Oops: general protection fault, probably for non-canonical address 0xdffffc0000000003: 0000 [#1] SMP KASAN PTI
KASAN: null-ptr-deref in range [0x0000000000000018-0x000000000000001f]
CPU: 1 UID: 0 PID: 5622 Comm: sshd-session Not tainted syzkaller #0 PREEMPT(full) 
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/07/2026
RIP: 0010:saitek_event+0x51/0x2b0 drivers/hid/hid-saitek.c:154
Code: 96 f8 49 83 c6 78 4c 89 f0 48 c1 e8 03 42 80 3c 28 00 74 08 4c 89 f7 e8 cd 52 09 f9 4d 8b 36 49 83 c6 18 4c 89 f0 48 c1 e8 03 <42> 80 3c 28 00 74 08 4c 89 f7 e8 b0 52 09 f9 49 8b 06 48 89 04 24
RSP: 0018:ffffc90000a38870 EFLAGS: 00010006
RAX: 0000000000000003 RBX: ffff8880226a3d88 RCX: ffff8880138e9f40
RDX: 8000000000000100 RSI: 0000000000000100 RDI: ffff8880212c0000
RBP: 000000000000008d R08: 0000000000000000 R09: 0000000000000000
R10: ffff8880226a3da8 R11: ffffffff89326430 R12: ffffffff914e4848
R13: dffffc0000000000 R14: 0000000000000018 R15: ffff8880212c0000
FS:  00007f91be9b8300(0000) GS:ffff88812351f000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f7a71415ff8 CR3: 0000000026f50000 CR4: 00000000003526f0
Call Trace:
 <IRQ>
 hid_process_event+0x436/0x620 drivers/hid/hid-core.c:1572
 hid_process_report drivers/hid/hid-core.c:1730 [inline]
 hid_report_raw_event+0xf6a/0x1900 drivers/hid/hid-core.c:2109
 __hid_input_report+0x454/0x580 drivers/hid/hid-core.c:2180
 hid_ctrl+0x204/0x580 drivers/hid/usbhid/hid-core.c:486
 __usb_hcd_giveback_urb+0x378/0x540 drivers/usb/core/hcd.c:1658
 dummy_timer+0xa91/0x4cc0 drivers/usb/gadget/udc/dummy_hcd.c:2023
 __run_hrtimer kernel/time/hrtimer.c:2075 [inline]
 __hrtimer_run_queues+0x3bc/0xa10 kernel/time/hrtimer.c:2132
 hrtimer_run_softirq+0x1e3/0x2e0 kernel/time/hrtimer.c:2149
 handle_softirqs+0x223/0x840 kernel/softirq.c:645
 do_softirq+0x77/0xd0 kernel/softirq.c:546
 </IRQ>
 <TASK>
 __local_bh_enable_ip+0x100/0x140 kernel/softirq.c:473
 local_bh_enable include/linux/bottom_half.h:33 [inline]
 rcu_read_unlock_bh include/linux/rcupdate.h:923 [inline]
 __dev_queue_xmit+0x1efb/0x3920 net/core/dev.c:5031
 dev_queue_xmit include/linux/netdevice.h:3464 [inline]
 neigh_hh_output include/net/neighbour.h:538 [inline]
 neigh_output include/net/neighbour.h:552 [inline]
 ip_finish_output2+0xbda/0x10b0 net/ipv4/ip_output.c:236
 NF_HOOK_COND include/linux/netfilter.h:314 [inline]
 ip_output+0x29f/0x450 net/ipv4/ip_output.c:437
 __ip_queue_xmit+0x10df/0x1b10 net/ipv4/ip_output.c:533
 __tcp_transmit_skb+0x2d18/0x47c0 net/ipv4/tcp_output.c:1767
 tcp_transmit_skb net/ipv4/tcp_output.c:1784 [inline]
 tcp_write_xmit+0x1cdf/0x6550 net/ipv4/tcp_output.c:3120
 __tcp_push_pending_frames+0x96/0x380 net/ipv4/tcp_output.c:3303
 tcp_sendmsg_locked+0x472e/0x5320 net/ipv4/tcp.c:1416
 tcp_sendmsg+0x2f/0x50 net/ipv4/tcp.c:1453
 sock_sendmsg_nosec+0x10f/0x190 net/socket.c:801
 __sock_sendmsg net/socket.c:818 [inline]
 sock_write_iter+0x2de/0x3e0 net/socket.c:1269
 new_sync_write fs/read_write.c:595 [inline]
 vfs_write+0x612/0xba0 fs/read_write.c:687
 ksys_write+0x150/0x270 fs/read_write.c:1036
 do_syscall_x64 arch/x86/entry/syscall_64.c:61 [inline]
 do_syscall_64+0x166/0x520 arch/x86/entry/syscall_64.c:84
 entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7f91be2a7407
Code: 48 89 fa 4c 89 df e8 38 aa 00 00 8b 93 08 03 00 00 59 5e 48 83 f8 fc 74 1a 5b c3 0f 1f 84 00 00 00 00 00 48 8b 44 24 10 0f 05 <5b> c3 0f 1f 80 00 00 00 00 83 e2 39 83 fa 08 75 de e8 23 ff ff ff
RSP: 002b:00007ffc8222f590 EFLAGS: 00000202 ORIG_RAX: 0000000000000001
RAX: ffffffffffffffda RBX: 00007f91be9b8300 RCX: 00007f91be2a7407
RDX: 0000000000000064 RSI: 0000561ee56fb520 RDI: 0000000000000004
RBP: 0000561ee56ff050 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000202 R12: 0000000000000001
R13: 00007ffc8222f6e0 R14: 0000000000000000 R15: 0000000000000004
 </TASK>
Modules linked in:
---[ end trace 0000000000000000 ]---
RIP: 0010:saitek_event+0x51/0x2b0 drivers/hid/hid-saitek.c:154
Code: 96 f8 49 83 c6 78 4c 89 f0 48 c1 e8 03 42 80 3c 28 00 74 08 4c 89 f7 e8 cd 52 09 f9 4d 8b 36 49 83 c6 18 4c 89 f0 48 c1 e8 03 <42> 80 3c 28 00 74 08 4c 89 f7 e8 b0 52 09 f9 49 8b 06 48 89 04 24
RSP: 0018:ffffc90000a38870 EFLAGS: 00010006
RAX: 0000000000000003 RBX: ffff8880226a3d88 RCX: ffff8880138e9f40
RDX: 8000000000000100 RSI: 0000000000000100 RDI: ffff8880212c0000
RBP: 000000000000008d R08: 0000000000000000 R09: 0000000000000000
R10: ffff8880226a3da8 R11: ffffffff89326430 R12: ffffffff914e4848
R13: dffffc0000000000 R14: 0000000000000018 R15: ffff8880212c0000
FS:  00007f91be9b8300(0000) GS:ffff88812351f000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f7a71415ff8 CR3: 0000000026f50000 CR4: 00000000003526f0
----------------
Code disassembly (best guess):
   0:	96                   	xchg   %eax,%esi
   1:	f8                   	clc
   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 28 00       	cmpb   $0x0,(%rax,%r13,1)
  12:	74 08                	je     0x1c
  14:	4c 89 f7             	mov    %r14,%rdi
  17:	e8 cd 52 09 f9       	call   0xf90952e9
  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 28 00       	cmpb   $0x0,(%rax,%r13,1) <-- trapping instruction
  2f:	74 08                	je     0x39
  31:	4c 89 f7             	mov    %r14,%rdi
  34:	e8 b0 52 09 f9       	call   0xf90952e9
  39:	49 8b 06             	mov    (%r14),%rax
  3c:	48 89 04 24          	mov    %rax,(%rsp)