------------[ cut here ]------------
UBSAN: array-index-out-of-bounds in drivers/input/tablet/aiptek.c:741:31
index 43 is out of range for type 'const int[34]'
CPU: 1 UID: 0 PID: 324 Comm: udevd Not tainted syzkaller #0 28dc4f15f82f041c91cead1444746a7bfe1433af
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: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
 </IRQ>
 <TASK>
 asm_sysvec_apic_timer_interrupt+0x1f/0x30 arch/x86/include/asm/idtentry.h:702
RIP: 0010:dput+0x0/0x520 fs/dcache.c:846
Code: cc cc cc cc 89 d9 80 e1 07 80 c1 03 38 c1 7c d8 48 89 df e8 b2 09 ef ff eb ce b8 b4 35 a1 ad 90 90 90 90 90 90 90 90 90 90 90 <f3> 0f 1e fa 55 48 89 e5 41 57 41 56 41 55 41 54 53 50 48 89 fb e8
RSP: 0018:ffffc9000b84f738 EFLAGS: 00000246
RAX: 1ffff92001709f39 RBX: ffffc9000b84f9c0 RCX: 0000000000000000
RDX: ffff88810d312600 RSI: 0000000000000000 RDI: ffff888113148660
RBP: ffffc9000b84f828 R08: ffff888101651067 R09: 1ffff110202ca20c
R10: dffffc0000000000 R11: ffffed10202ca20d R12: 1ffff92001709ef4
R13: ffff88811d6ad770 R14: ffff88812ad9da00 R15: dffffc0000000000
 walk_component fs/namei.c:2067 [inline]
 link_path_walk+0x746/0xeb0 fs/namei.c:2426
 path_lookupat+0x8d/0x440 fs/namei.c:2587
 filename_lookup+0x22d/0x5a0 fs/namei.c:2617
 vfs_statx+0x106/0x210 fs/stat.c:312
 vfs_fstatat+0xe5/0x1d0 fs/stat.c:341
 __do_sys_newfstatat fs/stat.c:505 [inline]
 __se_sys_newfstatat+0x127/0x3c0 fs/stat.c:499
 __x64_sys_newfstatat+0x9f/0xc0 fs/stat.c:499
 x64_sys_call+0x1821/0x2ee0 arch/x86/include/generated/asm/syscalls_64.h:263
 do_syscall_x64 arch/x86/entry/common.c:47 [inline]
 do_syscall_64+0x57/0xf0 arch/x86/entry/common.c:78
 entry_SYSCALL_64_after_hwframe+0x76/0x7e
RIP: 0033:0x7f4168d11b0a
Code: 48 8b 15 f1 f2 0d 00 f7 d8 64 89 02 b8 ff ff ff ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 40 00 41 89 ca b8 06 01 00 00 0f 05 <3d> 00 f0 ff ff 77 07 31 c0 c3 0f 1f 40 00 48 8b 15 b9 f2 0d 00 f7
RSP: 002b:00007ffc1784d7d8 EFLAGS: 00000202 ORIG_RAX: 0000000000000106
RAX: ffffffffffffffda RBX: 000056056efe0c06 RCX: 00007f4168d11b0a
RDX: 00007ffc1784d7e0 RSI: 00007ffc1784d870 RDI: 00000000ffffff9c
RBP: 000056056f05dd00 R08: 000056056efe0c06 R09: 0000000000000000
R10: 0000000000000100 R11: 0000000000000202 R12: 000056056f05ddf0
R13: 00007ffc1784d870 R14: 0000560550badca4 R15: 0000560550badbcc
 </TASK>
---[ end trace ]---
==================================================================
BUG: KASAN: global-out-of-bounds in aiptek_irq+0x20ab/0x2a00 drivers/input/tablet/aiptek.c:741
Read of size 4 at addr ffffffff867049ac by task udevd/324

CPU: 1 UID: 0 PID: 324 Comm: udevd Not tainted syzkaller #0 28dc4f15f82f041c91cead1444746a7bfe1433af
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:94
 dump_stack_lvl+0x140/0x1c0 lib/dump_stack.c:120
 print_address_description+0x71/0x210 mm/kasan/report.c:377
 print_report+0x4a/0x70 mm/kasan/report.c:481
 kasan_report+0x162/0x1a0 mm/kasan/report.c:594
 __asan_report_load4_noabort+0x18/0x20 mm/kasan/report_generic.c:380
 aiptek_irq+0x20ab/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
 </IRQ>
 <TASK>
 asm_sysvec_apic_timer_interrupt+0x1f/0x30 arch/x86/include/asm/idtentry.h:702
RIP: 0010:dput+0x0/0x520 fs/dcache.c:846
Code: cc cc cc cc 89 d9 80 e1 07 80 c1 03 38 c1 7c d8 48 89 df e8 b2 09 ef ff eb ce b8 b4 35 a1 ad 90 90 90 90 90 90 90 90 90 90 90 <f3> 0f 1e fa 55 48 89 e5 41 57 41 56 41 55 41 54 53 50 48 89 fb e8
RSP: 0018:ffffc9000b84f738 EFLAGS: 00000246
RAX: 1ffff92001709f39 RBX: ffffc9000b84f9c0 RCX: 0000000000000000
RDX: ffff88810d312600 RSI: 0000000000000000 RDI: ffff888113148660
RBP: ffffc9000b84f828 R08: ffff888101651067 R09: 1ffff110202ca20c
R10: dffffc0000000000 R11: ffffed10202ca20d R12: 1ffff92001709ef4
R13: ffff88811d6ad770 R14: ffff88812ad9da00 R15: dffffc0000000000
 walk_component fs/namei.c:2067 [inline]
 link_path_walk+0x746/0xeb0 fs/namei.c:2426
 path_lookupat+0x8d/0x440 fs/namei.c:2587
 filename_lookup+0x22d/0x5a0 fs/namei.c:2617
 vfs_statx+0x106/0x210 fs/stat.c:312
 vfs_fstatat+0xe5/0x1d0 fs/stat.c:341
 __do_sys_newfstatat fs/stat.c:505 [inline]
 __se_sys_newfstatat+0x127/0x3c0 fs/stat.c:499
 __x64_sys_newfstatat+0x9f/0xc0 fs/stat.c:499
 x64_sys_call+0x1821/0x2ee0 arch/x86/include/generated/asm/syscalls_64.h:263
 do_syscall_x64 arch/x86/entry/common.c:47 [inline]
 do_syscall_64+0x57/0xf0 arch/x86/entry/common.c:78
 entry_SYSCALL_64_after_hwframe+0x76/0x7e
RIP: 0033:0x7f4168d11b0a
Code: 48 8b 15 f1 f2 0d 00 f7 d8 64 89 02 b8 ff ff ff ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 40 00 41 89 ca b8 06 01 00 00 0f 05 <3d> 00 f0 ff ff 77 07 31 c0 c3 0f 1f 40 00 48 8b 15 b9 f2 0d 00 f7
RSP: 002b:00007ffc1784d7d8 EFLAGS: 00000202 ORIG_RAX: 0000000000000106
RAX: ffffffffffffffda RBX: 000056056efe0c06 RCX: 00007f4168d11b0a
RDX: 00007ffc1784d7e0 RSI: 00007ffc1784d870 RDI: 00000000ffffff9c
RBP: 000056056f05dd00 R08: 000056056efe0c06 R09: 0000000000000000
R10: 0000000000000100 R11: 0000000000000202 R12: 000056056f05ddf0
R13: 00007ffc1784d870 R14: 0000560550badca4 R15: 0000560550badbcc
 </TASK>

The buggy address belongs to the variable:
 macroKeyEvents+0xac/0xe0

The buggy address belongs to the physical page:
page: refcount:1 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x6704
flags: 0x4000(reserved|zone=0)
raw: 0000000000004000 ffffea000019c108 ffffea000019c108 0000000000000000
raw: 0000000000000000 0000000000000000 00000001ffffffff 0000000000000000
page dumped because: kasan: bad access detected
page_owner info is not present (never set?)

Memory state around the buggy address:
 ffffffff86704880: f9 f9 f9 f9 00 00 00 00 00 00 04 f9 f9 f9 f9 f9
 ffffffff86704900: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
>ffffffff86704980: 00 f9 f9 f9 f9 f9 f9 f9 00 00 00 00 00 00 00 00
                                  ^
 ffffffff86704a00: 00 00 00 04 f9 f9 f9 f9 00 00 00 00 06 f9 f9 f9
 ffffffff86704a80: f9 f9 f9 f9 00 00 00 00 00 03 f9 f9 f9 f9 f9 f9
==================================================================
------------[ cut here ]------------
UBSAN: array-index-out-of-bounds in drivers/input/tablet/aiptek.c:763:30
index 44 is out of range for type 'const int[34]'
CPU: 1 UID: 0 PID: 324 Comm: udevd Tainted: G    B              syzkaller #0 28dc4f15f82f041c91cead1444746a7bfe1433af
Tainted: [B]=BAD_PAGE
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: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
 </IRQ>
 <TASK>
 asm_sysvec_apic_timer_interrupt+0x1f/0x30 arch/x86/include/asm/idtentry.h:702
RIP: 0010:dput+0x0/0x520 fs/dcache.c:846
Code: cc cc cc cc 89 d9 80 e1 07 80 c1 03 38 c1 7c d8 48 89 df e8 b2 09 ef ff eb ce b8 b4 35 a1 ad 90 90 90 90 90 90 90 90 90 90 90 <f3> 0f 1e fa 55 48 89 e5 41 57 41 56 41 55 41 54 53 50 48 89 fb e8
RSP: 0018:ffffc9000b84f738 EFLAGS: 00000246
RAX: 1ffff92001709f39 RBX: ffffc9000b84f9c0 RCX: 0000000000000000
RDX: ffff88810d312600 RSI: 0000000000000000 RDI: ffff888113148660
RBP: ffffc9000b84f828 R08: ffff888101651067 R09: 1ffff110202ca20c
R10: dffffc0000000000 R11: ffffed10202ca20d R12: 1ffff92001709ef4
R13: ffff88811d6ad770 R14: ffff88812ad9da00 R15: dffffc0000000000
 walk_component fs/namei.c:2067 [inline]
 link_path_walk+0x746/0xeb0 fs/namei.c:2426
 path_lookupat+0x8d/0x440 fs/namei.c:2587
 filename_lookup+0x22d/0x5a0 fs/namei.c:2617
 vfs_statx+0x106/0x210 fs/stat.c:312
 vfs_fstatat+0xe5/0x1d0 fs/stat.c:341
 __do_sys_newfstatat fs/stat.c:505 [inline]
 __se_sys_newfstatat+0x127/0x3c0 fs/stat.c:499
 __x64_sys_newfstatat+0x9f/0xc0 fs/stat.c:499
 x64_sys_call+0x1821/0x2ee0 arch/x86/include/generated/asm/syscalls_64.h:263
 do_syscall_x64 arch/x86/entry/common.c:47 [inline]
 do_syscall_64+0x57/0xf0 arch/x86/entry/common.c:78
 entry_SYSCALL_64_after_hwframe+0x76/0x7e
RIP: 0033:0x7f4168d11b0a
Code: 48 8b 15 f1 f2 0d 00 f7 d8 64 89 02 b8 ff ff ff ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 40 00 41 89 ca b8 06 01 00 00 0f 05 <3d> 00 f0 ff ff 77 07 31 c0 c3 0f 1f 40 00 48 8b 15 b9 f2 0d 00 f7
RSP: 002b:00007ffc1784d7d8 EFLAGS: 00000202 ORIG_RAX: 0000000000000106
RAX: ffffffffffffffda RBX: 000056056efe0c06 RCX: 00007f4168d11b0a
RDX: 00007ffc1784d7e0 RSI: 00007ffc1784d870 RDI: 00000000ffffff9c
RBP: 000056056f05dd00 R08: 000056056efe0c06 R09: 0000000000000000
R10: 0000000000000100 R11: 0000000000000202 R12: 000056056f05ddf0
R13: 00007ffc1784d870 R14: 0000560550badca4 R15: 0000560550badbcc
 </TASK>
---[ end trace ]---
aiptek 2-1:0.0: aiptek_irq - usb_submit_urb failed with result -19
----------------
Code disassembly (best guess):
   0:	cc                   	int3
   1:	cc                   	int3
   2:	cc                   	int3
   3:	cc                   	int3
   4:	89 d9                	mov    %ebx,%ecx
   6:	80 e1 07             	and    $0x7,%cl
   9:	80 c1 03             	add    $0x3,%cl
   c:	38 c1                	cmp    %al,%cl
   e:	7c d8                	jl     0xffffffe8
  10:	48 89 df             	mov    %rbx,%rdi
  13:	e8 b2 09 ef ff       	call   0xffef09ca
  18:	eb ce                	jmp    0xffffffe8
  1a:	b8 b4 35 a1 ad       	mov    $0xada135b4,%eax
  1f:	90                   	nop
  20:	90                   	nop
  21:	90                   	nop
  22:	90                   	nop
  23:	90                   	nop
  24:	90                   	nop
  25:	90                   	nop
  26:	90                   	nop
  27:	90                   	nop
  28:	90                   	nop
  29:	90                   	nop
* 2a:	f3 0f 1e fa          	endbr64 <-- trapping instruction
  2e:	55                   	push   %rbp
  2f:	48 89 e5             	mov    %rsp,%rbp
  32:	41 57                	push   %r15
  34:	41 56                	push   %r14
  36:	41 55                	push   %r13
  38:	41 54                	push   %r12
  3a:	53                   	push   %rbx
  3b:	50                   	push   %rax
  3c:	48 89 fb             	mov    %rdi,%rbx
  3f:	e8                   	.byte 0xe8