================================================================================
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: 24 Comm: kworker/1:0 Tainted: G W syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 11/06/2026
Workqueue: usb_hub_wq hub_event
Call Trace:
__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:1673
usb_hcd_giveback_urb+0x11f/0x3e0 drivers/usb/core/hcd.c:1756
dummy_timer+0xa25/0x3270 drivers/usb/gadget/udc/dummy_hcd.c:2004
__run_hrtimer kernel/time/hrtimer.c:1689 [inline]
__hrtimer_run_queues+0x398/0x8a0 kernel/time/hrtimer.c:1753
hrtimer_run_softirq+0x19b/0x260 kernel/time/hrtimer.c:1770
handle_softirqs+0x1dd/0x5f0 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+0xa9/0xc0 arch/x86/kernel/apic/apic.c:1118
asm_sysvec_apic_timer_interrupt+0x1b/0x20 arch/x86/include/asm/idtentry.h:691
RIP: 0010:finish_task_switch+0x173/0x7c0 kernel/sched/core.c:5302
Code: 80 3c 2b 00 74 08 4c 89 f7 e8 d9 a5 69 00 4d 8b 2e 4d 85 ed 0f 85 cd 00 00 00 4c 89 e7 e8 25 bb b4 03 fb 49 8d 9f 48 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:ffffc900001974a8 EFLAGS: 00000282
RAX: 0000000080000001 RBX: ffff88810033f088 RCX: 0000000000000000
RDX: 0000000000000001 RSI: ffffffff85ca76c0 RDI: 00000000ffffffff
RBP: ffffc900001974f0 R08: ffff88810f7dbcc7 R09: 1ffff11021efb798
R10: dffffc0000000000 R11: ffffed1021efb799 R12: ffff8881f6f37f00
R13: 0000000000000000 R14: ffff8881f6f38a60 R15: ffff88810033e540
context_switch kernel/sched/core.c:5428 [inline]
__schedule+0xcbb/0x1700 kernel/sched/core.c:6762
preempt_schedule_common+0x9b/0xf0 kernel/sched/core.c:6931
preempt_schedule+0xbc/0xd0 kernel/sched/core.c:6955
preempt_schedule_thunk+0x16/0x18 arch/x86/entry/thunk_64.S:34
__raw_spin_unlock_irq include/linux/spinlock_api_smp.h:160 [inline]
_raw_spin_unlock_irq+0x60/0x70 kernel/locking/spinlock.c:202
spin_unlock_irq include/linux/spinlock.h:401 [inline]
rh_call_control drivers/usb/core/hcd.c:737 [inline]
rh_urb_enqueue drivers/usb/core/hcd.c:846 [inline]
usb_hcd_submit_urb+0x11f8/0x1800 drivers/usb/core/hcd.c:1554
usb_submit_urb+0x1091/0x1740 drivers/usb/core/urb.c:596
usb_start_wait_urb+0x123/0x380 drivers/usb/core/message.c:61
usb_internal_control_msg drivers/usb/core/message.c:116 [inline]
usb_control_msg+0x243/0x3f0 drivers/usb/core/message.c:166
get_port_status drivers/usb/core/hub.c:609 [inline]
hub_ext_port_status+0xf2/0x6a0 drivers/usb/core/hub.c:626
usb_hub_port_status drivers/usb/core/hub.c:648 [inline]
port_event drivers/usb/core/hub.c:5788 [inline]
hub_event+0x767/0x4310 drivers/usb/core/hub.c:5980
process_one_work+0x717/0xc30 kernel/workqueue.c:2302
process_scheduled_works kernel/workqueue.c:2365 [inline]
worker_thread+0xcc2/0x11d0 kernel/workqueue.c:2451
kthread+0x281/0x320 kernel/kthread.c:386
ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:295
================================================================================
==================================================================
BUG: KASAN: global-out-of-bounds in aiptek_irq+0x2063/0x29b0 drivers/input/tablet/aiptek.c:741
Read of size 4 at addr ffffffff85e66c24 by task kworker/1:0/24
CPU: 1 PID: 24 Comm: kworker/1:0 Tainted: G W syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 11/06/2026
Workqueue: usb_hub_wq hub_event
Call Trace:
__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:1673
usb_hcd_giveback_urb+0x11f/0x3e0 drivers/usb/core/hcd.c:1756
dummy_timer+0xa25/0x3270 drivers/usb/gadget/udc/dummy_hcd.c:2004
__run_hrtimer kernel/time/hrtimer.c:1689 [inline]
__hrtimer_run_queues+0x398/0x8a0 kernel/time/hrtimer.c:1753
hrtimer_run_softirq+0x19b/0x260 kernel/time/hrtimer.c:1770
handle_softirqs+0x1dd/0x5f0 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+0xa9/0xc0 arch/x86/kernel/apic/apic.c:1118
asm_sysvec_apic_timer_interrupt+0x1b/0x20 arch/x86/include/asm/idtentry.h:691
RIP: 0010:finish_task_switch+0x173/0x7c0 kernel/sched/core.c:5302
Code: 80 3c 2b 00 74 08 4c 89 f7 e8 d9 a5 69 00 4d 8b 2e 4d 85 ed 0f 85 cd 00 00 00 4c 89 e7 e8 25 bb b4 03 fb 49 8d 9f 48 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:ffffc900001974a8 EFLAGS: 00000282
RAX: 0000000080000001 RBX: ffff88810033f088 RCX: 0000000000000000
RDX: 0000000000000001 RSI: ffffffff85ca76c0 RDI: 00000000ffffffff
RBP: ffffc900001974f0 R08: ffff88810f7dbcc7 R09: 1ffff11021efb798
R10: dffffc0000000000 R11: ffffed1021efb799 R12: ffff8881f6f37f00
R13: 0000000000000000 R14: ffff8881f6f38a60 R15: ffff88810033e540
context_switch kernel/sched/core.c:5428 [inline]
__schedule+0xcbb/0x1700 kernel/sched/core.c:6762
preempt_schedule_common+0x9b/0xf0 kernel/sched/core.c:6931
preempt_schedule+0xbc/0xd0 kernel/sched/core.c:6955
preempt_schedule_thunk+0x16/0x18 arch/x86/entry/thunk_64.S:34
__raw_spin_unlock_irq include/linux/spinlock_api_smp.h:160 [inline]
_raw_spin_unlock_irq+0x60/0x70 kernel/locking/spinlock.c:202
spin_unlock_irq include/linux/spinlock.h:401 [inline]
rh_call_control drivers/usb/core/hcd.c:737 [inline]
rh_urb_enqueue drivers/usb/core/hcd.c:846 [inline]
usb_hcd_submit_urb+0x11f8/0x1800 drivers/usb/core/hcd.c:1554
usb_submit_urb+0x1091/0x1740 drivers/usb/core/urb.c:596
usb_start_wait_urb+0x123/0x380 drivers/usb/core/message.c:61
usb_internal_control_msg drivers/usb/core/message.c:116 [inline]
usb_control_msg+0x243/0x3f0 drivers/usb/core/message.c:166
get_port_status drivers/usb/core/hub.c:609 [inline]
hub_ext_port_status+0xf2/0x6a0 drivers/usb/core/hub.c:626
usb_hub_port_status drivers/usb/core/hub.c:648 [inline]
port_event drivers/usb/core/hub.c:5788 [inline]
hub_event+0x767/0x4310 drivers/usb/core/hub.c:5980
process_one_work+0x717/0xc30 kernel/workqueue.c:2302
process_scheduled_works kernel/workqueue.c:2365 [inline]
worker_thread+0xcc2/0x11d0 kernel/workqueue.c:2451
kthread+0x281/0x320 kernel/kthread.c:386
ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:295
The buggy address belongs to the variable:
aiptek_ids+0x144/0x160
The buggy address belongs to the physical page:
page:ffffea0000179980 refcount:1 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x5e66
flags: 0x1000(reserved|zone=0)
raw: 0000000000001000 ffffea0000179988 ffffea0000179988 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:
ffffffff85e66b00: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
ffffffff85e66b80: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
>ffffffff85e66c00: f9 f9 f9 f9 f9 f9 f9 f9 00 00 00 00 00 f9 f9 f9
^
ffffffff85e66c80: f9 f9 f9 f9 05 f9 f9 f9 07 f9 f9 f9 00 05 f9 f9
ffffffff85e66d00: 04 f9 f9 f9 00 f9 f9 f9 07 f9 f9 f9 06 f9 f9 f9
==================================================================
================================================================================
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: 24 Comm: kworker/1:0 Tainted: G B W syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 11/06/2026
Workqueue: usb_hub_wq hub_event
Call Trace:
__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:1673
usb_hcd_giveback_urb+0x11f/0x3e0 drivers/usb/core/hcd.c:1756
dummy_timer+0xa25/0x3270 drivers/usb/gadget/udc/dummy_hcd.c:2004
__run_hrtimer kernel/time/hrtimer.c:1689 [inline]
__hrtimer_run_queues+0x398/0x8a0 kernel/time/hrtimer.c:1753
hrtimer_run_softirq+0x19b/0x260 kernel/time/hrtimer.c:1770
handle_softirqs+0x1dd/0x5f0 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+0xa9/0xc0 arch/x86/kernel/apic/apic.c:1118
asm_sysvec_apic_timer_interrupt+0x1b/0x20 arch/x86/include/asm/idtentry.h:691
RIP: 0010:finish_task_switch+0x173/0x7c0 kernel/sched/core.c:5302
Code: 80 3c 2b 00 74 08 4c 89 f7 e8 d9 a5 69 00 4d 8b 2e 4d 85 ed 0f 85 cd 00 00 00 4c 89 e7 e8 25 bb b4 03 fb 49 8d 9f 48 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:ffffc900001974a8 EFLAGS: 00000282
RAX: 0000000080000001 RBX: ffff88810033f088 RCX: 0000000000000000
RDX: 0000000000000001 RSI: ffffffff85ca76c0 RDI: 00000000ffffffff
RBP: ffffc900001974f0 R08: ffff88810f7dbcc7 R09: 1ffff11021efb798
R10: dffffc0000000000 R11: ffffed1021efb799 R12: ffff8881f6f37f00
R13: 0000000000000000 R14: ffff8881f6f38a60 R15: ffff88810033e540
context_switch kernel/sched/core.c:5428 [inline]
__schedule+0xcbb/0x1700 kernel/sched/core.c:6762
preempt_schedule_common+0x9b/0xf0 kernel/sched/core.c:6931
preempt_schedule+0xbc/0xd0 kernel/sched/core.c:6955
preempt_schedule_thunk+0x16/0x18 arch/x86/entry/thunk_64.S:34
__raw_spin_unlock_irq include/linux/spinlock_api_smp.h:160 [inline]
_raw_spin_unlock_irq+0x60/0x70 kernel/locking/spinlock.c:202
spin_unlock_irq include/linux/spinlock.h:401 [inline]
rh_call_control drivers/usb/core/hcd.c:737 [inline]
rh_urb_enqueue drivers/usb/core/hcd.c:846 [inline]
usb_hcd_submit_urb+0x11f8/0x1800 drivers/usb/core/hcd.c:1554
usb_submit_urb+0x1091/0x1740 drivers/usb/core/urb.c:596
usb_start_wait_urb+0x123/0x380 drivers/usb/core/message.c:61
usb_internal_control_msg drivers/usb/core/message.c:116 [inline]
usb_control_msg+0x243/0x3f0 drivers/usb/core/message.c:166
get_port_status drivers/usb/core/hub.c:609 [inline]
hub_ext_port_status+0xf2/0x6a0 drivers/usb/core/hub.c:626
usb_hub_port_status drivers/usb/core/hub.c:648 [inline]
port_event drivers/usb/core/hub.c:5788 [inline]
hub_event+0x767/0x4310 drivers/usb/core/hub.c:5980
process_one_work+0x717/0xc30 kernel/workqueue.c:2302
process_scheduled_works kernel/workqueue.c:2365 [inline]
worker_thread+0xcc2/0x11d0 kernel/workqueue.c:2451
kthread+0x281/0x320 kernel/kthread.c:386
ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:295
================================================================================
aiptek 5-1:0.0: 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 d9 a5 69 00 call 0x69a5e7
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 25 bb b4 03 call 0x3b4bb47
22: fb sti
23: 49 8d 9f 48 0b 00 00 lea 0xb48(%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