rcu: INFO: rcu_preempt detected stalls on CPUs/tasks: rcu: Tasks blocked on level-0 rcu_node (CPUs 0-1): P22223/1:b.el rcu: (detected by 1, t=10502 jiffies, g=84325, q=9277 ncpus=2) task:syz.5.4171 state:R running task stack:25984 pid:22223 tgid:22215 ppid:11775 flags:0x00004006 Call Trace: context_switch kernel/sched/core.c:5369 [inline] __schedule+0x1850/0x4c30 kernel/sched/core.c:6756 preempt_schedule_irq+0xfb/0x1c0 kernel/sched/core.c:7078 irqentry_exit+0x5e/0x90 kernel/entry/common.c:354 asm_sysvec_apic_timer_interrupt+0x1a/0x20 arch/x86/include/asm/idtentry.h:702 RIP: 0010:should_resched arch/x86/include/asm/preempt.h:103 [inline] RIP: 0010:__local_bh_enable_ip+0x170/0x200 kernel/softirq.c:396 Code: 8c e8 14 44 67 0a 65 66 8b 05 f4 00 a2 7e 66 85 c0 75 5d bf 01 00 00 00 e8 0d be 0b 00 e8 08 67 45 00 fb 65 8b 05 b8 00 a2 7e <85> c0 75 05 e8 37 82 a8 ff 48 c7 44 24 20 0e 36 e0 45 49 c7 04 1c RSP: 0018:ffffc900034c7720 EFLAGS: 00000282 RAX: 0000000080000000 RBX: 1ffff92000698ee8 RCX: ffffffff817b383a RDX: dffffc0000000000 RSI: ffffffff8c0a9840 RDI: ffffffff8c5fb0e0 RBP: ffffc900034c77e0 R08: ffffffff942a58bf R09: 1ffffffff2854b17 R10: dffffc0000000000 R11: fffffbfff2854b18 R12: dffffc0000000000 R13: 1ffff92000698eec R14: ffffc900034c7760 R15: 0000000000000201 spin_unlock_bh include/linux/spinlock.h:396 [inline] cfg80211_mlme_unregister_socket+0x2c0/0x6a0 net/wireless/mlme.c:754 nl80211_netlink_notify+0x339/0x840 net/wireless/nl80211.c:20127 notifier_call_chain+0x1a7/0x3f0 kernel/notifier.c:85 blocking_notifier_call_chain+0x69/0x90 kernel/notifier.c:380 netlink_release+0x11a6/0x1bf0 net/netlink/af_netlink.c:764 __sock_release net/socket.c:640 [inline] sock_close+0xbe/0x240 net/socket.c:1408 __fput+0x23e/0xa50 fs/file_table.c:450 task_work_run+0x251/0x310 kernel/task_work.c:239 get_signal+0x15f7/0x1750 kernel/signal.c:2790 arch_do_signal_or_restart+0x96/0x860 arch/x86/kernel/signal.c:337 exit_to_user_mode_loop kernel/entry/common.c:111 [inline] exit_to_user_mode_prepare include/linux/entry-common.h:329 [inline] __syscall_exit_to_user_mode_work kernel/entry/common.c:207 [inline] syscall_exit_to_user_mode+0xce/0x340 kernel/entry/common.c:218 do_syscall_64+0x100/0x230 arch/x86/entry/common.c:89 entry_SYSCALL_64_after_hwframe+0x77/0x7f RIP: 0033:0x7f73f1d85d29 RSP: 002b:00007f73f2ae0038 EFLAGS: 00000246 ORIG_RAX: 0000000000000010 RAX: ffffffffffffffed RBX: 00007f73f1f76160 RCX: 00007f73f1d85d29 RDX: 0000000020000080 RSI: 0000000000008933 RDI: 0000000000000009 RBP: 00007f73f1e01b08 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 R13: 0000000000000000 R14: 00007f73f1f76160 R15: 00007ffdf79abbe8