rcu: INFO: rcu_preempt detected stalls on CPUs/tasks:
rcu: 	Tasks blocked on level-0 rcu_node (CPUs 0-1): P6264/1:b..l
	(detected by 0, t=10502 jiffies, g=23317, q=73)
task:syz.1.354       state:R  running task     stack:27600 pid: 6264 ppid:  4190 flags:0x00004000
Call Trace:
 <TASK>
 context_switch kernel/sched/core.c:5049 [inline]
 __schedule+0x11ef/0x43c0 kernel/sched/core.c:6395
 preempt_schedule_irq+0xbb/0x160 kernel/sched/core.c:6799
 irqentry_exit+0x63/0x70 kernel/entry/common.c:432
 asm_sysvec_apic_timer_interrupt+0x16/0x20 arch/x86/include/asm/idtentry.h:676
RIP: 0010:lock_is_held_type+0x9/0x190 kernel/locking/lockdep.c:5651
Code: 20 30 2b 8a 48 c7 c6 60 30 2b 8a e8 e1 0c f5 ff 0f 0b eb bf e8 98 fd ff ff 0f 1f 84 00 00 00 00 00 55 41 57 41 56 41 55 41 54 <53> 48 83 ec 10 65 48 8b 04 25 28 00 00 00 48 89 44 24 08 bd ff ff
RSP: 0018:ffffc90004707eb0 EFLAGS: 00000202
RAX: 1ffffffff1864701 RBX: ffff8880630d8000 RCX: 357e76748fcd9800
RDX: 0000000000000000 RSI: 00000000ffffffff RDI: ffffffff8c31f360
RBP: 0000000000000001 R08: dffffc0000000000 R09: 1ffffffff203b018
R10: dffffc0000000000 R11: fffffbfff203b019 R12: dffffc0000000000
R13: ffff888053d4d780 R14: ffff888026f2af20 R15: ffff888026f2af18
 __task_pid_nr_ns+0x1c4/0x420 kernel/pid.c:500
 task_tgid_vnr include/linux/sched.h:1588 [inline]
 __ia32_sys_getpid+0x19/0x20 kernel/sys.c:945
 do_syscall_x64 arch/x86/entry/common.c:50 [inline]
 do_syscall_64+0x4c/0xa0 arch/x86/entry/common.c:80
 entry_SYSCALL_64_after_hwframe+0x66/0xd0
RIP: 0033:0x7fd9e16ffbd7
RSP: 002b:00007fffbbbaf288 EFLAGS: 00000206 ORIG_RAX: 0000000000000027
RAX: ffffffffffffffda RBX: 00007fffbbbaf3f0 RCX: 00007fd9e16ffbd7
RDX: 00007fffbbbaf2c0 RSI: 00007fffbbbaf3f0 RDI: 0000000000000021
RBP: 0000000000000000 R08: 00007fd9e1969000 R09: 00007fd9e196b000
R10: 00000000817f7290 R11: 0000000000000206 R12: 00007fd9e197f038
R13: 0000000000008dff R14: ffffffff817f7947 R15: 00007fd9e24ae720
 </TASK>
rcu: rcu_preempt kthread starved for 10523 jiffies! g23317 f0x0 RCU_GP_WAIT_FQS(5) ->state=0x0 ->cpu=1
rcu: 	Unless rcu_preempt kthread gets sufficient CPU time, OOM is now expected behavior.
rcu: RCU grace-period kthread stack dump:
task:rcu_preempt     state:R  running task     stack:27984 pid:   15 ppid:     2 flags:0x00004000
Call Trace:
 <TASK>
 context_switch kernel/sched/core.c:5049 [inline]
 __schedule+0x11ef/0x43c0 kernel/sched/core.c:6395
 schedule+0x11b/0x1e0 kernel/sched/core.c:6478
 schedule_timeout+0x184/0x2d0 kernel/time/timer.c:2117
 rcu_gp_fqs_loop+0x2be/0x11d0 kernel/rcu/tree.c:1972
 rcu_gp_kthread+0x9b/0x370 kernel/rcu/tree.c:2145
 kthread+0x436/0x520 kernel/kthread.c:334
 ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:287
 </TASK>
rcu: Stack dump where RCU GP kthread last ran:
Sending NMI from CPU 0 to CPUs 1:
NMI backtrace for cpu 1 skipped: idling at native_safe_halt arch/x86/include/asm/irqflags.h:51 [inline]
NMI backtrace for cpu 1 skipped: idling at arch_safe_halt arch/x86/include/asm/irqflags.h:89 [inline]
NMI backtrace for cpu 1 skipped: idling at default_idle+0xb/0x10 arch/x86/kernel/process.c:729