================================================================================
UBSAN: array-index-out-of-bounds in drivers/input/tablet/aiptek.c:741:31
index 13324 is out of range for type 'const int[34]'
CPU: 0 PID: 314 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+0x21/0x24 lib/dump_stack.c:88
 dump_stack_lvl+0x110/0x170 lib/dump_stack.c:106
 dump_stack+0x15/0x24 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+0x360/0x520 drivers/usb/core/hcd.c:1675
 usb_hcd_giveback_urb+0x11f/0x3e0 drivers/usb/core/hcd.c:1758
 dummy_timer+0xa25/0x3270 drivers/usb/gadget/udc/dummy_hcd.c:2004
 __run_hrtimer kernel/time/hrtimer.c:1685 [inline]
 __hrtimer_run_queues+0x398/0x890 kernel/time/hrtimer.c:1749
 hrtimer_run_softirq+0x19b/0x260 kernel/time/hrtimer.c:1766
 handle_softirqs+0x1d7/0x600 kernel/softirq.c:642
 __do_softirq kernel/softirq.c:680 [inline]
 invoke_softirq kernel/softirq.c:497 [inline]
 __irq_exit_rcu+0x52/0xf0 kernel/softirq.c:729
 irq_exit_rcu+0x9/0x10 kernel/softirq.c:741
 instr_sysvec_apic_timer_interrupt arch/x86/kernel/apic/apic.c:1118 [inline]
 sysvec_apic_timer_interrupt+0xa9/0xc0 arch/x86/kernel/apic/apic.c:1118
 </IRQ>
 <TASK>
 asm_sysvec_apic_timer_interrupt+0x1b/0x20 arch/x86/include/asm/idtentry.h:691
RIP: 0010:__sanitizer_cov_trace_switch+0x17/0xe0 kernel/kcov.c:332
Code: 20 5d c3 90 90 90 90 90 90 90 90 90 90 90 b8 00 1e 12 56 48 8b 46 08 48 8d 48 ff 48 89 c2 48 31 ca 48 39 ca 0f 86 c7 00 00 00 <f3> 48 0f bc c8 48 83 c1 fd 48 83 f9 03 0f 87 b4 00 00 00 48 8b 06
RSP: 0018:ffffc9000dc8f910 EFLAGS: 00000202
RAX: 0000000000000020 RBX: ffff888117df4880 RCX: 000000000000001f
RDX: 000000000000003f RSI: ffffffff8724b720 RDI: 0000000000000000
RBP: ffffc9000dc8f948 R08: 0000000000000800 R09: 0000000000000001
R10: ffff8881f5a00000 R11: 0000000004066b4d R12: 0000000000000000
R13: dffffc0000000000 R14: ffff88810f3ca650 R15: ffff88811e552de0
 shmem_create+0x2c/0x40 mm/shmem.c:3010
 lookup_open fs/namei.c:3489 [inline]
 open_last_lookups fs/namei.c:3557 [inline]
 path_openat+0x15b6/0x2f30 fs/namei.c:3787
 do_filp_open+0x1ee/0x420 fs/namei.c:3817
 do_sys_openat2+0x15e/0x820 fs/open.c:1343
 do_sys_open fs/open.c:1359 [inline]
 __do_sys_openat fs/open.c:1375 [inline]
 __se_sys_openat fs/open.c:1370 [inline]
 __x64_sys_openat+0x136/0x160 fs/open.c:1370
 x64_sys_call+0x783/0x9a0 arch/x86/include/generated/asm/syscalls_64.h:258
 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: 0033:0x7fbf68aa7407
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:00007ffd5038b130 EFLAGS: 00000202 ORIG_RAX: 0000000000000101
RAX: ffffffffffffffda RBX: 00007fbf691fb880 RCX: 00007fbf68aa7407
RDX: 0000000000080241 RSI: 00007ffd5038b690 RDI: ffffffffffffff9c
RBP: 0000000000000004 R08: 0000000000000000 R09: 0000000000000000
R10: 00000000000001b6 R11: 0000000000000202 R12: 00005632c74b9dfc
R13: 00005632c74b9dfc R14: 0000000000000001 R15: 00005632c74d4140
 </TASK>
================================================================================
==================================================================
BUG: KASAN: global-out-of-bounds in aiptek_irq+0x2063/0x29b0 drivers/input/tablet/aiptek.c:741
Read of size 4 at addr ffffffff85e71d30 by task udevd/314

CPU: 0 PID: 314 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+0x21/0x24 lib/dump_stack.c:88
 dump_stack_lvl+0x110/0x170 lib/dump_stack.c:106
 print_address_description+0x71/0x200 mm/kasan/report.c:316
 print_report+0x4a/0x60 mm/kasan/report.c:420
 kasan_report+0x122/0x150 mm/kasan/report.c:524
 __asan_report_load4_noabort+0x14/0x20 mm/kasan/report_generic.c:350
 aiptek_irq+0x2063/0x29b0 drivers/input/tablet/aiptek.c:741
 __usb_hcd_giveback_urb+0x360/0x520 drivers/usb/core/hcd.c:1675
 usb_hcd_giveback_urb+0x11f/0x3e0 drivers/usb/core/hcd.c:1758
 dummy_timer+0xa25/0x3270 drivers/usb/gadget/udc/dummy_hcd.c:2004
 __run_hrtimer kernel/time/hrtimer.c:1685 [inline]
 __hrtimer_run_queues+0x398/0x890 kernel/time/hrtimer.c:1749
 hrtimer_run_softirq+0x19b/0x260 kernel/time/hrtimer.c:1766
 handle_softirqs+0x1d7/0x600 kernel/softirq.c:642
 __do_softirq kernel/softirq.c:680 [inline]
 invoke_softirq kernel/softirq.c:497 [inline]
 __irq_exit_rcu+0x52/0xf0 kernel/softirq.c:729
 irq_exit_rcu+0x9/0x10 kernel/softirq.c:741
 instr_sysvec_apic_timer_interrupt arch/x86/kernel/apic/apic.c:1118 [inline]
 sysvec_apic_timer_interrupt+0xa9/0xc0 arch/x86/kernel/apic/apic.c:1118
 </IRQ>
 <TASK>
 asm_sysvec_apic_timer_interrupt+0x1b/0x20 arch/x86/include/asm/idtentry.h:691
RIP: 0010:__sanitizer_cov_trace_switch+0x17/0xe0 kernel/kcov.c:332
Code: 20 5d c3 90 90 90 90 90 90 90 90 90 90 90 b8 00 1e 12 56 48 8b 46 08 48 8d 48 ff 48 89 c2 48 31 ca 48 39 ca 0f 86 c7 00 00 00 <f3> 48 0f bc c8 48 83 c1 fd 48 83 f9 03 0f 87 b4 00 00 00 48 8b 06
RSP: 0018:ffffc9000dc8f910 EFLAGS: 00000202
RAX: 0000000000000020 RBX: ffff888117df4880 RCX: 000000000000001f
RDX: 000000000000003f RSI: ffffffff8724b720 RDI: 0000000000000000
RBP: ffffc9000dc8f948 R08: 0000000000000800 R09: 0000000000000001
R10: ffff8881f5a00000 R11: 0000000004066b4d R12: 0000000000000000
R13: dffffc0000000000 R14: ffff88810f3ca650 R15: ffff88811e552de0
 shmem_create+0x2c/0x40 mm/shmem.c:3010
 lookup_open fs/namei.c:3489 [inline]
 open_last_lookups fs/namei.c:3557 [inline]
 path_openat+0x15b6/0x2f30 fs/namei.c:3787
 do_filp_open+0x1ee/0x420 fs/namei.c:3817
 do_sys_openat2+0x15e/0x820 fs/open.c:1343
 do_sys_open fs/open.c:1359 [inline]
 __do_sys_openat fs/open.c:1375 [inline]
 __se_sys_openat fs/open.c:1370 [inline]
 __x64_sys_openat+0x136/0x160 fs/open.c:1370
 x64_sys_call+0x783/0x9a0 arch/x86/include/generated/asm/syscalls_64.h:258
 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: 0033:0x7fbf68aa7407
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:00007ffd5038b130 EFLAGS: 00000202 ORIG_RAX: 0000000000000101
RAX: ffffffffffffffda RBX: 00007fbf691fb880 RCX: 00007fbf68aa7407
RDX: 0000000000080241 RSI: 00007ffd5038b690 RDI: ffffffffffffff9c
RBP: 0000000000000004 R08: 0000000000000000 R09: 0000000000000000
R10: 00000000000001b6 R11: 0000000000000202 R12: 00005632c74b9dfc
R13: 00005632c74b9dfc R14: 0000000000000001 R15: 00005632c74d4140
 </TASK>

The buggy address belongs to the variable:
 .str.48+0x10/0x40

The buggy address belongs to the physical page:
page:ffffea0000179c40 refcount:1 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x5e71
flags: 0x1000(reserved|zone=0)
raw: 0000000000001000 ffffea0000179c48 ffffea0000179c48 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:
 ffffffff85e71c00: f9 f9 f9 f9 00 01 f9 f9 04 f9 f9 f9 05 f9 f9 f9
 ffffffff85e71c80: 00 03 f9 f9 00 06 f9 f9 00 03 f9 f9 00 07 f9 f9
>ffffffff85e71d00: 00 01 f9 f9 00 00 02 f9 f9 f9 f9 f9 05 f9 f9 f9
                                     ^
 ffffffff85e71d80: 00 00 02 f9 f9 f9 f9 f9 00 06 f9 f9 00 03 f9 f9
 ffffffff85e71e00: 00 03 f9 f9 04 f9 f9 f9 00 00 00 00 00 06 f9 f9
==================================================================
================================================================================
UBSAN: array-index-out-of-bounds in drivers/input/tablet/aiptek.c:763:30
index 13325 is out of range for type 'const int[34]'
CPU: 0 PID: 314 Comm: udevd Tainted: G    B              syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 05/09/2026
Call Trace:
 <IRQ>
 __dump_stack+0x21/0x24 lib/dump_stack.c:88
 dump_stack_lvl+0x110/0x170 lib/dump_stack.c:106
 dump_stack+0x15/0x24 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+0x360/0x520 drivers/usb/core/hcd.c:1675
 usb_hcd_giveback_urb+0x11f/0x3e0 drivers/usb/core/hcd.c:1758
 dummy_timer+0xa25/0x3270 drivers/usb/gadget/udc/dummy_hcd.c:2004
 __run_hrtimer kernel/time/hrtimer.c:1685 [inline]
 __hrtimer_run_queues+0x398/0x890 kernel/time/hrtimer.c:1749
 hrtimer_run_softirq+0x19b/0x260 kernel/time/hrtimer.c:1766
 handle_softirqs+0x1d7/0x600 kernel/softirq.c:642
 __do_softirq kernel/softirq.c:680 [inline]
 invoke_softirq kernel/softirq.c:497 [inline]
 __irq_exit_rcu+0x52/0xf0 kernel/softirq.c:729
 irq_exit_rcu+0x9/0x10 kernel/softirq.c:741
 instr_sysvec_apic_timer_interrupt arch/x86/kernel/apic/apic.c:1118 [inline]
 sysvec_apic_timer_interrupt+0xa9/0xc0 arch/x86/kernel/apic/apic.c:1118
 </IRQ>
 <TASK>
 asm_sysvec_apic_timer_interrupt+0x1b/0x20 arch/x86/include/asm/idtentry.h:691
RIP: 0010:__sanitizer_cov_trace_switch+0x17/0xe0 kernel/kcov.c:332
Code: 20 5d c3 90 90 90 90 90 90 90 90 90 90 90 b8 00 1e 12 56 48 8b 46 08 48 8d 48 ff 48 89 c2 48 31 ca 48 39 ca 0f 86 c7 00 00 00 <f3> 48 0f bc c8 48 83 c1 fd 48 83 f9 03 0f 87 b4 00 00 00 48 8b 06
RSP: 0018:ffffc9000dc8f910 EFLAGS: 00000202
RAX: 0000000000000020 RBX: ffff888117df4880 RCX: 000000000000001f
RDX: 000000000000003f RSI: ffffffff8724b720 RDI: 0000000000000000
RBP: ffffc9000dc8f948 R08: 0000000000000800 R09: 0000000000000001
R10: ffff8881f5a00000 R11: 0000000004066b4d R12: 0000000000000000
R13: dffffc0000000000 R14: ffff88810f3ca650 R15: ffff88811e552de0
 shmem_create+0x2c/0x40 mm/shmem.c:3010
 lookup_open fs/namei.c:3489 [inline]
 open_last_lookups fs/namei.c:3557 [inline]
 path_openat+0x15b6/0x2f30 fs/namei.c:3787
 do_filp_open+0x1ee/0x420 fs/namei.c:3817
 do_sys_openat2+0x15e/0x820 fs/open.c:1343
 do_sys_open fs/open.c:1359 [inline]
 __do_sys_openat fs/open.c:1375 [inline]
 __se_sys_openat fs/open.c:1370 [inline]
 __x64_sys_openat+0x136/0x160 fs/open.c:1370
 x64_sys_call+0x783/0x9a0 arch/x86/include/generated/asm/syscalls_64.h:258
 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: 0033:0x7fbf68aa7407
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:00007ffd5038b130 EFLAGS: 00000202 ORIG_RAX: 0000000000000101
RAX: ffffffffffffffda RBX: 00007fbf691fb880 RCX: 00007fbf68aa7407
RDX: 0000000000080241 RSI: 00007ffd5038b690 RDI: ffffffffffffff9c
RBP: 0000000000000004 R08: 0000000000000000 R09: 0000000000000000
R10: 00000000000001b6 R11: 0000000000000202 R12: 00005632c74b9dfc
R13: 00005632c74b9dfc R14: 0000000000000001 R15: 00005632c74d4140
 </TASK>
================================================================================
aiptek 7-1:0.0: aiptek_irq - usb_submit_urb failed with result -19
----------------
Code disassembly (best guess):
   0:	20 5d c3             	and    %bl,-0x3d(%rbp)
   3:	90                   	nop
   4:	90                   	nop
   5:	90                   	nop
   6:	90                   	nop
   7:	90                   	nop
   8:	90                   	nop
   9:	90                   	nop
   a:	90                   	nop
   b:	90                   	nop
   c:	90                   	nop
   d:	90                   	nop
   e:	b8 00 1e 12 56       	mov    $0x56121e00,%eax
  13:	48 8b 46 08          	mov    0x8(%rsi),%rax
  17:	48 8d 48 ff          	lea    -0x1(%rax),%rcx
  1b:	48 89 c2             	mov    %rax,%rdx
  1e:	48 31 ca             	xor    %rcx,%rdx
  21:	48 39 ca             	cmp    %rcx,%rdx
  24:	0f 86 c7 00 00 00    	jbe    0xf1
* 2a:	f3 48 0f bc c8       	tzcnt  %rax,%rcx <-- trapping instruction
  2f:	48 83 c1 fd          	add    $0xfffffffffffffffd,%rcx
  33:	48 83 f9 03          	cmp    $0x3,%rcx
  37:	0f 87 b4 00 00 00    	ja     0xf1
  3d:	48 8b 06             	mov    (%rsi),%rax