================================================================================
UBSAN: array-index-out-of-bounds in drivers/input/tablet/aiptek.c:724:31
index 119 is out of range for type 'const int[34]'
CPU: 1 PID: 368 Comm: udevd 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: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+0x210e/0x29b0 drivers/input/tablet/aiptek.c:724
__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:__sanitizer_cov_trace_pc+0x1/0x60 kernel/kcov.c:209
Code: fb e8 23 00 00 00 48 8b 3d bc 7c 21 06 48 89 de e8 f4 d1 44 00 5b 5d c3 00 90 90 90 90 90 90 90 90 90 90 90 b8 0c 67 40 a5 55 <48> 89 e5 48 8b 45 08 65 48 8b 0d 70 07 91 7e 65 8b 15 71 07 91 7e
RSP: 0000:ffffc90000a17c70 EFLAGS: 00000283
RAX: ffffffff81abc296 RBX: 1ffff11025c32065 RCX: 0000000000000000
RDX: ffff88812e163cc0 RSI: 0000000000000004 RDI: 0000000000000040
RBP: ffffc90000a17e50 R08: ffff88812e17a3cf R09: 1ffff11025c2f479
R10: dffffc0000000000 R11: ffffed1025c2f47a R12: 000056042abace50
R13: dffffc0000000000 R14: ffff88812e164230 R15: 0000000000000004
do_user_addr_fault+0x900/0x1030 arch/x86/mm/fault.c:1321
handle_page_fault arch/x86/mm/fault.c:1464 [inline]
exc_page_fault+0x51/0xb0 arch/x86/mm/fault.c:1517
asm_exc_page_fault+0x27/0x30 arch/x86/include/asm/idtentry.h:608
RIP: 0033:0x7fb460eb8b3a
Code: 83 f9 1f 0f 86 1b 01 00 00 48 8b 45 70 66 49 0f 6e e7 49 8d 54 1d 00 66 48 0f 6e c0 66 0f 6c c4 4c 39 78 18 0f 85 bc 01 00 00 <0f> 11 42 10 48 89 55 70 48 89 50 18 48 81 fb ff 03 00 00 77 04 48
RSP: 002b:00007ffc2a40bdc0 EFLAGS: 00010246
RAX: 00007fb460ff1b20 RBX: 0000000000000210 RCX: 0000000000000140
RDX: 000056042abace40 RSI: 00007fb460ff1e60 RDI: 000056042abacc30
RBP: 00007fb460ff1ac0 R08: 00007fb460ff1ac0 R09: 0000000000000210
R10: 0000000000000001 R11: 0000000000000001 R12: 0000000000000200
R13: 000056042abacc30 R14: 0000000000000350 R15: 00007fb460ff1b20
================================================================================
==================================================================
BUG: KASAN: global-out-of-bounds in aiptek_irq+0x212c/0x29b0 drivers/input/tablet/aiptek.c:724
Read of size 4 at addr ffffffff85e656dc by task udevd/368
CPU: 1 PID: 368 Comm: udevd 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: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+0x212c/0x29b0 drivers/input/tablet/aiptek.c:724
__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:__sanitizer_cov_trace_pc+0x1/0x60 kernel/kcov.c:209
Code: fb e8 23 00 00 00 48 8b 3d bc 7c 21 06 48 89 de e8 f4 d1 44 00 5b 5d c3 00 90 90 90 90 90 90 90 90 90 90 90 b8 0c 67 40 a5 55 <48> 89 e5 48 8b 45 08 65 48 8b 0d 70 07 91 7e 65 8b 15 71 07 91 7e
RSP: 0000:ffffc90000a17c70 EFLAGS: 00000283
RAX: ffffffff81abc296 RBX: 1ffff11025c32065 RCX: 0000000000000000
RDX: ffff88812e163cc0 RSI: 0000000000000004 RDI: 0000000000000040
RBP: ffffc90000a17e50 R08: ffff88812e17a3cf R09: 1ffff11025c2f479
R10: dffffc0000000000 R11: ffffed1025c2f47a R12: 000056042abace50
R13: dffffc0000000000 R14: ffff88812e164230 R15: 0000000000000004
do_user_addr_fault+0x900/0x1030 arch/x86/mm/fault.c:1321
handle_page_fault arch/x86/mm/fault.c:1464 [inline]
exc_page_fault+0x51/0xb0 arch/x86/mm/fault.c:1517
asm_exc_page_fault+0x27/0x30 arch/x86/include/asm/idtentry.h:608
RIP: 0033:0x7fb460eb8b3a
Code: 83 f9 1f 0f 86 1b 01 00 00 48 8b 45 70 66 49 0f 6e e7 49 8d 54 1d 00 66 48 0f 6e c0 66 0f 6c c4 4c 39 78 18 0f 85 bc 01 00 00 <0f> 11 42 10 48 89 55 70 48 89 50 18 48 81 fb ff 03 00 00 77 04 48
RSP: 002b:00007ffc2a40bdc0 EFLAGS: 00010246
RAX: 00007fb460ff1b20 RBX: 0000000000000210 RCX: 0000000000000140
RDX: 000056042abace40 RSI: 00007fb460ff1e60 RDI: 000056042abacc30
RBP: 00007fb460ff1ac0 R08: 00007fb460ff1ac0 R09: 0000000000000210
R10: 0000000000000001 R11: 0000000000000001 R12: 0000000000000200
R13: 000056042abacc30 R14: 0000000000000350 R15: 00007fb460ff1b20
The buggy address belongs to the variable:
.str.9+0x3c/0x60
The buggy address belongs to the physical page:
page:ffffea0000179940 refcount:1 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x5e65
flags: 0x1000(reserved|zone=0)
raw: 0000000000001000 ffffea0000179948 ffffea0000179948 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:
ffffffff85e65580: 00 f9 f9 f9 f9 f9 f9 f9 00 00 00 00 00 00 00 00
ffffffff85e65600: 00 00 00 04 f9 f9 f9 f9 00 00 00 00 06 f9 f9 f9
>ffffffff85e65680: f9 f9 f9 f9 00 00 00 00 00 03 f9 f9 f9 f9 f9 f9
^
ffffffff85e65700: 00 00 00 00 00 f9 f9 f9 f9 f9 f9 f9 00 02 f9 f9
ffffffff85e65780: 00 00 00 00 00 03 f9 f9 f9 f9 f9 f9 00 00 00 00
==================================================================
aiptek 9-1:0.0: aiptek_irq - usb_submit_urb failed with result -19
----------------
Code disassembly (best guess):
0: fb sti
1: e8 23 00 00 00 call 0x29
6: 48 8b 3d bc 7c 21 06 mov 0x6217cbc(%rip),%rdi # 0x6217cc9
d: 48 89 de mov %rbx,%rsi
10: e8 f4 d1 44 00 call 0x44d209
15: 5b pop %rbx
16: 5d pop %rbp
17: c3 ret
18: 00 90 90 90 90 90 add %dl,-0x6f6f6f70(%rax)
1e: 90 nop
1f: 90 nop
20: 90 nop
21: 90 nop
22: 90 nop
23: 90 nop
24: b8 0c 67 40 a5 mov $0xa540670c,%eax
29: 55 push %rbp
* 2a: 48 89 e5 mov %rsp,%rbp <-- trapping instruction
2d: 48 8b 45 08 mov 0x8(%rbp),%rax
31: 65 48 8b 0d 70 07 91 mov %gs:0x7e910770(%rip),%rcx # 0x7e9107a9
38: 7e
39: 65 8b 15 71 07 91 7e mov %gs:0x7e910771(%rip),%edx # 0x7e9107b1