================================================================================
UBSAN: array-index-out-of-bounds in drivers/input/tablet/aiptek.c:741:31
index 259 is out of range for type 'const int[34]'
CPU: 0 PID: 3468 Comm: syz.0.1201 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:1674
usb_hcd_giveback_urb+0x11d/0x3f0 drivers/usb/core/hcd.c:1751
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 09 8a 60 00 4d 8b 2e 4d 85 ed 0f 85 cd 00 00 00 4c 89 e7 e8 65 e2 6a 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:ffffc9000281fa48 EFLAGS: 00000282
RAX: 0000000080000001 RBX: ffff8881314d0b38 RCX: 0000000000000000
RDX: 0000000000000001 RSI: ffffffff856380e0 RDI: 00000000ffffffff
RBP: ffffc9000281fa90 R08: ffffffff8661c407 R09: 1ffffffff0cc3880
R10: dffffc0000000000 R11: fffffbfff0cc3881 R12: ffff8881f70378c0
R13: 0000000000000000 R14: ffff8881f7038408 R15: ffff8881314d0000
context_switch kernel/sched/core.c:5181 [inline]
__schedule+0xbd7/0x14a0 kernel/sched/core.c:6538
schedule+0x11e/0x1e0 kernel/sched/core.c:6621
freezable_schedule include/linux/freezer.h:197 [inline]
do_nanosleep+0x19f/0x630 kernel/time/hrtimer.c:2048
hrtimer_nanosleep+0x1b6/0x3d0 kernel/time/hrtimer.c:2101
common_nsleep+0x8f/0xb0 kernel/time/posix-timers.c:1268
__do_sys_clock_nanosleep kernel/time/posix-timers.c:1309 [inline]
__se_sys_clock_nanosleep+0x30b/0x3a0 kernel/time/posix-timers.c:1286
__x64_sys_clock_nanosleep+0x9b/0xb0 kernel/time/posix-timers.c:1286
x64_sys_call+0x824/0x9a0 arch/x86/include/generated/asm/syscalls_64.h:231
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: 0033:0x7ff1ec1ae68e
Code: 08 0f 85 a5 a8 ff ff 49 89 fb 48 89 f0 48 89 d7 48 89 ce 4c 89 c2 4d 89 ca 4c 8b 44 24 08 4c 8b 4c 24 10 4c 89 5c 24 08 0f 05 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 80 00 00 00 00 48 83 ec 08
RSP: 002b:00007ffdd457c218 EFLAGS: 00000246 ORIG_RAX: 00000000000000e6
RAX: ffffffffffffffda RBX: 000055556f3d0500 RCX: 00007ff1ec1ae68e
RDX: 00007ffdd457c270 RSI: 0000000000000000 RDI: 0000000000000000
RBP: 00007ff1ec468da0 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 000000000002321c
R13: 00007ff1ec46718c R14: 0000000000022696 R15: 00007ff1ec467180
================================================================================
==================================================================
BUG: KASAN: global-out-of-bounds in aiptek_irq+0x2063/0x29b0 drivers/input/tablet/aiptek.c:741
Read of size 4 at addr ffffffff857edcac by task syz.0.1201/3468
CPU: 0 PID: 3468 Comm: syz.0.1201 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+0x2063/0x29b0 drivers/input/tablet/aiptek.c:741
__usb_hcd_giveback_urb+0x32f/0x4f0 drivers/usb/core/hcd.c:1674
usb_hcd_giveback_urb+0x11d/0x3f0 drivers/usb/core/hcd.c:1751
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 09 8a 60 00 4d 8b 2e 4d 85 ed 0f 85 cd 00 00 00 4c 89 e7 e8 65 e2 6a 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:ffffc9000281fa48 EFLAGS: 00000282
RAX: 0000000080000001 RBX: ffff8881314d0b38 RCX: 0000000000000000
RDX: 0000000000000001 RSI: ffffffff856380e0 RDI: 00000000ffffffff
RBP: ffffc9000281fa90 R08: ffffffff8661c407 R09: 1ffffffff0cc3880
R10: dffffc0000000000 R11: fffffbfff0cc3881 R12: ffff8881f70378c0
R13: 0000000000000000 R14: ffff8881f7038408 R15: ffff8881314d0000
context_switch kernel/sched/core.c:5181 [inline]
__schedule+0xbd7/0x14a0 kernel/sched/core.c:6538
schedule+0x11e/0x1e0 kernel/sched/core.c:6621
freezable_schedule include/linux/freezer.h:197 [inline]
do_nanosleep+0x19f/0x630 kernel/time/hrtimer.c:2048
hrtimer_nanosleep+0x1b6/0x3d0 kernel/time/hrtimer.c:2101
common_nsleep+0x8f/0xb0 kernel/time/posix-timers.c:1268
__do_sys_clock_nanosleep kernel/time/posix-timers.c:1309 [inline]
__se_sys_clock_nanosleep+0x30b/0x3a0 kernel/time/posix-timers.c:1286
__x64_sys_clock_nanosleep+0x9b/0xb0 kernel/time/posix-timers.c:1286
x64_sys_call+0x824/0x9a0 arch/x86/include/generated/asm/syscalls_64.h:231
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: 0033:0x7ff1ec1ae68e
Code: 08 0f 85 a5 a8 ff ff 49 89 fb 48 89 f0 48 89 d7 48 89 ce 4c 89 c2 4d 89 ca 4c 8b 44 24 08 4c 8b 4c 24 10 4c 89 5c 24 08 0f 05 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 80 00 00 00 00 48 83 ec 08
RSP: 002b:00007ffdd457c218 EFLAGS: 00000246 ORIG_RAX: 00000000000000e6
RAX: ffffffffffffffda RBX: 000055556f3d0500 RCX: 00007ff1ec1ae68e
RDX: 00007ffdd457c270 RSI: 0000000000000000 RDI: 0000000000000000
RBP: 00007ff1ec468da0 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 000000000002321c
R13: 00007ff1ec46718c R14: 0000000000022696 R15: 00007ff1ec467180
The buggy address belongs to the variable:
.str.24+0xc/0x20
Memory state around the buggy address:
ffffffff857edb80: 00 f9 f9 f9 f9 f9 f9 f9 00 02 f9 f9 00 00 00 00
ffffffff857edc00: 00 03 f9 f9 f9 f9 f9 f9 05 f9 f9 f9 07 f9 f9 f9
>ffffffff857edc80: 00 05 f9 f9 04 f9 f9 f9 00 f9 f9 f9 07 f9 f9 f9
^
ffffffff857edd00: 06 f9 f9 f9 07 f9 f9 f9 00 00 00 00 00 00 00 00
ffffffff857edd80: f9 f9 f9 f9 00 00 f9 f9 00 01 f9 f9 00 01 f9 f9
==================================================================
================================================================================
UBSAN: array-index-out-of-bounds in drivers/input/tablet/aiptek.c:763:30
index 260 is out of range for type 'const int[34]'
CPU: 0 PID: 3468 Comm: syz.0.1201 Tainted: G B 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:1674
usb_hcd_giveback_urb+0x11d/0x3f0 drivers/usb/core/hcd.c:1751
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 09 8a 60 00 4d 8b 2e 4d 85 ed 0f 85 cd 00 00 00 4c 89 e7 e8 65 e2 6a 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:ffffc9000281fa48 EFLAGS: 00000282
RAX: 0000000080000001 RBX: ffff8881314d0b38 RCX: 0000000000000000
RDX: 0000000000000001 RSI: ffffffff856380e0 RDI: 00000000ffffffff
RBP: ffffc9000281fa90 R08: ffffffff8661c407 R09: 1ffffffff0cc3880
R10: dffffc0000000000 R11: fffffbfff0cc3881 R12: ffff8881f70378c0
R13: 0000000000000000 R14: ffff8881f7038408 R15: ffff8881314d0000
context_switch kernel/sched/core.c:5181 [inline]
__schedule+0xbd7/0x14a0 kernel/sched/core.c:6538
schedule+0x11e/0x1e0 kernel/sched/core.c:6621
freezable_schedule include/linux/freezer.h:197 [inline]
do_nanosleep+0x19f/0x630 kernel/time/hrtimer.c:2048
hrtimer_nanosleep+0x1b6/0x3d0 kernel/time/hrtimer.c:2101
common_nsleep+0x8f/0xb0 kernel/time/posix-timers.c:1268
__do_sys_clock_nanosleep kernel/time/posix-timers.c:1309 [inline]
__se_sys_clock_nanosleep+0x30b/0x3a0 kernel/time/posix-timers.c:1286
__x64_sys_clock_nanosleep+0x9b/0xb0 kernel/time/posix-timers.c:1286
x64_sys_call+0x824/0x9a0 arch/x86/include/generated/asm/syscalls_64.h:231
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: 0033:0x7ff1ec1ae68e
Code: 08 0f 85 a5 a8 ff ff 49 89 fb 48 89 f0 48 89 d7 48 89 ce 4c 89 c2 4d 89 ca 4c 8b 44 24 08 4c 8b 4c 24 10 4c 89 5c 24 08 0f 05 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 80 00 00 00 00 48 83 ec 08
RSP: 002b:00007ffdd457c218 EFLAGS: 00000246 ORIG_RAX: 00000000000000e6
RAX: ffffffffffffffda RBX: 000055556f3d0500 RCX: 00007ff1ec1ae68e
RDX: 00007ffdd457c270 RSI: 0000000000000000 RDI: 0000000000000000
RBP: 00007ff1ec468da0 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 000000000002321c
R13: 00007ff1ec46718c R14: 0000000000022696 R15: 00007ff1ec467180
================================================================================
aiptek 4-1:0.0: 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 09 8a 60 00 call 0x608a17
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 65 e2 6a 03 call 0x36ae287
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