kcov: kcov_start: t = ffff88802ceea580, size = 524288, area = ffffc9000fc9a000
Oops: general protection fault, probably for non-canonical address 0xdffffc0000000065: 0000 [#1] SMP KASAN NOPTI
KASAN: null-ptr-deref in range [0x0000000000000328-0x000000000000032f]
CPU: 1 UID: 0 PID: 30331 Comm: syz.0.7174 Tainted: G             L      syzkaller #0 PREEMPT(full) 
Tainted: [L]=SOFTLOCKUP
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 08/26/2026
RIP: 0010:wacom_intuos_irq+0x62b/0x3430 drivers/hid/wacom_wac.c:1036
Code: e9 0a 27 ba 02 e8 75 92 f1 f8 48 8b 04 24 44 0f b6 c5 48 8d b8 28 03 00 00 48 b8 00 00 00 00 00 fc ff df 48 89 fa 48 c1 ea 03 <80> 3c 02 00 0f 85 d4 27 00 00 48 8b 04 24 48 c7 c7 38 d8 3e 91 48
RSP: 0018:ffffc90006dd79f8 EFLAGS: 00010206
RAX: dffffc0000000000 RBX: ffff88805dd2c0ae RCX: ffffc9000fc9a000
RDX: 0000000000000065 RSI: ffffffff891a901b RDI: 0000000000000328
RBP: 0000000000000000 R08: 0000000000000000 R09: 0000000000000011
R10: 0000000000000000 R11: 0000000000000001 R12: 0000000000001000
R13: ffff8880618d1048 R14: 0000000000000000 R15: 0000000000000021
FS:  00007f37f04396c0(0000) GS:ffff888123c53000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f37f0438ff8 CR3: 000000004dd6c000 CR4: 00000000003526f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000063235cd5
DR3: 0000000000007000 DR6: 00000000ffff0ff0 DR7: 0000000000000400
Call Trace:
 <TASK>
 wacom_bpt_irq drivers/hid/wacom_wac.c:3290 [inline]
 wacom_wac_irq+0x196b/0xab80 drivers/hid/wacom_wac.c:3560
 wacom_raw_event+0x6db/0xbf0 drivers/hid/wacom_sys.c:182
 __hid_input_report.constprop.0+0x319/0x470 drivers/hid/hid-core.c:2175
 uhid_dev_input2 drivers/hid/uhid.c:609 [inline]
 uhid_char_write+0xb6b/0x10e0 drivers/hid/uhid.c:767
 vfs_write+0x2aa/0x1050 fs/read_write.c:685
 ksys_write+0x1f8/0x250 fs/read_write.c:739
 do_syscall_x64 arch/x86/entry/syscall_64.c:61 [inline]
 do_syscall_64+0x123/0x790 arch/x86/entry/syscall_64.c:84
 entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7f37ef59e159
Code: ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 44 00 00 48 89 f8 48 89 f7 48 89 d6 48 89 ca 4d 89 c2 4d 89 c8 4c 8b 4c 24 08 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 c7 c1 e8 ff ff ff f7 d8 64 89 01 48
RSP: 002b:00007f37f0439028 EFLAGS: 00000246 ORIG_RAX: 0000000000000001
RAX: ffffffffffffffda RBX: 00007f37ef826090 RCX: 00007f37ef59e159
RDX: 0000000000000010 RSI: 0000200000000300 RDI: 0000000000000003
RBP: 00007f37ef63506b R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 00007f37ef826128 R14: 00007f37ef826090 R15: 00007ffcbb7db948
 </TASK>
Modules linked in:
---[ end trace 0000000000000000 ]---
RIP: 0010:wacom_intuos_irq+0x62b/0x3430 drivers/hid/wacom_wac.c:1036
Code: e9 0a 27 ba 02 e8 75 92 f1 f8 48 8b 04 24 44 0f b6 c5 48 8d b8 28 03 00 00 48 b8 00 00 00 00 00 fc ff df 48 89 fa 48 c1 ea 03 <80> 3c 02 00 0f 85 d4 27 00 00 48 8b 04 24 48 c7 c7 38 d8 3e 91 48
RSP: 0018:ffffc90006dd79f8 EFLAGS: 00010206
RAX: dffffc0000000000 RBX: ffff88805dd2c0ae RCX: ffffc9000fc9a000
RDX: 0000000000000065 RSI: ffffffff891a901b RDI: 0000000000000328
RBP: 0000000000000000 R08: 0000000000000000 R09: 0000000000000011
R10: 0000000000000000 R11: 0000000000000001 R12: 0000000000001000
R13: ffff8880618d1048 R14: 0000000000000000 R15: 0000000000000021
FS:  00007f37f04396c0(0000) GS:ffff888123c53000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f37f0438ff8 CR3: 000000004dd6c000 CR4: 00000000003526f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000063235cd5
DR3: 0000000000007000 DR6: 00000000ffff0ff0 DR7: 0000000000000400
----------------
Code disassembly (best guess):
   0:	e9 0a 27 ba 02       	jmp    0x2ba270f
   5:	e8 75 92 f1 f8       	call   0xf8f1927f
   a:	48 8b 04 24          	mov    (%rsp),%rax
   e:	44 0f b6 c5          	movzbl %bpl,%r8d
  12:	48 8d b8 28 03 00 00 	lea    0x328(%rax),%rdi
  19:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
  20:	fc ff df
  23:	48 89 fa             	mov    %rdi,%rdx
  26:	48 c1 ea 03          	shr    $0x3,%rdx
* 2a:	80 3c 02 00          	cmpb   $0x0,(%rdx,%rax,1) <-- trapping instruction
  2e:	0f 85 d4 27 00 00    	jne    0x2808
  34:	48 8b 04 24          	mov    (%rsp),%rax
  38:	48 c7 c7 38 d8 3e 91 	mov    $0xffffffff913ed838,%rdi
  3f:	48                   	rex.W