================================================================================
UBSAN: array-index-out-of-bounds in drivers/input/tablet/aiptek.c:741:31
index 33414 is out of range for type 'const int[34]'
CPU: 0 PID: 6 Comm: kworker/0:0 Not tainted syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 05/09/2026
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: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+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:update_stack_state+0x2c2/0x490 arch/x86/kernel/unwind_frame.c:212
Code: 4c 8b 75 98 74 24 44 3b 6d bc 75 1e 48 8b 45 b0 48 39 45 c0 73 14 31 c0 48 81 c4 88 00 00 00 5b 41 5c 41 5d 41 5e 41 5f 5d c3 <4d> 85 f6 74 76 49 bd 00 00 00 00 00 fc ff df 48 8b 45 a8 42 80 3c
RSP: 0018:ffffc900000671e8 EFLAGS: 00000216
RAX: ffffc900000676a8 RBX: ffffc90000067310 RCX: ffffc90000067601
RDX: ffffc900000676d0 RSI: 1ffff9200000ce62 RDI: ffffc90000067360
RBP: ffffc90000067298 R08: ffffc900000673d0 R09: ffffc900000673c8
R10: 0000000000000002 R11: fffff5200000ce6d R12: 1ffff9200000ce69
R13: 0000000000000001 R14: 0000000000000000 R15: ffffc90000068000
unwind_next_frame+0x39e/0x660 arch/x86/kernel/unwind_frame.c:315
arch_stack_walk+0x124/0x150 arch/x86/kernel/stacktrace.c:25
stack_trace_save+0xa6/0xf0 kernel/stacktrace.c:122
kasan_save_stack mm/kasan/common.c:46 [inline]
kasan_set_track+0x4b/0x70 mm/kasan/common.c:53
kasan_save_free_info+0x2b/0x40 mm/kasan/generic.c:516
____kasan_slab_free+0x132/0x180 mm/kasan/common.c:242
__kasan_slab_free+0x11/0x20 mm/kasan/common.c:250
kasan_slab_free include/linux/kasan.h:178 [inline]
slab_free_hook mm/slub.c:1750 [inline]
slab_free_freelist_hook+0xc2/0x190 mm/slub.c:1776
slab_free mm/slub.c:3712 [inline]
__kmem_cache_free+0xb7/0x1b0 mm/slub.c:3728
kfree+0x6f/0xf0 mm/slab_common.c:990
usb_control_msg+0x2d5/0x3f0 drivers/usb/core/message.c:172
usb_get_string+0xa8/0x3d0 drivers/usb/core/message.c:901
usb_string_sub+0x7f/0x450 drivers/usb/core/message.c:940
usb_string+0x38e/0x6b0 drivers/usb/core/message.c:1045
usb_cache_string+0x80/0x130 drivers/usb/core/message.c:1087
usb_enumerate_device drivers/usb/core/hub.c:2529 [inline]
usb_new_device+0x326/0x1500 drivers/usb/core/hub.c:2654
hub_port_connect drivers/usb/core/hub.c:5594 [inline]
hub_port_connect_change drivers/usb/core/hub.c:5734 [inline]
port_event drivers/usb/core/hub.c:5898 [inline]
hub_event+0x27fb/0x4310 drivers/usb/core/hub.c:5980
process_one_work+0x717/0xc30 kernel/workqueue.c:2302
worker_thread+0xa4d/0x11d0 kernel/workqueue.c:2449
kthread+0x281/0x320 kernel/kthread.c:386
ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:295
================================================================================
================================================================================
UBSAN: array-index-out-of-bounds in drivers/input/tablet/aiptek.c:763:30
index 33415 is out of range for type 'const int[34]'
CPU: 0 PID: 6 Comm: kworker/0:0 Not tainted syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 05/09/2026
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: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+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:update_stack_state+0x2c2/0x490 arch/x86/kernel/unwind_frame.c:212
Code: 4c 8b 75 98 74 24 44 3b 6d bc 75 1e 48 8b 45 b0 48 39 45 c0 73 14 31 c0 48 81 c4 88 00 00 00 5b 41 5c 41 5d 41 5e 41 5f 5d c3 <4d> 85 f6 74 76 49 bd 00 00 00 00 00 fc ff df 48 8b 45 a8 42 80 3c
RSP: 0018:ffffc900000671e8 EFLAGS: 00000216
RAX: ffffc900000676a8 RBX: ffffc90000067310 RCX: ffffc90000067601
RDX: ffffc900000676d0 RSI: 1ffff9200000ce62 RDI: ffffc90000067360
RBP: ffffc90000067298 R08: ffffc900000673d0 R09: ffffc900000673c8
R10: 0000000000000002 R11: fffff5200000ce6d R12: 1ffff9200000ce69
R13: 0000000000000001 R14: 0000000000000000 R15: ffffc90000068000
unwind_next_frame+0x39e/0x660 arch/x86/kernel/unwind_frame.c:315
arch_stack_walk+0x124/0x150 arch/x86/kernel/stacktrace.c:25
stack_trace_save+0xa6/0xf0 kernel/stacktrace.c:122
kasan_save_stack mm/kasan/common.c:46 [inline]
kasan_set_track+0x4b/0x70 mm/kasan/common.c:53
kasan_save_free_info+0x2b/0x40 mm/kasan/generic.c:516
____kasan_slab_free+0x132/0x180 mm/kasan/common.c:242
__kasan_slab_free+0x11/0x20 mm/kasan/common.c:250
kasan_slab_free include/linux/kasan.h:178 [inline]
slab_free_hook mm/slub.c:1750 [inline]
slab_free_freelist_hook+0xc2/0x190 mm/slub.c:1776
slab_free mm/slub.c:3712 [inline]
__kmem_cache_free+0xb7/0x1b0 mm/slub.c:3728
kfree+0x6f/0xf0 mm/slab_common.c:990
usb_control_msg+0x2d5/0x3f0 drivers/usb/core/message.c:172
usb_get_string+0xa8/0x3d0 drivers/usb/core/message.c:901
usb_string_sub+0x7f/0x450 drivers/usb/core/message.c:940
usb_string+0x38e/0x6b0 drivers/usb/core/message.c:1045
usb_cache_string+0x80/0x130 drivers/usb/core/message.c:1087
usb_enumerate_device drivers/usb/core/hub.c:2529 [inline]
usb_new_device+0x326/0x1500 drivers/usb/core/hub.c:2654
hub_port_connect drivers/usb/core/hub.c:5594 [inline]
hub_port_connect_change drivers/usb/core/hub.c:5734 [inline]
port_event drivers/usb/core/hub.c:5898 [inline]
hub_event+0x27fb/0x4310 drivers/usb/core/hub.c:5980
process_one_work+0x717/0xc30 kernel/workqueue.c:2302
worker_thread+0xa4d/0x11d0 kernel/workqueue.c:2449
kthread+0x281/0x320 kernel/kthread.c:386
ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:295
================================================================================
aiptek 1-1:0.0: aiptek_irq - usb_submit_urb failed with result -19
----------------
Code disassembly (best guess):
0: 4c 8b 75 98 mov -0x68(%rbp),%r14
4: 74 24 je 0x2a
6: 44 3b 6d bc cmp -0x44(%rbp),%r13d
a: 75 1e jne 0x2a
c: 48 8b 45 b0 mov -0x50(%rbp),%rax
10: 48 39 45 c0 cmp %rax,-0x40(%rbp)
14: 73 14 jae 0x2a
16: 31 c0 xor %eax,%eax
18: 48 81 c4 88 00 00 00 add $0x88,%rsp
1f: 5b pop %rbx
20: 41 5c pop %r12
22: 41 5d pop %r13
24: 41 5e pop %r14
26: 41 5f pop %r15
28: 5d pop %rbp
29: c3 ret
* 2a: 4d 85 f6 test %r14,%r14 <-- trapping instruction
2d: 74 76 je 0xa5
2f: 49 bd 00 00 00 00 00 movabs $0xdffffc0000000000,%r13
36: fc ff df
39: 48 8b 45 a8 mov -0x58(%rbp),%rax
3d: 42 rex.X
3e: 80 .byte 0x80
3f: 3c .byte 0x3c