================================================================================
UBSAN: array-index-out-of-bounds in drivers/input/tablet/aiptek.c:741:31
index 58388 is out of range for type 'const int[34]'
CPU: 1 PID: 1477 Comm: syz.1.443 Not tainted syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 05/09/2026
Call Trace:
 <TASK>
 __dump_stack+0x21/0x30 lib/dump_stack.c:88
 dump_stack_lvl+0x110/0x170 lib/dump_stack.c:106
 dump_stack+0x15/0x20 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+0x32f/0x4f0 drivers/usb/core/hcd.c:1674
 usb_hcd_giveback_urb+0x11d/0x3f0 drivers/usb/core/hcd.c:1751
 dummy_timer+0xa34/0x31d0 drivers/usb/gadget/udc/dummy_hcd.c:1998
 call_timer_fn+0x38/0x290 kernel/time/timer.c:1459
 expire_timers kernel/time/timer.c:1504 [inline]
 __run_timers+0x637/0x9a0 kernel/time/timer.c:1775
 run_timer_softirq+0x6a/0xf0 kernel/time/timer.c:1788
 handle_softirqs+0x250/0x560 kernel/softirq.c:583
 __do_softirq kernel/softirq.c:621 [inline]
 invoke_softirq kernel/softirq.c:443 [inline]
 __irq_exit_rcu+0x52/0xf0 kernel/softirq.c:670
 irq_exit_rcu+0x9/0x10 kernel/softirq.c:682
 instr_sysvec_apic_timer_interrupt arch/x86/kernel/apic/apic.c:1108 [inline]
 sysvec_apic_timer_interrupt+0x58/0xc0 arch/x86/kernel/apic/apic.c:1108
 asm_sysvec_apic_timer_interrupt+0x1b/0x20 arch/x86/include/asm/idtentry.h:676
RIP: 0033:0x7f67a0b41335
Code: 72 f3 48 8d 46 f8 48 8b 76 f8 48 39 f2 73 13 66 0f 1f 44 00 00 48 8b 70 f8 48 83 e8 08 48 39 f2 72 f3 48 39 c3 73 3e 48 89 33 <48> 89 c6 48 83 c3 08 48 89 08 48 8b 0b 48 8b 55 00 eb c0 48 39 f2
RSP: 002b:00007fffce5e27b0 EFLAGS: 00000287
RAX: 00007f679f6d7e00 RBX: 00007f679f6d67d8 RCX: ffffffff81ae5411
RDX: ffffffff81ae530d RSI: ffffffff81adcc95 RDI: 00007f679f6d74c8
RBP: 00007f679f6d60a0 R08: 00007f67a0ed4000 R09: 00007f67a0ee9f40
R10: 0000000000000000 R11: 00000000000000ff R12: 00007f679f6d88f8
R13: 0000000000000017 R14: 000000000000050b R15: 0000000000000000
 </TASK>
================================================================================
==================================================================
BUG: KASAN: global-out-of-bounds in aiptek_irq+0x2063/0x29b0 drivers/input/tablet/aiptek.c:741
Read of size 4 at addr ffffffff858268f0 by task syz.1.443/1477

CPU: 1 PID: 1477 Comm: syz.1.443 Not tainted syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 05/09/2026
Call Trace:
 <TASK>
 __dump_stack+0x21/0x30 lib/dump_stack.c:88
 dump_stack_lvl+0x110/0x170 lib/dump_stack.c:106
 print_address_description+0x7f/0x2c0 mm/kasan/report.c:248
 __kasan_report mm/kasan/report.c:427 [inline]
 kasan_report+0x10f/0x150 mm/kasan/report.c:444
 __asan_report_load4_noabort+0x14/0x20 mm/kasan/report_generic.c:308
 aiptek_irq+0x2063/0x29b0 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:1751
 dummy_timer+0xa34/0x31d0 drivers/usb/gadget/udc/dummy_hcd.c:1998
 call_timer_fn+0x38/0x290 kernel/time/timer.c:1459
 expire_timers kernel/time/timer.c:1504 [inline]
 __run_timers+0x637/0x9a0 kernel/time/timer.c:1775
 run_timer_softirq+0x6a/0xf0 kernel/time/timer.c:1788
 handle_softirqs+0x250/0x560 kernel/softirq.c:583
 __do_softirq kernel/softirq.c:621 [inline]
 invoke_softirq kernel/softirq.c:443 [inline]
 __irq_exit_rcu+0x52/0xf0 kernel/softirq.c:670
 irq_exit_rcu+0x9/0x10 kernel/softirq.c:682
 instr_sysvec_apic_timer_interrupt arch/x86/kernel/apic/apic.c:1108 [inline]
 sysvec_apic_timer_interrupt+0x58/0xc0 arch/x86/kernel/apic/apic.c:1108
 asm_sysvec_apic_timer_interrupt+0x1b/0x20 arch/x86/include/asm/idtentry.h:676
RIP: 0033:0x7f67a0b41335
Code: 72 f3 48 8d 46 f8 48 8b 76 f8 48 39 f2 73 13 66 0f 1f 44 00 00 48 8b 70 f8 48 83 e8 08 48 39 f2 72 f3 48 39 c3 73 3e 48 89 33 <48> 89 c6 48 83 c3 08 48 89 08 48 8b 0b 48 8b 55 00 eb c0 48 39 f2
RSP: 002b:00007fffce5e27b0 EFLAGS: 00000287
RAX: 00007f679f6d7e00 RBX: 00007f679f6d67d8 RCX: ffffffff81ae5411
RDX: ffffffff81ae530d RSI: ffffffff81adcc95 RDI: 00007f679f6d74c8
RBP: 00007f679f6d60a0 R08: 00007f67a0ed4000 R09: 00007f67a0ee9f40
R10: 0000000000000000 R11: 00000000000000ff R12: 00007f679f6d88f8
R13: 0000000000000017 R14: 000000000000050b R15: 0000000000000000
 </TASK>

The buggy address belongs to the variable:
 .str.48+0x50/0x60

Memory state around the buggy address:
 ffffffff85826780: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
 ffffffff85826800: f9 f9 f9 f9 f9 f9 f9 f9 f9 f9 f9 f9 f9 f9 f9 f9
>ffffffff85826880: 00 f9 f9 f9 00 00 00 00 03 f9 f9 f9 f9 f9 f9 f9
                                                             ^
 ffffffff85826900: 00 03 f9 f9 00 04 f9 f9 00 04 f9 f9 00 05 f9 f9
 ffffffff85826980: 00 00 00 04 f9 f9 f9 f9 00 00 f9 f9 00 00 00 00
==================================================================
================================================================================
UBSAN: array-index-out-of-bounds in drivers/input/tablet/aiptek.c:763:30
index 58389 is out of range for type 'const int[34]'
CPU: 1 PID: 1477 Comm: syz.1.443 Tainted: G    B             syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 05/09/2026
Call Trace:
 <TASK>
 __dump_stack+0x21/0x30 lib/dump_stack.c:88
 dump_stack_lvl+0x110/0x170 lib/dump_stack.c:106
 dump_stack+0x15/0x20 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+0x32f/0x4f0 drivers/usb/core/hcd.c:1674
 usb_hcd_giveback_urb+0x11d/0x3f0 drivers/usb/core/hcd.c:1751
 dummy_timer+0xa34/0x31d0 drivers/usb/gadget/udc/dummy_hcd.c:1998
 call_timer_fn+0x38/0x290 kernel/time/timer.c:1459
 expire_timers kernel/time/timer.c:1504 [inline]
 __run_timers+0x637/0x9a0 kernel/time/timer.c:1775
 run_timer_softirq+0x6a/0xf0 kernel/time/timer.c:1788
 handle_softirqs+0x250/0x560 kernel/softirq.c:583
 __do_softirq kernel/softirq.c:621 [inline]
 invoke_softirq kernel/softirq.c:443 [inline]
 __irq_exit_rcu+0x52/0xf0 kernel/softirq.c:670
 irq_exit_rcu+0x9/0x10 kernel/softirq.c:682
 instr_sysvec_apic_timer_interrupt arch/x86/kernel/apic/apic.c:1108 [inline]
 sysvec_apic_timer_interrupt+0x58/0xc0 arch/x86/kernel/apic/apic.c:1108
 asm_sysvec_apic_timer_interrupt+0x1b/0x20 arch/x86/include/asm/idtentry.h:676
RIP: 0033:0x7f67a0b41335
Code: 72 f3 48 8d 46 f8 48 8b 76 f8 48 39 f2 73 13 66 0f 1f 44 00 00 48 8b 70 f8 48 83 e8 08 48 39 f2 72 f3 48 39 c3 73 3e 48 89 33 <48> 89 c6 48 83 c3 08 48 89 08 48 8b 0b 48 8b 55 00 eb c0 48 39 f2
RSP: 002b:00007fffce5e27b0 EFLAGS: 00000287
RAX: 00007f679f6d7e00 RBX: 00007f679f6d67d8 RCX: ffffffff81ae5411
RDX: ffffffff81ae530d RSI: ffffffff81adcc95 RDI: 00007f679f6d74c8
RBP: 00007f679f6d60a0 R08: 00007f67a0ed4000 R09: 00007f67a0ee9f40
R10: 0000000000000000 R11: 00000000000000ff R12: 00007f679f6d88f8
R13: 0000000000000017 R14: 000000000000050b R15: 0000000000000000
 </TASK>
================================================================================
aiptek 4-1:0.0: aiptek_irq - usb_submit_urb failed with result -19