------------[ cut here ]------------
UBSAN: array-index-out-of-bounds in drivers/input/tablet/aiptek.c:741:31
index 1279 is out of range for type 'const int[34]'
CPU: 0 UID: 101 PID: 148 Comm: dhcpcd Not tainted syzkaller #0 24d49bbd58fde8b05052ac524e35fadc70590708
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 07/24/2026
Call Trace:
 <TASK>
 __dump_stack+0x21/0x30 lib/dump_stack.c:94
 dump_stack_lvl+0x140/0x1c0 lib/dump_stack.c:120
 dump_stack+0x19/0x20 lib/dump_stack.c:129
 ubsan_epilogue+0xe/0x40 lib/ubsan.c:231
 __ubsan_handle_out_of_bounds+0xe8/0xf0 lib/ubsan.c:429
 aiptek_irq+0x208d/0x2a00 drivers/input/tablet/aiptek.c:741
 __usb_hcd_giveback_urb+0x36e/0x530 drivers/usb/core/hcd.c:1648
 usb_hcd_giveback_urb+0x12b/0x400 drivers/usb/core/hcd.c:1732
 dummy_timer+0xa3f/0x4900 drivers/usb/gadget/udc/dummy_hcd.c:2003
 __run_hrtimer kernel/time/hrtimer.c:1757 [inline]
 __hrtimer_run_queues+0x3ae/0x8e0 kernel/time/hrtimer.c:1821
 hrtimer_run_softirq+0x159/0x560 kernel/time/hrtimer.c:1838
 handle_softirqs+0x1aa/0x620 kernel/softirq.c:621
 __do_softirq kernel/softirq.c:659 [inline]
 invoke_softirq kernel/softirq.c:476 [inline]
 __irq_exit_rcu+0x47/0xb0 kernel/softirq.c:708
 irq_exit_rcu+0xd/0x30 kernel/softirq.c:720
 instr_sysvec_apic_timer_interrupt arch/x86/kernel/apic/apic.c:1049 [inline]
 sysvec_apic_timer_interrupt+0x44/0x90 arch/x86/kernel/apic/apic.c:1049
 asm_sysvec_apic_timer_interrupt+0x1f/0x30 arch/x86/include/asm/idtentry.h:702
RIP: 0033:0x7f958b3796eb
Code: 59 fe ff ff 66 2e 0f 1f 84 00 00 00 00 00 90 c4 41 01 ef ff 89 f8 09 f0 c1 e0 14 3d 00 00 00 f8 0f 87 29 03 00 00 c5 fe 6f 07 <c5> fd 74 0e c5 85 74 d0 c5 ed df c9 c5 fd d7 c9 ff c1 74 61 90 f3
RSP: 002b:00007ffe45e1bfc8 EFLAGS: 00000287
RAX: 00000000ef700000 RBX: 00007ffe45e1c637 RCX: 0000000000000073
RDX: 0000000000000000 RSI: 00007ffe45e1c637 RDI: 000055efec4e0ee5
RBP: 00007ffe45e1c63d R08: 00007ffe45e1c63d R09: 00007ffe45e1c0a0
R10: 00007f958b397fe0 R11: 00007f958b3988e0 R12: 000055efec4f3da0
R13: 000055efec4f37a0 R14: 0000000000000030 R15: 00007ffe45e1c0a8
 </TASK>
---[ end trace ]---
==================================================================
BUG: KASAN: global-out-of-bounds in aiptek_irq+0x20ab/0x2a00 drivers/input/tablet/aiptek.c:741
Read of size 4 at addr ffffffff86705b3c by task dhcpcd/148

CPU: 0 UID: 101 PID: 148 Comm: dhcpcd Not tainted syzkaller #0 24d49bbd58fde8b05052ac524e35fadc70590708
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 07/24/2026
Call Trace:
 <TASK>
 __dump_stack+0x21/0x30 lib/dump_stack.c:94
 dump_stack_lvl+0x140/0x1c0 lib/dump_stack.c:120
 print_address_description+0x71/0x210 mm/kasan/report.c:377
 print_report+0x4a/0x70 mm/kasan/report.c:481
 kasan_report+0x162/0x1a0 mm/kasan/report.c:594
 __asan_report_load4_noabort+0x18/0x20 mm/kasan/report_generic.c:380
 aiptek_irq+0x20ab/0x2a00 drivers/input/tablet/aiptek.c:741
 __usb_hcd_giveback_urb+0x36e/0x530 drivers/usb/core/hcd.c:1648
 usb_hcd_giveback_urb+0x12b/0x400 drivers/usb/core/hcd.c:1732
 dummy_timer+0xa3f/0x4900 drivers/usb/gadget/udc/dummy_hcd.c:2003
 __run_hrtimer kernel/time/hrtimer.c:1757 [inline]
 __hrtimer_run_queues+0x3ae/0x8e0 kernel/time/hrtimer.c:1821
 hrtimer_run_softirq+0x159/0x560 kernel/time/hrtimer.c:1838
 handle_softirqs+0x1aa/0x620 kernel/softirq.c:621
 __do_softirq kernel/softirq.c:659 [inline]
 invoke_softirq kernel/softirq.c:476 [inline]
 __irq_exit_rcu+0x47/0xb0 kernel/softirq.c:708
 irq_exit_rcu+0xd/0x30 kernel/softirq.c:720
 instr_sysvec_apic_timer_interrupt arch/x86/kernel/apic/apic.c:1049 [inline]
 sysvec_apic_timer_interrupt+0x44/0x90 arch/x86/kernel/apic/apic.c:1049
 asm_sysvec_apic_timer_interrupt+0x1f/0x30 arch/x86/include/asm/idtentry.h:702
RIP: 0033:0x7f958b3796eb
Code: 59 fe ff ff 66 2e 0f 1f 84 00 00 00 00 00 90 c4 41 01 ef ff 89 f8 09 f0 c1 e0 14 3d 00 00 00 f8 0f 87 29 03 00 00 c5 fe 6f 07 <c5> fd 74 0e c5 85 74 d0 c5 ed df c9 c5 fd d7 c9 ff c1 74 61 90 f3
RSP: 002b:00007ffe45e1bfc8 EFLAGS: 00000287
RAX: 00000000ef700000 RBX: 00007ffe45e1c637 RCX: 0000000000000073
RDX: 0000000000000000 RSI: 00007ffe45e1c637 RDI: 000055efec4e0ee5
RBP: 00007ffe45e1c63d R08: 00007ffe45e1c63d R09: 00007ffe45e1c0a0
R10: 00007f958b397fe0 R11: 00007f958b3988e0 R12: 000055efec4f3da0
R13: 000055efec4f37a0 R14: 0000000000000030 R15: 00007ffe45e1c0a8
 </TASK>

The buggy address belongs to the variable:
 .str+0x1c/0x20

The buggy address belongs to the physical page:
page: refcount:1 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x6705
flags: 0x4000(reserved|zone=0)
raw: 0000000000004000 ffffea000019c148 ffffea000019c148 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:
 ffffffff86705a00: 05 f9 f9 f9 f9 f9 f9 f9 00 00 00 00 00 02 f9 f9
 ffffffff86705a80: f9 f9 f9 f9 00 00 00 00 00 00 00 00 f9 f9 f9 f9
>ffffffff86705b00: 00 00 00 00 06 f9 f9 f9 00 04 f9 f9 00 00 00 00
                                        ^
 ffffffff86705b80: 00 f9 f9 f9 00 07 f9 f9 00 02 f9 f9 00 00 00 00
 ffffffff86705c00: 00 03 f9 f9 f9 f9 f9 f9 00 00 00 00 00 00 00 00
==================================================================
------------[ cut here ]------------
UBSAN: array-index-out-of-bounds in drivers/input/tablet/aiptek.c:763:30
index 1280 is out of range for type 'const int[34]'
CPU: 0 UID: 101 PID: 148 Comm: dhcpcd Tainted: G    B              syzkaller #0 24d49bbd58fde8b05052ac524e35fadc70590708
Tainted: [B]=BAD_PAGE
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 07/24/2026
Call Trace:
 <TASK>
 __dump_stack+0x21/0x30 lib/dump_stack.c:94
 dump_stack_lvl+0x140/0x1c0 lib/dump_stack.c:120
 dump_stack+0x19/0x20 lib/dump_stack.c:129
 ubsan_epilogue+0xe/0x40 lib/ubsan.c:231
 __ubsan_handle_out_of_bounds+0xe8/0xf0 lib/ubsan.c:429
 aiptek_irq+0x1f3c/0x2a00 drivers/input/tablet/aiptek.c:763
 __usb_hcd_giveback_urb+0x36e/0x530 drivers/usb/core/hcd.c:1648
 usb_hcd_giveback_urb+0x12b/0x400 drivers/usb/core/hcd.c:1732
 dummy_timer+0xa3f/0x4900 drivers/usb/gadget/udc/dummy_hcd.c:2003
 __run_hrtimer kernel/time/hrtimer.c:1757 [inline]
 __hrtimer_run_queues+0x3ae/0x8e0 kernel/time/hrtimer.c:1821
 hrtimer_run_softirq+0x159/0x560 kernel/time/hrtimer.c:1838
 handle_softirqs+0x1aa/0x620 kernel/softirq.c:621
 __do_softirq kernel/softirq.c:659 [inline]
 invoke_softirq kernel/softirq.c:476 [inline]
 __irq_exit_rcu+0x47/0xb0 kernel/softirq.c:708
 irq_exit_rcu+0xd/0x30 kernel/softirq.c:720
 instr_sysvec_apic_timer_interrupt arch/x86/kernel/apic/apic.c:1049 [inline]
 sysvec_apic_timer_interrupt+0x44/0x90 arch/x86/kernel/apic/apic.c:1049
 asm_sysvec_apic_timer_interrupt+0x1f/0x30 arch/x86/include/asm/idtentry.h:702
RIP: 0033:0x7f958b3796eb
Code: 59 fe ff ff 66 2e 0f 1f 84 00 00 00 00 00 90 c4 41 01 ef ff 89 f8 09 f0 c1 e0 14 3d 00 00 00 f8 0f 87 29 03 00 00 c5 fe 6f 07 <c5> fd 74 0e c5 85 74 d0 c5 ed df c9 c5 fd d7 c9 ff c1 74 61 90 f3
RSP: 002b:00007ffe45e1bfc8 EFLAGS: 00000287
RAX: 00000000ef700000 RBX: 00007ffe45e1c637 RCX: 0000000000000073
RDX: 0000000000000000 RSI: 00007ffe45e1c637 RDI: 000055efec4e0ee5
RBP: 00007ffe45e1c63d R08: 00007ffe45e1c63d R09: 00007ffe45e1c0a0
R10: 00007f958b397fe0 R11: 00007f958b3988e0 R12: 000055efec4f3da0
R13: 000055efec4f37a0 R14: 0000000000000030 R15: 00007ffe45e1c0a8
 </TASK>
---[ end trace ]---
aiptek 1-1:0.0: aiptek_irq - usb_submit_urb failed with result -19