------------[ cut here ]------------
UBSAN: array-index-out-of-bounds in drivers/input/tablet/aiptek.c:741:31
index 8191 is out of range for type 'const int[34]'
CPU: 0 UID: 0 PID: 1888 Comm: syz.3.469 Not tainted syzkaller #0 a4a563d0c71b2f3eba821a1af94cbf4bdc8174ca
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 07/16/2026
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:arch_stack_walk+0x12c/0x170 arch/x86/kernel/stacktrace.c:27
Code: 4c 89 ff e8 66 87 06 00 48 85 c0 74 32 48 89 df 48 89 c6 4d 89 f3 41 ba 60 a3 fb e6 45 03 53 f1 74 02 0f 0b 2e e8 d0 04 c2 1e <84> c0 74 11 4c 89 ff e8 88 88 06 00 83 bd 78 ff ff ff 00 75 c1 65
RSP: 0018:ffffc90012d0f608 EFLAGS: 00000282
RAX: 0000000000000001 RBX: ffffc90012d0f6c0 RCX: 00000000025a1e00
RDX: dffffc0000000000 RSI: ffffffff81dbe2c8 RDI: ffffc90012d0f6c0
RBP: ffffc90012d0f690 R08: ffffc90012d0f6d0 R09: ffffc90012d0f6c8
R10: 0000000000000003 R11: ffffffff81759ed0 R12: ffff888120f8cc00
R13: 0000000000000000 R14: ffffffff81759ed0 R15: ffffc90012d0f608
stack_trace_save+0xaa/0x100 kernel/stacktrace.c:122
kasan_save_stack mm/kasan/common.c:49 [inline]
kasan_save_track+0x3e/0x80 mm/kasan/common.c:70
kasan_save_free_info+0x44/0x50 mm/kasan/generic.c:579
poison_slab_object mm/kasan/common.c:249 [inline]
__kasan_slab_free+0x5f/0x80 mm/kasan/common.c:266
kasan_slab_free include/linux/kasan.h:234 [inline]
slab_free_hook mm/slub.c:2445 [inline]
slab_free mm/slub.c:4714 [inline]
kfree+0x158/0x440 mm/slub.c:4875
io_clean_op+0x3ce/0x460 io_uring/io_uring.c:412
io_free_batch_list io_uring/io_uring.c:1445 [inline]
__io_submit_flush_completions+0xc5e/0xdb0 io_uring/io_uring.c:1481
io_submit_flush_completions io_uring/io_uring.h:150 [inline]
ctx_flush_and_put+0xf3/0x240 io_uring/io_uring.c:1028
io_handle_tw_list+0x2ea/0x330 io_uring/io_uring.c:1068
tctx_task_work_run+0xa4/0x290 io_uring/io_uring.c:1129
tctx_task_work+0x41/0x80 io_uring/io_uring.c:1147
task_work_run+0x1e8/0x260 kernel/task_work.c:246
get_signal+0x12b3/0x1490 kernel/signal.c:2706
arch_do_signal_or_restart+0xbc/0x700 arch/x86/kernel/signal.c:337
exit_to_user_mode_loop kernel/entry/common.c:111 [inline]
exit_to_user_mode_prepare include/linux/entry-common.h:328 [inline]
__syscall_exit_to_user_mode_work kernel/entry/common.c:207 [inline]
syscall_exit_to_user_mode+0x57/0xb0 kernel/entry/common.c:218
do_syscall_64+0x63/0xf0 arch/x86/entry/common.c:84
entry_SYSCALL_64_after_hwframe+0x76/0x7e
RIP: 0033:0x7f981299de99
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:00007f9813918f38 EFLAGS: 00000246 ORIG_RAX: 00000000000001aa
RAX: 0000000000000001 RBX: 0000200000000340 RCX: 00007f981299de99
RDX: 0000000000000000 RSI: 0000000000000001 RDI: 000000000000000c
RBP: 000000000000048f R08: 0000000000000000 R09: 0000000000000008
R10: 0000000000000000 R11: 0000000000000246 R12: 0000200000000940
R13: 0000200000000948 R14: 0000000000000e26 R15: 0000000000000002
---[ end trace ]---
------------[ cut here ]------------
UBSAN: array-index-out-of-bounds in drivers/input/tablet/aiptek.c:763:30
index 8192 is out of range for type 'const int[34]'
CPU: 0 UID: 0 PID: 1888 Comm: syz.3.469 Not tainted syzkaller #0 a4a563d0c71b2f3eba821a1af94cbf4bdc8174ca
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 07/16/2026
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:arch_stack_walk+0x12c/0x170 arch/x86/kernel/stacktrace.c:27
Code: 4c 89 ff e8 66 87 06 00 48 85 c0 74 32 48 89 df 48 89 c6 4d 89 f3 41 ba 60 a3 fb e6 45 03 53 f1 74 02 0f 0b 2e e8 d0 04 c2 1e <84> c0 74 11 4c 89 ff e8 88 88 06 00 83 bd 78 ff ff ff 00 75 c1 65
RSP: 0018:ffffc90012d0f608 EFLAGS: 00000282
RAX: 0000000000000001 RBX: ffffc90012d0f6c0 RCX: 00000000025a1e00
RDX: dffffc0000000000 RSI: ffffffff81dbe2c8 RDI: ffffc90012d0f6c0
RBP: ffffc90012d0f690 R08: ffffc90012d0f6d0 R09: ffffc90012d0f6c8
R10: 0000000000000003 R11: ffffffff81759ed0 R12: ffff888120f8cc00
R13: 0000000000000000 R14: ffffffff81759ed0 R15: ffffc90012d0f608
stack_trace_save+0xaa/0x100 kernel/stacktrace.c:122
kasan_save_stack mm/kasan/common.c:49 [inline]
kasan_save_track+0x3e/0x80 mm/kasan/common.c:70
kasan_save_free_info+0x44/0x50 mm/kasan/generic.c:579
poison_slab_object mm/kasan/common.c:249 [inline]
__kasan_slab_free+0x5f/0x80 mm/kasan/common.c:266
kasan_slab_free include/linux/kasan.h:234 [inline]
slab_free_hook mm/slub.c:2445 [inline]
slab_free mm/slub.c:4714 [inline]
kfree+0x158/0x440 mm/slub.c:4875
io_clean_op+0x3ce/0x460 io_uring/io_uring.c:412
io_free_batch_list io_uring/io_uring.c:1445 [inline]
__io_submit_flush_completions+0xc5e/0xdb0 io_uring/io_uring.c:1481
io_submit_flush_completions io_uring/io_uring.h:150 [inline]
ctx_flush_and_put+0xf3/0x240 io_uring/io_uring.c:1028
io_handle_tw_list+0x2ea/0x330 io_uring/io_uring.c:1068
tctx_task_work_run+0xa4/0x290 io_uring/io_uring.c:1129
tctx_task_work+0x41/0x80 io_uring/io_uring.c:1147
task_work_run+0x1e8/0x260 kernel/task_work.c:246
get_signal+0x12b3/0x1490 kernel/signal.c:2706
arch_do_signal_or_restart+0xbc/0x700 arch/x86/kernel/signal.c:337
exit_to_user_mode_loop kernel/entry/common.c:111 [inline]
exit_to_user_mode_prepare include/linux/entry-common.h:328 [inline]
__syscall_exit_to_user_mode_work kernel/entry/common.c:207 [inline]
syscall_exit_to_user_mode+0x57/0xb0 kernel/entry/common.c:218
do_syscall_64+0x63/0xf0 arch/x86/entry/common.c:84
entry_SYSCALL_64_after_hwframe+0x76/0x7e
RIP: 0033:0x7f981299de99
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:00007f9813918f38 EFLAGS: 00000246 ORIG_RAX: 00000000000001aa
RAX: 0000000000000001 RBX: 0000200000000340 RCX: 00007f981299de99
RDX: 0000000000000000 RSI: 0000000000000001 RDI: 000000000000000c
RBP: 000000000000048f R08: 0000000000000000 R09: 0000000000000008
R10: 0000000000000000 R11: 0000000000000246 R12: 0000200000000940
R13: 0000200000000948 R14: 0000000000000e26 R15: 0000000000000002
---[ end trace ]---
aiptek 3-1:0.0: aiptek_irq - usb_submit_urb failed with result -19
----------------
Code disassembly (best guess):
0: 4c 89 ff mov %r15,%rdi
3: e8 66 87 06 00 call 0x6876e
8: 48 85 c0 test %rax,%rax
b: 74 32 je 0x3f
d: 48 89 df mov %rbx,%rdi
10: 48 89 c6 mov %rax,%rsi
13: 4d 89 f3 mov %r14,%r11
16: 41 ba 60 a3 fb e6 mov $0xe6fba360,%r10d
1c: 45 03 53 f1 add -0xf(%r11),%r10d
20: 74 02 je 0x24
22: 0f 0b ud2
24: 2e e8 d0 04 c2 1e cs call 0x1ec204fa
* 2a: 84 c0 test %al,%al <-- trapping instruction
2c: 74 11 je 0x3f
2e: 4c 89 ff mov %r15,%rdi
31: e8 88 88 06 00 call 0x688be
36: 83 bd 78 ff ff ff 00 cmpl $0x0,-0x88(%rbp)
3d: 75 c1 jne 0x0
3f: 65 gs