rcu: INFO: rcu_preempt detected stalls on CPUs/tasks:
rcu: 	Tasks blocked on level-0 rcu_node (CPUs 0-1): P28351/2:b..l
	(detected by 1, t=10503 jiffies, g=180117, q=24847 ncpus=2)
task:syz-executor.2  state:R  running task     stack:27016 pid:28351 ppid:1      flags:0x00004006
Call Trace:
 <TASK>
 context_switch kernel/sched/core.c:5293 [inline]
 __schedule+0xb8a/0x5450 kernel/sched/core.c:6606
 preempt_schedule_irq+0x52/0xa0 kernel/sched/core.c:6918
 irqentry_exit+0x35/0x80 kernel/entry/common.c:432
 asm_sysvec_apic_timer_interrupt+0x1a/0x20 arch/x86/include/asm/idtentry.h:649
RIP: 0010:check_kcov_mode kernel/kcov.c:173 [inline]
RIP: 0010:__sanitizer_cov_trace_pc+0xb/0x70 kernel/kcov.c:207
Code: 0f 1e fa 48 8b be a8 01 00 00 e8 b0 ff ff ff 31 c0 c3 66 66 2e 0f 1f 84 00 00 00 00 00 66 90 f3 0f 1e fa 65 8b 05 bd 29 83 7e <89> c1 48 8b 34 24 81 e1 00 01 00 00 65 48 8b 14 25 40 ac 03 00 a9
RSP: 0018:ffffc90003ebfa78 EFLAGS: 00000206
RAX: 0000000080000000 RBX: ffffc90003ebfb18 RCX: 0000000000000000
RDX: ffff88802c31a200 RSI: ffffffff89bc2e6c RDI: 0000000000000006
RBP: 0000000000000001 R08: 0000000000000006 R09: 0000000000000001
R10: ffffffffffffffff R11: 0000000000094001 R12: 0000000000000001
R13: 0000000000000003 R14: ffffffffffffffff R15: ffffc90003ebfb18
 xas_find_marked+0xba/0x10b0 lib/xarray.c:1322
 xa_find+0x13d/0x330 lib/xarray.c:2022
 devlinks_xa_find_get.constprop.0+0x93/0x260 net/core/devlink.c:306
 devlinks_xa_find_get_first net/core/devlink.c:334 [inline]
 devlink_pernet_pre_exit+0x8a/0x1d0 net/core/devlink.c:12997
 ops_pre_exit_list net/core/net_namespace.c:159 [inline]
 setup_net+0x90b/0xe60 net/core/net_namespace.c:350
 copy_net_ns+0x31b/0x6b0 net/core/net_namespace.c:483
 create_new_namespaces+0x3f6/0xb20 kernel/nsproxy.c:110
 unshare_nsproxy_namespaces+0xc5/0x1f0 kernel/nsproxy.c:228
 ksys_unshare+0x449/0x920 kernel/fork.c:3202
 __do_sys_unshare kernel/fork.c:3273 [inline]
 __se_sys_unshare kernel/fork.c:3271 [inline]
 __x64_sys_unshare+0x31/0x40 kernel/fork.c:3271
 do_syscall_x64 arch/x86/entry/common.c:50 [inline]
 do_syscall_64+0x39/0xb0 arch/x86/entry/common.c:80
 entry_SYSCALL_64_after_hwframe+0x63/0xcd
RIP: 0033:0x7f1b2348d687
RSP: 002b:00007ffc3f429358 EFLAGS: 00000206 ORIG_RAX: 0000000000000110
RAX: ffffffffffffffda RBX: 00007ffc3f429998 RCX: 00007f1b2348d687
RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000040000000
RBP: 00000000ffffffff R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000206 R12: 0000000000000003
R13: 00007ffc3f429430 R14: 00007f1b235ac9d8 R15: 000000000000000c
 </TASK>