================================================================================
UBSAN: array-index-out-of-bounds in drivers/input/tablet/aiptek.c:741:31
index 47874 is out of range for type 'const int[34]'
CPU: 0 PID: 0 Comm: swapper/0 Not tainted syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 07/16/2026
Call Trace:
__dump_stack+0x21/0x24 lib/dump_stack.c:77
dump_stack_lvl+0x1a7/0x208 lib/dump_stack.c:118
dump_stack+0x15/0x1c lib/dump_stack.c:135
ubsan_epilogue+0xe/0x40 lib/ubsan.c:148
__ubsan_handle_out_of_bounds+0xdf/0xf0 lib/ubsan.c:347
aiptek_irq+0x1fa2/0x2860 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:1746
dummy_timer+0xa34/0x31d0 drivers/usb/gadget/udc/dummy_hcd.c:1986
call_timer_fn+0x38/0x290 kernel/time/timer.c:1450
expire_timers kernel/time/timer.c:1495 [inline]
__run_timers+0x637/0x9a0 kernel/time/timer.c:1789
run_timer_softirq+0x6a/0xf0 kernel/time/timer.c:1802
__do_softirq+0x255/0x563 kernel/softirq.c:309
asm_call_irq_on_stack+0xf/0x20
__run_on_irqstack arch/x86/include/asm/irq_stack.h:26 [inline]
run_on_irqstack_cond arch/x86/include/asm/irq_stack.h:77 [inline]
do_softirq_own_stack+0x60/0x80 arch/x86/kernel/irq_64.c:77
invoke_softirq kernel/softirq.c:405 [inline]
__irq_exit_rcu+0x128/0x150 kernel/softirq.c:435
irq_exit_rcu+0x9/0x10 kernel/softirq.c:447
sysvec_apic_timer_interrupt+0xbf/0xe0 arch/x86/kernel/apic/apic.c:1106
asm_sysvec_apic_timer_interrupt+0x12/0x20 arch/x86/include/asm/idtentry.h:635
RIP: 0010:default_idle+0x12/0x20 arch/x86/kernel/process.c:718
Code: 49 bd 00 00 00 00 00 fc ff df e9 68 ff ff ff e8 74 f8 fa ff 00 00 cc cc 55 48 89 e5 0f 1f 44 00 00 0f 00 2d 80 47 63 00 fb f4 <5d> c3 66 2e 0f 1f 84 00 00 00 00 00 66 90 55 48 89 e5 41 57 41 56
RSP: 0018:ffffffff86407d78 EFLAGS: 00000242
RAX: ffff8881f7000000 RBX: ffffffff8641c100 RCX: 00000000000147f6
RDX: 0000000000000001 RSI: ffffffff85406200 RDI: ffffffff854061c0
RBP: ffffffff86407d78 R08: ffff8881f70573d3 R09: 1ffff1103ee0ae7a
R10: dffffc0000000000 R11: ffffed103ee0ae7b R12: 0000000000000000
R13: 1ffffffff0c83820 R14: dffffc0000000000 R15: dffffc0000000000
arch_cpu_idle+0xa/0x10 arch/x86/kernel/process.c:709
default_idle_call+0x71/0x1d0 kernel/sched/idle.c:114
cpuidle_idle_call kernel/sched/idle.c:204 [inline]
do_idle+0x368/0x620 kernel/sched/idle.c:328
cpu_startup_entry+0x18/0x20 kernel/sched/idle.c:425
rest_init+0xe8/0xf0 init/main.c:728
arch_call_rest_init+0xe/0x10 init/main.c:853
start_kernel+0x431/0x49f init/main.c:1055
x86_64_start_reservations+0x2a/0x2c arch/x86/kernel/head64.c:519
x86_64_start_kernel+0x60/0x63 arch/x86/kernel/head64.c:500
secondary_startup_64_no_verify+0xad/0xbb
================================================================================
==================================================================
BUG: KASAN: global-out-of-bounds in aiptek_irq+0x1fc0/0x2860 drivers/input/tablet/aiptek.c:741
Read of size 4 at addr ffffffff855dc528 by task swapper/0/0
CPU: 0 PID: 0 Comm: swapper/0 Not tainted syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 07/16/2026
Call Trace:
__dump_stack+0x21/0x24 lib/dump_stack.c:77
dump_stack_lvl+0x1a7/0x208 lib/dump_stack.c:118
print_address_description+0x7f/0x2c0 mm/kasan/report.c:248
__kasan_report mm/kasan/report.c:435 [inline]
kasan_report+0x100/0x140 mm/kasan/report.c:452
__asan_report_load4_noabort+0x14/0x20 mm/kasan/report_generic.c:308
aiptek_irq+0x1fc0/0x2860 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:1746
dummy_timer+0xa34/0x31d0 drivers/usb/gadget/udc/dummy_hcd.c:1986
call_timer_fn+0x38/0x290 kernel/time/timer.c:1450
expire_timers kernel/time/timer.c:1495 [inline]
__run_timers+0x637/0x9a0 kernel/time/timer.c:1789
run_timer_softirq+0x6a/0xf0 kernel/time/timer.c:1802
__do_softirq+0x255/0x563 kernel/softirq.c:309
asm_call_irq_on_stack+0xf/0x20
__run_on_irqstack arch/x86/include/asm/irq_stack.h:26 [inline]
run_on_irqstack_cond arch/x86/include/asm/irq_stack.h:77 [inline]
do_softirq_own_stack+0x60/0x80 arch/x86/kernel/irq_64.c:77
invoke_softirq kernel/softirq.c:405 [inline]
__irq_exit_rcu+0x128/0x150 kernel/softirq.c:435
irq_exit_rcu+0x9/0x10 kernel/softirq.c:447
sysvec_apic_timer_interrupt+0xbf/0xe0 arch/x86/kernel/apic/apic.c:1106
asm_sysvec_apic_timer_interrupt+0x12/0x20 arch/x86/include/asm/idtentry.h:635
RIP: 0010:default_idle+0x12/0x20 arch/x86/kernel/process.c:718
Code: 49 bd 00 00 00 00 00 fc ff df e9 68 ff ff ff e8 74 f8 fa ff 00 00 cc cc 55 48 89 e5 0f 1f 44 00 00 0f 00 2d 80 47 63 00 fb f4 <5d> c3 66 2e 0f 1f 84 00 00 00 00 00 66 90 55 48 89 e5 41 57 41 56
RSP: 0018:ffffffff86407d78 EFLAGS: 00000242
RAX: ffff8881f7000000 RBX: ffffffff8641c100 RCX: 00000000000147f6
RDX: 0000000000000001 RSI: ffffffff85406200 RDI: ffffffff854061c0
RBP: ffffffff86407d78 R08: ffff8881f70573d3 R09: 1ffff1103ee0ae7a
R10: dffffc0000000000 R11: ffffed103ee0ae7b R12: 0000000000000000
R13: 1ffffffff0c83820 R14: dffffc0000000000 R15: dffffc0000000000
arch_cpu_idle+0xa/0x10 arch/x86/kernel/process.c:709
default_idle_call+0x71/0x1d0 kernel/sched/idle.c:114
cpuidle_idle_call kernel/sched/idle.c:204 [inline]
do_idle+0x368/0x620 kernel/sched/idle.c:328
cpu_startup_entry+0x18/0x20 kernel/sched/idle.c:425
rest_init+0xe8/0xf0 init/main.c:728
arch_call_rest_init+0xe/0x10 init/main.c:853
start_kernel+0x431/0x49f init/main.c:1055
x86_64_start_reservations+0x2a/0x2c arch/x86/kernel/head64.c:519
x86_64_start_kernel+0x60/0x63 arch/x86/kernel/head64.c:500
secondary_startup_64_no_verify+0xad/0xbb
The buggy address belongs to the variable:
v4l2_dv_timings_presets+0x4668/0x48e0
Memory state around the buggy address:
ffffffff855dc400: f9 f9 f9 f9 f9 f9 f9 f9 f9 f9 f9 f9 f9 f9 f9 f9
ffffffff855dc480: f9 f9 f9 f9 f9 f9 f9 f9 f9 f9 f9 f9 f9 f9 f9 f9
>ffffffff855dc500: f9 f9 f9 f9 f9 f9 f9 f9 f9 f9 f9 f9 f9 f9 f9 f9
^
ffffffff855dc580: f9 f9 f9 f9 f9 f9 f9 f9 f9 f9 f9 f9 f9 f9 f9 f9
ffffffff855dc600: f9 f9 f9 f9 f9 f9 f9 f9 f9 f9 f9 f9 f9 f9 f9 f9
==================================================================
================================================================================
UBSAN: array-index-out-of-bounds in drivers/input/tablet/aiptek.c:763:30
index 47875 is out of range for type 'const int[34]'
CPU: 0 PID: 0 Comm: swapper/0 Tainted: G B syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 07/16/2026
Call Trace:
__dump_stack+0x21/0x24 lib/dump_stack.c:77
dump_stack_lvl+0x1a7/0x208 lib/dump_stack.c:118
dump_stack+0x15/0x1c lib/dump_stack.c:135
ubsan_epilogue+0xe/0x40 lib/ubsan.c:148
__ubsan_handle_out_of_bounds+0xdf/0xf0 lib/ubsan.c:347
aiptek_irq+0x1e71/0x2860 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:1746
dummy_timer+0xa34/0x31d0 drivers/usb/gadget/udc/dummy_hcd.c:1986
call_timer_fn+0x38/0x290 kernel/time/timer.c:1450
expire_timers kernel/time/timer.c:1495 [inline]
__run_timers+0x637/0x9a0 kernel/time/timer.c:1789
run_timer_softirq+0x6a/0xf0 kernel/time/timer.c:1802
__do_softirq+0x255/0x563 kernel/softirq.c:309
asm_call_irq_on_stack+0xf/0x20
__run_on_irqstack arch/x86/include/asm/irq_stack.h:26 [inline]
run_on_irqstack_cond arch/x86/include/asm/irq_stack.h:77 [inline]
do_softirq_own_stack+0x60/0x80 arch/x86/kernel/irq_64.c:77
invoke_softirq kernel/softirq.c:405 [inline]
__irq_exit_rcu+0x128/0x150 kernel/softirq.c:435
irq_exit_rcu+0x9/0x10 kernel/softirq.c:447
sysvec_apic_timer_interrupt+0xbf/0xe0 arch/x86/kernel/apic/apic.c:1106
asm_sysvec_apic_timer_interrupt+0x12/0x20 arch/x86/include/asm/idtentry.h:635
RIP: 0010:default_idle+0x12/0x20 arch/x86/kernel/process.c:718
Code: 49 bd 00 00 00 00 00 fc ff df e9 68 ff ff ff e8 74 f8 fa ff 00 00 cc cc 55 48 89 e5 0f 1f 44 00 00 0f 00 2d 80 47 63 00 fb f4 <5d> c3 66 2e 0f 1f 84 00 00 00 00 00 66 90 55 48 89 e5 41 57 41 56
RSP: 0018:ffffffff86407d78 EFLAGS: 00000242
RAX: ffff8881f7000000 RBX: ffffffff8641c100 RCX: 00000000000147f6
RDX: 0000000000000001 RSI: ffffffff85406200 RDI: ffffffff854061c0
RBP: ffffffff86407d78 R08: ffff8881f70573d3 R09: 1ffff1103ee0ae7a
R10: dffffc0000000000 R11: ffffed103ee0ae7b R12: 0000000000000000
R13: 1ffffffff0c83820 R14: dffffc0000000000 R15: dffffc0000000000
arch_cpu_idle+0xa/0x10 arch/x86/kernel/process.c:709
default_idle_call+0x71/0x1d0 kernel/sched/idle.c:114
cpuidle_idle_call kernel/sched/idle.c:204 [inline]
do_idle+0x368/0x620 kernel/sched/idle.c:328
cpu_startup_entry+0x18/0x20 kernel/sched/idle.c:425
rest_init+0xe8/0xf0 init/main.c:728
arch_call_rest_init+0xe/0x10 init/main.c:853
start_kernel+0x431/0x49f init/main.c:1055
x86_64_start_reservations+0x2a/0x2c arch/x86/kernel/head64.c:519
x86_64_start_kernel+0x60/0x63 arch/x86/kernel/head64.c:500
secondary_startup_64_no_verify+0xad/0xbb
================================================================================
----------------
Code disassembly (best guess):
0: 49 bd 00 00 00 00 00 movabs $0xdffffc0000000000,%r13
7: fc ff df
a: e9 68 ff ff ff jmp 0xffffff77
f: e8 74 f8 fa ff call 0xfffaf888
14: 00 00 add %al,(%rax)
16: cc int3
17: cc int3
18: 55 push %rbp
19: 48 89 e5 mov %rsp,%rbp
1c: 0f 1f 44 00 00 nopl 0x0(%rax,%rax,1)
21: 0f 00 2d 80 47 63 00 verw 0x634780(%rip) # 0x6347a8
28: fb sti
29: f4 hlt
* 2a: 5d pop %rbp <-- trapping instruction
2b: c3 ret
2c: 66 2e 0f 1f 84 00 00 cs nopw 0x0(%rax,%rax,1)
33: 00 00 00
36: 66 90 xchg %ax,%ax
38: 55 push %rbp
39: 48 89 e5 mov %rsp,%rbp
3c: 41 57 push %r15
3e: 41 56 push %r14