------------[ cut here ]------------
UBSAN: array-index-out-of-bounds in drivers/input/tablet/aiptek.c:741:31
index 51095 is out of range for type 'const int[34]'
CPU: 0 UID: 0 PID: 318 Comm: udevd Not tainted syzkaller #0 471281939cd7bfdfff4c6b6074d5d68627c837ba
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 05/09/2026
Call Trace:
__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+0x20cb/0x2a00 drivers/input/tablet/aiptek.c:741
__usb_hcd_giveback_urb+0x375/0x540 drivers/usb/core/hcd.c:1648
usb_hcd_giveback_urb+0x11b/0x410 drivers/usb/core/hcd.c:1732
dummy_timer+0x816/0x4300 drivers/usb/gadget/udc/dummy_hcd.c:2003
__run_hrtimer kernel/time/hrtimer.c:1753 [inline]
__hrtimer_run_queues+0x3ab/0x8e0 kernel/time/hrtimer.c:1817
hrtimer_run_softirq+0x159/0x560 kernel/time/hrtimer.c:1834
handle_softirqs+0x1aa/0x630 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
asm_sysvec_apic_timer_interrupt+0x1f/0x30 arch/x86/include/asm/idtentry.h:702
RIP: 0010:d_revalidate fs/namei.c:867 [inline]
RIP: 0010:lookup_fast+0xa2/0x530 fs/namei.c:1701
Code: 89 df e8 11 f3 01 00 48 85 c0 0f 84 04 01 00 00 49 89 c7 48 89 c3 48 c1 e8 03 42 0f b6 04 28 84 c0 0f 85 0b 03 00 00 44 8b 23 <44> 89 e6 83 e6 04 31 ff e8 d1 ab 97 ff 41 83 e4 04 0f 85 fa 00 00
RSP: 0018:ffffc9000b7bf850 EFLAGS: 00000246
RAX: 0000000000000000 RBX: ffff888113b3b770 RCX: dffffc0000000000
RDX: 0000000000000000 RSI: 7265626d754e6563 RDI: ffff888107fa0000
RBP: ffffc9000b7bf898 R08: ffff888113b3b7b0 R09: 1ffff110227676f6
R10: dffffc0000000000 R11: ffffed10227676f7 R12: 0000000000080044
R13: dffffc0000000000 R14: 1ffff920016f7f3f R15: ffff888113b3b770
walk_component+0x5c/0x440 fs/namei.c:2057
lookup_last fs/namei.c:2564 [inline]
path_lookupat+0x180/0x4a0 fs/namei.c:2588
filename_lookup+0x228/0x580 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: 0033:0x7f6308511b0a
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:00007ffe0f5f62a8 EFLAGS: 00000206 ORIG_RAX: 0000000000000106
RAX: ffffffffffffffda RBX: 000055a4fad41c06 RCX: 00007f6308511b0a
RDX: 00007ffe0f5f62b0 RSI: 00007ffe0f5f6340 RDI: 00000000ffffff9c
RBP: 000055a4fad28560 R08: 000055a4fad41c06 R09: 0000000000000000
R10: 0000000000000100 R11: 0000000000000206 R12: 000055a4fad28650
R13: 00007ffe0f5f6340 R14: 000055a4c4f87ca4 R15: 000055a4c4f87bcc
---[ end trace ]---
==================================================================
BUG: KASAN: global-out-of-bounds in aiptek_irq+0x20e9/0x2a00 drivers/input/tablet/aiptek.c:741
Read of size 4 at addr ffffffff8674091c by task udevd/318
CPU: 0 UID: 0 PID: 318 Comm: udevd Not tainted syzkaller #0 471281939cd7bfdfff4c6b6074d5d68627c837ba
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 05/09/2026
Call Trace:
__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+0x20e9/0x2a00 drivers/input/tablet/aiptek.c:741
__usb_hcd_giveback_urb+0x375/0x540 drivers/usb/core/hcd.c:1648
usb_hcd_giveback_urb+0x11b/0x410 drivers/usb/core/hcd.c:1732
dummy_timer+0x816/0x4300 drivers/usb/gadget/udc/dummy_hcd.c:2003
__run_hrtimer kernel/time/hrtimer.c:1753 [inline]
__hrtimer_run_queues+0x3ab/0x8e0 kernel/time/hrtimer.c:1817
hrtimer_run_softirq+0x159/0x560 kernel/time/hrtimer.c:1834
handle_softirqs+0x1aa/0x630 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
asm_sysvec_apic_timer_interrupt+0x1f/0x30 arch/x86/include/asm/idtentry.h:702
RIP: 0010:d_revalidate fs/namei.c:867 [inline]
RIP: 0010:lookup_fast+0xa2/0x530 fs/namei.c:1701
Code: 89 df e8 11 f3 01 00 48 85 c0 0f 84 04 01 00 00 49 89 c7 48 89 c3 48 c1 e8 03 42 0f b6 04 28 84 c0 0f 85 0b 03 00 00 44 8b 23 <44> 89 e6 83 e6 04 31 ff e8 d1 ab 97 ff 41 83 e4 04 0f 85 fa 00 00
RSP: 0018:ffffc9000b7bf850 EFLAGS: 00000246
RAX: 0000000000000000 RBX: ffff888113b3b770 RCX: dffffc0000000000
RDX: 0000000000000000 RSI: 7265626d754e6563 RDI: ffff888107fa0000
RBP: ffffc9000b7bf898 R08: ffff888113b3b7b0 R09: 1ffff110227676f6
R10: dffffc0000000000 R11: ffffed10227676f7 R12: 0000000000080044
R13: dffffc0000000000 R14: 1ffff920016f7f3f R15: ffff888113b3b770
walk_component+0x5c/0x440 fs/namei.c:2057
lookup_last fs/namei.c:2564 [inline]
path_lookupat+0x180/0x4a0 fs/namei.c:2588
filename_lookup+0x228/0x580 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: 0033:0x7f6308511b0a
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:00007ffe0f5f62a8 EFLAGS: 00000206 ORIG_RAX: 0000000000000106
RAX: ffffffffffffffda RBX: 000055a4fad41c06 RCX: 00007f6308511b0a
RDX: 00007ffe0f5f62b0 RSI: 00007ffe0f5f6340 RDI: 00000000ffffff9c
RBP: 000055a4fad28560 R08: 000055a4fad41c06 R09: 0000000000000000
R10: 0000000000000100 R11: 0000000000000206 R12: 000055a4fad28650
R13: 00007ffe0f5f6340 R14: 000055a4c4f87ca4 R15: 000055a4c4f87bcc
The buggy address belongs to the variable:
.str.29+0x5c/0x60
The buggy address belongs to the physical page:
page: refcount:1 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x6740
flags: 0x4000(reserved|zone=0)
raw: 0000000000004000 ffffea000019d008 ffffea000019d008 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:
ffffffff86740800: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
ffffffff86740880: 00 f9 f9 f9 f9 f9 f9 f9 00 00 00 00 01 f9 f9 f9
>ffffffff86740900: f9 f9 f9 f9 00 00 00 00 00 01 f9 f9 f9 f9 f9 f9
^
ffffffff86740980: 00 00 00 04 f9 f9 f9 f9 00 00 00 00 00 00 00 00
ffffffff86740a00: 00 00 f9 f9 00 00 00 00 00 00 03 f9 f9 f9 f9 f9
==================================================================
------------[ cut here ]------------
UBSAN: array-index-out-of-bounds in drivers/input/tablet/aiptek.c:763:30
index 51096 is out of range for type 'const int[34]'
CPU: 0 UID: 0 PID: 318 Comm: udevd Tainted: G B syzkaller #0 471281939cd7bfdfff4c6b6074d5d68627c837ba
Tainted: [B]=BAD_PAGE
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 05/09/2026
Call Trace:
__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+0x1f85/0x2a00 drivers/input/tablet/aiptek.c:763
__usb_hcd_giveback_urb+0x375/0x540 drivers/usb/core/hcd.c:1648
usb_hcd_giveback_urb+0x11b/0x410 drivers/usb/core/hcd.c:1732
dummy_timer+0x816/0x4300 drivers/usb/gadget/udc/dummy_hcd.c:2003
__run_hrtimer kernel/time/hrtimer.c:1753 [inline]
__hrtimer_run_queues+0x3ab/0x8e0 kernel/time/hrtimer.c:1817
hrtimer_run_softirq+0x159/0x560 kernel/time/hrtimer.c:1834
handle_softirqs+0x1aa/0x630 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
asm_sysvec_apic_timer_interrupt+0x1f/0x30 arch/x86/include/asm/idtentry.h:702
RIP: 0010:d_revalidate fs/namei.c:867 [inline]
RIP: 0010:lookup_fast+0xa2/0x530 fs/namei.c:1701
Code: 89 df e8 11 f3 01 00 48 85 c0 0f 84 04 01 00 00 49 89 c7 48 89 c3 48 c1 e8 03 42 0f b6 04 28 84 c0 0f 85 0b 03 00 00 44 8b 23 <44> 89 e6 83 e6 04 31 ff e8 d1 ab 97 ff 41 83 e4 04 0f 85 fa 00 00
RSP: 0018:ffffc9000b7bf850 EFLAGS: 00000246
RAX: 0000000000000000 RBX: ffff888113b3b770 RCX: dffffc0000000000
RDX: 0000000000000000 RSI: 7265626d754e6563 RDI: ffff888107fa0000
RBP: ffffc9000b7bf898 R08: ffff888113b3b7b0 R09: 1ffff110227676f6
R10: dffffc0000000000 R11: ffffed10227676f7 R12: 0000000000080044
R13: dffffc0000000000 R14: 1ffff920016f7f3f R15: ffff888113b3b770
walk_component+0x5c/0x440 fs/namei.c:2057
lookup_last fs/namei.c:2564 [inline]
path_lookupat+0x180/0x4a0 fs/namei.c:2588
filename_lookup+0x228/0x580 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: 0033:0x7f6308511b0a
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:00007ffe0f5f62a8 EFLAGS: 00000206 ORIG_RAX: 0000000000000106
RAX: ffffffffffffffda RBX: 000055a4fad41c06 RCX: 00007f6308511b0a
RDX: 00007ffe0f5f62b0 RSI: 00007ffe0f5f6340 RDI: 00000000ffffff9c
RBP: 000055a4fad28560 R08: 000055a4fad41c06 R09: 0000000000000000
R10: 0000000000000100 R11: 0000000000000206 R12: 000055a4fad28650
R13: 00007ffe0f5f6340 R14: 000055a4c4f87ca4 R15: 000055a4c4f87bcc
---[ end trace ]---
aiptek 3-1:0.0: aiptek_irq - usb_submit_urb failed with result -19
----------------
Code disassembly (best guess):
0: 89 df mov %ebx,%edi
2: e8 11 f3 01 00 call 0x1f318
7: 48 85 c0 test %rax,%rax
a: 0f 84 04 01 00 00 je 0x114
10: 49 89 c7 mov %rax,%r15
13: 48 89 c3 mov %rax,%rbx
16: 48 c1 e8 03 shr $0x3,%rax
1a: 42 0f b6 04 28 movzbl (%rax,%r13,1),%eax
1f: 84 c0 test %al,%al
21: 0f 85 0b 03 00 00 jne 0x332
27: 44 8b 23 mov (%rbx),%r12d
* 2a: 44 89 e6 mov %r12d,%esi <-- trapping instruction
2d: 83 e6 04 and $0x4,%esi
30: 31 ff xor %edi,%edi
32: e8 d1 ab 97 ff call 0xff97ac08
37: 41 83 e4 04 and $0x4,%r12d
3b: 0f .byte 0xf
3c: 85 fa test %edi,%edx