================================================================================
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: 0 Comm: swapper/1 Not tainted syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 07/16/2026
Call Trace:
__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:1672
usb_hcd_giveback_urb+0x11d/0x3f0 drivers/usb/core/hcd.c:1749
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+0xa9/0xc0 arch/x86/kernel/apic/apic.c:1108
asm_sysvec_apic_timer_interrupt+0x1b/0x20 arch/x86/include/asm/idtentry.h:676
RIP: 0010:finish_task_switch+0x173/0x790 kernel/sched/core.c:5050
Code: 80 3c 2b 00 74 08 4c 89 f7 e8 79 98 60 00 4d 8b 2e 4d 85 ed 0f 85 cd 00 00 00 4c 89 e7 e8 b5 47 6b 03 fb 49 8d 9f 38 0b 00 00 <48> 89 d8 48 c1 e8 03 49 bd 00 00 00 00 00 fc ff df 42 0f b6 04 28
RSP: 0018:ffffc90000157c88 EFLAGS: 00000282
RAX: 0000000080000001 RBX: ffff88810030da38 RCX: 0000000000000000
RDX: 0000000000000001 RSI: ffffffff85638320 RDI: 00000000ffffffff
RBP: ffffc90000157cd0 R08: ffff8881168b4f07 R09: 1ffff11022d169e0
R10: dffffc0000000000 R11: ffffed1022d169e1 R12: ffff8881f71378c0
R13: 0000000000000000 R14: ffff8881f7138408 R15: ffff88810030cf00
context_switch kernel/sched/core.c:5181 [inline]
__schedule+0xbd7/0x14a0 kernel/sched/core.c:6538
schedule_idle+0x4e/0x90 kernel/sched/core.c:6649
do_idle+0x5d1/0x620 kernel/sched/idle.c:355
cpu_startup_entry+0x18/0x20 kernel/sched/idle.c:424
start_secondary+0x2c8/0x380 arch/x86/kernel/smpboot.c:281
secondary_startup_64_no_verify+0xb1/0xbb
================================================================================
==================================================================
BUG: KASAN: global-out-of-bounds in aiptek_irq+0x2063/0x29b0 drivers/input/tablet/aiptek.c:741
Read of size 4 at addr ffffffff85826c90 by task swapper/1/0
CPU: 1 PID: 0 Comm: swapper/1 Not tainted syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 07/16/2026
Call Trace:
__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:1672
usb_hcd_giveback_urb+0x11d/0x3f0 drivers/usb/core/hcd.c:1749
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+0xa9/0xc0 arch/x86/kernel/apic/apic.c:1108
asm_sysvec_apic_timer_interrupt+0x1b/0x20 arch/x86/include/asm/idtentry.h:676
RIP: 0010:finish_task_switch+0x173/0x790 kernel/sched/core.c:5050
Code: 80 3c 2b 00 74 08 4c 89 f7 e8 79 98 60 00 4d 8b 2e 4d 85 ed 0f 85 cd 00 00 00 4c 89 e7 e8 b5 47 6b 03 fb 49 8d 9f 38 0b 00 00 <48> 89 d8 48 c1 e8 03 49 bd 00 00 00 00 00 fc ff df 42 0f b6 04 28
RSP: 0018:ffffc90000157c88 EFLAGS: 00000282
RAX: 0000000080000001 RBX: ffff88810030da38 RCX: 0000000000000000
RDX: 0000000000000001 RSI: ffffffff85638320 RDI: 00000000ffffffff
RBP: ffffc90000157cd0 R08: ffff8881168b4f07 R09: 1ffff11022d169e0
R10: dffffc0000000000 R11: ffffed1022d169e1 R12: ffff8881f71378c0
R13: 0000000000000000 R14: ffff8881f7138408 R15: ffff88810030cf00
context_switch kernel/sched/core.c:5181 [inline]
__schedule+0xbd7/0x14a0 kernel/sched/core.c:6538
schedule_idle+0x4e/0x90 kernel/sched/core.c:6649
do_idle+0x5d1/0x620 kernel/sched/idle.c:355
cpu_startup_entry+0x18/0x20 kernel/sched/idle.c:424
start_secondary+0x2c8/0x380 arch/x86/kernel/smpboot.c:281
secondary_startup_64_no_verify+0xb1/0xbb
The buggy address belongs to the variable:
.str.48+0x50/0x60
Memory state around the buggy address:
ffffffff85826b80: 00 00 00 00 f9 f9 f9 f9 f9 f9 f9 f9 f9 f9 f9 f9
ffffffff85826c00: f9 f9 f9 f9 00 f9 f9 f9 00 00 00 00 03 f9 f9 f9
>ffffffff85826c80: f9 f9 f9 f9 00 03 f9 f9 00 04 f9 f9 00 04 f9 f9
^
ffffffff85826d00: 00 05 f9 f9 00 00 00 04 f9 f9 f9 f9 00 00 f9 f9
ffffffff85826d80: 00 00 00 00 02 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 58389 is out of range for type 'const int[34]'
CPU: 1 PID: 0 Comm: swapper/1 Tainted: G B syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 07/16/2026
Call Trace:
__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:1672
usb_hcd_giveback_urb+0x11d/0x3f0 drivers/usb/core/hcd.c:1749
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+0xa9/0xc0 arch/x86/kernel/apic/apic.c:1108
asm_sysvec_apic_timer_interrupt+0x1b/0x20 arch/x86/include/asm/idtentry.h:676
RIP: 0010:finish_task_switch+0x173/0x790 kernel/sched/core.c:5050
Code: 80 3c 2b 00 74 08 4c 89 f7 e8 79 98 60 00 4d 8b 2e 4d 85 ed 0f 85 cd 00 00 00 4c 89 e7 e8 b5 47 6b 03 fb 49 8d 9f 38 0b 00 00 <48> 89 d8 48 c1 e8 03 49 bd 00 00 00 00 00 fc ff df 42 0f b6 04 28
RSP: 0018:ffffc90000157c88 EFLAGS: 00000282
RAX: 0000000080000001 RBX: ffff88810030da38 RCX: 0000000000000000
RDX: 0000000000000001 RSI: ffffffff85638320 RDI: 00000000ffffffff
RBP: ffffc90000157cd0 R08: ffff8881168b4f07 R09: 1ffff11022d169e0
R10: dffffc0000000000 R11: ffffed1022d169e1 R12: ffff8881f71378c0
R13: 0000000000000000 R14: ffff8881f7138408 R15: ffff88810030cf00
context_switch kernel/sched/core.c:5181 [inline]
__schedule+0xbd7/0x14a0 kernel/sched/core.c:6538
schedule_idle+0x4e/0x90 kernel/sched/core.c:6649
do_idle+0x5d1/0x620 kernel/sched/idle.c:355
cpu_startup_entry+0x18/0x20 kernel/sched/idle.c:424
start_secondary+0x2c8/0x380 arch/x86/kernel/smpboot.c:281
secondary_startup_64_no_verify+0xb1/0xbb
================================================================================
----------------
Code disassembly (best guess):
0: 80 3c 2b 00 cmpb $0x0,(%rbx,%rbp,1)
4: 74 08 je 0xe
6: 4c 89 f7 mov %r14,%rdi
9: e8 79 98 60 00 call 0x609887
e: 4d 8b 2e mov (%r14),%r13
11: 4d 85 ed test %r13,%r13
14: 0f 85 cd 00 00 00 jne 0xe7
1a: 4c 89 e7 mov %r12,%rdi
1d: e8 b5 47 6b 03 call 0x36b47d7
22: fb sti
23: 49 8d 9f 38 0b 00 00 lea 0xb38(%r15),%rbx
* 2a: 48 89 d8 mov %rbx,%rax <-- trapping instruction
2d: 48 c1 e8 03 shr $0x3,%rax
31: 49 bd 00 00 00 00 00 movabs $0xdffffc0000000000,%r13
38: fc ff df
3b: 42 0f b6 04 28 movzbl (%rax,%r13,1),%eax