================================================================================
UBSAN: array-index-out-of-bounds in drivers/input/tablet/aiptek.c:741:31
index 21762 is out of range for type 'const int[34]'
CPU: 1 PID: 13351 Comm: syz-executor Tainted: G W syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/07/2026
Call Trace:
__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:1673
usb_hcd_giveback_urb+0x11f/0x3e0 drivers/usb/core/hcd.c:1756
dummy_timer+0xa25/0x3270 drivers/usb/gadget/udc/dummy_hcd.c:2004
__run_hrtimer kernel/time/hrtimer.c:1689 [inline]
__hrtimer_run_queues+0x398/0x8a0 kernel/time/hrtimer.c:1753
hrtimer_run_softirq+0x19b/0x260 kernel/time/hrtimer.c:1770
handle_softirqs+0x1dd/0x5f0 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
asm_sysvec_apic_timer_interrupt+0x1b/0x20 arch/x86/include/asm/idtentry.h:691
RIP: 0010:arch_atomic64_try_cmpxchg arch/x86/include/asm/atomic64_64.h:190 [inline]
RIP: 0010:arch_atomic_long_try_cmpxchg_acquire include/linux/atomic/atomic-long.h:443 [inline]
RIP: 0010:atomic_long_try_cmpxchg_acquire include/linux/atomic/atomic-instrumented.h:1781 [inline]
RIP: 0010:__mutex_trylock_fast kernel/locking/mutex.c:176 [inline]
RIP: 0010:mutex_lock+0x9d/0x1b0 kernel/locking/mutex.c:295
Code: 48 c7 44 24 20 00 00 00 00 be 08 00 00 00 e8 6a 3d b6 fc 4c 89 ff be 08 00 00 00 e8 5d 3d b6 fc 48 8b 44 24 20 f0 49 0f b1 1e <75> 5d 48 c7 c0 c0 b9 00 87 48 c1 e8 03 42 80 3c 20 00 74 0c 48 c7
RSP: 0018:ffffc9000105fd00 EFLAGS: 00000246
RAX: 0000000000000000 RBX: ffff88811f9b0000 RCX: ffffffff8500d3a3
RDX: 0000000000000001 RSI: 0000000000000008 RDI: ffffc9000105fd20
RBP: ffffc9000105fd90 R08: ffffc9000105fd27 R09: 1ffff9200020bfa4
R10: dffffc0000000000 R11: fffff5200020bfa5 R12: dffffc0000000000
R13: 1ffff9200020bfa0 R14: ffff88812a176f48 R15: ffffc9000105fd20
__fdget_pos+0x2cd/0x380 fs/file.c:1068
fdget_pos include/linux/file.h:75 [inline]
__do_sys_getdents64 fs/readdir.c:365 [inline]
__se_sys_getdents64+0xcb/0x250 fs/readdir.c:354
__x64_sys_getdents64+0x7b/0x90 fs/readdir.c:354
x64_sys_call+0x15c/0x9a0 arch/x86/include/generated/asm/syscalls_64.h:218
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: 0033:0x7f1724bc7ef3
Code: c7 c0 e8 ff ff ff 64 c7 00 16 00 00 00 31 c0 eb 9e e8 81 9b fd ff 90 b8 ff ff ff 7f 48 39 c2 48 0f 47 d0 b8 d9 00 00 00 0f 05 <48> 3d 00 f0 ff ff 77 05 c3 0f 1f 40 00 48 c7 c2 e8 ff ff ff f7 d8
RSP: 002b:00007fffa3ceab38 EFLAGS: 00000293 ORIG_RAX: 00000000000000d9
RAX: ffffffffffffffda RBX: 000055558b8a7910 RCX: 00007f1724bc7ef3
RDX: 0000000000008000 RSI: 000055558b8a7940 RDI: 0000000000000005
RBP: 000055558b8a7940 R08: 000055558b8a796b R09: 0000000000000001
R10: 0000000000000000 R11: 0000000000000293 R12: 000055558b8a7914
R13: ffffffffffffffe8 R14: 0000000000000016 R15: 00007fffa3cecde0
================================================================================
==================================================================
BUG: KASAN: global-out-of-bounds in aiptek_irq+0x2063/0x29b0 drivers/input/tablet/aiptek.c:741
Read of size 4 at addr ffffffff85e7b908 by task syz-executor/13351
CPU: 1 PID: 13351 Comm: syz-executor Tainted: G W syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/07/2026
Call Trace:
__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:1673
usb_hcd_giveback_urb+0x11f/0x3e0 drivers/usb/core/hcd.c:1756
dummy_timer+0xa25/0x3270 drivers/usb/gadget/udc/dummy_hcd.c:2004
__run_hrtimer kernel/time/hrtimer.c:1689 [inline]
__hrtimer_run_queues+0x398/0x8a0 kernel/time/hrtimer.c:1753
hrtimer_run_softirq+0x19b/0x260 kernel/time/hrtimer.c:1770
handle_softirqs+0x1dd/0x5f0 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
asm_sysvec_apic_timer_interrupt+0x1b/0x20 arch/x86/include/asm/idtentry.h:691
RIP: 0010:arch_atomic64_try_cmpxchg arch/x86/include/asm/atomic64_64.h:190 [inline]
RIP: 0010:arch_atomic_long_try_cmpxchg_acquire include/linux/atomic/atomic-long.h:443 [inline]
RIP: 0010:atomic_long_try_cmpxchg_acquire include/linux/atomic/atomic-instrumented.h:1781 [inline]
RIP: 0010:__mutex_trylock_fast kernel/locking/mutex.c:176 [inline]
RIP: 0010:mutex_lock+0x9d/0x1b0 kernel/locking/mutex.c:295
Code: 48 c7 44 24 20 00 00 00 00 be 08 00 00 00 e8 6a 3d b6 fc 4c 89 ff be 08 00 00 00 e8 5d 3d b6 fc 48 8b 44 24 20 f0 49 0f b1 1e <75> 5d 48 c7 c0 c0 b9 00 87 48 c1 e8 03 42 80 3c 20 00 74 0c 48 c7
RSP: 0018:ffffc9000105fd00 EFLAGS: 00000246
RAX: 0000000000000000 RBX: ffff88811f9b0000 RCX: ffffffff8500d3a3
RDX: 0000000000000001 RSI: 0000000000000008 RDI: ffffc9000105fd20
RBP: ffffc9000105fd90 R08: ffffc9000105fd27 R09: 1ffff9200020bfa4
R10: dffffc0000000000 R11: fffff5200020bfa5 R12: dffffc0000000000
R13: 1ffff9200020bfa0 R14: ffff88812a176f48 R15: ffffc9000105fd20
__fdget_pos+0x2cd/0x380 fs/file.c:1068
fdget_pos include/linux/file.h:75 [inline]
__do_sys_getdents64 fs/readdir.c:365 [inline]
__se_sys_getdents64+0xcb/0x250 fs/readdir.c:354
__x64_sys_getdents64+0x7b/0x90 fs/readdir.c:354
x64_sys_call+0x15c/0x9a0 arch/x86/include/generated/asm/syscalls_64.h:218
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: 0033:0x7f1724bc7ef3
Code: c7 c0 e8 ff ff ff 64 c7 00 16 00 00 00 31 c0 eb 9e e8 81 9b fd ff 90 b8 ff ff ff 7f 48 39 c2 48 0f 47 d0 b8 d9 00 00 00 0f 05 <48> 3d 00 f0 ff ff 77 05 c3 0f 1f 40 00 48 c7 c2 e8 ff ff ff f7 d8
RSP: 002b:00007fffa3ceab38 EFLAGS: 00000293 ORIG_RAX: 00000000000000d9
RAX: ffffffffffffffda RBX: 000055558b8a7910 RCX: 00007f1724bc7ef3
RDX: 0000000000008000 RSI: 000055558b8a7940 RDI: 0000000000000005
RBP: 000055558b8a7940 R08: 000055558b8a796b R09: 0000000000000001
R10: 0000000000000000 R11: 0000000000000293 R12: 000055558b8a7914
R13: ffffffffffffffe8 R14: 0000000000000016 R15: 00007fffa3cecde0
The buggy address belongs to the variable:
v4l2_dv_timings_presets+0x4288/0x48e0
The buggy address belongs to the physical page:
page:ffffea0000179ec0 refcount:1 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x5e7b
flags: 0x1000(reserved|zone=0)
raw: 0000000000001000 ffffea0000179ec8 ffffea0000179ec8 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:
ffffffff85e7b800: f9 f9 f9 f9 f9 f9 f9 f9 f9 f9 f9 f9 f9 f9 f9 f9
ffffffff85e7b880: f9 f9 f9 f9 f9 f9 f9 f9 f9 f9 f9 f9 f9 f9 f9 f9
>ffffffff85e7b900: f9 f9 f9 f9 f9 f9 f9 f9 f9 f9 f9 f9 f9 f9 f9 f9
^
ffffffff85e7b980: f9 f9 f9 f9 f9 f9 f9 f9 f9 f9 f9 f9 f9 f9 f9 f9
ffffffff85e7ba00: f9 f9 f9 f9 f9 f9 f9 f9 f9 f9 f9 f9 f9 f9 f9 f9
==================================================================
================================================================================
UBSAN: array-index-out-of-bounds in drivers/input/tablet/aiptek.c:763:30
index 21763 is out of range for type 'const int[34]'
CPU: 1 PID: 13351 Comm: syz-executor Tainted: G B W syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/07/2026
Call Trace:
__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:1673
usb_hcd_giveback_urb+0x11f/0x3e0 drivers/usb/core/hcd.c:1756
dummy_timer+0xa25/0x3270 drivers/usb/gadget/udc/dummy_hcd.c:2004
__run_hrtimer kernel/time/hrtimer.c:1689 [inline]
__hrtimer_run_queues+0x398/0x8a0 kernel/time/hrtimer.c:1753
hrtimer_run_softirq+0x19b/0x260 kernel/time/hrtimer.c:1770
handle_softirqs+0x1dd/0x5f0 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
asm_sysvec_apic_timer_interrupt+0x1b/0x20 arch/x86/include/asm/idtentry.h:691
RIP: 0010:arch_atomic64_try_cmpxchg arch/x86/include/asm/atomic64_64.h:190 [inline]
RIP: 0010:arch_atomic_long_try_cmpxchg_acquire include/linux/atomic/atomic-long.h:443 [inline]
RIP: 0010:atomic_long_try_cmpxchg_acquire include/linux/atomic/atomic-instrumented.h:1781 [inline]
RIP: 0010:__mutex_trylock_fast kernel/locking/mutex.c:176 [inline]
RIP: 0010:mutex_lock+0x9d/0x1b0 kernel/locking/mutex.c:295
Code: 48 c7 44 24 20 00 00 00 00 be 08 00 00 00 e8 6a 3d b6 fc 4c 89 ff be 08 00 00 00 e8 5d 3d b6 fc 48 8b 44 24 20 f0 49 0f b1 1e <75> 5d 48 c7 c0 c0 b9 00 87 48 c1 e8 03 42 80 3c 20 00 74 0c 48 c7
RSP: 0018:ffffc9000105fd00 EFLAGS: 00000246
RAX: 0000000000000000 RBX: ffff88811f9b0000 RCX: ffffffff8500d3a3
RDX: 0000000000000001 RSI: 0000000000000008 RDI: ffffc9000105fd20
RBP: ffffc9000105fd90 R08: ffffc9000105fd27 R09: 1ffff9200020bfa4
R10: dffffc0000000000 R11: fffff5200020bfa5 R12: dffffc0000000000
R13: 1ffff9200020bfa0 R14: ffff88812a176f48 R15: ffffc9000105fd20
__fdget_pos+0x2cd/0x380 fs/file.c:1068
fdget_pos include/linux/file.h:75 [inline]
__do_sys_getdents64 fs/readdir.c:365 [inline]
__se_sys_getdents64+0xcb/0x250 fs/readdir.c:354
__x64_sys_getdents64+0x7b/0x90 fs/readdir.c:354
x64_sys_call+0x15c/0x9a0 arch/x86/include/generated/asm/syscalls_64.h:218
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: 0033:0x7f1724bc7ef3
Code: c7 c0 e8 ff ff ff 64 c7 00 16 00 00 00 31 c0 eb 9e e8 81 9b fd ff 90 b8 ff ff ff 7f 48 39 c2 48 0f 47 d0 b8 d9 00 00 00 0f 05 <48> 3d 00 f0 ff ff 77 05 c3 0f 1f 40 00 48 c7 c2 e8 ff ff ff f7 d8
RSP: 002b:00007fffa3ceab38 EFLAGS: 00000293 ORIG_RAX: 00000000000000d9
RAX: ffffffffffffffda RBX: 000055558b8a7910 RCX: 00007f1724bc7ef3
RDX: 0000000000008000 RSI: 000055558b8a7940 RDI: 0000000000000005
RBP: 000055558b8a7940 R08: 000055558b8a796b R09: 0000000000000001
R10: 0000000000000000 R11: 0000000000000293 R12: 000055558b8a7914
R13: ffffffffffffffe8 R14: 0000000000000016 R15: 00007fffa3cecde0
================================================================================
aiptek 5-1:0.0: aiptek_irq - usb_submit_urb failed with result -19
----------------
Code disassembly (best guess):
0: 48 c7 44 24 20 00 00 movq $0x0,0x20(%rsp)
7: 00 00
9: be 08 00 00 00 mov $0x8,%esi
e: e8 6a 3d b6 fc call 0xfcb63d7d
13: 4c 89 ff mov %r15,%rdi
16: be 08 00 00 00 mov $0x8,%esi
1b: e8 5d 3d b6 fc call 0xfcb63d7d
20: 48 8b 44 24 20 mov 0x20(%rsp),%rax
25: f0 49 0f b1 1e lock cmpxchg %rbx,(%r14)
* 2a: 75 5d jne 0x89 <-- trapping instruction
2c: 48 c7 c0 c0 b9 00 87 mov $0xffffffff8700b9c0,%rax
33: 48 c1 e8 03 shr $0x3,%rax
37: 42 80 3c 20 00 cmpb $0x0,(%rax,%r12,1)
3c: 74 0c je 0x4a
3e: 48 rex.W
3f: c7 .byte 0xc7