------------[ cut here ]------------
UBSAN: array-index-out-of-bounds in drivers/input/tablet/aiptek.c:741:31
index 1535 is out of range for type 'const int[34]'
CPU: 1 UID: 0 PID: 345 Comm: udevd Not tainted syzkaller #0 200dea8a17c83f35b0a1e1238c384757fc17b797
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:its_return_thunk+0x0/0x10 arch/x86/lib/retpoline.S:401
Code: cc cc cc cc cc cc cc cc cc cc cc cc cc cc cc cc cc cc cc cc cc cc cc cc cc cc cc cc cc cc cc cc cc cc cc cc cc cc cc cc cc cc <c3> cc 90 90 90 90 90 90 90 90 90 90 90 90 90 90 e9 3b 8a 63 fb cc
RSP: 0018:ffffc9000d90f850 EFLAGS: 00000293
RAX: ffffffff81ef5092 RBX: 0000000000000000 RCX: 0000000000000000
RDX: ffff888108b12600 RSI: 0000000000000000 RDI: 0000000000000000
RBP: ffffc9000d90f900 R08: ffffc9000d90f9cf R09: 0000000000000000
R10: ffffc9000d90f9c0 R11: fffff52001b21f3a R12: 1ffff11023124cc4
R13: ffff888118926620 R14: 0000000000000000 R15: ffffc9000d90f9c0
 path_lookupat+0x2b/0x440 fs/namei.c:2578
 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: 0033:0x7fd8fc511b0a
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:00007ffd10e918f8 EFLAGS: 00000206 ORIG_RAX: 0000000000000106
RAX: ffffffffffffffda RBX: 00007ffd10e92e20 RCX: 00007fd8fc511b0a
RDX: 00007ffd10e91900 RSI: 00007ffd10e91990 RDI: 00000000ffffff9c
RBP: 000055e31ddf7d40 R08: 00007ffd10e92e20 R09: 0000000000000000
R10: 0000000000000100 R11: 0000000000000206 R12: 000055e31ddf7e30
R13: 00007ffd10e91990 R14: 000055e31dde48b0 R15: 00007ffd10e93620
 </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 ffffffff86705f3c by task udevd/345

CPU: 1 UID: 0 PID: 345 Comm: udevd Not tainted syzkaller #0 200dea8a17c83f35b0a1e1238c384757fc17b797
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:its_return_thunk+0x0/0x10 arch/x86/lib/retpoline.S:401
Code: cc cc cc cc cc cc cc cc cc cc cc cc cc cc cc cc cc cc cc cc cc cc cc cc cc cc cc cc cc cc cc cc cc cc cc cc cc cc cc cc cc cc <c3> cc 90 90 90 90 90 90 90 90 90 90 90 90 90 90 e9 3b 8a 63 fb cc
RSP: 0018:ffffc9000d90f850 EFLAGS: 00000293
RAX: ffffffff81ef5092 RBX: 0000000000000000 RCX: 0000000000000000
RDX: ffff888108b12600 RSI: 0000000000000000 RDI: 0000000000000000
RBP: ffffc9000d90f900 R08: ffffc9000d90f9cf R09: 0000000000000000
R10: ffffc9000d90f9c0 R11: fffff52001b21f3a R12: 1ffff11023124cc4
R13: ffff888118926620 R14: 0000000000000000 R15: ffffc9000d90f9c0
 path_lookupat+0x2b/0x440 fs/namei.c:2578
 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: 0033:0x7fd8fc511b0a
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:00007ffd10e918f8 EFLAGS: 00000206 ORIG_RAX: 0000000000000106
RAX: ffffffffffffffda RBX: 00007ffd10e92e20 RCX: 00007fd8fc511b0a
RDX: 00007ffd10e91900 RSI: 00007ffd10e91990 RDI: 00000000ffffff9c
RBP: 000055e31ddf7d40 R08: 00007ffd10e92e20 R09: 0000000000000000
R10: 0000000000000100 R11: 0000000000000206 R12: 000055e31ddf7e30
R13: 00007ffd10e91990 R14: 000055e31dde48b0 R15: 00007ffd10e93620
 </TASK>

The buggy address belongs to the variable:
 .str.9+0x5c/0x60

The buggy address belongs to the physical page:
page: refcount:1 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x6705
flags: 0x4000(reserved|zone=0)
raw: 0000000000004000 ffffea000019c148 ffffea000019c148 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:
 ffffffff86705e00: f9 f9 f9 f9 00 00 00 00 00 00 00 00 00 00 00 00
 ffffffff86705e80: 00 00 00 00 07 f9 f9 f9 f9 f9 f9 f9 00 00 00 00
>ffffffff86705f00: 00 00 07 f9 f9 f9 f9 f9 00 00 00 00 00 00 00 f9
                                        ^
 ffffffff86705f80: f9 f9 f9 f9 00 00 00 00 00 00 00 07 f9 f9 f9 f9
 ffffffff86706000: 00 00 00 00 00 00 00 04 f9 f9 f9 f9 00 01 f9 f9
==================================================================
------------[ cut here ]------------
UBSAN: array-index-out-of-bounds in drivers/input/tablet/aiptek.c:763:30
index 1536 is out of range for type 'const int[34]'
CPU: 1 UID: 0 PID: 345 Comm: udevd Tainted: G    B              syzkaller #0 200dea8a17c83f35b0a1e1238c384757fc17b797
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:its_return_thunk+0x0/0x10 arch/x86/lib/retpoline.S:401
Code: cc cc cc cc cc cc cc cc cc cc cc cc cc cc cc cc cc cc cc cc cc cc cc cc cc cc cc cc cc cc cc cc cc cc cc cc cc cc cc cc cc cc <c3> cc 90 90 90 90 90 90 90 90 90 90 90 90 90 90 e9 3b 8a 63 fb cc
RSP: 0018:ffffc9000d90f850 EFLAGS: 00000293
RAX: ffffffff81ef5092 RBX: 0000000000000000 RCX: 0000000000000000
RDX: ffff888108b12600 RSI: 0000000000000000 RDI: 0000000000000000
RBP: ffffc9000d90f900 R08: ffffc9000d90f9cf R09: 0000000000000000
R10: ffffc9000d90f9c0 R11: fffff52001b21f3a R12: 1ffff11023124cc4
R13: ffff888118926620 R14: 0000000000000000 R15: ffffc9000d90f9c0
 path_lookupat+0x2b/0x440 fs/namei.c:2578
 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: 0033:0x7fd8fc511b0a
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:00007ffd10e918f8 EFLAGS: 00000206 ORIG_RAX: 0000000000000106
RAX: ffffffffffffffda RBX: 00007ffd10e92e20 RCX: 00007fd8fc511b0a
RDX: 00007ffd10e91900 RSI: 00007ffd10e91990 RDI: 00000000ffffff9c
RBP: 000055e31ddf7d40 R08: 00007ffd10e92e20 R09: 0000000000000000
R10: 0000000000000100 R11: 0000000000000206 R12: 000055e31ddf7e30
R13: 00007ffd10e91990 R14: 000055e31dde48b0 R15: 00007ffd10e93620
 </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:	cc                   	int3
   5:	cc                   	int3
   6:	cc                   	int3
   7:	cc                   	int3
   8:	cc                   	int3
   9:	cc                   	int3
   a:	cc                   	int3
   b:	cc                   	int3
   c:	cc                   	int3
   d:	cc                   	int3
   e:	cc                   	int3
   f:	cc                   	int3
  10:	cc                   	int3
  11:	cc                   	int3
  12:	cc                   	int3
  13:	cc                   	int3
  14:	cc                   	int3
  15:	cc                   	int3
  16:	cc                   	int3
  17:	cc                   	int3
  18:	cc                   	int3
  19:	cc                   	int3
  1a:	cc                   	int3
  1b:	cc                   	int3
  1c:	cc                   	int3
  1d:	cc                   	int3
  1e:	cc                   	int3
  1f:	cc                   	int3
  20:	cc                   	int3
  21:	cc                   	int3
  22:	cc                   	int3
  23:	cc                   	int3
  24:	cc                   	int3
  25:	cc                   	int3
  26:	cc                   	int3
  27:	cc                   	int3
  28:	cc                   	int3
  29:	cc                   	int3
* 2a:	c3                   	ret <-- trapping instruction
  2b:	cc                   	int3
  2c:	90                   	nop
  2d:	90                   	nop
  2e:	90                   	nop
  2f:	90                   	nop
  30:	90                   	nop
  31:	90                   	nop
  32:	90                   	nop
  33:	90                   	nop
  34:	90                   	nop
  35:	90                   	nop
  36:	90                   	nop
  37:	90                   	nop
  38:	90                   	nop
  39:	90                   	nop
  3a:	e9 3b 8a 63 fb       	jmp    0xfb638a7a
  3f:	cc                   	int3