------------[ cut here ]------------
UBSAN: array-index-out-of-bounds in drivers/input/tablet/aiptek.c:741:31
index 12799 is out of range for type 'const int[34]'
CPU: 1 UID: 0 PID: 298 Comm: syz-executor Not tainted syzkaller #0 24d49bbd58fde8b05052ac524e35fadc70590708
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:__sanitizer_cov_trace_switch+0x44/0xf0 kernel/kcov.c:-1
Code: 00 f3 48 0f bc c8 48 83 c1 fd 48 83 f9 03 0f 87 b4 00 00 00 48 8b 06 48 85 c0 0f 84 a8 00 00 00 55 48 89 e5 41 57 41 56 41 54 <53> 48 8d 4c 09 01 48 8b 55 08 65 4c 8b 05 2a 74 7d 7e 45 31 c9 eb
RSP: 0018:ffffc9000b6f7948 EFLAGS: 00000202
RAX: 0000000000000002 RBX: ffffc9000b6f79f8 RCX: 0000000000000003
RDX: 000000000000007f RSI: ffffffff8760ba70 RDI: ffff88811a20c4b4
RBP: ffffc9000b6f7960 R08: ffff8881000788af R09: 1ffff1102000f115
R10: dffffc0000000000 R11: ffffed102000f116 R12: 0000000000000000
R13: dffffc0000000000 R14: 00000000000003e7 R15: ffff88811a20c4b4
rb_reserve_next_event kernel/trace/ring_buffer.c:4714 [inline]
ring_buffer_lock_reserve+0xc42/0x1060 kernel/trace/ring_buffer.c:4771
__trace_buffer_lock_reserve kernel/trace/trace.c:1039 [inline]
trace_event_buffer_lock_reserve+0xfc/0x730 kernel/trace/trace.c:2748
trace_event_buffer_reserve+0x262/0x380 kernel/trace/trace_events.c:661
do_trace_event_raw_event_hrtimer_init include/trace/events/timer.h:193 [inline]
trace_event_raw_event_hrtimer_init+0x107/0x260 include/trace/events/timer.h:193
trace_hrtimer_init include/trace/events/timer.h:193 [inline]
debug_init kernel/time/hrtimer.c:493 [inline]
hrtimer_init_sleeper+0x134/0x180 kernel/time/hrtimer.c:2064
hrtimer_init_sleeper_on_stack include/linux/hrtimer.h:255 [inline]
hrtimer_nanosleep+0xc7/0x340 kernel/time/hrtimer.c:2144
common_nsleep+0x93/0xb0 kernel/time/posix-timers.c:1373
__do_sys_clock_nanosleep kernel/time/posix-timers.c:1419 [inline]
__se_sys_clock_nanosleep+0x321/0x3b0 kernel/time/posix-timers.c:1396
__x64_sys_clock_nanosleep+0x9f/0xc0 kernel/time/posix-timers.c:1396
x64_sys_call+0x2554/0x2ee0 arch/x86/include/generated/asm/syscalls_64.h:231
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: 0033:0x7fcf4ef59257
Code: 48 89 fa 4c 89 df e8 a8 56 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:00007ffe7d1930e0 EFLAGS: 00000202 ORIG_RAX: 00000000000000e6
RAX: ffffffffffffffda RBX: 00005555661d5500 RCX: 00007fcf4ef59257
RDX: 00007ffe7d193120 RSI: 0000000000000000 RDI: 0000000000000000
RBP: 00007ffe7d19318c R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000202 R12: 0000000000001388
R13: 00000000000927c0 R14: 0000000000017f66 R15: 00007ffe7d1931e0
---[ 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 ffffffff86710f3c by task syz-executor/298
CPU: 1 UID: 0 PID: 298 Comm: syz-executor Not tainted syzkaller #0 24d49bbd58fde8b05052ac524e35fadc70590708
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:__sanitizer_cov_trace_switch+0x44/0xf0 kernel/kcov.c:-1
Code: 00 f3 48 0f bc c8 48 83 c1 fd 48 83 f9 03 0f 87 b4 00 00 00 48 8b 06 48 85 c0 0f 84 a8 00 00 00 55 48 89 e5 41 57 41 56 41 54 <53> 48 8d 4c 09 01 48 8b 55 08 65 4c 8b 05 2a 74 7d 7e 45 31 c9 eb
RSP: 0018:ffffc9000b6f7948 EFLAGS: 00000202
RAX: 0000000000000002 RBX: ffffc9000b6f79f8 RCX: 0000000000000003
RDX: 000000000000007f RSI: ffffffff8760ba70 RDI: ffff88811a20c4b4
RBP: ffffc9000b6f7960 R08: ffff8881000788af R09: 1ffff1102000f115
R10: dffffc0000000000 R11: ffffed102000f116 R12: 0000000000000000
R13: dffffc0000000000 R14: 00000000000003e7 R15: ffff88811a20c4b4
rb_reserve_next_event kernel/trace/ring_buffer.c:4714 [inline]
ring_buffer_lock_reserve+0xc42/0x1060 kernel/trace/ring_buffer.c:4771
__trace_buffer_lock_reserve kernel/trace/trace.c:1039 [inline]
trace_event_buffer_lock_reserve+0xfc/0x730 kernel/trace/trace.c:2748
trace_event_buffer_reserve+0x262/0x380 kernel/trace/trace_events.c:661
do_trace_event_raw_event_hrtimer_init include/trace/events/timer.h:193 [inline]
trace_event_raw_event_hrtimer_init+0x107/0x260 include/trace/events/timer.h:193
trace_hrtimer_init include/trace/events/timer.h:193 [inline]
debug_init kernel/time/hrtimer.c:493 [inline]
hrtimer_init_sleeper+0x134/0x180 kernel/time/hrtimer.c:2064
hrtimer_init_sleeper_on_stack include/linux/hrtimer.h:255 [inline]
hrtimer_nanosleep+0xc7/0x340 kernel/time/hrtimer.c:2144
common_nsleep+0x93/0xb0 kernel/time/posix-timers.c:1373
__do_sys_clock_nanosleep kernel/time/posix-timers.c:1419 [inline]
__se_sys_clock_nanosleep+0x321/0x3b0 kernel/time/posix-timers.c:1396
__x64_sys_clock_nanosleep+0x9f/0xc0 kernel/time/posix-timers.c:1396
x64_sys_call+0x2554/0x2ee0 arch/x86/include/generated/asm/syscalls_64.h:231
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: 0033:0x7fcf4ef59257
Code: 48 89 fa 4c 89 df e8 a8 56 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:00007ffe7d1930e0 EFLAGS: 00000202 ORIG_RAX: 00000000000000e6
RAX: ffffffffffffffda RBX: 00005555661d5500 RCX: 00007fcf4ef59257
RDX: 00007ffe7d193120 RSI: 0000000000000000 RDI: 0000000000000000
RBP: 00007ffe7d19318c R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000202 R12: 0000000000001388
R13: 00000000000927c0 R14: 0000000000017f66 R15: 00007ffe7d1931e0
The buggy address belongs to the variable:
.str.8+0x1c/0x40
The buggy address belongs to the physical page:
page: refcount:1 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x6710
flags: 0x4000(reserved|zone=0)
raw: 0000000000004000 ffffea000019c408 ffffea000019c408 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:
ffffffff86710e00: f9 f9 f9 f9 00 00 00 04 f9 f9 f9 f9 00 01 f9 f9
ffffffff86710e80: 01 f9 f9 f9 00 00 00 03 f9 f9 f9 f9 00 00 06 f9
>ffffffff86710f00: f9 f9 f9 f9 00 00 03 f9 f9 f9 f9 f9 00 00 00 00
^
ffffffff86710f80: 00 00 00 01 f9 f9 f9 f9 00 00 06 f9 f9 f9 f9 f9
ffffffff86711000: 00 00 00 04 f9 f9 f9 f9 00 00 00 f9 f9 f9 f9 f9
==================================================================
------------[ cut here ]------------
UBSAN: array-index-out-of-bounds in drivers/input/tablet/aiptek.c:763:30
index 12800 is out of range for type 'const int[34]'
CPU: 1 UID: 0 PID: 298 Comm: syz-executor Tainted: G B syzkaller #0 24d49bbd58fde8b05052ac524e35fadc70590708
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:__sanitizer_cov_trace_switch+0x44/0xf0 kernel/kcov.c:-1
Code: 00 f3 48 0f bc c8 48 83 c1 fd 48 83 f9 03 0f 87 b4 00 00 00 48 8b 06 48 85 c0 0f 84 a8 00 00 00 55 48 89 e5 41 57 41 56 41 54 <53> 48 8d 4c 09 01 48 8b 55 08 65 4c 8b 05 2a 74 7d 7e 45 31 c9 eb
RSP: 0018:ffffc9000b6f7948 EFLAGS: 00000202
RAX: 0000000000000002 RBX: ffffc9000b6f79f8 RCX: 0000000000000003
RDX: 000000000000007f RSI: ffffffff8760ba70 RDI: ffff88811a20c4b4
RBP: ffffc9000b6f7960 R08: ffff8881000788af R09: 1ffff1102000f115
R10: dffffc0000000000 R11: ffffed102000f116 R12: 0000000000000000
R13: dffffc0000000000 R14: 00000000000003e7 R15: ffff88811a20c4b4
rb_reserve_next_event kernel/trace/ring_buffer.c:4714 [inline]
ring_buffer_lock_reserve+0xc42/0x1060 kernel/trace/ring_buffer.c:4771
__trace_buffer_lock_reserve kernel/trace/trace.c:1039 [inline]
trace_event_buffer_lock_reserve+0xfc/0x730 kernel/trace/trace.c:2748
trace_event_buffer_reserve+0x262/0x380 kernel/trace/trace_events.c:661
do_trace_event_raw_event_hrtimer_init include/trace/events/timer.h:193 [inline]
trace_event_raw_event_hrtimer_init+0x107/0x260 include/trace/events/timer.h:193
trace_hrtimer_init include/trace/events/timer.h:193 [inline]
debug_init kernel/time/hrtimer.c:493 [inline]
hrtimer_init_sleeper+0x134/0x180 kernel/time/hrtimer.c:2064
hrtimer_init_sleeper_on_stack include/linux/hrtimer.h:255 [inline]
hrtimer_nanosleep+0xc7/0x340 kernel/time/hrtimer.c:2144
common_nsleep+0x93/0xb0 kernel/time/posix-timers.c:1373
__do_sys_clock_nanosleep kernel/time/posix-timers.c:1419 [inline]
__se_sys_clock_nanosleep+0x321/0x3b0 kernel/time/posix-timers.c:1396
__x64_sys_clock_nanosleep+0x9f/0xc0 kernel/time/posix-timers.c:1396
x64_sys_call+0x2554/0x2ee0 arch/x86/include/generated/asm/syscalls_64.h:231
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: 0033:0x7fcf4ef59257
Code: 48 89 fa 4c 89 df e8 a8 56 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:00007ffe7d1930e0 EFLAGS: 00000202 ORIG_RAX: 00000000000000e6
RAX: ffffffffffffffda RBX: 00005555661d5500 RCX: 00007fcf4ef59257
RDX: 00007ffe7d193120 RSI: 0000000000000000 RDI: 0000000000000000
RBP: 00007ffe7d19318c R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000202 R12: 0000000000001388
R13: 00000000000927c0 R14: 0000000000017f66 R15: 00007ffe7d1931e0
---[ end trace ]---
aiptek 2-1:0.0: aiptek_irq - usb_submit_urb failed with result -19
----------------
Code disassembly (best guess):
0: 00 f3 add %dh,%bl
2: 48 0f bc c8 bsf %rax,%rcx
6: 48 83 c1 fd add $0xfffffffffffffffd,%rcx
a: 48 83 f9 03 cmp $0x3,%rcx
e: 0f 87 b4 00 00 00 ja 0xc8
14: 48 8b 06 mov (%rsi),%rax
17: 48 85 c0 test %rax,%rax
1a: 0f 84 a8 00 00 00 je 0xc8
20: 55 push %rbp
21: 48 89 e5 mov %rsp,%rbp
24: 41 57 push %r15
26: 41 56 push %r14
28: 41 54 push %r12
* 2a: 53 push %rbx <-- trapping instruction
2b: 48 8d 4c 09 01 lea 0x1(%rcx,%rcx,1),%rcx
30: 48 8b 55 08 mov 0x8(%rbp),%rdx
34: 65 4c 8b 05 2a 74 7d mov %gs:0x7e7d742a(%rip),%r8 # 0x7e7d7466
3b: 7e
3c: 45 31 c9 xor %r9d,%r9d
3f: eb .byte 0xeb