rcu: INFO: rcu_preempt detected stalls on CPUs/tasks:
rcu: 	Tasks blocked on level-0 rcu_node (CPUs 0-1): P5675/1:b..l
rcu: 	(detected by 0, t=10502 jiffies, g=345841, q=877 ncpus=2)
task:syz-executor    state:R  running task     stack:21968 pid:5675  tgid:5675  ppid:1      task_flags:0x40054c flags:0x08080003
Call Trace:
 <TASK>
 context_switch kernel/sched/core.c:5387 [inline]
 __schedule+0x17b4/0x5680 kernel/sched/core.c:7188
 preempt_schedule_common+0x82/0xd0 kernel/sched/core.c:7369
 preempt_schedule_thunk+0x16/0x30 arch/x86/entry/thunk.S:12
 __raw_read_unlock include/linux/rwlock_api_smp.h:256 [inline]
 _raw_read_unlock+0x3f/0x50 kernel/locking/spinlock.c:264
 zap_pid_ns_processes+0x2c9/0x5f0 kernel/pid_namespace.c:233
 find_child_reaper kernel/exit.c:623 [inline]
 forget_original_parent kernel/exit.c:707 [inline]
 exit_notify kernel/exit.c:744 [inline]
 do_exit+0x1f66/0x22c0 kernel/exit.c:987
 do_group_exit+0x21b/0x2d0 kernel/exit.c:1117
 get_signal+0x1284/0x1330 kernel/signal.c:3037
 arch_do_signal_or_restart+0xbc/0x830 arch/x86/kernel/signal.c:337
 __exit_to_user_mode_loop kernel/entry/common.c:64 [inline]
 exit_to_user_mode_loop+0x86/0x480 kernel/entry/common.c:98
 __exit_to_user_mode_prepare include/linux/irq-entry-common.h:207 [inline]
 syscall_exit_to_user_mode_prepare include/linux/irq-entry-common.h:238 [inline]
 syscall_exit_to_user_mode include/linux/entry-common.h:318 [inline]
 do_int80_emulation+0x301/0x530 arch/x86/entry/syscall_32.c:175
 asm_int80_emulation+0x1a/0x20 arch/x86/include/asm/idtentry.h:621
RIP: 0023:0xf714616b
RSP: 002b:00000000f752fc4c EFLAGS: 00000246 ORIG_RAX: 000000000000010b
RAX: 0000000000000000 RBX: 0000000000000000 RCX: 0000000000000000
RDX: 00000000f752fce4 RSI: 00000000f752fcdc RDI: 0000000000000000
RBP: 0000000000000000 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000206 R12: 0000000000000000
R13: 0000000000000000 R14: 0000000000000000 R15: 0000000000000000
 </TASK>