kcov: kcov_start: t = ffff88802c7f8000, size = 524288, area = ffffc9000edbe000 Oops: general protection fault, probably for non-canonical address 0xdffffc0000000065: 0000 [#1] SMP KASAN PTI KASAN: null-ptr-deref in range [0x0000000000000328-0x000000000000032f] CPU: 1 UID: 0 PID: 10328 Comm: syz.7.937 Tainted: G L syzkaller #0 PREEMPT(full) Tainted: [L]=SOFTLOCKUP Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 07/24/2026 RIP: 0010:wacom_intuos_irq+0x3273/0x3350 drivers/hid/wacom_wac.c:1044 Code: f1 ff ff 48 8b 7c 24 38 e8 7a a6 0b f9 e9 2e f1 ff ff 49 81 c6 28 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 7f a6 0b f9 49 8b 1e 48 b8 00 00 00 RSP: 0018:ffffc900066578f0 EFLAGS: 00010206 RAX: 0000000000000065 RBX: 1ffff1100457da29 RCX: dffffc0000000000 RDX: ffffffff8932d3e6 RSI: ffffffff910e75c0 RDI: 000000000000008d RBP: 000000000000008d R08: ffff88802c7f8000 R09: 0000000000000007 R10: 0000000000000011 R11: 0000000000000002 R12: ffff8880583800ae R13: 1ffff1100457da40 R14: 0000000000000328 R15: 1ffff1100b070015 FS: 00007fddab6c66c0(0000) GS:ffff888123b8b000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007fddab6c5ff8 CR3: 0000000065de6000 CR4: 00000000003526f0 Call Trace: wacom_wac_irq+0x102d/0x9b90 drivers/hid/wacom_wac.c:3510 wacom_raw_event+0x9d2/0xd10 drivers/hid/wacom_sys.c:183 __hid_input_report+0x41c/0x580 drivers/hid/hid-core.c:2175 uhid_dev_input2+0xbc/0x150 drivers/hid/uhid.c:609 uhid_char_write+0x49c/0xc90 drivers/hid/uhid.c:767 vfs_write+0x296/0xba0 fs/read_write.c:685 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: 0033:0x7fddaa79e559 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:00007fddab6c6028 EFLAGS: 00000246 ORIG_RAX: 0000000000000001 RAX: ffffffffffffffda RBX: 00007fddaaa26090 RCX: 00007fddaa79e559 RDX: 0000000000000007 RSI: 00002000000007c0 RDI: 0000000000000003 RBP: 00007fddaa835ab8 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 R13: 00007fddaaa26128 R14: 00007fddaaa26090 R15: 00007ffe7105d9e8 Modules linked in: ---[ end trace 0000000000000000 ]--- RIP: 0010:wacom_intuos_irq+0x3273/0x3350 drivers/hid/wacom_wac.c:1044 Code: f1 ff ff 48 8b 7c 24 38 e8 7a a6 0b f9 e9 2e f1 ff ff 49 81 c6 28 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 7f a6 0b f9 49 8b 1e 48 b8 00 00 00 RSP: 0018:ffffc900066578f0 EFLAGS: 00010206 RAX: 0000000000000065 RBX: 1ffff1100457da29 RCX: dffffc0000000000 RDX: ffffffff8932d3e6 RSI: ffffffff910e75c0 RDI: 000000000000008d RBP: 000000000000008d R08: ffff88802c7f8000 R09: 0000000000000007 R10: 0000000000000011 R11: 0000000000000002 R12: ffff8880583800ae R13: 1ffff1100457da40 R14: 0000000000000328 R15: 1ffff1100b070015 FS: 00007fddab6c66c0(0000) GS:ffff888123b8b000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00005610f71d3410 CR3: 0000000065de6000 CR4: 00000000003526f0 ---------------- Code disassembly (best guess), 2 bytes skipped: 0: ff 48 8b decl -0x75(%rax) 3: 7c 24 jl 0x29 5: 38 e8 cmp %ch,%al 7: 7a a6 jp 0xffffffaf 9: 0b f9 or %ecx,%edi b: e9 2e f1 ff ff jmp 0xfffff13e 10: 49 81 c6 28 03 00 00 add $0x328,%r14 17: 4c 89 f0 mov %r14,%rax 1a: 48 c1 e8 03 shr $0x3,%rax 1e: 48 b9 00 00 00 00 00 movabs $0xdffffc0000000000,%rcx 25: fc ff df * 28: 80 3c 08 00 cmpb $0x0,(%rax,%rcx,1) <-- trapping instruction 2c: 74 08 je 0x36 2e: 4c 89 f7 mov %r14,%rdi 31: e8 7f a6 0b f9 call 0xf90ba6b5 36: 49 8b 1e mov (%r14),%rbx 39: 48 rex.W 3a: b8 .byte 0xb8 3b: 00 00 add %al,(%rax)