================================================================================
UBSAN: array-index-out-of-bounds in drivers/input/tablet/aiptek.c:741:31
index 547 is out of range for type 'const int[34]'
CPU: 1 PID: 5143 Comm: udevd Not tainted syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 05/09/2026
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+0x1ea9/0x28f0 drivers/input/tablet/aiptek.c:741
 __usb_hcd_giveback_urb+0x35f/0x520 drivers/usb/core/hcd.c:1650
 dummy_timer+0x8de/0x3320 drivers/usb/gadget/udc/dummy_hcd.c:2003
 __run_hrtimer kernel/time/hrtimer.c:1754 [inline]
 __hrtimer_run_queues+0x520/0xc40 kernel/time/hrtimer.c:1818
 hrtimer_run_softirq+0x187/0x2b0 kernel/time/hrtimer.c:1835
 handle_softirqs+0x280/0x820 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:unwind_next_frame+0x858/0x2970 arch/x86/kernel/unwind_orc.c:517
Code: 9e eb 4b 00 49 89 df e9 b1 05 00 00 41 83 fe 04 0f 84 6c 01 00 00 41 83 fe 05 0f 85 f6 02 00 00 e8 7d eb 4b 00 48 8b 44 24 68 <42> 80 3c 28 00 48 8b 5c 24 60 74 08 48 89 df e8 84 2b a4 00 48 8b
RSP: 0018:ffffc900032478b8 EFLAGS: 00000293
RAX: 1ffff92000648f38 RBX: ffffffff8f1b508c RCX: ffff88807c910000
RDX: 0000000000000000 RSI: ffffffff8cfa0820 RDI: 0000000000000005
RBP: ffffc900032479d8 R08: ffff88807c910000 R09: 0000000000000008
R10: 0000000000000009 R11: 0000000000000000 R12: ffffc90003247988
R13: dffffc0000000000 R14: 0000000000000005 R15: ffffffff8f1b5090
 arch_stack_walk+0x144/0x190 arch/x86/kernel/stacktrace.c:25
 stack_trace_save+0xaa/0x100 kernel/stacktrace.c:122
 kasan_save_stack mm/kasan/common.c:46 [inline]
 kasan_set_track+0x4e/0x70 mm/kasan/common.c:53
 kasan_save_free_info+0x2e/0x50 mm/kasan/generic.c:522
 ____kasan_slab_free+0x126/0x1e0 mm/kasan/common.c:237
 kasan_slab_free include/linux/kasan.h:164 [inline]
 slab_free_hook mm/slub.c:1811 [inline]
 slab_free_freelist_hook+0x130/0x1a0 mm/slub.c:1837
 slab_free mm/slub.c:3830 [inline]
 kmem_cache_free+0xf8/0x270 mm/slub.c:3852
 do_sys_openat2+0x170/0x1d0 fs/open.c:1429
 do_sys_open fs/open.c:1436 [inline]
 __do_sys_openat fs/open.c:1452 [inline]
 __se_sys_openat fs/open.c:1447 [inline]
 __x64_sys_openat+0x139/0x160 fs/open.c:1447
 do_syscall_x64 arch/x86/entry/common.c:46 [inline]
 do_syscall_64+0x55/0xb0 arch/x86/entry/common.c:76
 entry_SYSCALL_64_after_hwframe+0x68/0xd2
RIP: 0033:0x7f3d76ea7407
Code: 48 89 fa 4c 89 df e8 38 aa 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:00007ffeea0ed100 EFLAGS: 00000202 ORIG_RAX: 0000000000000101
RAX: ffffffffffffffda RBX: 00007f3d77541880 RCX: 00007f3d76ea7407
RDX: 0000000000080000 RSI: 00007ffeea0ed280 RDI: ffffffffffffff9c
RBP: 0000000000000008 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000202 R12: 00005560521667f5
R13: 00005560521667f5 R14: 0000000000000001 R15: 0000000000000000
 </TASK>
================================================================================
----------------
Code disassembly (best guess):
   0:	9e                   	sahf
   1:	eb 4b                	jmp    0x4e
   3:	00 49 89             	add    %cl,-0x77(%rcx)
   6:	df e9                	fucomip %st(1),%st
   8:	b1 05                	mov    $0x5,%cl
   a:	00 00                	add    %al,(%rax)
   c:	41 83 fe 04          	cmp    $0x4,%r14d
  10:	0f 84 6c 01 00 00    	je     0x182
  16:	41 83 fe 05          	cmp    $0x5,%r14d
  1a:	0f 85 f6 02 00 00    	jne    0x316
  20:	e8 7d eb 4b 00       	call   0x4beba2
  25:	48 8b 44 24 68       	mov    0x68(%rsp),%rax
* 2a:	42 80 3c 28 00       	cmpb   $0x0,(%rax,%r13,1) <-- trapping instruction
  2f:	48 8b 5c 24 60       	mov    0x60(%rsp),%rbx
  34:	74 08                	je     0x3e
  36:	48 89 df             	mov    %rbx,%rdi
  39:	e8 84 2b a4 00       	call   0xa42bc2
  3e:	48                   	rex.W
  3f:	8b                   	.byte 0x8b