================================================================================
UBSAN: array-index-out-of-bounds in drivers/input/tablet/aiptek.c:741:31
index 65092 is out of range for type 'const int[34]'
CPU: 0 PID: 849 Comm: syz.1.142 Not tainted syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 07/24/2026
Call Trace:
 <TASK>
 __dump_stack+0x21/0x24 lib/dump_stack.c:88
 dump_stack_lvl+0x110/0x170 lib/dump_stack.c:106
 dump_stack+0x15/0x24 lib/dump_stack.c:113
 ubsan_epilogue+0xe/0x40 lib/ubsan.c:151
 __ubsan_handle_out_of_bounds+0xdf/0xf0 lib/ubsan.c:282
 aiptek_irq+0x2045/0x29b0 drivers/input/tablet/aiptek.c:741
 __usb_hcd_giveback_urb+0x360/0x520 drivers/usb/core/hcd.c:1675
 usb_hcd_giveback_urb+0x11f/0x3e0 drivers/usb/core/hcd.c:1758
 dummy_timer+0xa25/0x3270 drivers/usb/gadget/udc/dummy_hcd.c:2004
 __run_hrtimer kernel/time/hrtimer.c:1685 [inline]
 __hrtimer_run_queues+0x398/0x890 kernel/time/hrtimer.c:1749
 hrtimer_run_softirq+0x19b/0x260 kernel/time/hrtimer.c:1766
 handle_softirqs+0x1d7/0x600 kernel/softirq.c:642
 __do_softirq kernel/softirq.c:680 [inline]
 invoke_softirq kernel/softirq.c:497 [inline]
 __irq_exit_rcu+0x52/0xf0 kernel/softirq.c:729
 irq_exit_rcu+0x9/0x10 kernel/softirq.c:741
 instr_sysvec_apic_timer_interrupt arch/x86/kernel/apic/apic.c:1118 [inline]
 sysvec_apic_timer_interrupt+0x58/0xc0 arch/x86/kernel/apic/apic.c:1118
 asm_sysvec_apic_timer_interrupt+0x1b/0x20 arch/x86/include/asm/idtentry.h:691
RIP: 0033:0x7f90d8c72674
Code: 48 89 d3 74 28 25 ff 0f 00 00 83 f0 3d 8d 04 c0 89 c3 c1 eb 04 31 c3 69 db 2d eb d4 27 89 d8 c1 e8 0f 31 c3 81 e3 ff 0f 00 00 <48> 31 d3 80 3d ca f9 3a 00 00 0f 84 1c 01 00 00 4c 89 f6 48 8b 0d
RSP: 002b:00007ffeea8ab760 EFLAGS: 00000202
RAX: 000000000000f2c9 RBX: 0000000000000504 RCX: ffffffff81578e7f
RDX: ffffffff81578b7b RSI: ffffffff81578e7f RDI: 00007f90d77f9008
RBP: 0000000000000000 R08: 00007f90d9010000 R09: 00007f90d9012000
R10: 0000000081578e83 R11: 00000000000000ff R12: 00007f90d9025f40
R13: 000000000000f70f R14: ffffffff81578b7b R15: 00007f90d9b55720
 </TASK>
================================================================================
==================================================================
BUG: KASAN: global-out-of-bounds in aiptek_irq+0x2063/0x29b0 drivers/input/tablet/aiptek.c:741
Read of size 4 at addr ffffffff85ea4e10 by task syz.1.142/849

CPU: 0 PID: 849 Comm: syz.1.142 Not tainted syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 07/24/2026
Call Trace:
 <TASK>
 __dump_stack+0x21/0x24 lib/dump_stack.c:88
 dump_stack_lvl+0x110/0x170 lib/dump_stack.c:106
 print_address_description+0x71/0x200 mm/kasan/report.c:316
 print_report+0x4a/0x60 mm/kasan/report.c:420
 kasan_report+0x122/0x150 mm/kasan/report.c:524
 __asan_report_load4_noabort+0x14/0x20 mm/kasan/report_generic.c:350
 aiptek_irq+0x2063/0x29b0 drivers/input/tablet/aiptek.c:741
 __usb_hcd_giveback_urb+0x360/0x520 drivers/usb/core/hcd.c:1675
 usb_hcd_giveback_urb+0x11f/0x3e0 drivers/usb/core/hcd.c:1758
 dummy_timer+0xa25/0x3270 drivers/usb/gadget/udc/dummy_hcd.c:2004
 __run_hrtimer kernel/time/hrtimer.c:1685 [inline]
 __hrtimer_run_queues+0x398/0x890 kernel/time/hrtimer.c:1749
 hrtimer_run_softirq+0x19b/0x260 kernel/time/hrtimer.c:1766
 handle_softirqs+0x1d7/0x600 kernel/softirq.c:642
 __do_softirq kernel/softirq.c:680 [inline]
 invoke_softirq kernel/softirq.c:497 [inline]
 __irq_exit_rcu+0x52/0xf0 kernel/softirq.c:729
 irq_exit_rcu+0x9/0x10 kernel/softirq.c:741
 instr_sysvec_apic_timer_interrupt arch/x86/kernel/apic/apic.c:1118 [inline]
 sysvec_apic_timer_interrupt+0x58/0xc0 arch/x86/kernel/apic/apic.c:1118
 asm_sysvec_apic_timer_interrupt+0x1b/0x20 arch/x86/include/asm/idtentry.h:691
RIP: 0033:0x7f90d8c72674
Code: 48 89 d3 74 28 25 ff 0f 00 00 83 f0 3d 8d 04 c0 89 c3 c1 eb 04 31 c3 69 db 2d eb d4 27 89 d8 c1 e8 0f 31 c3 81 e3 ff 0f 00 00 <48> 31 d3 80 3d ca f9 3a 00 00 0f 84 1c 01 00 00 4c 89 f6 48 8b 0d
RSP: 002b:00007ffeea8ab760 EFLAGS: 00000202
RAX: 000000000000f2c9 RBX: 0000000000000504 RCX: ffffffff81578e7f
RDX: ffffffff81578b7b RSI: ffffffff81578e7f RDI: 00007f90d77f9008
RBP: 0000000000000000 R08: 00007f90d9010000 R09: 00007f90d9012000
R10: 0000000081578e83 R11: 00000000000000ff R12: 00007f90d9025f40
R13: 000000000000f70f R14: ffffffff81578b7b R15: 00007f90d9b55720
 </TASK>

The buggy address belongs to the variable:
 .str.111+0x50/0x60

The buggy address belongs to the physical page:
page:ffffea000017a900 refcount:1 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x5ea4
flags: 0x1000(reserved|zone=0)
raw: 0000000000001000 ffffea000017a908 ffffea000017a908 0000000000000000
raw: 0000000000000000 0000000000000000 00000001ffffffff 0000000000000000
page dumped because: kasan: bad access detected
page_owner info is not present (never set?)

Memory state around the buggy address:
 ffffffff85ea4d00: 01 f9 f9 f9 00 00 00 00 00 00 00 f9 f9 f9 f9 f9
 ffffffff85ea4d80: 00 f9 f9 f9 00 f9 f9 f9 00 00 00 00 00 00 00 01
>ffffffff85ea4e00: f9 f9 f9 f9 00 00 00 00 00 00 03 f9 f9 f9 f9 f9
                         ^
 ffffffff85ea4e80: 00 00 00 00 00 00 07 f9 f9 f9 f9 f9 00 00 00 00
 ffffffff85ea4f00: 00 00 00 00 07 f9 f9 f9 f9 f9 f9 f9 00 00 00 00
==================================================================
================================================================================
UBSAN: array-index-out-of-bounds in drivers/input/tablet/aiptek.c:763:30
index 65093 is out of range for type 'const int[34]'
CPU: 0 PID: 849 Comm: syz.1.142 Tainted: G    B              syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 07/24/2026
Call Trace:
 <TASK>
 __dump_stack+0x21/0x24 lib/dump_stack.c:88
 dump_stack_lvl+0x110/0x170 lib/dump_stack.c:106
 dump_stack+0x15/0x24 lib/dump_stack.c:113
 ubsan_epilogue+0xe/0x40 lib/ubsan.c:151
 __ubsan_handle_out_of_bounds+0xdf/0xf0 lib/ubsan.c:282
 aiptek_irq+0x1f14/0x29b0 drivers/input/tablet/aiptek.c:763
 __usb_hcd_giveback_urb+0x360/0x520 drivers/usb/core/hcd.c:1675
 usb_hcd_giveback_urb+0x11f/0x3e0 drivers/usb/core/hcd.c:1758
 dummy_timer+0xa25/0x3270 drivers/usb/gadget/udc/dummy_hcd.c:2004
 __run_hrtimer kernel/time/hrtimer.c:1685 [inline]
 __hrtimer_run_queues+0x398/0x890 kernel/time/hrtimer.c:1749
 hrtimer_run_softirq+0x19b/0x260 kernel/time/hrtimer.c:1766
 handle_softirqs+0x1d7/0x600 kernel/softirq.c:642
 __do_softirq kernel/softirq.c:680 [inline]
 invoke_softirq kernel/softirq.c:497 [inline]
 __irq_exit_rcu+0x52/0xf0 kernel/softirq.c:729
 irq_exit_rcu+0x9/0x10 kernel/softirq.c:741
 instr_sysvec_apic_timer_interrupt arch/x86/kernel/apic/apic.c:1118 [inline]
 sysvec_apic_timer_interrupt+0x58/0xc0 arch/x86/kernel/apic/apic.c:1118
 asm_sysvec_apic_timer_interrupt+0x1b/0x20 arch/x86/include/asm/idtentry.h:691
RIP: 0033:0x7f90d8c72674
Code: 48 89 d3 74 28 25 ff 0f 00 00 83 f0 3d 8d 04 c0 89 c3 c1 eb 04 31 c3 69 db 2d eb d4 27 89 d8 c1 e8 0f 31 c3 81 e3 ff 0f 00 00 <48> 31 d3 80 3d ca f9 3a 00 00 0f 84 1c 01 00 00 4c 89 f6 48 8b 0d
RSP: 002b:00007ffeea8ab760 EFLAGS: 00000202
RAX: 000000000000f2c9 RBX: 0000000000000504 RCX: ffffffff81578e7f
RDX: ffffffff81578b7b RSI: ffffffff81578e7f RDI: 00007f90d77f9008
RBP: 0000000000000000 R08: 00007f90d9010000 R09: 00007f90d9012000
R10: 0000000081578e83 R11: 00000000000000ff R12: 00007f90d9025f40
R13: 000000000000f70f R14: ffffffff81578b7b R15: 00007f90d9b55720
 </TASK>
================================================================================
aiptek 2-1:0.0: aiptek_irq - usb_submit_urb failed with result -19