================================================================================
UBSAN: array-index-out-of-bounds in drivers/input/tablet/aiptek.c:741:31
index 19545 is out of range for type 'const int[34]'
CPU: 1 PID: 287 Comm: syz-executor Not tainted syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 07/24/2026
Call Trace:
 <IRQ>
 __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
 </IRQ>
 <TASK>
 asm_sysvec_apic_timer_interrupt+0x1b/0x20 arch/x86/include/asm/idtentry.h:676
RIP: 0010:stack_trace_consume_entry+0x13b/0x290 kernel/stacktrace.c:95
Code: 4c 89 f2 48 8b 75 c0 49 89 37 41 8b 18 41 0f b6 44 15 00 84 c0 0f 85 3d 01 00 00 41 3b 19 0f 92 c0 48 83 c4 20 5b 41 5c 41 5d <41> 5e 41 5f 5d c3 44 89 c1 80 e1 07 80 c1 03 38 c1 0f 8c e0 fe ff
RSP: 0018:ffffc90000a87308 EFLAGS: 00000286
RAX: 0000000000000001 RBX: ffffc90000a873e0 RCX: 0000000000150e01
RDX: dffffc0000000000 RSI: ffffffff81b7bb76 RDI: ffffc90000a873e0
RBP: ffffc90000a87318 R08: ffffc90000a873f0 R09: ffffc90000a873e8
R10: 0000000000000006 R11: fffff52000150e71 R12: ffff88811bc3a780
R13: 1ffff110237875a2 R14: ffffc90000a874a0 R15: ffffc90000a874d0
 arch_stack_walk+0xfc/0x140 arch/x86/kernel/stacktrace.c:27
 stack_trace_save+0xa6/0xf0 kernel/stacktrace.c:122
 save_stack+0x121/0x230 mm/page_owner.c:139
 __reset_page_owner+0x35/0x190 mm/page_owner.c:156
 reset_page_owner include/linux/page_owner.h:26 [inline]
 free_pages_prepare mm/page_alloc.c:1474 [inline]
 free_pcp_prepare mm/page_alloc.c:1546 [inline]
 free_unref_page_prepare+0x5fa/0x600 mm/page_alloc.c:3536
 free_unref_page_list+0x138/0x9e0 mm/page_alloc.c:3673
 release_pages+0x1264/0x12c0 mm/swap.c:1015
 __pagevec_release+0x71/0xe0 mm/swap.c:1035
 pagevec_release include/linux/pagevec.h:81 [inline]
 shmem_undo_range+0x564/0x13b0 mm/shmem.c:965
 shmem_truncate_range mm/shmem.c:1064 [inline]
 shmem_evict_inode+0x1dc/0x970 mm/shmem.c:1146
 evict+0x4b6/0x8b0 fs/inode.c:650
 iput_final fs/inode.c:1779 [inline]
 iput+0x651/0x7e0 fs/inode.c:1805
 do_unlinkat+0x380/0x6c0 fs/namei.c:4363
 __do_sys_unlink fs/namei.c:4404 [inline]
 __se_sys_unlink fs/namei.c:4402 [inline]
 __x64_sys_unlink+0x49/0x50 fs/namei.c:4402
 x64_sys_call+0x878/0x9a0 arch/x86/include/generated/asm/syscalls_64.h:88
 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: 0033:0x7f549b3561c7
Code: 73 01 c3 48 c7 c1 e8 ff ff ff f7 d8 64 89 01 48 83 c8 ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 44 00 00 b8 57 00 00 00 0f 05 <48> 3d 00 f0 ff ff 77 01 c3 48 c7 c2 e8 ff ff ff f7 d8 64 89 02 b8
RSP: 002b:00007ffc216932c8 EFLAGS: 00000206 ORIG_RAX: 0000000000000057
RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 00007f549b3561c7
RDX: 00007ffc216932f0 RSI: 00007ffc21693380 RDI: 00007ffc21693380
RBP: 00007ffc21693380 R08: 00007ffc21694380 R09: 00000000ffffffff
R10: 0000000000000100 R11: 0000000000000206 R12: 00007ffc21694410
R13: 00007f549b3ed474 R14: 000000000000e10d R15: 00007ffc21694450
 </TASK>
================================================================================
================================================================================
UBSAN: array-index-out-of-bounds in drivers/input/tablet/aiptek.c:763:30
index 19546 is out of range for type 'const int[34]'
CPU: 1 PID: 287 Comm: syz-executor Not tainted syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 07/24/2026
Call Trace:
 <IRQ>
 __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
 </IRQ>
 <TASK>
 asm_sysvec_apic_timer_interrupt+0x1b/0x20 arch/x86/include/asm/idtentry.h:676
RIP: 0010:stack_trace_consume_entry+0x13b/0x290 kernel/stacktrace.c:95
Code: 4c 89 f2 48 8b 75 c0 49 89 37 41 8b 18 41 0f b6 44 15 00 84 c0 0f 85 3d 01 00 00 41 3b 19 0f 92 c0 48 83 c4 20 5b 41 5c 41 5d <41> 5e 41 5f 5d c3 44 89 c1 80 e1 07 80 c1 03 38 c1 0f 8c e0 fe ff
RSP: 0018:ffffc90000a87308 EFLAGS: 00000286
RAX: 0000000000000001 RBX: ffffc90000a873e0 RCX: 0000000000150e01
RDX: dffffc0000000000 RSI: ffffffff81b7bb76 RDI: ffffc90000a873e0
RBP: ffffc90000a87318 R08: ffffc90000a873f0 R09: ffffc90000a873e8
R10: 0000000000000006 R11: fffff52000150e71 R12: ffff88811bc3a780
R13: 1ffff110237875a2 R14: ffffc90000a874a0 R15: ffffc90000a874d0
 arch_stack_walk+0xfc/0x140 arch/x86/kernel/stacktrace.c:27
 stack_trace_save+0xa6/0xf0 kernel/stacktrace.c:122
 save_stack+0x121/0x230 mm/page_owner.c:139
 __reset_page_owner+0x35/0x190 mm/page_owner.c:156
 reset_page_owner include/linux/page_owner.h:26 [inline]
 free_pages_prepare mm/page_alloc.c:1474 [inline]
 free_pcp_prepare mm/page_alloc.c:1546 [inline]
 free_unref_page_prepare+0x5fa/0x600 mm/page_alloc.c:3536
 free_unref_page_list+0x138/0x9e0 mm/page_alloc.c:3673
 release_pages+0x1264/0x12c0 mm/swap.c:1015
 __pagevec_release+0x71/0xe0 mm/swap.c:1035
 pagevec_release include/linux/pagevec.h:81 [inline]
 shmem_undo_range+0x564/0x13b0 mm/shmem.c:965
 shmem_truncate_range mm/shmem.c:1064 [inline]
 shmem_evict_inode+0x1dc/0x970 mm/shmem.c:1146
 evict+0x4b6/0x8b0 fs/inode.c:650
 iput_final fs/inode.c:1779 [inline]
 iput+0x651/0x7e0 fs/inode.c:1805
 do_unlinkat+0x380/0x6c0 fs/namei.c:4363
 __do_sys_unlink fs/namei.c:4404 [inline]
 __se_sys_unlink fs/namei.c:4402 [inline]
 __x64_sys_unlink+0x49/0x50 fs/namei.c:4402
 x64_sys_call+0x878/0x9a0 arch/x86/include/generated/asm/syscalls_64.h:88
 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: 0033:0x7f549b3561c7
Code: 73 01 c3 48 c7 c1 e8 ff ff ff f7 d8 64 89 01 48 83 c8 ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 44 00 00 b8 57 00 00 00 0f 05 <48> 3d 00 f0 ff ff 77 01 c3 48 c7 c2 e8 ff ff ff f7 d8 64 89 02 b8
RSP: 002b:00007ffc216932c8 EFLAGS: 00000206 ORIG_RAX: 0000000000000057
RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 00007f549b3561c7
RDX: 00007ffc216932f0 RSI: 00007ffc21693380 RDI: 00007ffc21693380
RBP: 00007ffc21693380 R08: 00007ffc21694380 R09: 00000000ffffffff
R10: 0000000000000100 R11: 0000000000000206 R12: 00007ffc21694410
R13: 00007f549b3ed474 R14: 000000000000e10d R15: 00007ffc21694450
 </TASK>
================================================================================
aiptek 3-1:0.0: aiptek_irq - usb_submit_urb failed with result -19
----------------
Code disassembly (best guess):
   0:	4c 89 f2             	mov    %r14,%rdx
   3:	48 8b 75 c0          	mov    -0x40(%rbp),%rsi
   7:	49 89 37             	mov    %rsi,(%r15)
   a:	41 8b 18             	mov    (%r8),%ebx
   d:	41 0f b6 44 15 00    	movzbl 0x0(%r13,%rdx,1),%eax
  13:	84 c0                	test   %al,%al
  15:	0f 85 3d 01 00 00    	jne    0x158
  1b:	41 3b 19             	cmp    (%r9),%ebx
  1e:	0f 92 c0             	setb   %al
  21:	48 83 c4 20          	add    $0x20,%rsp
  25:	5b                   	pop    %rbx
  26:	41 5c                	pop    %r12
  28:	41 5d                	pop    %r13
* 2a:	41 5e                	pop    %r14 <-- trapping instruction
  2c:	41 5f                	pop    %r15
  2e:	5d                   	pop    %rbp
  2f:	c3                   	ret
  30:	44 89 c1             	mov    %r8d,%ecx
  33:	80 e1 07             	and    $0x7,%cl
  36:	80 c1 03             	add    $0x3,%cl
  39:	38 c1                	cmp    %al,%cl
  3b:	0f                   	.byte 0xf
  3c:	8c e0                	mov    %fs,%eax
  3e:	fe                   	(bad)
  3f:	ff                   	.byte 0xff