================================================================================
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: 4283 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_lvl+0x188/0x24e lib/dump_stack.c:106
 ubsan_epilogue+0xa/0x30 lib/ubsan.c:151
 __ubsan_handle_out_of_bounds+0xdf/0xf0 lib/ubsan.c:282
 aiptek_irq+0x1e87/0x28f0 drivers/input/tablet/aiptek.c:741
 __usb_hcd_giveback_urb+0x35d/0x520 drivers/usb/core/hcd.c:1673
 dummy_timer+0xa21/0x3420 drivers/usb/gadget/udc/dummy_hcd.c:2004
 __run_hrtimer kernel/time/hrtimer.c:1751 [inline]
 __hrtimer_run_queues+0x522/0xc90 kernel/time/hrtimer.c:1815
 hrtimer_run_softirq+0x173/0x290 kernel/time/hrtimer.c:1832
 handle_softirqs+0x291/0x910 kernel/softirq.c:596
 __do_softirq kernel/softirq.c:630 [inline]
 invoke_softirq kernel/softirq.c:470 [inline]
 __irq_exit_rcu+0x13b/0x230 kernel/softirq.c:679
 irq_exit_rcu+0x5/0x20 kernel/softirq.c:691
 instr_sysvec_apic_timer_interrupt arch/x86/kernel/apic/apic.c:1118 [inline]
 sysvec_apic_timer_interrupt+0xa0/0xc0 arch/x86/kernel/apic/apic.c:1118
 </IRQ>
 <TASK>
 asm_sysvec_apic_timer_interrupt+0x16/0x20 arch/x86/include/asm/idtentry.h:691
RIP: 0010:rcu_read_unlock_sched include/linux/rcupdate.h:902 [inline]
RIP: 0010:pfn_valid+0x35c/0x420 include/linux/mmzone.h:1867
Code: fa 71 a4 ff 31 ed e8 f3 61 52 08 41 89 c6 31 ff 89 c6 e8 47 75 a4 ff 45 85 f6 74 10 e8 1d 6c 8e ff 84 c0 74 0e e8 d4 71 a4 ff <eb> 58 e8 cd 71 a4 ff eb 51 e8 c6 61 52 08 41 89 c6 31 ff 89 c6 e8
RSP: 0018:ffffc900041674e0 EFLAGS: 00000293
RAX: ffffffff81ddbc4c RBX: ffffffff81ddb9bd RCX: ffff88807d6eda00
RDX: 0000000000000000 RSI: ffffffff8adf5dc0 RDI: ffffffff8adf5d80
RBP: 0000000000000001 R08: dffffc0000000000 R09: 1ffffffff2162048
R10: dffffc0000000000 R11: fffffbfff2162049 R12: dffffc0000000000
R13: 0000000000000008 R14: 0000000000000001 R15: ffff88813fff9160
 page_table_check_set+0x25/0x6d0 mm/page_table_check.c:108
 page_table_check_pte_set include/linux/page_table_check.h:83 [inline]
 set_pte_at arch/x86/include/asm/pgtable.h:1009 [inline]
 copy_present_pte mm/memory.c:1000 [inline]
 copy_pte_range mm/memory.c:1091 [inline]
 copy_pmd_range mm/memory.c:1177 [inline]
 copy_pud_range mm/memory.c:1214 [inline]
 copy_p4d_range mm/memory.c:1238 [inline]
 copy_page_range+0x2586/0x3a60 mm/memory.c:1332
 dup_mmap kernel/fork.c:703 [inline]
 dup_mm kernel/fork.c:1548 [inline]
 copy_mm+0xeb0/0x1680 kernel/fork.c:1597
 copy_process+0x19a6/0x40c0 kernel/fork.c:2358
 kernel_clone+0x24b/0x900 kernel/fork.c:2765
 __do_sys_clone kernel/fork.c:2906 [inline]
 __se_sys_clone kernel/fork.c:2890 [inline]
 __x64_sys_clone+0x1a7/0x220 kernel/fork.c:2890
 do_syscall_x64 arch/x86/entry/common.c:46 [inline]
 do_syscall_64+0x4c/0xa0 arch/x86/entry/common.c:76
 entry_SYSCALL_64_after_hwframe+0x68/0xd2
RIP: 0033:0x7f81925c6b52
Code: 89 e7 e8 71 8b f7 ff 45 31 c0 31 d2 31 f6 64 48 8b 04 25 10 00 00 00 bf 11 00 20 01 4c 8d 90 d0 02 00 00 b8 38 00 00 00 0f 05 <48> 3d 00 f0 ff ff 77 66 89 c5 85 c0 75 3b 64 48 8b 04 25 10 00 00
RSP: 002b:00007fffbd272490 EFLAGS: 00000246 ORIG_RAX: 0000000000000038
RAX: ffffffffffffffda RBX: 00007fffbd272490 RCX: 00007f81925c6b52
RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000001200011
RBP: 00007fffbd27261c R08: 0000000000000000 R09: 0000000000000001
R10: 0000555585b177d0 R11: 0000000000000246 R12: 0000000000000001
R13: 00000000000927c0 R14: 000000000004802e R15: 00007fffbd272670
 </TASK>
================================================================================
----------------
Code disassembly (best guess):
   0:	fa                   	cli
   1:	71 a4                	jno    0xffffffa7
   3:	ff 31                	push   (%rcx)
   5:	ed                   	in     (%dx),%eax
   6:	e8 f3 61 52 08       	call   0x85261fe
   b:	41 89 c6             	mov    %eax,%r14d
   e:	31 ff                	xor    %edi,%edi
  10:	89 c6                	mov    %eax,%esi
  12:	e8 47 75 a4 ff       	call   0xffa4755e
  17:	45 85 f6             	test   %r14d,%r14d
  1a:	74 10                	je     0x2c
  1c:	e8 1d 6c 8e ff       	call   0xff8e6c3e
  21:	84 c0                	test   %al,%al
  23:	74 0e                	je     0x33
  25:	e8 d4 71 a4 ff       	call   0xffa471fe
* 2a:	eb 58                	jmp    0x84 <-- trapping instruction
  2c:	e8 cd 71 a4 ff       	call   0xffa471fe
  31:	eb 51                	jmp    0x84
  33:	e8 c6 61 52 08       	call   0x85261fe
  38:	41 89 c6             	mov    %eax,%r14d
  3b:	31 ff                	xor    %edi,%edi
  3d:	89 c6                	mov    %eax,%esi
  3f:	e8                   	.byte 0xe8