================================================================================
UBSAN: array-index-out-of-bounds in drivers/input/tablet/aiptek.c:741:31
index 690 is out of range for type 'const int[34]'
CPU: 0 PID: 2582 Comm: syz.2.796 Tainted: G W syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 07/24/2026
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+0x2045/0x29b0 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:1749
dummy_timer+0xa34/0x31d0 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+0x637/0x9a0 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:__schedule+0xd4/0x14a0 kernel/sched/core.c:6426
Code: 48 8b 1b 4c 8d b3 60 83 03 00 4c 89 f0 48 c1 e8 03 48 89 44 24 58 42 80 3c 20 00 74 08 4c 89 f7 e8 b1 ca f6 fc 4c 89 74 24 30 <4d> 8b 2e 4d 8d 75 20 4c 89 f0 48 c1 e8 03 42 80 3c 20 00 74 08 4c
RSP: 0018:ffffc900011ff460 EFLAGS: 00000246
RAX: 1ffff1103ee0706c RBX: ffff8881f7000000 RCX: 31915f4904a29900
RDX: ffffc90001f8e000 RSI: ffffffff85638320 RDI: ffffffff856382e0
RBP: ffffc900011ff560 R08: ffffc900011ff5f7 R09: ffffc900011ff5c0
R10: dffffc0000000000 R11: fffff5200023febf R12: dffffc0000000000
R13: dffffc0000000000 R14: ffff8881f7038360 R15: 1ffff9200023fe98
schedule+0x11e/0x1e0 kernel/sched/core.c:6621
schedule_timeout+0xba/0x340 kernel/time/timer.c:1898
unix_wait_for_peer+0x1f2/0x2e0 net/unix/af_unix.c:1319
unix_dgram_sendmsg+0x1155/0x19b0 net/unix/af_unix.c:1917
sock_sendmsg_nosec net/socket.c:704 [inline]
__sock_sendmsg net/socket.c:716 [inline]
____sys_sendmsg+0x5be/0x8f0 net/socket.c:2436
___sys_sendmsg+0x236/0x2e0 net/socket.c:2490
__sys_sendmmsg+0x2ba/0x4e0 net/socket.c:2576
__do_sys_sendmmsg net/socket.c:2605 [inline]
__se_sys_sendmmsg net/socket.c:2602 [inline]
__x64_sys_sendmmsg+0xa0/0xb0 net/socket.c:2602
x64_sys_call+0x6c6/0x9a0 arch/x86/include/generated/asm/syscalls_64.h:308
do_syscall_x64 arch/x86/entry/common.c:50 [inline]
do_syscall_64+0x4c/0xa0 arch/x86/entry/common.c:80
entry_SYSCALL_64_after_hwframe+0x66/0xd0
RIP: 0033:0x7f451a581019
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:00007f4518fda028 EFLAGS: 00000246 ORIG_RAX: 0000000000000133
RAX: ffffffffffffffda RBX: 00007f451a808fa0 RCX: 00007f451a581019
RDX: 0000000000000651 RSI: 0000200000000000 RDI: 0000000000000004
RBP: 00007f451a61800c R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 00007f451a809038 R14: 00007f451a808fa0 R15: 00007fffe6b6b8a8
================================================================================
==================================================================
BUG: KASAN: global-out-of-bounds in aiptek_irq+0x2063/0x29b0 drivers/input/tablet/aiptek.c:741
Read of size 4 at addr ffffffff857ee708 by task syz.2.796/2582
CPU: 0 PID: 2582 Comm: syz.2.796 Tainted: G W syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 07/24/2026
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+0x10f/0x150 mm/kasan/report.c:444
__asan_report_load4_noabort+0x14/0x20 mm/kasan/report_generic.c:308
aiptek_irq+0x2063/0x29b0 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:1749
dummy_timer+0xa34/0x31d0 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+0x637/0x9a0 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:__schedule+0xd4/0x14a0 kernel/sched/core.c:6426
Code: 48 8b 1b 4c 8d b3 60 83 03 00 4c 89 f0 48 c1 e8 03 48 89 44 24 58 42 80 3c 20 00 74 08 4c 89 f7 e8 b1 ca f6 fc 4c 89 74 24 30 <4d> 8b 2e 4d 8d 75 20 4c 89 f0 48 c1 e8 03 42 80 3c 20 00 74 08 4c
RSP: 0018:ffffc900011ff460 EFLAGS: 00000246
RAX: 1ffff1103ee0706c RBX: ffff8881f7000000 RCX: 31915f4904a29900
RDX: ffffc90001f8e000 RSI: ffffffff85638320 RDI: ffffffff856382e0
RBP: ffffc900011ff560 R08: ffffc900011ff5f7 R09: ffffc900011ff5c0
R10: dffffc0000000000 R11: fffff5200023febf R12: dffffc0000000000
R13: dffffc0000000000 R14: ffff8881f7038360 R15: 1ffff9200023fe98
schedule+0x11e/0x1e0 kernel/sched/core.c:6621
schedule_timeout+0xba/0x340 kernel/time/timer.c:1898
unix_wait_for_peer+0x1f2/0x2e0 net/unix/af_unix.c:1319
unix_dgram_sendmsg+0x1155/0x19b0 net/unix/af_unix.c:1917
sock_sendmsg_nosec net/socket.c:704 [inline]
__sock_sendmsg net/socket.c:716 [inline]
____sys_sendmsg+0x5be/0x8f0 net/socket.c:2436
___sys_sendmsg+0x236/0x2e0 net/socket.c:2490
__sys_sendmmsg+0x2ba/0x4e0 net/socket.c:2576
__do_sys_sendmmsg net/socket.c:2605 [inline]
__se_sys_sendmmsg net/socket.c:2602 [inline]
__x64_sys_sendmmsg+0xa0/0xb0 net/socket.c:2602
x64_sys_call+0x6c6/0x9a0 arch/x86/include/generated/asm/syscalls_64.h:308
do_syscall_x64 arch/x86/entry/common.c:50 [inline]
do_syscall_64+0x4c/0xa0 arch/x86/entry/common.c:80
entry_SYSCALL_64_after_hwframe+0x66/0xd0
RIP: 0033:0x7f451a581019
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:00007f4518fda028 EFLAGS: 00000246 ORIG_RAX: 0000000000000133
RAX: ffffffffffffffda RBX: 00007f451a808fa0 RCX: 00007f451a581019
RDX: 0000000000000651 RSI: 0000200000000000 RDI: 0000000000000004
RBP: 00007f451a61800c R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 00007f451a809038 R14: 00007f451a808fa0 R15: 00007fffe6b6b8a8
The buggy address belongs to the variable:
.str.75+0x8/0x20
Memory state around the buggy address:
ffffffff857ee600: 00 00 00 00 f9 f9 f9 f9 00 01 f9 f9 00 f9 f9 f9
ffffffff857ee680: 00 03 f9 f9 00 06 f9 f9 06 f9 f9 f9 00 05 f9 f9
>ffffffff857ee700: 06 f9 f9 f9 06 f9 f9 f9 00 00 00 00 00 00 f9 f9
^
ffffffff857ee780: f9 f9 f9 f9 00 05 f9 f9 00 03 f9 f9 05 f9 f9 f9
ffffffff857ee800: 07 f9 f9 f9 06 f9 f9 f9 00 00 00 00 00 00 00 00
==================================================================
================================================================================
UBSAN: array-index-out-of-bounds in drivers/input/tablet/aiptek.c:763:30
index 691 is out of range for type 'const int[34]'
CPU: 0 PID: 2582 Comm: syz.2.796 Tainted: G B W syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 07/24/2026
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+0x1f14/0x29b0 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:1749
dummy_timer+0xa34/0x31d0 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+0x637/0x9a0 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:__schedule+0xd4/0x14a0 kernel/sched/core.c:6426
Code: 48 8b 1b 4c 8d b3 60 83 03 00 4c 89 f0 48 c1 e8 03 48 89 44 24 58 42 80 3c 20 00 74 08 4c 89 f7 e8 b1 ca f6 fc 4c 89 74 24 30 <4d> 8b 2e 4d 8d 75 20 4c 89 f0 48 c1 e8 03 42 80 3c 20 00 74 08 4c
RSP: 0018:ffffc900011ff460 EFLAGS: 00000246
RAX: 1ffff1103ee0706c RBX: ffff8881f7000000 RCX: 31915f4904a29900
RDX: ffffc90001f8e000 RSI: ffffffff85638320 RDI: ffffffff856382e0
RBP: ffffc900011ff560 R08: ffffc900011ff5f7 R09: ffffc900011ff5c0
R10: dffffc0000000000 R11: fffff5200023febf R12: dffffc0000000000
R13: dffffc0000000000 R14: ffff8881f7038360 R15: 1ffff9200023fe98
schedule+0x11e/0x1e0 kernel/sched/core.c:6621
schedule_timeout+0xba/0x340 kernel/time/timer.c:1898
unix_wait_for_peer+0x1f2/0x2e0 net/unix/af_unix.c:1319
unix_dgram_sendmsg+0x1155/0x19b0 net/unix/af_unix.c:1917
sock_sendmsg_nosec net/socket.c:704 [inline]
__sock_sendmsg net/socket.c:716 [inline]
____sys_sendmsg+0x5be/0x8f0 net/socket.c:2436
___sys_sendmsg+0x236/0x2e0 net/socket.c:2490
__sys_sendmmsg+0x2ba/0x4e0 net/socket.c:2576
__do_sys_sendmmsg net/socket.c:2605 [inline]
__se_sys_sendmmsg net/socket.c:2602 [inline]
__x64_sys_sendmmsg+0xa0/0xb0 net/socket.c:2602
x64_sys_call+0x6c6/0x9a0 arch/x86/include/generated/asm/syscalls_64.h:308
do_syscall_x64 arch/x86/entry/common.c:50 [inline]
do_syscall_64+0x4c/0xa0 arch/x86/entry/common.c:80
entry_SYSCALL_64_after_hwframe+0x66/0xd0
RIP: 0033:0x7f451a581019
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:00007f4518fda028 EFLAGS: 00000246 ORIG_RAX: 0000000000000133
RAX: ffffffffffffffda RBX: 00007f451a808fa0 RCX: 00007f451a581019
RDX: 0000000000000651 RSI: 0000200000000000 RDI: 0000000000000004
RBP: 00007f451a61800c R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 00007f451a809038 R14: 00007f451a808fa0 R15: 00007fffe6b6b8a8
================================================================================
aiptek 10-1:0.0: aiptek_irq - usb_submit_urb failed with result -19
sched: RT throttling activated
ip6_tunnel: ip6gre1 xmit: Local address not yet configured!
----------------
Code disassembly (best guess):
0: 48 8b 1b mov (%rbx),%rbx
3: 4c 8d b3 60 83 03 00 lea 0x38360(%rbx),%r14
a: 4c 89 f0 mov %r14,%rax
d: 48 c1 e8 03 shr $0x3,%rax
11: 48 89 44 24 58 mov %rax,0x58(%rsp)
16: 42 80 3c 20 00 cmpb $0x0,(%rax,%r12,1)
1b: 74 08 je 0x25
1d: 4c 89 f7 mov %r14,%rdi
20: e8 b1 ca f6 fc call 0xfcf6cad6
25: 4c 89 74 24 30 mov %r14,0x30(%rsp)
* 2a: 4d 8b 2e mov (%r14),%r13 <-- trapping instruction
2d: 4d 8d 75 20 lea 0x20(%r13),%r14
31: 4c 89 f0 mov %r14,%rax
34: 48 c1 e8 03 shr $0x3,%rax
38: 42 80 3c 20 00 cmpb $0x0,(%rax,%r12,1)
3d: 74 08 je 0x47
3f: 4c rex.WR