================================================================================
UBSAN: array-index-out-of-bounds in drivers/input/tablet/aiptek.c:724:31
index 63 is out of range for type 'const int[34]'
CPU: 0 PID: 4450 Comm: kworker/0:17 Not tainted syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 05/09/2026
Workqueue: usb_hub_wq hub_event
Call Trace:
dump_stack_lvl+0x188/0x24e lib/dump_stack.c:106
ubsan_epilogue+0xa/0x30 lib/ubsan.c:151
__ubsan_handle_out_of_bounds+0xdf/0xf0 lib/ubsan.c:282
aiptek_irq+0x1f6c/0x28f0 drivers/input/tablet/aiptek.c:724
__usb_hcd_giveback_urb+0x35f/0x520 drivers/usb/core/hcd.c:1675
dummy_timer+0x8d0/0x3330 drivers/usb/gadget/udc/dummy_hcd.c:2004
__run_hrtimer kernel/time/hrtimer.c:1751 [inline]
__hrtimer_run_queues+0x54a/0xd50 kernel/time/hrtimer.c:1815
hrtimer_run_softirq+0x183/0x2a0 kernel/time/hrtimer.c:1832
handle_softirqs+0x2a1/0x930 kernel/softirq.c:596
__do_softirq kernel/softirq.c:630 [inline]
invoke_softirq kernel/softirq.c:470 [inline]
__irq_exit_rcu+0x13b/0x230 kernel/softirq.c:679
irq_exit_rcu+0x5/0x20 kernel/softirq.c:691
instr_sysvec_apic_timer_interrupt arch/x86/kernel/apic/apic.c:1118 [inline]
sysvec_apic_timer_interrupt+0xa0/0xc0 arch/x86/kernel/apic/apic.c:1118
asm_sysvec_apic_timer_interrupt+0x16/0x20 arch/x86/include/asm/idtentry.h:691
RIP: 0010:unwind_next_frame+0x68d/0x20b0 arch/x86/kernel/unwind_orc.c:475
Code: 48 01 c5 e9 fa 00 00 00 4c 8d 7b 40 4c 89 f8 48 c1 e8 03 42 80 3c 28 00 74 08 4c 89 ff e8 9b 62 9a 00 49 8b 17 4d 8d 7c 24 01 <4c> 89 e0 48 c1 e8 03 42 0f b6 04 28 84 c0 0f 85 cc 15 00 00 4c 89
RSP: 0018:ffffc90004856670 EFLAGS: 00000246
RAX: 1ffff9200090acfd RBX: ffffc900048567a8 RCX: ffffffff8e2ecc4c
RDX: ffffc90004856830 RSI: ffffffff8e2ecc48 RDI: ffffffff81391adf
RBP: ffffffff8e9e0bdc R08: 0000000000000007 R09: ffffc900048567f8
R10: dffffc0000000000 R11: fffff5200090ad01 R12: ffffffff8e9e0bd8
R13: dffffc0000000000 R14: ffffffff8e2ecc48 R15: ffffffff8e9e0bd9
__unwind_start+0x5bb/0x740 arch/x86/kernel/unwind_orc.c:717
unwind_start arch/x86/include/asm/unwind.h:64 [inline]
arch_stack_walk+0xda/0x140 arch/x86/kernel/stacktrace.c:24
stack_trace_save+0xa6/0xf0 kernel/stacktrace.c:122
kasan_save_stack mm/kasan/common.c:46 [inline]
kasan_set_track+0x4b/0x70 mm/kasan/common.c:53
__kasan_slab_alloc+0x6b/0x80 mm/kasan/common.c:329
kasan_slab_alloc include/linux/kasan.h:201 [inline]
slab_post_alloc_hook+0x4b/0x480 mm/slab.h:737
slab_alloc_node mm/slub.c:3359 [inline]
slab_alloc mm/slub.c:3367 [inline]
__kmem_cache_alloc_lru mm/slub.c:3374 [inline]
kmem_cache_alloc+0x123/0x2f0 mm/slub.c:3383
kmem_cache_zalloc include/linux/slab.h:689 [inline]
__kernfs_new_node+0xe1/0x810 fs/kernfs/dir.c:614
kernfs_new_node+0x148/0x250 fs/kernfs/dir.c:690
__kernfs_create_file+0x47/0x2e0 fs/kernfs/file.c:1068
sysfs_add_file_mode_ns+0x234/0x2f0 fs/sysfs/file.c:294
create_files fs/sysfs/group.c:64 [inline]
internal_create_group+0x493/0xd00 fs/sysfs/group.c:148
internal_create_groups fs/sysfs/group.c:188 [inline]
sysfs_create_groups+0x55/0x120 fs/sysfs/group.c:214
really_probe+0x613/0xc70 drivers/base/dd.c:658
__driver_probe_device+0x1ef/0x390 drivers/base/dd.c:805
driver_probe_device+0x4f/0x420 drivers/base/dd.c:835
__device_attach_driver+0x2c6/0x510 drivers/base/dd.c:963
bus_for_each_drv+0x184/0x210 drivers/base/bus.c:429
__device_attach+0x2a8/0x480 drivers/base/dd.c:1035
bus_probe_device+0xbc/0x1e0 drivers/base/bus.c:489
device_add+0xa3a/0x1000 drivers/base/core.c:3712
usb_set_configuration+0x1991/0x1fd0 drivers/usb/core/message.c:2223
usb_generic_driver_probe+0x89/0x150 drivers/usb/core/generic.c:238
usb_probe_device+0x139/0x270 drivers/usb/core/driver.c:293
call_driver_probe drivers/base/dd.c:-1 [inline]
really_probe+0x2aa/0xc70 drivers/base/dd.c:639
__driver_probe_device+0x1ef/0x390 drivers/base/dd.c:805
driver_probe_device+0x4f/0x420 drivers/base/dd.c:835
__device_attach_driver+0x2c6/0x510 drivers/base/dd.c:963
bus_for_each_drv+0x184/0x210 drivers/base/bus.c:429
__device_attach+0x2a8/0x480 drivers/base/dd.c:1035
bus_probe_device+0xbc/0x1e0 drivers/base/bus.c:489
device_add+0xa3a/0x1000 drivers/base/core.c:3712
usb_new_device+0xd66/0x1650 drivers/usb/core/hub.c:2659
hub_port_connect drivers/usb/core/hub.c:5517 [inline]
hub_port_connect_change drivers/usb/core/hub.c:5657 [inline]
port_event drivers/usb/core/hub.c:5817 [inline]
hub_event+0x2dcf/0x5560 drivers/usb/core/hub.c:5899
process_one_work+0x8a2/0x1160 kernel/workqueue.c:2292
process_scheduled_works kernel/workqueue.c:2355 [inline]
worker_thread+0xd27/0x1270 kernel/workqueue.c:2441
kthread+0x29d/0x330 kernel/kthread.c:376
ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:295
================================================================================
----------------
Code disassembly (best guess):
0: 48 01 c5 add %rax,%rbp
3: e9 fa 00 00 00 jmp 0x102
8: 4c 8d 7b 40 lea 0x40(%rbx),%r15
c: 4c 89 f8 mov %r15,%rax
f: 48 c1 e8 03 shr $0x3,%rax
13: 42 80 3c 28 00 cmpb $0x0,(%rax,%r13,1)
18: 74 08 je 0x22
1a: 4c 89 ff mov %r15,%rdi
1d: e8 9b 62 9a 00 call 0x9a62bd
22: 49 8b 17 mov (%r15),%rdx
25: 4d 8d 7c 24 01 lea 0x1(%r12),%r15
* 2a: 4c 89 e0 mov %r12,%rax <-- trapping instruction
2d: 48 c1 e8 03 shr $0x3,%rax
31: 42 0f b6 04 28 movzbl (%rax,%r13,1),%eax
36: 84 c0 test %al,%al
38: 0f 85 cc 15 00 00 jne 0x160a
3e: 4c rex.WR
3f: 89 .byte 0x89