vcan0: j1939_tp_rxtimer: 0xffff88805ca91800: abort rx timeout. Force session deactivation
================================================================================
UBSAN: array-index-out-of-bounds in drivers/input/tablet/aiptek.c:741:31
index 2312 is out of range for type 'const int[34]'
CPU: 0 PID: 5433 Comm: dhcpcd Not tainted syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 07/24/2026
Call Trace:
 <IRQ>
 dump_stack_lvl+0x18c/0x250 lib/dump_stack.c:106
 ubsan_epilogue+0xa/0x30 lib/ubsan.c:217
 __ubsan_handle_out_of_bounds+0xe3/0xf0 lib/ubsan.c:348
 aiptek_irq+0x1eb8/0x2920 drivers/input/tablet/aiptek.c:741
 __usb_hcd_giveback_urb+0x35d/0x520 drivers/usb/core/hcd.c:1648
 dummy_timer+0xa58/0x34e0 drivers/usb/gadget/udc/dummy_hcd.c:2017
 __run_hrtimer kernel/time/hrtimer.c:1754 [inline]
 __hrtimer_run_queues+0x525/0xc10 kernel/time/hrtimer.c:1818
 hrtimer_run_softirq+0x177/0x290 kernel/time/hrtimer.c:1835
 handle_softirqs+0x27d/0x820 kernel/softirq.c:578
 __do_softirq kernel/softirq.c:612 [inline]
 invoke_softirq kernel/softirq.c:452 [inline]
 __irq_exit_rcu+0xd3/0x190 kernel/softirq.c:661
 irq_exit_rcu+0x9/0x20 kernel/softirq.c:673
 instr_sysvec_apic_timer_interrupt arch/x86/kernel/apic/apic.c:1088 [inline]
 sysvec_apic_timer_interrupt+0xa4/0xc0 arch/x86/kernel/apic/apic.c:1088
 </IRQ>
 <TASK>
 asm_sysvec_apic_timer_interrupt+0x1a/0x20 arch/x86/include/asm/idtentry.h:687
RIP: 0010:kasan_mem_to_shadow include/linux/kasan.h:60 [inline]
RIP: 0010:memory_is_poisoned_n mm/kasan/generic.c:128 [inline]
RIP: 0010:memory_is_poisoned mm/kasan/generic.c:159 [inline]
RIP: 0010:check_region_inline mm/kasan/generic.c:178 [inline]
RIP: 0010:kasan_check_range+0x52/0x290 mm/kasan/generic.c:187
Code: f9 49 c1 e9 2f 41 81 f9 ff ff 01 00 0f 82 ff 01 00 00 49 89 ff 49 c1 ef 03 49 ba 00 00 00 00 00 fc ff df 4f 8d 1c 17 49 ff c8 <4d> 89 c1 49 c1 e9 03 48 bb 01 00 00 00 00 fc ff df 4d 8d 34 19 4d
RSP: 0018:ffffc90003717808 EFLAGS: 00000283
RAX: ffffffff81cf2301 RBX: 0000000000000020 RCX: ffffffff81cf240f
RDX: 0000000000000000 RSI: 0000000000000004 RDI: ffffea0001ff33f4
RBP: ffffc90003717ab0 R08: ffffea0001ff33f7 R09: 000000000001ffff
R10: dffffc0000000000 R11: fffff940003fe67e R12: ffffea0001ff33c8
R13: dffffc0000000000 R14: ffffea0001ff33f4 R15: 1ffffd40003fe67e
 instrument_atomic_read include/linux/instrumented.h:68 [inline]
 atomic_read include/linux/atomic/atomic-instrumented.h:32 [inline]
 page_ref_count include/linux/page_ref.h:67 [inline]
 folio_ref_count include/linux/page_ref.h:89 [inline]
 page_count include/linux/page_ref.h:94 [inline]
 change_pte_range mm/mprotect.c:131 [inline]
 change_pmd_range mm/mprotect.c:420 [inline]
 change_pud_range mm/mprotect.c:453 [inline]
 change_p4d_range mm/mprotect.c:476 [inline]
 change_protection_range mm/mprotect.c:504 [inline]
 change_protection+0x157f/0x31e0 mm/mprotect.c:538
 change_prot_numa+0xfd/0x190 mm/mempolicy.c:639
 task_numa_work+0xb84/0x1350 kernel/sched/fair.c:3441
 task_work_run+0x1d4/0x260 kernel/task_work.c:245
 resume_user_mode_work include/linux/resume_user_mode.h:49 [inline]
 exit_to_user_mode_loop+0xe6/0x110 kernel/entry/common.c:177
 exit_to_user_mode_prepare+0xee/0x180 kernel/entry/common.c:210
 __syscall_exit_to_user_mode_work kernel/entry/common.c:291 [inline]
 syscall_exit_to_user_mode+0x1a/0x50 kernel/entry/common.c:302
 do_syscall_64+0x61/0xb0 arch/x86/entry/common.c:82
 entry_SYSCALL_64_after_hwframe+0x68/0xd2
RIP: 0033:0x7f55aedc2407
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:00007ffc9cd9f210 EFLAGS: 00000202 ORIG_RAX: 0000000000000001
RAX: 000000000000003b RBX: 00007f55aed38740 RCX: 00007f55aedc2407
RDX: 000000000000003b RSI: 00007ffc9cd9f270 RDI: 0000000000000005
RBP: 000055bd18b60168 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000202 R12: 00007ffc9cd9f6a0
R13: 000055bd2b407100 R14: 000055bd2b3ba3b0 R15: 000055bd2b406ec0
 </TASK>
================================================================================
----------------
Code disassembly (best guess):
   0:	f9                   	stc
   1:	49 c1 e9 2f          	shr    $0x2f,%r9
   5:	41 81 f9 ff ff 01 00 	cmp    $0x1ffff,%r9d
   c:	0f 82 ff 01 00 00    	jb     0x211
  12:	49 89 ff             	mov    %rdi,%r15
  15:	49 c1 ef 03          	shr    $0x3,%r15
  19:	49 ba 00 00 00 00 00 	movabs $0xdffffc0000000000,%r10
  20:	fc ff df
  23:	4f 8d 1c 17          	lea    (%r15,%r10,1),%r11
  27:	49 ff c8             	dec    %r8
* 2a:	4d 89 c1             	mov    %r8,%r9 <-- trapping instruction
  2d:	49 c1 e9 03          	shr    $0x3,%r9
  31:	48 bb 01 00 00 00 00 	movabs $0xdffffc0000000001,%rbx
  38:	fc ff df
  3b:	4d 8d 34 19          	lea    (%r9,%rbx,1),%r14
  3f:	4d                   	rex.WRB