================================================================================
UBSAN: array-index-out-of-bounds in drivers/input/tablet/aiptek.c:741:31
index 265 is out of range for type 'const int[34]'
CPU: 1 PID: 3055 Comm: syz.4.974 Tainted: G W syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 05/09/2026
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 19 9a 60 00 4d 8b 2e 4d 85 ed 0f 85 cd 00 00 00 4c 89 e7 e8 f5 27 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:ffffc90000bb7628 EFLAGS: 00000282
RAX: 0000000080000001 RBX: ffff88811bb5da38 RCX: 0000000000000000
RDX: 0000000000000001 RSI: ffffffff85638360 RDI: 00000000ffffffff
RBP: ffffc90000bb7670 R08: ffff88811d24cf07 R09: 1ffff11023a499e0
R10: dffffc0000000000 R11: ffffed1023a499e1 R12: ffff8881f71378c0
R13: 0000000000000000 R14: ffff8881f7138408 R15: ffff88811bb5cf00
context_switch kernel/sched/core.c:5181 [inline]
__schedule+0xbd7/0x14a0 kernel/sched/core.c:6538
preempt_schedule_common+0x9b/0xf0 kernel/sched/core.c:6714
preempt_schedule+0xbc/0xd0 kernel/sched/core.c:6739
preempt_schedule_thunk+0x16/0x18 arch/x86/entry/thunk_64.S:34
__raw_spin_unlock include/linux/spinlock_api_smp.h:152 [inline]
_raw_spin_unlock+0x60/0x70 kernel/locking/spinlock.c:186
spin_unlock include/linux/spinlock.h:404 [inline]
zap_pte_range mm/memory.c:1518 [inline]
zap_pmd_range mm/memory.c:1577 [inline]
zap_pud_range mm/memory.c:1606 [inline]
zap_p4d_range mm/memory.c:1627 [inline]
unmap_page_range+0x959/0x1e00 mm/memory.c:1648
unmap_single_vma mm/memory.c:1693 [inline]
unmap_vmas+0x26d/0x380 mm/memory.c:1725
exit_mmap+0x412/0x8b0 mm/mmap.c:3245
__mmput+0x92/0x300 kernel/fork.c:1185
mmput+0x50/0x150 kernel/fork.c:1208
exit_mm kernel/exit.c:555 [inline]
do_exit+0xacc/0x29a0 kernel/exit.c:877
do_group_exit+0x149/0x310 kernel/exit.c:1004
__do_sys_exit_group kernel/exit.c:1015 [inline]
__se_sys_exit_group kernel/exit.c:1013 [inline]
__x64_sys_exit_group+0x3f/0x40 kernel/exit.c:1013
x64_sys_call+0x832/0x9a0 arch/x86/include/generated/asm/syscalls_64.h:232
do_syscall_x64 arch/x86/entry/common.c:50 [inline]
do_syscall_64+0x4c/0xa0 arch/x86/entry/common.c:80
entry_SYSCALL_64_after_hwframe+0x66/0xd0
RIP: 0033:0x7fe664fa9e59
Code: Unable to access opcode bytes at RIP 0x7fe664fa9e2f.
RSP: 002b:00007fffbb528008 EFLAGS: 00000246 ORIG_RAX: 00000000000000e7
RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 00007fe664fa9e59
RDX: 00007fe664205000 RSI: 0000000000000000 RDI: 0000000000000000
RBP: 00007fffbb52806c R08: 0000000000000000 R09: 00000000000927c0
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000100
R13: 00000000000927c0 R14: 000000000001ec4f R15: 00007fffbb5280c0
================================================================================
================================================================================
UBSAN: array-index-out-of-bounds in drivers/input/tablet/aiptek.c:763:30
index 266 is out of range for type 'const int[34]'
CPU: 1 PID: 3055 Comm: syz.4.974 Tainted: G W syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 05/09/2026
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 19 9a 60 00 4d 8b 2e 4d 85 ed 0f 85 cd 00 00 00 4c 89 e7 e8 f5 27 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:ffffc90000bb7628 EFLAGS: 00000282
RAX: 0000000080000001 RBX: ffff88811bb5da38 RCX: 0000000000000000
RDX: 0000000000000001 RSI: ffffffff85638360 RDI: 00000000ffffffff
RBP: ffffc90000bb7670 R08: ffff88811d24cf07 R09: 1ffff11023a499e0
R10: dffffc0000000000 R11: ffffed1023a499e1 R12: ffff8881f71378c0
R13: 0000000000000000 R14: ffff8881f7138408 R15: ffff88811bb5cf00
context_switch kernel/sched/core.c:5181 [inline]
__schedule+0xbd7/0x14a0 kernel/sched/core.c:6538
preempt_schedule_common+0x9b/0xf0 kernel/sched/core.c:6714
preempt_schedule+0xbc/0xd0 kernel/sched/core.c:6739
preempt_schedule_thunk+0x16/0x18 arch/x86/entry/thunk_64.S:34
__raw_spin_unlock include/linux/spinlock_api_smp.h:152 [inline]
_raw_spin_unlock+0x60/0x70 kernel/locking/spinlock.c:186
spin_unlock include/linux/spinlock.h:404 [inline]
zap_pte_range mm/memory.c:1518 [inline]
zap_pmd_range mm/memory.c:1577 [inline]
zap_pud_range mm/memory.c:1606 [inline]
zap_p4d_range mm/memory.c:1627 [inline]
unmap_page_range+0x959/0x1e00 mm/memory.c:1648
unmap_single_vma mm/memory.c:1693 [inline]
unmap_vmas+0x26d/0x380 mm/memory.c:1725
exit_mmap+0x412/0x8b0 mm/mmap.c:3245
__mmput+0x92/0x300 kernel/fork.c:1185
mmput+0x50/0x150 kernel/fork.c:1208
exit_mm kernel/exit.c:555 [inline]
do_exit+0xacc/0x29a0 kernel/exit.c:877
do_group_exit+0x149/0x310 kernel/exit.c:1004
__do_sys_exit_group kernel/exit.c:1015 [inline]
__se_sys_exit_group kernel/exit.c:1013 [inline]
__x64_sys_exit_group+0x3f/0x40 kernel/exit.c:1013
x64_sys_call+0x832/0x9a0 arch/x86/include/generated/asm/syscalls_64.h:232
do_syscall_x64 arch/x86/entry/common.c:50 [inline]
do_syscall_64+0x4c/0xa0 arch/x86/entry/common.c:80
entry_SYSCALL_64_after_hwframe+0x66/0xd0
RIP: 0033:0x7fe664fa9e59
Code: Unable to access opcode bytes at RIP 0x7fe664fa9e2f.
RSP: 002b:00007fffbb528008 EFLAGS: 00000246 ORIG_RAX: 00000000000000e7
RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 00007fe664fa9e59
RDX: 00007fe664205000 RSI: 0000000000000000 RDI: 0000000000000000
RBP: 00007fffbb52806c R08: 0000000000000000 R09: 00000000000927c0
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000100
R13: 00000000000927c0 R14: 000000000001ec4f R15: 00007fffbb5280c0
================================================================================
==================================================================
BUG: KASAN: global-out-of-bounds in aiptek_irq+0x1f32/0x29b0 drivers/input/tablet/aiptek.c:763
Read of size 4 at addr ffffffff857ee0a8 by task syz.4.974/3055
CPU: 1 PID: 3055 Comm: syz.4.974 Tainted: G W syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 05/09/2026
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+0x1f32/0x29b0 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 19 9a 60 00 4d 8b 2e 4d 85 ed 0f 85 cd 00 00 00 4c 89 e7 e8 f5 27 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:ffffc90000bb7628 EFLAGS: 00000282
RAX: 0000000080000001 RBX: ffff88811bb5da38 RCX: 0000000000000000
RDX: 0000000000000001 RSI: ffffffff85638360 RDI: 00000000ffffffff
RBP: ffffc90000bb7670 R08: ffff88811d24cf07 R09: 1ffff11023a499e0
R10: dffffc0000000000 R11: ffffed1023a499e1 R12: ffff8881f71378c0
R13: 0000000000000000 R14: ffff8881f7138408 R15: ffff88811bb5cf00
context_switch kernel/sched/core.c:5181 [inline]
__schedule+0xbd7/0x14a0 kernel/sched/core.c:6538
preempt_schedule_common+0x9b/0xf0 kernel/sched/core.c:6714
preempt_schedule+0xbc/0xd0 kernel/sched/core.c:6739
preempt_schedule_thunk+0x16/0x18 arch/x86/entry/thunk_64.S:34
__raw_spin_unlock include/linux/spinlock_api_smp.h:152 [inline]
_raw_spin_unlock+0x60/0x70 kernel/locking/spinlock.c:186
spin_unlock include/linux/spinlock.h:404 [inline]
zap_pte_range mm/memory.c:1518 [inline]
zap_pmd_range mm/memory.c:1577 [inline]
zap_pud_range mm/memory.c:1606 [inline]
zap_p4d_range mm/memory.c:1627 [inline]
unmap_page_range+0x959/0x1e00 mm/memory.c:1648
unmap_single_vma mm/memory.c:1693 [inline]
unmap_vmas+0x26d/0x380 mm/memory.c:1725
exit_mmap+0x412/0x8b0 mm/mmap.c:3245
__mmput+0x92/0x300 kernel/fork.c:1185
mmput+0x50/0x150 kernel/fork.c:1208
exit_mm kernel/exit.c:555 [inline]
do_exit+0xacc/0x29a0 kernel/exit.c:877
do_group_exit+0x149/0x310 kernel/exit.c:1004
__do_sys_exit_group kernel/exit.c:1015 [inline]
__se_sys_exit_group kernel/exit.c:1013 [inline]
__x64_sys_exit_group+0x3f/0x40 kernel/exit.c:1013
x64_sys_call+0x832/0x9a0 arch/x86/include/generated/asm/syscalls_64.h:232
do_syscall_x64 arch/x86/entry/common.c:50 [inline]
do_syscall_64+0x4c/0xa0 arch/x86/entry/common.c:80
entry_SYSCALL_64_after_hwframe+0x66/0xd0
RIP: 0033:0x7fe664fa9e59
Code: Unable to access opcode bytes at RIP 0x7fe664fa9e2f.
RSP: 002b:00007fffbb528008 EFLAGS: 00000246 ORIG_RAX: 00000000000000e7
RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 00007fe664fa9e59
RDX: 00007fe664205000 RSI: 0000000000000000 RDI: 0000000000000000
RBP: 00007fffbb52806c R08: 0000000000000000 R09: 00000000000927c0
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000100
R13: 00000000000927c0 R14: 000000000001ec4f R15: 00007fffbb5280c0
The buggy address belongs to the variable:
.str.25+0x8/0x20
Memory state around the buggy address:
ffffffff857edf80: f9 f9 f9 f9 00 02 f9 f9 00 00 00 00 00 03 f9 f9
ffffffff857ee000: f9 f9 f9 f9 05 f9 f9 f9 07 f9 f9 f9 00 05 f9 f9
>ffffffff857ee080: 04 f9 f9 f9 00 f9 f9 f9 07 f9 f9 f9 06 f9 f9 f9
^
ffffffff857ee100: 07 f9 f9 f9 00 00 00 00 00 00 00 00 f9 f9 f9 f9
ffffffff857ee180: 00 00 f9 f9 00 01 f9 f9 00 01 f9 f9 00 00 00 00
==================================================================
aiptek 2-1:0.0: aiptek_irq - usb_submit_urb failed with result -19
----------------
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 19 9a 60 00 call 0x609a27
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 f5 27 6b 03 call 0x36b2817
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