rcu: INFO: rcu_preempt detected stalls on CPUs/tasks:
rcu: 	Tasks blocked on level-0 rcu_node (CPUs 0-1): P10324/2:b..l
	(detected by 1, t=10503 jiffies, g=498769, q=20233 ncpus=2)
task:syz-executor.3  state:R  running task     stack:24872 pid:10324 ppid:1      flags:0x00004006
Call Trace:
 <TASK>
 context_switch kernel/sched/core.c:5304 [inline]
 __schedule+0x17c0/0x4970 kernel/sched/core.c:6617
 preempt_schedule_irq+0xfb/0x1b0 kernel/sched/core.c:6929
 irqentry_exit+0x57/0x80 kernel/entry/common.c:432
 asm_sysvec_apic_timer_interrupt+0x1a/0x20 arch/x86/include/asm/idtentry.h:649
RIP: 0010:lock_is_held_type+0x13b/0x190
Code: 75 40 48 c7 04 24 00 00 00 00 9c 8f 04 24 f7 04 24 00 02 00 00 75 46 41 f7 c4 00 02 00 00 74 01 fb 65 48 8b 04 25 28 00 00 00 <48> 3b 44 24 08 75 3c 89 e8 48 83 c4 10 5b 41 5c 41 5d 41 5e 41 5f
RSP: 0018:ffffc9000311f900 EFLAGS: 00000206
RAX: 9cc260631403ad00 RBX: 0000000000000001 RCX: 0000000080000000
RDX: ffff888077f1ba80 RSI: ffffffff8aea8740 RDI: ffffffff8b3848c0
RBP: 0000000000000001 R08: ffffffff8aa2a948 R09: fffffbfff2039a31
R10: 0000000000000000 R11: dffffc0000000001 R12: 0000000000000246
R13: ffff888077f1ba80 R14: 00000000ffffffff R15: ffffffff8cf270c0
 xa_head include/linux/xarray.h:1182 [inline]
 xas_start+0x239/0x6e0 lib/xarray.c:188
 xa_get_mark+0x1ba/0x590 lib/xarray.c:1946
 devlinks_xa_find_get+0xdb/0x250 net/core/devlink.c:314
 devlinks_xa_find_get_first net/core/devlink.c:334 [inline]
 devlink_pernet_pre_exit+0xda/0x2c0 net/core/devlink.c:12997
 ops_pre_exit_list net/core/net_namespace.c:159 [inline]
 setup_net+0x776/0xb90 net/core/net_namespace.c:355
 copy_net_ns+0x4c6/0x790 net/core/net_namespace.c:490
 create_new_namespaces+0x425/0x7a0 kernel/nsproxy.c:110
 unshare_nsproxy_namespaces+0x11d/0x170 kernel/nsproxy.c:228
 ksys_unshare+0x584/0xb20 kernel/fork.c:3208
 __do_sys_unshare kernel/fork.c:3279 [inline]
 __se_sys_unshare kernel/fork.c:3277 [inline]
 __x64_sys_unshare+0x38/0x40 kernel/fork.c:3277
 do_syscall_x64 arch/x86/entry/common.c:50 [inline]
 do_syscall_64+0x41/0xc0 arch/x86/entry/common.c:80
 entry_SYSCALL_64_after_hwframe+0x63/0xcd
RIP: 0033:0x7fb3ce88d6b7
RSP: 002b:00007ffcffe24ad8 EFLAGS: 00000202 ORIG_RAX: 0000000000000110
RAX: ffffffffffffffda RBX: 00007ffcffe25118 RCX: 00007fb3ce88d6b7
RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000040000000
RBP: 0000000000000003 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000202 R12: 0000000000000003
R13: 00007ffcffe24bb0 R14: 00007fb3ce9ac9d8 R15: 000000000000000c
 </TASK>