general protection fault, probably for non-canonical address 0xdffffc0000000066: 0000 [#1] PREEMPT SMP KASAN KASAN: null-ptr-deref in range [0x0000000000000330-0x0000000000000337] CPU: 1 PID: 7038 Comm: syz.8.676 Not tainted syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 09/16/2026 RIP: 0010:wacom_intuos_irq+0x32d8/0x3380 drivers/hid/wacom_wac.c:1077 Code: 7c 24 30 e8 1a a1 0b fa e9 5c f1 ff ff e8 30 45 ba f9 49 81 c6 30 03 00 00 4c 89 f0 48 c1 e8 03 48 b9 00 00 00 00 00 fc ff df <80> 3c 08 00 74 08 4c 89 f7 e8 fa a0 0b fa 4d 8b 36 48 b8 00 00 00 RSP: 0018:ffffc90005637770 EFLAGS: 00010206 RAX: 0000000000000066 RBX: 1ffff1100efabc6b RCX: dffffc0000000000 RDX: ffffc9000ed5b000 RSI: 00000000000008ee RDI: 00000000000008ef RBP: ffff888077d5e038 R08: ffff888026968000 R09: 0000000000000007 R10: 0000000000000011 R11: 0000000000000002 R12: 1ffff1100efabc27 R13: 00000000000000bc R14: 0000000000000330 R15: dffffc0000000000 FS: 00007f89c9beb6c0(0000) GS:ffff8880b8d00000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007ffceb46af70 CR3: 000000005692f000 CR4: 00000000003506e0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: wacom_wac_irq+0x8d0/0x9780 drivers/hid/wacom_wac.c:3477 wacom_raw_event+0xa66/0xd80 drivers/hid/wacom_sys.c:170 hid_input_report+0x3fe/0x4f0 drivers/hid/hid-core.c:2129 uhid_dev_input2+0xb1/0x130 drivers/hid/uhid.c:611 uhid_char_write+0x376/0xaf0 drivers/hid/uhid.c:769 vfs_write+0x2dc/0x9a0 fs/read_write.c:582 ksys_write+0x14d/0x260 fs/read_write.c:637 do_syscall_x64 arch/x86/entry/common.c:46 [inline] do_syscall_64+0x4c/0xa0 arch/x86/entry/common.c:76 entry_SYSCALL_64_after_hwframe+0x68/0xd2 RIP: 0033:0x7f89c8d9f559 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:00007f89c9beb028 EFLAGS: 00000246 ORIG_RAX: 0000000000000001 RAX: ffffffffffffffda RBX: 00007f89c9026090 RCX: 00007f89c8d9f559 RDX: 0000000000000008 RSI: 0000200000000000 RDI: 0000000000000003 RBP: 00007f89c8e36b20 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 R13: 00007f89c9026128 R14: 00007f89c9026090 R15: 00007ffee01f0a38 Modules linked in: ---[ end trace 0000000000000000 ]--- RIP: 0010:wacom_intuos_irq+0x32d8/0x3380 drivers/hid/wacom_wac.c:1077 Code: 7c 24 30 e8 1a a1 0b fa e9 5c f1 ff ff e8 30 45 ba f9 49 81 c6 30 03 00 00 4c 89 f0 48 c1 e8 03 48 b9 00 00 00 00 00 fc ff df <80> 3c 08 00 74 08 4c 89 f7 e8 fa a0 0b fa 4d 8b 36 48 b8 00 00 00 RSP: 0018:ffffc90005637770 EFLAGS: 00010206 RAX: 0000000000000066 RBX: 1ffff1100efabc6b RCX: dffffc0000000000 RDX: ffffc9000ed5b000 RSI: 00000000000008ee RDI: 00000000000008ef RBP: ffff888077d5e038 R08: ffff888026968000 R09: 0000000000000007 R10: 0000000000000011 R11: 0000000000000002 R12: 1ffff1100efabc27 R13: 00000000000000bc R14: 0000000000000330 R15: dffffc0000000000 FS: 00007f89c9beb6c0(0000) GS:ffff8880b8d00000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007ffceb46af70 CR3: 000000005692f000 CR4: 00000000003506e0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 ---------------- Code disassembly (best guess), 1 bytes skipped: 0: 24 30 and $0x30,%al 2: e8 1a a1 0b fa call 0xfa0ba121 7: e9 5c f1 ff ff jmp 0xfffff168 c: e8 30 45 ba f9 call 0xf9ba4541 11: 49 81 c6 30 03 00 00 add $0x330,%r14 18: 4c 89 f0 mov %r14,%rax 1b: 48 c1 e8 03 shr $0x3,%rax 1f: 48 b9 00 00 00 00 00 movabs $0xdffffc0000000000,%rcx 26: fc ff df * 29: 80 3c 08 00 cmpb $0x0,(%rax,%rcx,1) <-- trapping instruction 2d: 74 08 je 0x37 2f: 4c 89 f7 mov %r14,%rdi 32: e8 fa a0 0b fa call 0xfa0ba131 37: 4d 8b 36 mov (%r14),%r14 3a: 48 rex.W 3b: b8 .byte 0xb8 3c: 00 00 add %al,(%rax)