------------[ cut here ]------------
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: 0 UID: 0 PID: 725 Comm: syz.0.82 Not tainted syzkaller #0 471281939cd7bfdfff4c6b6074d5d68627c837ba
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 05/09/2026
Call Trace:
__dump_stack+0x21/0x30 lib/dump_stack.c:94
dump_stack_lvl+0x140/0x1c0 lib/dump_stack.c:120
dump_stack+0x19/0x20 lib/dump_stack.c:129
ubsan_epilogue+0xe/0x40 lib/ubsan.c:231
__ubsan_handle_out_of_bounds+0xe8/0xf0 lib/ubsan.c:429
aiptek_irq+0x20cb/0x2a00 drivers/input/tablet/aiptek.c:741
__usb_hcd_giveback_urb+0x375/0x540 drivers/usb/core/hcd.c:1648
usb_hcd_giveback_urb+0x11b/0x410 drivers/usb/core/hcd.c:1732
dummy_timer+0x816/0x4300 drivers/usb/gadget/udc/dummy_hcd.c:2003
__run_hrtimer kernel/time/hrtimer.c:1753 [inline]
__hrtimer_run_queues+0x3ab/0x8e0 kernel/time/hrtimer.c:1817
hrtimer_run_softirq+0x159/0x560 kernel/time/hrtimer.c:1834
handle_softirqs+0x1aa/0x630 kernel/softirq.c:621
__do_softirq kernel/softirq.c:659 [inline]
invoke_softirq kernel/softirq.c:476 [inline]
__irq_exit_rcu+0x47/0xb0 kernel/softirq.c:708
irq_exit_rcu+0xd/0x30 kernel/softirq.c:720
instr_sysvec_apic_timer_interrupt arch/x86/kernel/apic/apic.c:1049 [inline]
sysvec_apic_timer_interrupt+0x82/0x90 arch/x86/kernel/apic/apic.c:1049
asm_sysvec_apic_timer_interrupt+0x1f/0x30 arch/x86/include/asm/idtentry.h:702
RIP: 0010:io_init_req io_uring/io_uring.c:2136 [inline]
RIP: 0010:io_submit_sqe io_uring/io_uring.c:2220 [inline]
RIP: 0010:io_submit_sqes+0x6aa/0x1b30 io_uring/io_uring.c:2373
Code: 00 00 e8 89 7a e7 fe 49 bc 00 00 00 00 00 fc ff df 4c 89 e8 48 c1 e8 03 42 0f b6 04 20 84 c0 0f 85 31 0b 00 00 45 0f b7 75 00 <44> 89 f6 81 e6 00 02 00 00 31 ff e8 f6 7d e7 fe 44 89 f0 25 00 02
RSP: 0018:ffffc900112afa78 EFLAGS: 00000246
RAX: 0000000000000000 RBX: 0000000000000000 RCX: 0000000000080000
RDX: ffffc90001a82000 RSI: 000000000007ffff RDI: 0000000000080000
RBP: ffffc900112afbd0 R08: ffff888137eeb877 R09: 0000000000000000
R10: ffff888137eeb868 R11: ffffed1026fdd70f R12: dffffc0000000000
R13: ffffffff8650c508 R14: 0000000000000f2f R15: ffff88812919a000
__do_sys_io_uring_enter io_uring/io_uring.c:3408 [inline]
__se_sys_io_uring_enter+0x326/0x24f0 io_uring/io_uring.c:3339
__x64_sys_io_uring_enter+0xe9/0x110 io_uring/io_uring.c:3339
x64_sys_call+0x2d28/0x2ee0 arch/x86/include/generated/asm/syscalls_64.h:427
do_syscall_x64 arch/x86/entry/common.c:47 [inline]
do_syscall_64+0x57/0xf0 arch/x86/entry/common.c:78
entry_SYSCALL_64_after_hwframe+0x76/0x7e
RIP: 0033:0x7fb97f99ce59
Code: ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 44 00 00 48 89 f8 48 89 f7 48 89 d6 48 89 ca 4d 89 c2 4d 89 c8 4c 8b 4c 24 08 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 c7 c1 e8 ff ff ff f7 d8 64 89 01 48
RSP: 002b:00007fb980775f38 EFLAGS: 00000246 ORIG_RAX: 00000000000001aa
RAX: ffffffffffffffda RBX: 0000200000001000 RCX: 00007fb97f99ce59
RDX: 0000000000000000 RSI: 0000000000000001 RDI: 00000000000000ca
RBP: 0000000000000001 R08: 0000000000000000 R09: 0000000000000008
R10: 0000000000000000 R11: 0000000000000246 R12: 0000200000007e20
R13: 0000200000007e28 R14: 0000000000000001 R15: 00000000000000bd
---[ end trace ]---
==================================================================
BUG: KASAN: global-out-of-bounds in aiptek_irq+0x20e9/0x2a00 drivers/input/tablet/aiptek.c:741
Read of size 4 at addr ffffffff8670f34c by task syz.0.82/725
CPU: 0 UID: 0 PID: 725 Comm: syz.0.82 Not tainted syzkaller #0 471281939cd7bfdfff4c6b6074d5d68627c837ba
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 05/09/2026
Call Trace:
__dump_stack+0x21/0x30 lib/dump_stack.c:94
dump_stack_lvl+0x140/0x1c0 lib/dump_stack.c:120
print_address_description+0x71/0x210 mm/kasan/report.c:377
print_report+0x4a/0x70 mm/kasan/report.c:481
kasan_report+0x162/0x1a0 mm/kasan/report.c:594
__asan_report_load4_noabort+0x18/0x20 mm/kasan/report_generic.c:380
aiptek_irq+0x20e9/0x2a00 drivers/input/tablet/aiptek.c:741
__usb_hcd_giveback_urb+0x375/0x540 drivers/usb/core/hcd.c:1648
usb_hcd_giveback_urb+0x11b/0x410 drivers/usb/core/hcd.c:1732
dummy_timer+0x816/0x4300 drivers/usb/gadget/udc/dummy_hcd.c:2003
__run_hrtimer kernel/time/hrtimer.c:1753 [inline]
__hrtimer_run_queues+0x3ab/0x8e0 kernel/time/hrtimer.c:1817
hrtimer_run_softirq+0x159/0x560 kernel/time/hrtimer.c:1834
handle_softirqs+0x1aa/0x630 kernel/softirq.c:621
__do_softirq kernel/softirq.c:659 [inline]
invoke_softirq kernel/softirq.c:476 [inline]
__irq_exit_rcu+0x47/0xb0 kernel/softirq.c:708
irq_exit_rcu+0xd/0x30 kernel/softirq.c:720
instr_sysvec_apic_timer_interrupt arch/x86/kernel/apic/apic.c:1049 [inline]
sysvec_apic_timer_interrupt+0x82/0x90 arch/x86/kernel/apic/apic.c:1049
asm_sysvec_apic_timer_interrupt+0x1f/0x30 arch/x86/include/asm/idtentry.h:702
RIP: 0010:io_init_req io_uring/io_uring.c:2136 [inline]
RIP: 0010:io_submit_sqe io_uring/io_uring.c:2220 [inline]
RIP: 0010:io_submit_sqes+0x6aa/0x1b30 io_uring/io_uring.c:2373
Code: 00 00 e8 89 7a e7 fe 49 bc 00 00 00 00 00 fc ff df 4c 89 e8 48 c1 e8 03 42 0f b6 04 20 84 c0 0f 85 31 0b 00 00 45 0f b7 75 00 <44> 89 f6 81 e6 00 02 00 00 31 ff e8 f6 7d e7 fe 44 89 f0 25 00 02
RSP: 0018:ffffc900112afa78 EFLAGS: 00000246
RAX: 0000000000000000 RBX: 0000000000000000 RCX: 0000000000080000
RDX: ffffc90001a82000 RSI: 000000000007ffff RDI: 0000000000080000
RBP: ffffc900112afbd0 R08: ffff888137eeb877 R09: 0000000000000000
R10: ffff888137eeb868 R11: ffffed1026fdd70f R12: dffffc0000000000
R13: ffffffff8650c508 R14: 0000000000000f2f R15: ffff88812919a000
__do_sys_io_uring_enter io_uring/io_uring.c:3408 [inline]
__se_sys_io_uring_enter+0x326/0x24f0 io_uring/io_uring.c:3339
__x64_sys_io_uring_enter+0xe9/0x110 io_uring/io_uring.c:3339
x64_sys_call+0x2d28/0x2ee0 arch/x86/include/generated/asm/syscalls_64.h:427
do_syscall_x64 arch/x86/entry/common.c:47 [inline]
do_syscall_64+0x57/0xf0 arch/x86/entry/common.c:78
entry_SYSCALL_64_after_hwframe+0x76/0x7e
RIP: 0033:0x7fb97f99ce59
Code: ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 44 00 00 48 89 f8 48 89 f7 48 89 d6 48 89 ca 4d 89 c2 4d 89 c8 4c 8b 4c 24 08 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 c7 c1 e8 ff ff ff f7 d8 64 89 01 48
RSP: 002b:00007fb980775f38 EFLAGS: 00000246 ORIG_RAX: 00000000000001aa
RAX: ffffffffffffffda RBX: 0000200000001000 RCX: 00007fb97f99ce59
RDX: 0000000000000000 RSI: 0000000000000001 RDI: 00000000000000ca
RBP: 0000000000000001 R08: 0000000000000000 R09: 0000000000000008
R10: 0000000000000000 R11: 0000000000000246 R12: 0000200000007e20
R13: 0000200000007e28 R14: 0000000000000001 R15: 00000000000000bd
The buggy address belongs to the variable:
.str.48+0xc/0x20
The buggy address belongs to the physical page:
page: refcount:1 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x670f
flags: 0x4000(reserved|zone=0)
raw: 0000000000004000 ffffea000019c3c8 ffffea000019c3c8 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:
ffffffff8670f200: 07 f9 f9 f9 04 f9 f9 f9 06 f9 f9 f9 00 01 f9 f9
ffffffff8670f280: 05 f9 f9 f9 00 00 00 00 00 00 00 00 00 00 00 00
>ffffffff8670f300: 00 00 00 00 f9 f9 f9 f9 06 f9 f9 f9 00 01 f9 f9
^
ffffffff8670f380: 04 f9 f9 f9 00 f9 f9 f9 06 f9 f9 f9 07 f9 f9 f9
ffffffff8670f400: 06 f9 f9 f9 00 04 f9 f9 05 f9 f9 f9 00 03 f9 f9
==================================================================
------------[ cut here ]------------
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: 0 UID: 0 PID: 725 Comm: syz.0.82 Tainted: G B syzkaller #0 471281939cd7bfdfff4c6b6074d5d68627c837ba
Tainted: [B]=BAD_PAGE
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 05/09/2026
Call Trace:
__dump_stack+0x21/0x30 lib/dump_stack.c:94
dump_stack_lvl+0x140/0x1c0 lib/dump_stack.c:120
dump_stack+0x19/0x20 lib/dump_stack.c:129
ubsan_epilogue+0xe/0x40 lib/ubsan.c:231
__ubsan_handle_out_of_bounds+0xe8/0xf0 lib/ubsan.c:429
aiptek_irq+0x1f85/0x2a00 drivers/input/tablet/aiptek.c:763
__usb_hcd_giveback_urb+0x375/0x540 drivers/usb/core/hcd.c:1648
usb_hcd_giveback_urb+0x11b/0x410 drivers/usb/core/hcd.c:1732
dummy_timer+0x816/0x4300 drivers/usb/gadget/udc/dummy_hcd.c:2003
__run_hrtimer kernel/time/hrtimer.c:1753 [inline]
__hrtimer_run_queues+0x3ab/0x8e0 kernel/time/hrtimer.c:1817
hrtimer_run_softirq+0x159/0x560 kernel/time/hrtimer.c:1834
handle_softirqs+0x1aa/0x630 kernel/softirq.c:621
__do_softirq kernel/softirq.c:659 [inline]
invoke_softirq kernel/softirq.c:476 [inline]
__irq_exit_rcu+0x47/0xb0 kernel/softirq.c:708
irq_exit_rcu+0xd/0x30 kernel/softirq.c:720
instr_sysvec_apic_timer_interrupt arch/x86/kernel/apic/apic.c:1049 [inline]
sysvec_apic_timer_interrupt+0x82/0x90 arch/x86/kernel/apic/apic.c:1049
asm_sysvec_apic_timer_interrupt+0x1f/0x30 arch/x86/include/asm/idtentry.h:702
RIP: 0010:io_init_req io_uring/io_uring.c:2136 [inline]
RIP: 0010:io_submit_sqe io_uring/io_uring.c:2220 [inline]
RIP: 0010:io_submit_sqes+0x6aa/0x1b30 io_uring/io_uring.c:2373
Code: 00 00 e8 89 7a e7 fe 49 bc 00 00 00 00 00 fc ff df 4c 89 e8 48 c1 e8 03 42 0f b6 04 20 84 c0 0f 85 31 0b 00 00 45 0f b7 75 00 <44> 89 f6 81 e6 00 02 00 00 31 ff e8 f6 7d e7 fe 44 89 f0 25 00 02
RSP: 0018:ffffc900112afa78 EFLAGS: 00000246
RAX: 0000000000000000 RBX: 0000000000000000 RCX: 0000000000080000
RDX: ffffc90001a82000 RSI: 000000000007ffff RDI: 0000000000080000
RBP: ffffc900112afbd0 R08: ffff888137eeb877 R09: 0000000000000000
R10: ffff888137eeb868 R11: ffffed1026fdd70f R12: dffffc0000000000
R13: ffffffff8650c508 R14: 0000000000000f2f R15: ffff88812919a000
__do_sys_io_uring_enter io_uring/io_uring.c:3408 [inline]
__se_sys_io_uring_enter+0x326/0x24f0 io_uring/io_uring.c:3339
__x64_sys_io_uring_enter+0xe9/0x110 io_uring/io_uring.c:3339
x64_sys_call+0x2d28/0x2ee0 arch/x86/include/generated/asm/syscalls_64.h:427
do_syscall_x64 arch/x86/entry/common.c:47 [inline]
do_syscall_64+0x57/0xf0 arch/x86/entry/common.c:78
entry_SYSCALL_64_after_hwframe+0x76/0x7e
RIP: 0033:0x7fb97f99ce59
Code: ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 44 00 00 48 89 f8 48 89 f7 48 89 d6 48 89 ca 4d 89 c2 4d 89 c8 4c 8b 4c 24 08 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 c7 c1 e8 ff ff ff f7 d8 64 89 01 48
RSP: 002b:00007fb980775f38 EFLAGS: 00000246 ORIG_RAX: 00000000000001aa
RAX: ffffffffffffffda RBX: 0000200000001000 RCX: 00007fb97f99ce59
RDX: 0000000000000000 RSI: 0000000000000001 RDI: 00000000000000ca
RBP: 0000000000000001 R08: 0000000000000000 R09: 0000000000000008
R10: 0000000000000000 R11: 0000000000000246 R12: 0000200000007e20
R13: 0000200000007e28 R14: 0000000000000001 R15: 00000000000000bd
---[ end trace ]---
aiptek 4-1:0.0: aiptek_irq - usb_submit_urb failed with result -19
----------------
Code disassembly (best guess):
0: 00 00 add %al,(%rax)
2: e8 89 7a e7 fe call 0xfee77a90
7: 49 bc 00 00 00 00 00 movabs $0xdffffc0000000000,%r12
e: fc ff df
11: 4c 89 e8 mov %r13,%rax
14: 48 c1 e8 03 shr $0x3,%rax
18: 42 0f b6 04 20 movzbl (%rax,%r12,1),%eax
1d: 84 c0 test %al,%al
1f: 0f 85 31 0b 00 00 jne 0xb56
25: 45 0f b7 75 00 movzwl 0x0(%r13),%r14d
* 2a: 44 89 f6 mov %r14d,%esi <-- trapping instruction
2d: 81 e6 00 02 00 00 and $0x200,%esi
33: 31 ff xor %edi,%edi
35: e8 f6 7d e7 fe call 0xfee77e30
3a: 44 89 f0 mov %r14d,%eax
3d: 25 .byte 0x25
3e: 00 02 add %al,(%rdx)