================================================================================
UBSAN: array-index-out-of-bounds in drivers/input/tablet/aiptek.c:741:31
index 1407 is out of range for type 'const int[34]'
CPU: 1 PID: 10110 Comm: kworker/u4:27 Not tainted syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 05/09/2026
Workqueue: bat_events batadv_nc_worker
Call Trace:
 <IRQ>
 dump_stack_lvl+0x18c/0x250 lib/dump_stack.c:106
 ubsan_epilogue+0xa/0x30 lib/ubsan.c:217
 __ubsan_handle_out_of_bounds+0xe3/0xf0 lib/ubsan.c:348
 aiptek_irq+0x1eb8/0x2920 drivers/input/tablet/aiptek.c:741
 __usb_hcd_giveback_urb+0x35d/0x520 drivers/usb/core/hcd.c:1648
 dummy_timer+0xa40/0x3420 drivers/usb/gadget/udc/dummy_hcd.c:2003
 __run_hrtimer kernel/time/hrtimer.c:1754 [inline]
 __hrtimer_run_queues+0x525/0xc10 kernel/time/hrtimer.c:1818
 hrtimer_run_softirq+0x177/0x290 kernel/time/hrtimer.c:1835
 handle_softirqs+0x27d/0x820 kernel/softirq.c:578
 __do_softirq kernel/softirq.c:612 [inline]
 invoke_softirq kernel/softirq.c:452 [inline]
 __irq_exit_rcu+0xd3/0x190 kernel/softirq.c:661
 irq_exit_rcu+0x9/0x20 kernel/softirq.c:673
 instr_sysvec_apic_timer_interrupt arch/x86/kernel/apic/apic.c:1088 [inline]
 sysvec_apic_timer_interrupt+0xa4/0xc0 arch/x86/kernel/apic/apic.c:1088
 </IRQ>
 <TASK>
 asm_sysvec_apic_timer_interrupt+0x1a/0x20 arch/x86/include/asm/idtentry.h:687
RIP: 0010:rcu_dynticks_curr_cpu_in_eqs include/linux/context_tracking.h:-1 [inline]
RIP: 0010:rcu_is_watching+0x44/0xb0 kernel/rcu/tree.c:700
Code: 73 60 49 bf 00 00 00 00 00 fc ff df 4c 8d 34 dd 30 aa a7 8c 4c 89 f0 48 c1 e8 03 42 80 3c 38 00 74 08 4c 89 f7 e8 ac a2 6e 00 <48> c7 c3 a8 6b 03 00 49 03 1e 48 89 d8 48 c1 e8 03 42 0f b6 04 38
RSP: 0018:ffffc900049bfb40 EFLAGS: 00000246
RAX: 1ffffffff194f547 RBX: 0000000000000001 RCX: 194829c12fde1500
RDX: ffff888028441e00 RSI: ffffffff8b1c7bc0 RDI: ffffffff8b1c7b80
RBP: 0000000000000000 R08: dffffc0000000000 R09: 1ffffffff22378a0
R10: dffffc0000000000 R11: fffffbfff22378a1 R12: dffffc0000000000
R13: ffffffff8a4b4572 R14: ffffffff8ca7aa38 R15: dffffc0000000000
 rcu_read_unlock include/linux/rcupdate.h:815 [inline]
 batadv_nc_purge_orig_hash net/batman-adv/network-coding.c:412 [inline]
 batadv_nc_worker+0x202/0x600 net/batman-adv/network-coding.c:719
 process_one_work kernel/workqueue.c:2653 [inline]
 process_scheduled_works+0xa60/0x1600 kernel/workqueue.c:2730
 worker_thread+0xa5e/0xfe0 kernel/workqueue.c:2811
 kthread+0x2fa/0x390 kernel/kthread.c:388
 ret_from_fork+0x48/0x80 arch/x86/kernel/process.c:152
 ret_from_fork_asm+0x11/0x20 arch/x86/entry/entry_64.S:293
 </TASK>
================================================================================
----------------
Code disassembly (best guess):
   0:	73 60                	jae    0x62
   2:	49 bf 00 00 00 00 00 	movabs $0xdffffc0000000000,%r15
   9:	fc ff df
   c:	4c 8d 34 dd 30 aa a7 	lea    -0x735855d0(,%rbx,8),%r14
  13:	8c
  14:	4c 89 f0             	mov    %r14,%rax
  17:	48 c1 e8 03          	shr    $0x3,%rax
  1b:	42 80 3c 38 00       	cmpb   $0x0,(%rax,%r15,1)
  20:	74 08                	je     0x2a
  22:	4c 89 f7             	mov    %r14,%rdi
  25:	e8 ac a2 6e 00       	call   0x6ea2d6
* 2a:	48 c7 c3 a8 6b 03 00 	mov    $0x36ba8,%rbx <-- trapping instruction
  31:	49 03 1e             	add    (%r14),%rbx
  34:	48 89 d8             	mov    %rbx,%rax
  37:	48 c1 e8 03          	shr    $0x3,%rax
  3b:	42 0f b6 04 38       	movzbl (%rax,%r15,1),%eax