================================================================================
UBSAN: array-index-out-of-bounds in drivers/input/tablet/aiptek.c:741:31
index 47138 is out of range for type 'const int[34]'
CPU: 1 PID: 0 Comm: swapper/1 Not tainted syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 05/09/2026
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+0x208d/0x29b0 drivers/input/tablet/aiptek.c:741
__usb_hcd_giveback_urb+0x364/0x520 drivers/usb/core/hcd.c:1675
usb_hcd_giveback_urb+0x11c/0x410 drivers/usb/core/hcd.c:1758
dummy_timer+0x88c/0x3070 drivers/usb/gadget/udc/dummy_hcd.c:2004
__run_hrtimer kernel/time/hrtimer.c:1685 [inline]
__hrtimer_run_queues+0x3bb/0x8e0 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:default_idle+0xf/0x20 arch/x86/kernel/process.c:742
Code: 37 e5 b4 fc e9 3d ff ff ff 00 00 90 90 90 90 90 90 90 90 90 90 90 b8 0c 67 40 a5 55 48 89 e5 66 90 0f 00 2d 23 f3 63 00 fb f4 <5d> c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 44 00 00 90 90 90 90 90
RSP: 0018:ffffc90000147dd8 EFLAGS: 00000257
RAX: ffff8881f6f00000 RBX: ffff888100333cc0 RCX: a0064e664c2eb300
RDX: 0000000000000001 RSI: ffffffff85ca8cc0 RDI: ffffffff85ca8c80
RBP: ffffc90000147dd8 R08: ffff8881f6f348b3 R09: 1ffff1103ede6916
R10: 0000000000000000 R11: ffffffff85023e50 R12: dffffc0000000000
R13: 0000000000000001 R14: ffff888100333cc0 R15: dffffc0000000000
arch_cpu_idle+0x1c/0x20 arch/x86/kernel/process.c:733
default_idle_call+0x71/0x1d0 kernel/sched/idle.c:109
cpuidle_idle_call kernel/sched/idle.c:199 [inline]
do_idle+0x354/0x640 kernel/sched/idle.c:323
cpu_startup_entry+0x43/0x60 kernel/sched/idle.c:422
start_secondary+0x119/0x120 arch/x86/kernel/smpboot.c:281
secondary_startup_64_no_verify+0xce/0xdb
================================================================================
==================================================================
BUG: KASAN: global-out-of-bounds in aiptek_irq+0x20ab/0x29b0 drivers/input/tablet/aiptek.c:741
Read of size 4 at addr ffffffff85e98648 by task swapper/1/0
CPU: 1 PID: 0 Comm: swapper/1 Not tainted syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 05/09/2026
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+0x20ab/0x29b0 drivers/input/tablet/aiptek.c:741
__usb_hcd_giveback_urb+0x364/0x520 drivers/usb/core/hcd.c:1675
usb_hcd_giveback_urb+0x11c/0x410 drivers/usb/core/hcd.c:1758
dummy_timer+0x88c/0x3070 drivers/usb/gadget/udc/dummy_hcd.c:2004
__run_hrtimer kernel/time/hrtimer.c:1685 [inline]
__hrtimer_run_queues+0x3bb/0x8e0 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:default_idle+0xf/0x20 arch/x86/kernel/process.c:742
Code: 37 e5 b4 fc e9 3d ff ff ff 00 00 90 90 90 90 90 90 90 90 90 90 90 b8 0c 67 40 a5 55 48 89 e5 66 90 0f 00 2d 23 f3 63 00 fb f4 <5d> c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 44 00 00 90 90 90 90 90
RSP: 0018:ffffc90000147dd8 EFLAGS: 00000257
RAX: ffff8881f6f00000 RBX: ffff888100333cc0 RCX: a0064e664c2eb300
RDX: 0000000000000001 RSI: ffffffff85ca8cc0 RDI: ffffffff85ca8c80
RBP: ffffc90000147dd8 R08: ffff8881f6f348b3 R09: 1ffff1103ede6916
R10: 0000000000000000 R11: ffffffff85023e50 R12: dffffc0000000000
R13: 0000000000000001 R14: ffff888100333cc0 R15: dffffc0000000000
arch_cpu_idle+0x1c/0x20 arch/x86/kernel/process.c:733
default_idle_call+0x71/0x1d0 kernel/sched/idle.c:109
cpuidle_idle_call kernel/sched/idle.c:199 [inline]
do_idle+0x354/0x640 kernel/sched/idle.c:323
cpu_startup_entry+0x43/0x60 kernel/sched/idle.c:422
start_secondary+0x119/0x120 arch/x86/kernel/smpboot.c:281
secondary_startup_64_no_verify+0xce/0xdb
The buggy address belongs to the variable:
.str.494+0x28/0x40
The buggy address belongs to the physical page:
page:ffffea000017a600 refcount:1 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x5e98
flags: 0x1000(reserved|zone=0)
raw: 0000000000001000 ffffea000017a608 ffffea000017a608 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:
ffffffff85e98500: f9 f9 f9 f9 00 00 00 07 f9 f9 f9 f9 00 00 00 03
ffffffff85e98580: f9 f9 f9 f9 00 00 f9 f9 00 06 f9 f9 00 00 00 f9
>ffffffff85e98600: f9 f9 f9 f9 00 00 00 04 f9 f9 f9 f9 00 06 f9 f9
^
ffffffff85e98680: 00 07 f9 f9 00 03 f9 f9 00 04 f9 f9 00 06 f9 f9
ffffffff85e98700: 00 07 f9 f9 00 00 f9 f9 00 00 f9 f9 00 00 00 04
==================================================================
================================================================================
UBSAN: array-index-out-of-bounds in drivers/input/tablet/aiptek.c:763:30
index 47139 is out of range for type 'const int[34]'
CPU: 1 PID: 0 Comm: swapper/1 Tainted: G B syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 05/09/2026
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+0x1f6d/0x29b0 drivers/input/tablet/aiptek.c:763
__usb_hcd_giveback_urb+0x364/0x520 drivers/usb/core/hcd.c:1675
usb_hcd_giveback_urb+0x11c/0x410 drivers/usb/core/hcd.c:1758
dummy_timer+0x88c/0x3070 drivers/usb/gadget/udc/dummy_hcd.c:2004
__run_hrtimer kernel/time/hrtimer.c:1685 [inline]
__hrtimer_run_queues+0x3bb/0x8e0 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:default_idle+0xf/0x20 arch/x86/kernel/process.c:742
Code: 37 e5 b4 fc e9 3d ff ff ff 00 00 90 90 90 90 90 90 90 90 90 90 90 b8 0c 67 40 a5 55 48 89 e5 66 90 0f 00 2d 23 f3 63 00 fb f4 <5d> c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 44 00 00 90 90 90 90 90
RSP: 0018:ffffc90000147dd8 EFLAGS: 00000257
RAX: ffff8881f6f00000 RBX: ffff888100333cc0 RCX: a0064e664c2eb300
RDX: 0000000000000001 RSI: ffffffff85ca8cc0 RDI: ffffffff85ca8c80
RBP: ffffc90000147dd8 R08: ffff8881f6f348b3 R09: 1ffff1103ede6916
R10: 0000000000000000 R11: ffffffff85023e50 R12: dffffc0000000000
R13: 0000000000000001 R14: ffff888100333cc0 R15: dffffc0000000000
arch_cpu_idle+0x1c/0x20 arch/x86/kernel/process.c:733
default_idle_call+0x71/0x1d0 kernel/sched/idle.c:109
cpuidle_idle_call kernel/sched/idle.c:199 [inline]
do_idle+0x354/0x640 kernel/sched/idle.c:323
cpu_startup_entry+0x43/0x60 kernel/sched/idle.c:422
start_secondary+0x119/0x120 arch/x86/kernel/smpboot.c:281
secondary_startup_64_no_verify+0xce/0xdb
================================================================================
aiptek 2-1:0.0: aiptek_irq - usb_submit_urb failed with result -19
----------------
Code disassembly (best guess), 1 bytes skipped:
0: e5 b4 in $0xb4,%eax
2: fc cld
3: e9 3d ff ff ff jmp 0xffffff45
8: 00 00 add %al,(%rax)
a: 90 nop
b: 90 nop
c: 90 nop
d: 90 nop
e: 90 nop
f: 90 nop
10: 90 nop
11: 90 nop
12: 90 nop
13: 90 nop
14: 90 nop
15: b8 0c 67 40 a5 mov $0xa540670c,%eax
1a: 55 push %rbp
1b: 48 89 e5 mov %rsp,%rbp
1e: 66 90 xchg %ax,%ax
20: 0f 00 2d 23 f3 63 00 verw 0x63f323(%rip) # 0x63f34a
27: fb sti
28: f4 hlt
* 29: 5d pop %rbp <-- trapping instruction
2a: c3 ret
2b: 66 2e 0f 1f 84 00 00 cs nopw 0x0(%rax,%rax,1)
32: 00 00 00
35: 0f 1f 44 00 00 nopl 0x0(%rax,%rax,1)
3a: 90 nop
3b: 90 nop
3c: 90 nop
3d: 90 nop
3e: 90 nop