================================================================================
UBSAN: array-index-out-of-bounds in drivers/input/tablet/aiptek.c:741:31
index 1023 is out of range for type 'const int[34]'
CPU: 1 PID: 13417 Comm: syz.2.4015 Tainted: G        W         syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 05/09/2026
Call Trace:
 <IRQ>
 __dump_stack+0x21/0x24 lib/dump_stack.c:77
 dump_stack_lvl+0x1a7/0x208 lib/dump_stack.c:118
 dump_stack+0x15/0x1c lib/dump_stack.c:135
 ubsan_epilogue+0xe/0x40 lib/ubsan.c:148
 __ubsan_handle_out_of_bounds+0xdf/0xf0 lib/ubsan.c:347
 aiptek_irq+0x1fa2/0x2860 drivers/input/tablet/aiptek.c:741
 __usb_hcd_giveback_urb+0x32f/0x4f0 drivers/usb/core/hcd.c:1674
 usb_hcd_giveback_urb+0x11d/0x3f0 drivers/usb/core/hcd.c:1748
 dummy_timer+0xa34/0x31d0 drivers/usb/gadget/udc/dummy_hcd.c:1986
 call_timer_fn+0x38/0x290 kernel/time/timer.c:1450
 expire_timers kernel/time/timer.c:1495 [inline]
 __run_timers+0x637/0x9a0 kernel/time/timer.c:1789
 run_timer_softirq+0x6a/0xf0 kernel/time/timer.c:1802
 __do_softirq+0x255/0x563 kernel/softirq.c:309
 asm_call_irq_on_stack+0xf/0x20
 </IRQ>
 __run_on_irqstack arch/x86/include/asm/irq_stack.h:26 [inline]
 run_on_irqstack_cond arch/x86/include/asm/irq_stack.h:77 [inline]
 do_softirq_own_stack+0x60/0x80 arch/x86/kernel/irq_64.c:77
 invoke_softirq kernel/softirq.c:405 [inline]
 __irq_exit_rcu+0x128/0x150 kernel/softirq.c:435
 irq_exit_rcu+0x9/0x10 kernel/softirq.c:447
 sysvec_apic_timer_interrupt+0xbf/0xe0 arch/x86/kernel/apic/apic.c:1106
 asm_sysvec_apic_timer_interrupt+0x12/0x20 arch/x86/include/asm/idtentry.h:635
RIP: 0033:0x7f45377941ce
Code: c1 49 39 4f 08 72 54 8d 4d ff 85 ed 74 3b 66 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 00 48 39 f0 72 1b 4d 8b 07 49 89 c1 49 29 f1 <47> 0f b6 0c 08 45 84 c9 74 08 45 88 0c 00 49 8b 47 10 48 83 c0 01
RSP: 002b:00007f4536336470 EFLAGS: 00000206
RAX: 00000000005b8ccb RBX: 00007f4536336530 RCX: 0000000000000024
RDX: 0000000000000000 RSI: 0000000000000001 RDI: 00007f45363365d0
RBP: 0000000000000102 R08: 00007f452df17000 R09: 00000000005b8cca
R10: 0000000000000000 R11: 00007f4536336540 R12: 0000000000000001
R13: 00007f4537992aa0 R14: 0000000000000000 R15: 00007f45363365d0
================================================================================
==================================================================
BUG: KASAN: global-out-of-bounds in aiptek_irq+0x1fc0/0x2860 drivers/input/tablet/aiptek.c:741
Read of size 4 at addr ffffffff855ae65c by task syz.2.4015/13417

CPU: 1 PID: 13417 Comm: syz.2.4015 Tainted: G        W         syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 05/09/2026
Call Trace:
 <IRQ>
 __dump_stack+0x21/0x24 lib/dump_stack.c:77
 dump_stack_lvl+0x1a7/0x208 lib/dump_stack.c:118
 print_address_description+0x7f/0x2c0 mm/kasan/report.c:248
 __kasan_report mm/kasan/report.c:435 [inline]
 kasan_report+0x100/0x140 mm/kasan/report.c:452
 __asan_report_load4_noabort+0x14/0x20 mm/kasan/report_generic.c:308
 aiptek_irq+0x1fc0/0x2860 drivers/input/tablet/aiptek.c:741
 __usb_hcd_giveback_urb+0x32f/0x4f0 drivers/usb/core/hcd.c:1674
 usb_hcd_giveback_urb+0x11d/0x3f0 drivers/usb/core/hcd.c:1748
 dummy_timer+0xa34/0x31d0 drivers/usb/gadget/udc/dummy_hcd.c:1986
 call_timer_fn+0x38/0x290 kernel/time/timer.c:1450
 expire_timers kernel/time/timer.c:1495 [inline]
 __run_timers+0x637/0x9a0 kernel/time/timer.c:1789
 run_timer_softirq+0x6a/0xf0 kernel/time/timer.c:1802
 __do_softirq+0x255/0x563 kernel/softirq.c:309
 asm_call_irq_on_stack+0xf/0x20
 </IRQ>
 __run_on_irqstack arch/x86/include/asm/irq_stack.h:26 [inline]
 run_on_irqstack_cond arch/x86/include/asm/irq_stack.h:77 [inline]
 do_softirq_own_stack+0x60/0x80 arch/x86/kernel/irq_64.c:77
 invoke_softirq kernel/softirq.c:405 [inline]
 __irq_exit_rcu+0x128/0x150 kernel/softirq.c:435
 irq_exit_rcu+0x9/0x10 kernel/softirq.c:447
 sysvec_apic_timer_interrupt+0xbf/0xe0 arch/x86/kernel/apic/apic.c:1106
 asm_sysvec_apic_timer_interrupt+0x12/0x20 arch/x86/include/asm/idtentry.h:635
RIP: 0033:0x7f45377941ce
Code: c1 49 39 4f 08 72 54 8d 4d ff 85 ed 74 3b 66 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 00 48 39 f0 72 1b 4d 8b 07 49 89 c1 49 29 f1 <47> 0f b6 0c 08 45 84 c9 74 08 45 88 0c 00 49 8b 47 10 48 83 c0 01
RSP: 002b:00007f4536336470 EFLAGS: 00000206
RAX: 00000000005b8ccb RBX: 00007f4536336530 RCX: 0000000000000024
RDX: 0000000000000000 RSI: 0000000000000001 RDI: 00007f45363365d0
RBP: 0000000000000102 R08: 00007f452df17000 R09: 00000000005b8cca
R10: 0000000000000000 R11: 00007f4536336540 R12: 0000000000000001
R13: 00007f4537992aa0 R14: 0000000000000000 R15: 00007f45363365d0

The buggy address belongs to the variable:
 .str.5+0x3c/0x40

Memory state around the buggy address:
 ffffffff855ae500: 00 00 00 00 00 00 00 00 00 00 00 00 05 f9 f9 f9
 ffffffff855ae580: 00 00 f9 f9 00 00 00 07 f9 f9 f9 f9 00 00 00 f9
>ffffffff855ae600: f9 f9 f9 f9 00 00 00 05 f9 f9 f9 f9 00 00 00 00
                                                    ^
 ffffffff855ae680: 00 00 00 00 00 f9 f9 f9 f9 f9 f9 f9 00 00 00 03
 ffffffff855ae700: f9 f9 f9 f9 00 00 00 00 00 00 01 f9 f9 f9 f9 f9
==================================================================
================================================================================
UBSAN: array-index-out-of-bounds in drivers/input/tablet/aiptek.c:763:30
index 1024 is out of range for type 'const int[34]'
CPU: 1 PID: 13417 Comm: syz.2.4015 Tainted: G    B   W         syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 05/09/2026
Call Trace:
 <IRQ>
 __dump_stack+0x21/0x24 lib/dump_stack.c:77
 dump_stack_lvl+0x1a7/0x208 lib/dump_stack.c:118
 dump_stack+0x15/0x1c lib/dump_stack.c:135
 ubsan_epilogue+0xe/0x40 lib/ubsan.c:148
 __ubsan_handle_out_of_bounds+0xdf/0xf0 lib/ubsan.c:347
 aiptek_irq+0x1e71/0x2860 drivers/input/tablet/aiptek.c:763
 __usb_hcd_giveback_urb+0x32f/0x4f0 drivers/usb/core/hcd.c:1674
 usb_hcd_giveback_urb+0x11d/0x3f0 drivers/usb/core/hcd.c:1748
 dummy_timer+0xa34/0x31d0 drivers/usb/gadget/udc/dummy_hcd.c:1986
 call_timer_fn+0x38/0x290 kernel/time/timer.c:1450
 expire_timers kernel/time/timer.c:1495 [inline]
 __run_timers+0x637/0x9a0 kernel/time/timer.c:1789
 run_timer_softirq+0x6a/0xf0 kernel/time/timer.c:1802
 __do_softirq+0x255/0x563 kernel/softirq.c:309
 asm_call_irq_on_stack+0xf/0x20
 </IRQ>
 __run_on_irqstack arch/x86/include/asm/irq_stack.h:26 [inline]
 run_on_irqstack_cond arch/x86/include/asm/irq_stack.h:77 [inline]
 do_softirq_own_stack+0x60/0x80 arch/x86/kernel/irq_64.c:77
 invoke_softirq kernel/softirq.c:405 [inline]
 __irq_exit_rcu+0x128/0x150 kernel/softirq.c:435
 irq_exit_rcu+0x9/0x10 kernel/softirq.c:447
 sysvec_apic_timer_interrupt+0xbf/0xe0 arch/x86/kernel/apic/apic.c:1106
 asm_sysvec_apic_timer_interrupt+0x12/0x20 arch/x86/include/asm/idtentry.h:635
RIP: 0033:0x7f45377941ce
Code: c1 49 39 4f 08 72 54 8d 4d ff 85 ed 74 3b 66 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 00 48 39 f0 72 1b 4d 8b 07 49 89 c1 49 29 f1 <47> 0f b6 0c 08 45 84 c9 74 08 45 88 0c 00 49 8b 47 10 48 83 c0 01
RSP: 002b:00007f4536336470 EFLAGS: 00000206
RAX: 00000000005b8ccb RBX: 00007f4536336530 RCX: 0000000000000024
RDX: 0000000000000000 RSI: 0000000000000001 RDI: 00007f45363365d0
RBP: 0000000000000102 R08: 00007f452df17000 R09: 00000000005b8cca
R10: 0000000000000000 R11: 00007f4536336540 R12: 0000000000000001
R13: 00007f4537992aa0 R14: 0000000000000000 R15: 00007f45363365d0
================================================================================
aiptek 4-1:0.0: aiptek_irq - usb_submit_urb failed with result -19