general protection fault, probably for non-canonical address 0xdffffc0000000003: 0000 [#1] PREEMPT SMP KASAN
KASAN: null-ptr-deref in range [0x0000000000000018-0x000000000000001f]
CPU: 1 PID: 0 Comm: swapper/1 Not tainted syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/15/2026
RIP: 0010:saitek_event+0x51/0x2c0 drivers/hid/hid-saitek.c:154
Code: e5 fd 49 83 c6 60 4c 89 f0 48 c1 e8 03 42 80 3c 20 00 74 08 4c 89 f7 e8 8d 79 25 fe 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 70 79 25 fe 49 8b 06 48 89 45 d0
RSP: 0018:ffffc900001d0710 EFLAGS: 00010006
RAX: 0000000000000003 RBX: ffff88810ab95f70 RCX: ffff88810030d000
RDX: 0000000000000100 RSI: ffff88810ab95f00 RDI: ffff88811ed18000
RBP: ffffc900001d0740 R08: 0000000000000000 R09: 0000000000000004
R10: dffffc0000000000 R11: fffff5200003a088 R12: dffffc0000000000
R13: 000000000000008d R14: 0000000000000018 R15: ffff88811ed18000
FS:  0000000000000000(0000) GS:ffff8881f7100000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f1e5e5c4bb0 CR3: 000000011e0c7000 CR4: 00000000003506a0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
 <IRQ>
 hid_process_event+0x3ea/0x5a0 drivers/hid/hid-core.c:1538
 hid_input_field drivers/hid/hid-core.c:1592 [inline]
 __hid_report_raw_event+0xf06/0x18d0 drivers/hid/hid-core.c:1847
 hid_input_report+0x44c/0x500 drivers/hid/hid-core.c:1922
 hid_ctrl+0x235/0x510 drivers/hid/usbhid/hid-core.c:483
 __usb_hcd_giveback_urb+0x32f/0x4f0 drivers/usb/core/hcd.c:1674
 usb_hcd_giveback_urb+0x11d/0x3f0 drivers/usb/core/hcd.c:1751
 dummy_timer+0xa3a/0x32d0 drivers/usb/gadget/udc/dummy_hcd.c:2012
 call_timer_fn+0x38/0x290 kernel/time/timer.c:1459
 expire_timers kernel/time/timer.c:1504 [inline]
 __run_timers+0x637/0x9a0 kernel/time/timer.c:1775
 run_timer_softirq+0x6a/0xf0 kernel/time/timer.c:1788
 handle_softirqs+0x250/0x560 kernel/softirq.c:583
 __do_softirq kernel/softirq.c:621 [inline]
 invoke_softirq kernel/softirq.c:443 [inline]
 __irq_exit_rcu+0x52/0xf0 kernel/softirq.c:670
 irq_exit_rcu+0x9/0x10 kernel/softirq.c:682
 instr_sysvec_apic_timer_interrupt arch/x86/kernel/apic/apic.c:1108 [inline]
 sysvec_apic_timer_interrupt+0xa9/0xc0 arch/x86/kernel/apic/apic.c:1108
 </IRQ>
 <TASK>
 asm_sysvec_apic_timer_interrupt+0x1b/0x20 arch/x86/include/asm/idtentry.h:676
RIP: 0010:default_idle+0xf/0x20 arch/x86/kernel/process.c:730
Code: 8c 4b ff ff ff 4c 89 f7 e8 3e f4 f3 fc e9 3e ff ff ff 00 00 cc cc 00 00 cc cc 00 55 48 89 e5 66 90 0f 00 2d 83 e0 4f 00 fb f4 <5d> c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 44 00 00 55 48 89 e5 41
RSP: 0018:ffffc90000157db8 EFLAGS: 00000246
RAX: 00000000000037d4 RBX: ffff88810030d000 RCX: 00000000000037d4
RDX: 0000000000000001 RSI: ffffffff85639420 RDI: ffffffff856393e0
RBP: ffffc90000157db8 R08: ffff8881f7138c33 R09: 1ffff1103ee27186
R10: dffffc0000000000 R11: ffffed103ee27187 R12: 0000000000000000
R13: 1ffff11020061a00 R14: dffffc0000000000 R15: dffffc0000000000
 arch_cpu_idle+0xa/0x10 arch/x86/kernel/process.c:721
 default_idle_call+0x71/0x1d0 kernel/sched/idle.c:112
 cpuidle_idle_call kernel/sched/idle.c:202 [inline]
 do_idle+0x217/0x620 kernel/sched/idle.c:326
 cpu_startup_entry+0x18/0x20 kernel/sched/idle.c:424
 start_secondary+0x2c8/0x380 arch/x86/kernel/smpboot.c:281
 secondary_startup_64_no_verify+0xb1/0xbb
 </TASK>
Modules linked in:
---[ end trace 72c2fcde7f439623 ]---
RIP: 0010:saitek_event+0x51/0x2c0 drivers/hid/hid-saitek.c:154
Code: e5 fd 49 83 c6 60 4c 89 f0 48 c1 e8 03 42 80 3c 20 00 74 08 4c 89 f7 e8 8d 79 25 fe 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 70 79 25 fe 49 8b 06 48 89 45 d0
RSP: 0018:ffffc900001d0710 EFLAGS: 00010006
RAX: 0000000000000003 RBX: ffff88810ab95f70 RCX: ffff88810030d000
RDX: 0000000000000100 RSI: ffff88810ab95f00 RDI: ffff88811ed18000
RBP: ffffc900001d0740 R08: 0000000000000000 R09: 0000000000000004
R10: dffffc0000000000 R11: fffff5200003a088 R12: dffffc0000000000
R13: 000000000000008d R14: 0000000000000018 R15: ffff88811ed18000
FS:  0000000000000000(0000) GS:ffff8881f7100000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f1e5e5c4bb0 CR3: 000000011e0c7000 CR4: 00000000003506a0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
----------------
Code disassembly (best guess):
   0:	e5 fd                	in     $0xfd,%eax
   2:	49 83 c6 60          	add    $0x60,%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 8d 79 25 fe       	call   0xfe2579a9
  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 70 79 25 fe       	call   0xfe2579a9
  39:	49 8b 06             	mov    (%r14),%rax
  3c:	48 89 45 d0          	mov    %rax,-0x30(%rbp)