================================================================================
UBSAN: array-index-out-of-bounds in drivers/input/tablet/aiptek.c:741:31
index 2815 is out of range for type 'const int[34]'
CPU: 1 PID: 566 Comm: syz.5.63 Not tainted syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 05/09/2026
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: 0033:0x7f164f271525
Code: 0f 84 0f 01 00 00 48 83 c0 01 48 83 f8 04 75 ec 31 f6 80 7c 24 0e 00 74 70 40 88 74 24 0e 8b 7c 24 08 48 89 de e8 7b f2 fd ff <84> c0 75 5b 80 7c 24 0f 00 75 0d 80 3d 51 0b 3a 00 00 0f 85 a3 01
RSP: 002b:00007ffd1874f8b0 EFLAGS: 00000246
RAX: 0000000000000001 RBX: ffffffff81ad5bde RCX: ffffffff81ad5bde
RDX: 0000000000001bde RSI: ffffffff81ad5bde RDI: 0000000000000005
RBP: 0000000000000000 R08: 00007f164f600000 R09: 00007f164f602000
R10: 0000000081ad5be2 R11: 0000000000000005 R12: 00007f164f616038
R13: 0000000000020a72 R14: ffffffff81ad5cbc R15: 00007f1650145720
 </TASK>
================================================================================
==================================================================
BUG: KASAN: global-out-of-bounds in aiptek_irq+0x2063/0x29b0 drivers/input/tablet/aiptek.c:741
Read of size 4 at addr ffffffff85e67f3c by task syz.5.63/566

CPU: 1 PID: 566 Comm: syz.5.63 Not tainted syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 05/09/2026
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: 0033:0x7f164f271525
Code: 0f 84 0f 01 00 00 48 83 c0 01 48 83 f8 04 75 ec 31 f6 80 7c 24 0e 00 74 70 40 88 74 24 0e 8b 7c 24 08 48 89 de e8 7b f2 fd ff <84> c0 75 5b 80 7c 24 0f 00 75 0d 80 3d 51 0b 3a 00 00 0f 85 a3 01
RSP: 002b:00007ffd1874f8b0 EFLAGS: 00000246
RAX: 0000000000000001 RBX: ffffffff81ad5bde RCX: ffffffff81ad5bde
RDX: 0000000000001bde RSI: ffffffff81ad5bde RDI: 0000000000000005
RBP: 0000000000000000 R08: 00007f164f600000 R09: 00007f164f602000
R10: 0000000081ad5be2 R11: 0000000000000005 R12: 00007f164f616038
R13: 0000000000020a72 R14: ffffffff81ad5cbc R15: 00007f1650145720
 </TASK>

The buggy address belongs to the variable:
 .str.41+0x3c/0x40

The buggy address belongs to the physical page:
page:ffffea00001799c0 refcount:1 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x5e67
flags: 0x1000(reserved|zone=0)
raw: 0000000000001000 ffffea00001799c8 ffffea00001799c8 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:
 ffffffff85e67e00: f9 f9 f9 f9 00 00 00 00 00 00 00 f9 f9 f9 f9 f9
 ffffffff85e67e80: 00 00 00 00 00 00 00 00 04 f9 f9 f9 f9 f9 f9 f9
>ffffffff85e67f00: 00 00 01 f9 f9 f9 f9 f9 00 00 05 f9 f9 f9 f9 f9
                                        ^
 ffffffff85e67f80: 00 00 00 00 06 f9 f9 f9 f9 f9 f9 f9 00 02 f9 f9
 ffffffff85e68000: 00 00 00 00 06 f9 f9 f9 f9 f9 f9 f9 00 00 04 f9
==================================================================
================================================================================
UBSAN: array-index-out-of-bounds in drivers/input/tablet/aiptek.c:763:30
index 2816 is out of range for type 'const int[34]'
CPU: 1 PID: 566 Comm: syz.5.63 Tainted: G    B              syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 05/09/2026
Call Trace:
 <TASK>
 __dump_stack+0x21/0x24 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: 0033:0x7f164f271525
Code: 0f 84 0f 01 00 00 48 83 c0 01 48 83 f8 04 75 ec 31 f6 80 7c 24 0e 00 74 70 40 88 74 24 0e 8b 7c 24 08 48 89 de e8 7b f2 fd ff <84> c0 75 5b 80 7c 24 0f 00 75 0d 80 3d 51 0b 3a 00 00 0f 85 a3 01
RSP: 002b:00007ffd1874f8b0 EFLAGS: 00000246
RAX: 0000000000000001 RBX: ffffffff81ad5bde RCX: ffffffff81ad5bde
RDX: 0000000000001bde RSI: ffffffff81ad5bde RDI: 0000000000000005
RBP: 0000000000000000 R08: 00007f164f600000 R09: 00007f164f602000
R10: 0000000081ad5be2 R11: 0000000000000005 R12: 00007f164f616038
R13: 0000000000020a72 R14: ffffffff81ad5cbc R15: 00007f1650145720
 </TASK>
================================================================================
aiptek 2-1:0.0: aiptek_irq - usb_submit_urb failed with result -19