83 c6 78 4c 89 f0 48 c1 e8 03 42 80 3c 20 00 74 08 4c 89 f7 e8 19 84 de 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 fc 83 de fd 49 8b 06 48 89 45 d0
RSP: 0018:ffffc90000007720 EFLAGS: 00010006
RAX: 0000000000000003 RBX: ffff888119b63088 RCX: ffffffff87415600
RDX: 0000000000000100 RSI: ffff888119b63000 RDI: ffff88811a400000
RBP: ffffc90000007750 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: ffffffff83f07380 R12: dffffc0000000000
R13: 000000000000008d R14: 0000000000000018 R15: ffff88811a400000
FS:  0000000000000000(0000) GS:ffff8881f6e00000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f34523feff8 CR3: 000000012da92000 CR4: 00000000003526b0
----------------
Code disassembly (best guess):
   0:	8a fd                	mov    %ch,%bh
   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 19 84 de fd       	call   0xfdde8435
  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 fc 83 de fd       	call   0xfdde8435
  39:	49 8b 06             	mov    (%r14),%rax
  3c:	48 89 45 d0          	mov    %rax,-0x30(%rbp)