rcu: INFO: rcu_preempt detected stalls on CPUs/tasks:
rcu: Tasks blocked on level-0 rcu_node (CPUs 0-1): P7080
rcu: (detected by 0, t=10502 jiffies, g=21345, q=2621 ncpus=2)
task:syz.0.176 state:R running task stack:26936 pid:7080 tgid:7080 ppid:6488 task_flags:0x400040 flags:0x00080002
Call Trace:
sched_show_task+0x4aa/0x5f0 kernel/sched/core.c:7821
rcu_print_detail_task_stall_rnp kernel/rcu/tree_stall.h:292 [inline]
print_other_cpu_stall+0xfca/0x1380 kernel/rcu/tree_stall.h:681
check_cpu_stall kernel/rcu/tree_stall.h:856 [inline]
rcu_pending kernel/rcu/tree.c:3667 [inline]
rcu_sched_clock_irq+0x99f/0x1130 kernel/rcu/tree.c:2704
update_process_times+0x234/0x2d0 kernel/time/timer.c:2474
tick_sched_handle kernel/time/tick-sched.c:298 [inline]
tick_nohz_handler+0x42b/0x770 kernel/time/tick-sched.c:319
__run_hrtimer kernel/time/hrtimer.c:1777 [inline]
__hrtimer_run_queues+0x501/0xd10 kernel/time/hrtimer.c:1841
hrtimer_interrupt+0x42d/0x1000 kernel/time/hrtimer.c:1903
local_apic_timer_interrupt arch/x86/kernel/apic/apic.c:1045 [inline]
__sysvec_apic_timer_interrupt+0x102/0x3d0 arch/x86/kernel/apic/apic.c:1062
instr_sysvec_apic_timer_interrupt arch/x86/kernel/apic/apic.c:1056 [inline]
sysvec_apic_timer_interrupt+0xa1/0xc0 arch/x86/kernel/apic/apic.c:1056
asm_sysvec_apic_timer_interrupt+0x1a/0x20 arch/x86/include/asm/idtentry.h:697
RIP: 0010:__raw_spin_unlock_irqrestore include/linux/spinlock_api_smp.h:152 [inline]
RIP: 0010:_raw_spin_unlock_irqrestore+0x47/0x80 kernel/locking/spinlock.c:194
Code: f7 e8 5d bb 8e f6 f7 c3 00 02 00 00 74 05 e8 e0 2f ba f6 9c 58 a9 00 02 00 00 75 27 f7 c3 00 02 00 00 74 01 fb bf 01 00 00 00 b4 93 81 f6 65 8b 05 bd 8f 14 07 85 c0 74 18 5b 41 5e c3 cc cc
RSP: 0018:ffffc90004a17c08 EFLAGS: 00000206
RAX: 0000000000000006 RBX: 0000000000000246 RCX: 0000000080000002
RDX: 0000000000000006 RSI: ffffffff8d33ad09 RDI: 0000000000000001
RBP: ffffc90004a17ce0 R08: ffffffff8f47de77 R09: 1ffffffff1e8fbce
R10: dffffc0000000000 R11: fffffbfff1e8fbcf R12: 1ffff92000942f8d
R13: 0000000000000246 R14: ffffffff8e387400 R15: ffffc90004a17c60
raw_spin_unlock_irqrestore_wake include/linux/sched/wake_q.h:94 [inline]
rtlock_slowlock kernel/locking/rtmutex.c:1896 [inline]
rtlock_lock kernel/locking/spinlock_rt.c:43 [inline]
__rt_spin_lock kernel/locking/spinlock_rt.c:49 [inline]
rt_spin_lock+0x17a/0x400 kernel/locking/spinlock_rt.c:57
spin_lock include/linux/spinlock_rt.h:44 [inline]
vga_put drivers/pci/vgaarb.c:547 [inline]
vga_arb_release+0x1fb/0x5c0 drivers/pci/vgaarb.c:1425
__fput+0x45e/0xa80 fs/file_table.c:468
task_work_run+0x1d9/0x270 kernel/task_work.c:233
resume_user_mode_work include/linux/resume_user_mode.h:50 [inline]
__exit_to_user_mode_loop kernel/entry/common.c:44 [inline]
exit_to_user_mode_loop+0xed/0x480 kernel/entry/common.c:75
__exit_to_user_mode_prepare include/linux/irq-entry-common.h:226 [inline]
syscall_exit_to_user_mode_prepare include/linux/irq-entry-common.h:256 [inline]
syscall_exit_to_user_mode_work include/linux/entry-common.h:159 [inline]
syscall_exit_to_user_mode include/linux/entry-common.h:194 [inline]
do_syscall_64+0x2b7/0xf80 arch/x86/entry/syscall_64.c:100
entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7fec539aa379
Code: ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 44 00 00 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 73 01 c3 48 c7 c1 e8 ff ff ff f7 d8 64 89 01 48
RSP: 002b:00007ffc1d568478 EFLAGS: 00000246 ORIG_RAX: 00000000000001b4
RAX: 0000000000000000 RBX: 00007ffc1d568560 RCX: 00007fec539aa379
RDX: 0000000000000000 RSI: 000000000000001e RDI: 0000000000000003
RBP: 0000000000029db8 R08: 0000000000000001 R09: 0000000000000000
R10: 0000001b31620000 R11: 0000000000000246 R12: 00007ffc1d5685a0
R13: 00007fec53bf609c R14: 0000000000029ded R15: 00007fec53bf6090