================================================================================
UBSAN: array-index-out-of-bounds in drivers/input/tablet/aiptek.c:741:31
index 547 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+0x21/0x30 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+0x208d/0x29b0 drivers/input/tablet/aiptek.c:741
__usb_hcd_giveback_urb+0x333/0x4f0 drivers/usb/core/hcd.c:1674
usb_hcd_giveback_urb+0x119/0x410 drivers/usb/core/hcd.c:1751
dummy_timer+0x8be/0x30e0 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+0x650/0x9e0 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:default_idle+0xf/0x20 arch/x86/kernel/process.c:730
Code: ff 4c 89 f7 e8 a2 a1 f4 fc e9 3d ff ff ff 00 00 cc cc 00 00 cc cc 00 00 cc cc 00 55 48 89 e5 66 90 0f 00 2d e3 a1 50 00 fb f4 <5d> c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 44 00 00 55 48 89 e5 41
RSP: 0018:ffffc90000157db8 EFLAGS: 00000242
RAX: 000000000001e07a RBX: ffff888100308000 RCX: 000000000001e07a
RDX: 0000000000000001 RSI: ffffffff8563ad60 RDI: ffffffff8563ad20
RBP: ffffc90000157db8 R08: ffff8881f7138c73 R09: 1ffff1103ee2718e
R10: dffffc0000000000 R11: ffffed103ee2718f R12: 0000000000000000
R13: 1ffff11020061000 R14: dffffc0000000000 R15: dffffc0000000000
arch_cpu_idle+0xa/0x10 arch/x86/kernel/process.c:721
default_idle_call+0x71/0x1d0 kernel/sched/idle.c:112
cpuidle_idle_call kernel/sched/idle.c:202 [inline]
do_idle+0x368/0x620 kernel/sched/idle.c:326
cpu_startup_entry+0x18/0x20 kernel/sched/idle.c:424
start_secondary+0x2e6/0x3a0 arch/x86/kernel/smpboot.c:281
secondary_startup_64_no_verify+0xb1/0xbb
================================================================================
==================================================================
BUG: KASAN: global-out-of-bounds in aiptek_irq+0x20ab/0x29b0 drivers/input/tablet/aiptek.c:741
Read of size 4 at addr ffffffff857f35ec 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+0x21/0x30 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+0xf1/0x140 mm/kasan/report.c:444
__asan_report_load4_noabort+0x14/0x20 mm/kasan/report_generic.c:308
aiptek_irq+0x20ab/0x29b0 drivers/input/tablet/aiptek.c:741
__usb_hcd_giveback_urb+0x333/0x4f0 drivers/usb/core/hcd.c:1674
usb_hcd_giveback_urb+0x119/0x410 drivers/usb/core/hcd.c:1751
dummy_timer+0x8be/0x30e0 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+0x650/0x9e0 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:default_idle+0xf/0x20 arch/x86/kernel/process.c:730
Code: ff 4c 89 f7 e8 a2 a1 f4 fc e9 3d ff ff ff 00 00 cc cc 00 00 cc cc 00 00 cc cc 00 55 48 89 e5 66 90 0f 00 2d e3 a1 50 00 fb f4 <5d> c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 44 00 00 55 48 89 e5 41
RSP: 0018:ffffc90000157db8 EFLAGS: 00000242
RAX: 000000000001e07a RBX: ffff888100308000 RCX: 000000000001e07a
RDX: 0000000000000001 RSI: ffffffff8563ad60 RDI: ffffffff8563ad20
RBP: ffffc90000157db8 R08: ffff8881f7138c73 R09: 1ffff1103ee2718e
R10: dffffc0000000000 R11: ffffed103ee2718f R12: 0000000000000000
R13: 1ffff11020061000 R14: dffffc0000000000 R15: dffffc0000000000
arch_cpu_idle+0xa/0x10 arch/x86/kernel/process.c:721
default_idle_call+0x71/0x1d0 kernel/sched/idle.c:112
cpuidle_idle_call kernel/sched/idle.c:202 [inline]
do_idle+0x368/0x620 kernel/sched/idle.c:326
cpu_startup_entry+0x18/0x20 kernel/sched/idle.c:424
start_secondary+0x2e6/0x3a0 arch/x86/kernel/smpboot.c:281
secondary_startup_64_no_verify+0xb1/0xbb
The buggy address belongs to the variable:
.str.60+0xc/0x20
Memory state around the buggy address:
ffffffff857f3480: f9 f9 f9 f9 06 f9 f9 f9 00 01 f9 f9 04 f9 f9 f9
ffffffff857f3500: 00 f9 f9 f9 06 f9 f9 f9 07 f9 f9 f9 06 f9 f9 f9
>ffffffff857f3580: 00 04 f9 f9 05 f9 f9 f9 00 03 f9 f9 00 03 f9 f9
^
ffffffff857f3600: 00 00 00 00 03 f9 f9 f9 f9 f9 f9 f9 00 00 00 00
ffffffff857f3680: 03 f9 f9 f9 f9 f9 f9 f9 00 00 00 00 01 f9 f9 f9
==================================================================
================================================================================
UBSAN: array-index-out-of-bounds in drivers/input/tablet/aiptek.c:763:30
index 548 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+0x21/0x30 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+0x1f6d/0x29b0 drivers/input/tablet/aiptek.c:763
__usb_hcd_giveback_urb+0x333/0x4f0 drivers/usb/core/hcd.c:1674
usb_hcd_giveback_urb+0x119/0x410 drivers/usb/core/hcd.c:1751
dummy_timer+0x8be/0x30e0 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+0x650/0x9e0 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:default_idle+0xf/0x20 arch/x86/kernel/process.c:730
Code: ff 4c 89 f7 e8 a2 a1 f4 fc e9 3d ff ff ff 00 00 cc cc 00 00 cc cc 00 00 cc cc 00 55 48 89 e5 66 90 0f 00 2d e3 a1 50 00 fb f4 <5d> c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 44 00 00 55 48 89 e5 41
RSP: 0018:ffffc90000157db8 EFLAGS: 00000242
RAX: 000000000001e07a RBX: ffff888100308000 RCX: 000000000001e07a
RDX: 0000000000000001 RSI: ffffffff8563ad60 RDI: ffffffff8563ad20
RBP: ffffc90000157db8 R08: ffff8881f7138c73 R09: 1ffff1103ee2718e
R10: dffffc0000000000 R11: ffffed103ee2718f R12: 0000000000000000
R13: 1ffff11020061000 R14: dffffc0000000000 R15: dffffc0000000000
arch_cpu_idle+0xa/0x10 arch/x86/kernel/process.c:721
default_idle_call+0x71/0x1d0 kernel/sched/idle.c:112
cpuidle_idle_call kernel/sched/idle.c:202 [inline]
do_idle+0x368/0x620 kernel/sched/idle.c:326
cpu_startup_entry+0x18/0x20 kernel/sched/idle.c:424
start_secondary+0x2e6/0x3a0 arch/x86/kernel/smpboot.c:281
secondary_startup_64_no_verify+0xb1/0xbb
================================================================================
----------------
Code disassembly (best guess):
0: ff 4c 89 f7 decl -0x9(%rcx,%rcx,4)
4: e8 a2 a1 f4 fc call 0xfcf4a1ab
9: e9 3d ff ff ff jmp 0xffffff4b
e: 00 00 add %al,(%rax)
10: cc int3
11: cc int3
12: 00 00 add %al,(%rax)
14: cc int3
15: cc int3
16: 00 00 add %al,(%rax)
18: cc int3
19: cc int3
1a: 00 55 48 add %dl,0x48(%rbp)
1d: 89 e5 mov %esp,%ebp
1f: 66 90 xchg %ax,%ax
21: 0f 00 2d e3 a1 50 00 verw 0x50a1e3(%rip) # 0x50a20b
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: 0f 1f 44 00 00 nopl 0x0(%rax,%rax,1)
3b: 55 push %rbp
3c: 48 89 e5 mov %rsp,%rbp
3f: 41 rex.B