rcu: INFO: rcu_preempt detected stalls on CPUs/tasks:
	(detected by 0, t=10502 jiffies, g=18789, q=218)
rcu: All QSes seen, last rcu_preempt kthread activity 10502 (4294969804-4294959302), jiffies_till_next_fqs=1, root ->qsmask 0x0
syz-executor.2  R  running task    26232 11850   9025 0x00004000
Call Trace:
 <IRQ>
 sched_show_task+0x411/0x560 kernel/sched/core.c:5954
 print_other_cpu_stall kernel/rcu/tree_stall.h:430 [inline]
 check_cpu_stall kernel/rcu/tree_stall.h:558 [inline]
 rcu_pending kernel/rcu/tree.c:3030 [inline]
 rcu_sched_clock_irq+0x188c/0x1aa0 kernel/rcu/tree.c:2276
 update_process_times+0x12d/0x180 kernel/time/timer.c:1726
 tick_sched_handle kernel/time/tick-sched.c:171 [inline]
 tick_sched_timer+0x263/0x420 kernel/time/tick-sched.c:1314
 __run_hrtimer kernel/time/hrtimer.c:1517 [inline]
 __hrtimer_run_queues+0x3f3/0x840 kernel/time/hrtimer.c:1579
 hrtimer_interrupt+0x37c/0xda0 kernel/time/hrtimer.c:1641
 local_apic_timer_interrupt arch/x86/kernel/apic/apic.c:1119 [inline]
 smp_apic_timer_interrupt+0x109/0x280 arch/x86/kernel/apic/apic.c:1144
 apic_timer_interrupt+0xf/0x20 arch/x86/entry/entry_64.S:829
 </IRQ>
RIP: 0010:__raw_spin_unlock_irq include/linux/spinlock_api_smp.h:169 [inline]
RIP: 0010:_raw_spin_unlock_irq+0x5a/0x80 kernel/locking/spinlock.c:199
Code: 00 00 00 00 fc ff df 80 3c 08 00 74 0c 48 c7 c7 e0 d2 2a 89 e8 f7 54 9b f9 48 83 3d 1f 02 12 01 00 74 26 fb 66 0f 1f 44 00 00 <bf> 01 00 00 00 e8 dc 56 3a f9 65 8b 05 f1 4c e9 77 85 c0 74 03 5b
RSP: 0018:ffffc90005f57800 EFLAGS: 00000282 ORIG_RAX: ffffffffffffff13
RAX: 1ffffffff1255a5c RBX: ffff8880aea37180 RCX: dffffc0000000000
RDX: ffffc9000ebc6000 RSI: 000000000003ffff RDI: ffff888083d86e04
RBP: ffffc90005f57808 R08: ffff888083d86e18 R09: ffffed1015d46e31
R10: ffffed1015d46e31 R11: 0000000000000000 R12: ffff8880aea37180
R13: dffffc0000000000 R14: ffffffff886366a8 R15: ffff888083d865c0
 rq_unlock_irq kernel/sched/sched.h:1240 [inline]
 __schedule+0xa58/0xcd0 kernel/sched/core.c:4085
 schedule+0x188/0x210 kernel/sched/core.c:4156
 tty_open+0x8c9/0xcd0 drivers/tty/tty_io.c:2042
 chrdev_open+0x509/0x590 fs/char_dev.c:414
 do_dentry_open+0x85b/0x10c0 fs/open.c:797
 vfs_open+0x73/0x80 fs/open.c:914
 do_last fs/namei.c:3490 [inline]
 path_openat+0x16f1/0x4380 fs/namei.c:3607
 do_filp_open+0x192/0x3d0 fs/namei.c:3637
 do_sys_openat2+0x42b/0x6f0 fs/open.c:1149
 do_sys_open fs/open.c:1165 [inline]
 __do_sys_openat fs/open.c:1179 [inline]
 __se_sys_openat fs/open.c:1174 [inline]
 __x64_sys_openat+0x1e6/0x210 fs/open.c:1174
 do_syscall_64+0xf7/0x1c0 arch/x86/entry/common.c:294
 entry_SYSCALL_64_after_hwframe+0x49/0xbe
RIP: 0033:0x45b3b9
Code: ad b6 fb ff c3 66 2e 0f 1f 84 00 00 00 00 00 66 90 48 89 f8 48 89 f7 48 89 d6 48 89 ca 4d 89 c2 4d 89 c8 4c 8b 4c 24 08 0f 05 <48> 3d 01 f0 ff ff 0f 83 7b b6 fb ff c3 66 2e 0f 1f 84 00 00 00 00
RSP: 002b:00007f1e6ed2bc78 EFLAGS: 00000246 ORIG_RAX: 0000000000000101
RAX: ffffffffffffffda RBX: 00007f1e6ed2c6d4 RCX: 000000000045b3b9
RDX: 0000000000000000 RSI: 0000000020000080 RDI: ffffffffffffff9c
RBP: 000000000075bf20 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 00000000ffffffff
R13: 00000000000007ee R14: 00000000004c9619 R15: 000000000075bf2c
rcu: rcu_preempt kthread starved for 10502 jiffies! g18789 f0x2 RCU_GP_WAIT_FQS(5) ->state=0x0 ->cpu=1
rcu: RCU grace-period kthread stack dump:
rcu_preempt     R  running task    28816    10      2 0x80004000
Call Trace:
 context_switch kernel/sched/core.c:3386 [inline]
 __schedule+0x87f/0xcd0 kernel/sched/core.c:4082
 schedule+0x188/0x210 kernel/sched/core.c:4156
 schedule_timeout+0x14f/0x240 kernel/time/timer.c:1895
 rcu_gp_fqs_loop kernel/rcu/tree.c:1658 [inline]
 rcu_gp_kthread+0xe8d/0x17e0 kernel/rcu/tree.c:1818
 kthread+0x332/0x350 kernel/kthread.c:255
 ret_from_fork+0x24/0x30 arch/x86/entry/entry_64.S:352