------------[ cut here ]------------
UBSAN: array-index-out-of-bounds in drivers/input/tablet/aiptek.c:741:31
index 61704 is out of range for type 'const int[34]'
CPU: 1 UID: 0 PID: 404 Comm: udevd Not tainted syzkaller #0 530bafefbfb71712cc923bbf40d44c9abc20558f
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 07/24/2026
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+0x208d/0x2a00 drivers/input/tablet/aiptek.c:741
__usb_hcd_giveback_urb+0x36e/0x530 drivers/usb/core/hcd.c:1648
usb_hcd_giveback_urb+0x12b/0x400 drivers/usb/core/hcd.c:1732
dummy_timer+0xa3f/0x4900 drivers/usb/gadget/udc/dummy_hcd.c:2003
__run_hrtimer kernel/time/hrtimer.c:1757 [inline]
__hrtimer_run_queues+0x3ae/0x8e0 kernel/time/hrtimer.c:1821
hrtimer_run_softirq+0x159/0x560 kernel/time/hrtimer.c:1838
handle_softirqs+0x1aa/0x620 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:__call_rcu_common+0x490/0x710 kernel/rcu/tree.c:3121
Code: 48 8b 05 c3 2a ed 05 49 03 06 48 39 c3 48 bb 00 00 00 00 00 fc ff df 0f 8f d5 00 00 00 fb 48 c7 84 24 80 00 00 00 0e 36 e0 45 <48> 8b 44 24 78 48 c7 04 18 00 00 00 00 65 48 8b 04 25 28 00 00 00
RSP: 0018:ffffc9000d277cc0 EFLAGS: 00000206
RAX: 8ad654756b846600 RBX: dffffc0000000000 RCX: dffffc0000000000
RDX: 0000000000000001 RSI: ffff88811036c3a8 RDI: ffff8881f6f50d80
RBP: ffffc9000d277dc8 R08: ffff8881f6f50c47 R09: 1ffff1103edea188
R10: dffffc0000000000 R11: ffffed103edea189 R12: 000000000000009f
R13: 1ffff1103edea174 R14: 0000000000000286 R15: 1ffff1103edea188
call_rcu+0x14/0x20 kernel/rcu/tree.c:3202
__put_cred+0xf6/0x130 kernel/cred.c:112
put_cred_many include/linux/cred.h:267 [inline]
put_cred include/linux/cred.h:280 [inline]
file_free fs/file_table.c:74 [inline]
__fput+0x6c3/0xa30 fs/file_table.c:460
__fput_sync+0x4a/0x70 fs/file_table.c:532
__do_sys_close fs/open.c:1592 [inline]
__se_sys_close+0x172/0x1f0 fs/open.c:1577
__x64_sys_close+0x3c/0x60 fs/open.c:1577
x64_sys_call+0x2560/0x2ee0 arch/x86/include/generated/asm/syscalls_64.h:4
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: 0033:0x7f34d54a7407
Code: 48 89 fa 4c 89 df e8 38 aa 00 00 8b 93 08 03 00 00 59 5e 48 83 f8 fc 74 1a 5b c3 0f 1f 84 00 00 00 00 00 48 8b 44 24 10 0f 05 <5b> c3 0f 1f 80 00 00 00 00 83 e2 39 83 fa 08 75 de e8 23 ff ff ff
RSP: 002b:00007ffe5003f9d0 EFLAGS: 00000202 ORIG_RAX: 0000000000000003
RAX: ffffffffffffffda RBX: 00007f34d5b86880 RCX: 00007f34d54a7407
RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000008
RBP: 0000000000000000 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000202 R12: 0000000000000008
R13: 00007f34d5b86770 R14: 0000000000000002 R15: 00007ffe50040be0
---[ end trace ]---
==================================================================
BUG: KASAN: global-out-of-bounds in aiptek_irq+0x20ab/0x2a00 drivers/input/tablet/aiptek.c:741
Read of size 4 at addr ffffffff86740f40 by task udevd/404
CPU: 1 UID: 0 PID: 404 Comm: udevd Not tainted syzkaller #0 530bafefbfb71712cc923bbf40d44c9abc20558f
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 07/24/2026
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+0x20ab/0x2a00 drivers/input/tablet/aiptek.c:741
__usb_hcd_giveback_urb+0x36e/0x530 drivers/usb/core/hcd.c:1648
usb_hcd_giveback_urb+0x12b/0x400 drivers/usb/core/hcd.c:1732
dummy_timer+0xa3f/0x4900 drivers/usb/gadget/udc/dummy_hcd.c:2003
__run_hrtimer kernel/time/hrtimer.c:1757 [inline]
__hrtimer_run_queues+0x3ae/0x8e0 kernel/time/hrtimer.c:1821
hrtimer_run_softirq+0x159/0x560 kernel/time/hrtimer.c:1838
handle_softirqs+0x1aa/0x620 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:__call_rcu_common+0x490/0x710 kernel/rcu/tree.c:3121
Code: 48 8b 05 c3 2a ed 05 49 03 06 48 39 c3 48 bb 00 00 00 00 00 fc ff df 0f 8f d5 00 00 00 fb 48 c7 84 24 80 00 00 00 0e 36 e0 45 <48> 8b 44 24 78 48 c7 04 18 00 00 00 00 65 48 8b 04 25 28 00 00 00
RSP: 0018:ffffc9000d277cc0 EFLAGS: 00000206
RAX: 8ad654756b846600 RBX: dffffc0000000000 RCX: dffffc0000000000
RDX: 0000000000000001 RSI: ffff88811036c3a8 RDI: ffff8881f6f50d80
RBP: ffffc9000d277dc8 R08: ffff8881f6f50c47 R09: 1ffff1103edea188
R10: dffffc0000000000 R11: ffffed103edea189 R12: 000000000000009f
R13: 1ffff1103edea174 R14: 0000000000000286 R15: 1ffff1103edea188
call_rcu+0x14/0x20 kernel/rcu/tree.c:3202
__put_cred+0xf6/0x130 kernel/cred.c:112
put_cred_many include/linux/cred.h:267 [inline]
put_cred include/linux/cred.h:280 [inline]
file_free fs/file_table.c:74 [inline]
__fput+0x6c3/0xa30 fs/file_table.c:460
__fput_sync+0x4a/0x70 fs/file_table.c:532
__do_sys_close fs/open.c:1592 [inline]
__se_sys_close+0x172/0x1f0 fs/open.c:1577
__x64_sys_close+0x3c/0x60 fs/open.c:1577
x64_sys_call+0x2560/0x2ee0 arch/x86/include/generated/asm/syscalls_64.h:4
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: 0033:0x7f34d54a7407
Code: 48 89 fa 4c 89 df e8 38 aa 00 00 8b 93 08 03 00 00 59 5e 48 83 f8 fc 74 1a 5b c3 0f 1f 84 00 00 00 00 00 48 8b 44 24 10 0f 05 <5b> c3 0f 1f 80 00 00 00 00 83 e2 39 83 fa 08 75 de e8 23 ff ff ff
RSP: 002b:00007ffe5003f9d0 EFLAGS: 00000202 ORIG_RAX: 0000000000000003
RAX: ffffffffffffffda RBX: 00007f34d5b86880 RCX: 00007f34d54a7407
RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000008
RBP: 0000000000000000 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000202 R12: 0000000000000008
R13: 00007f34d5b86770 R14: 0000000000000002 R15: 00007ffe50040be0
The buggy address belongs to the variable:
.str.1+0x40/0xa0
The buggy address belongs to the physical page:
page: refcount:1 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x6740
flags: 0x4000(reserved|zone=0)
raw: 0000000000004000 ffffea000019d008 ffffea000019d008 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:
ffffffff86740e00: 00 00 03 f9 f9 f9 f9 f9 00 00 00 00 02 f9 f9 f9
ffffffff86740e80: f9 f9 f9 f9 00 00 00 00 00 00 01 f9 f9 f9 f9 f9
>ffffffff86740f00: 00 00 00 00 00 04 f9 f9 f9 f9 f9 f9 00 00 00 00
^
ffffffff86740f80: 00 00 00 00 00 00 00 00 04 f9 f9 f9 f9 f9 f9 f9
ffffffff86741000: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
==================================================================
------------[ cut here ]------------
UBSAN: array-index-out-of-bounds in drivers/input/tablet/aiptek.c:763:30
index 61705 is out of range for type 'const int[34]'
CPU: 1 UID: 0 PID: 404 Comm: udevd Tainted: G B syzkaller #0 530bafefbfb71712cc923bbf40d44c9abc20558f
Tainted: [B]=BAD_PAGE
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 07/24/2026
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+0x1f3c/0x2a00 drivers/input/tablet/aiptek.c:763
__usb_hcd_giveback_urb+0x36e/0x530 drivers/usb/core/hcd.c:1648
usb_hcd_giveback_urb+0x12b/0x400 drivers/usb/core/hcd.c:1732
dummy_timer+0xa3f/0x4900 drivers/usb/gadget/udc/dummy_hcd.c:2003
__run_hrtimer kernel/time/hrtimer.c:1757 [inline]
__hrtimer_run_queues+0x3ae/0x8e0 kernel/time/hrtimer.c:1821
hrtimer_run_softirq+0x159/0x560 kernel/time/hrtimer.c:1838
handle_softirqs+0x1aa/0x620 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:__call_rcu_common+0x490/0x710 kernel/rcu/tree.c:3121
Code: 48 8b 05 c3 2a ed 05 49 03 06 48 39 c3 48 bb 00 00 00 00 00 fc ff df 0f 8f d5 00 00 00 fb 48 c7 84 24 80 00 00 00 0e 36 e0 45 <48> 8b 44 24 78 48 c7 04 18 00 00 00 00 65 48 8b 04 25 28 00 00 00
RSP: 0018:ffffc9000d277cc0 EFLAGS: 00000206
RAX: 8ad654756b846600 RBX: dffffc0000000000 RCX: dffffc0000000000
RDX: 0000000000000001 RSI: ffff88811036c3a8 RDI: ffff8881f6f50d80
RBP: ffffc9000d277dc8 R08: ffff8881f6f50c47 R09: 1ffff1103edea188
R10: dffffc0000000000 R11: ffffed103edea189 R12: 000000000000009f
R13: 1ffff1103edea174 R14: 0000000000000286 R15: 1ffff1103edea188
call_rcu+0x14/0x20 kernel/rcu/tree.c:3202
__put_cred+0xf6/0x130 kernel/cred.c:112
put_cred_many include/linux/cred.h:267 [inline]
put_cred include/linux/cred.h:280 [inline]
file_free fs/file_table.c:74 [inline]
__fput+0x6c3/0xa30 fs/file_table.c:460
__fput_sync+0x4a/0x70 fs/file_table.c:532
__do_sys_close fs/open.c:1592 [inline]
__se_sys_close+0x172/0x1f0 fs/open.c:1577
__x64_sys_close+0x3c/0x60 fs/open.c:1577
x64_sys_call+0x2560/0x2ee0 arch/x86/include/generated/asm/syscalls_64.h:4
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: 0033:0x7f34d54a7407
Code: 48 89 fa 4c 89 df e8 38 aa 00 00 8b 93 08 03 00 00 59 5e 48 83 f8 fc 74 1a 5b c3 0f 1f 84 00 00 00 00 00 48 8b 44 24 10 0f 05 <5b> c3 0f 1f 80 00 00 00 00 83 e2 39 83 fa 08 75 de e8 23 ff ff ff
RSP: 002b:00007ffe5003f9d0 EFLAGS: 00000202 ORIG_RAX: 0000000000000003
RAX: ffffffffffffffda RBX: 00007f34d5b86880 RCX: 00007f34d54a7407
RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000008
RBP: 0000000000000000 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000202 R12: 0000000000000008
R13: 00007f34d5b86770 R14: 0000000000000002 R15: 00007ffe50040be0
---[ end trace ]---
aiptek 9-1:0.0: aiptek_irq - usb_submit_urb failed with result -19
----------------
Code disassembly (best guess):
0: 48 8b 05 c3 2a ed 05 mov 0x5ed2ac3(%rip),%rax # 0x5ed2aca
7: 49 03 06 add (%r14),%rax
a: 48 39 c3 cmp %rax,%rbx
d: 48 bb 00 00 00 00 00 movabs $0xdffffc0000000000,%rbx
14: fc ff df
17: 0f 8f d5 00 00 00 jg 0xf2
1d: fb sti
1e: 48 c7 84 24 80 00 00 movq $0x45e0360e,0x80(%rsp)
25: 00 0e 36 e0 45
* 2a: 48 8b 44 24 78 mov 0x78(%rsp),%rax <-- trapping instruction
2f: 48 c7 04 18 00 00 00 movq $0x0,(%rax,%rbx,1)
36: 00
37: 65 48 8b 04 25 28 00 mov %gs:0x28,%rax
3e: 00 00