INFO: task syz-executor.1:17923 can't die for more than 143 seconds.
task:syz-executor.1  state:R  running task     stack:26424 pid:17923 ppid:  8491 flags:0x00004006
Call Trace:
 context_switch kernel/sched/core.c:4373 [inline]
 __schedule+0x90c/0x21a0 kernel/sched/core.c:5124
 preempt_schedule_irq+0x4e/0x90 kernel/sched/core.c:5386
 irqentry_exit_cond_resched kernel/entry/common.c:403 [inline]
 irqentry_exit_cond_resched kernel/entry/common.c:395 [inline]
 irqentry_exit+0x7a/0xa0 kernel/entry/common.c:433
 asm_sysvec_apic_timer_interrupt+0x12/0x20 arch/x86/include/asm/idtentry.h:628
RIP: 0010:lock_is_held_type+0xe8/0x120 kernel/locking/lockdep.c:5553
Code: 03 44 39 f0 41 0f 94 c5 48 c7 c7 e0 95 4b 89 e8 ce 0c 00 00 b8 ff ff ff ff 65 0f c1 05 e1 10 06 77 83 f8 01 75 1b ff 34 24 9d <48> 83 c4 08 44 89 e8 5b 5d 41 5c 41 5d 41 5e 41 5f c3 45 31 ed eb
RSP: ffffffff:0000000000000000 EFLAGS: ffff88801e579c00 ORIG_RAX: 0000000000000046
==================================================================
BUG: KASAN: stack-out-of-bounds in __show_regs.cold+0x2b/0x508 arch/x86/kernel/process_64.c:80
Read of size 8 at addr ffffc9000319f7f0 by task khungtaskd/1637

CPU: 1 PID: 1637 Comm: khungtaskd Not tainted 5.11.0-rc4-next-20210119-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
Call Trace:
 __dump_stack lib/dump_stack.c:79 [inline]
 dump_stack+0x107/0x163 lib/dump_stack.c:120
 print_address_description.constprop.0.cold+0x5/0x2f8 mm/kasan/report.c:230
 __kasan_report mm/kasan/report.c:397 [inline]
 kasan_report.cold+0x79/0xd5 mm/kasan/report.c:414
 __show_regs.cold+0x2b/0x508 arch/x86/kernel/process_64.c:80
 show_trace_log_lvl+0x25b/0x2ba arch/x86/kernel/dumpstack.c:298
 sched_show_task kernel/sched/core.c:7168 [inline]
 sched_show_task+0x443/0x590 kernel/sched/core.c:7142
 check_killed_task kernel/hung_task.c:183 [inline]
 check_hung_uninterruptible_tasks kernel/hung_task.c:241 [inline]
 watchdog.cold+0xd8/0x248 kernel/hung_task.c:338
 kthread+0x3b1/0x4a0 kernel/kthread.c:292
 ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:296


Memory state around the buggy address:
 ffffc9000319f680: 00 00 00 00 00 00 f1 f1 f1 f1 00 00 f3 f3 00 00
 ffffc9000319f700: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
>ffffc9000319f780: 00 00 00 00 00 00 00 00 00 00 00 f1 f1 f1 f1 f1
                                                             ^
 ffffc9000319f800: f1 00 00 00 00 00 f3 f3 f3 f3 f3 00 00 00 00 00
 ffffc9000319f880: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
==================================================================