Warning: Permanently added '10.128.0.63' (ECDSA) to the list of known hosts.
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syzkaller login: [  486.057821][    C1] hrtimer: interrupt took 47570 ns
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[  716.151597][   T27] INFO: task syz-executor101:6552 can't die for more than 143 seconds.
[  716.160029][   T27] task:syz-executor101 state:R  running task     stack:27048 pid: 6552 ppid:  6550 flags:0x00004006
[  716.170948][   T27] Call Trace:
[  716.174316][   T27]  __schedule+0x940/0x26f0
[  716.179166][   T27]  ? io_schedule_timeout+0x140/0x140
[  716.184602][   T27]  ? __cond_resched+0x13/0x20
[  716.189309][   T27]  preempt_schedule_common+0x45/0xc0
[  716.194646][   T27]  __cond_resched+0x13/0x20
[  716.199604][   T27]  inet_twsk_purge+0xed/0x7d0
[  716.204427][   T27]  ? sockfs_dname+0x80/0x80
[  716.209036][   T27]  ? inet_twsk_deschedule_put+0x50/0x50
[  716.214708][   T27]  ? iput+0x58/0x70
[  716.218597][   T27]  ? tcp_v6_init_sock+0x80/0x80
[  716.223575][   T27]  ? tcpv6_net_exit_batch+0x20/0x20
[  716.228793][   T27]  ops_exit_list+0x10d/0x160
[  716.233486][   T27]  setup_net+0x639/0xa30
[  716.237754][   T27]  ? ops_init+0x470/0x470
[  716.242201][   T27]  ? rcu_read_lock_sched_held+0x3a/0x70
[  716.247825][   T27]  copy_net_ns+0x319/0x760
[  716.252294][   T27]  create_new_namespaces+0x3f6/0xb20
[  716.257743][   T27]  unshare_nsproxy_namespaces+0xc1/0x1f0
[  716.263455][   T27]  ksys_unshare+0x445/0x920
[  716.268048][   T27]  ? unshare_fd+0x1c0/0x1c0
[  716.272641][   T27]  ? asm_sysvec_apic_timer_interrupt+0x12/0x20
[  716.278886][   T27]  ? trace_hardirqs_on+0x38/0x1c0
[  716.284070][   T27]  __x64_sys_unshare+0x2d/0x40
[  716.288852][   T27]  do_syscall_64+0x35/0xb0
[  716.293362][   T27]  entry_SYSCALL_64_after_hwframe+0x44/0xae
[  716.299278][   T27] RIP: 0033:0x7f3b6edb8f89
[  716.303774][   T27] RSP: 002b:00007fff31a30948 EFLAGS: 00000246 ORIG_RAX: 0000000000000110
[  716.312235][   T27] RAX: ffffffffffffffda RBX: 00000000000f4240 RCX: 00007f3b6edb8f89
[  716.320226][   T27] RDX: 00007f3b6edb8f89 RSI: ffffffffffffffff RDI: 0000000040000000
[  716.328276][   T27] RBP: 0000000000000000 R08: 0000000000000000 R09: 0000000000000000
[  716.336336][   T27] R10: 0000000000000000 R11: 0000000000000246 R12: 00007f3b6ed7c760
[  716.344378][   T27] R13: 0000000000000000 R14: 00007fff31a30970 R15: 00007fff31a30960
[  720.744262][   T27] INFO: task syz-executor101:6559 can't die for more than 147 seconds.
[  720.752676][   T27] task:syz-executor101 state:R  running task     stack:27064 pid: 6559 ppid:  6551 flags:0x00004006
[  720.764000][   T27] Call Trace:
[  720.767298][   T27]  ? rcu_read_lock_sched_held+0x3a/0x70
[  720.772917][   T27]  ? lock_release+0x720/0x720
[  720.777669][   T27]  ? asm_sysvec_apic_timer_interrupt+0x12/0x20
[  720.783872][   T27]  ? io_schedule_timeout+0x140/0x140
[  720.789444][   T27]  ? __cond_resched+0x13/0x20
[  720.794342][   T27]  ? preempt_schedule_common+0x45/0xc0
[  720.799831][   T27]  ? __cond_resched+0x13/0x20
[  720.804578][   T27]  ? inet_twsk_purge+0xed/0x7d0
[  720.809536][   T27]  ? sockfs_dname+0x80/0x80
[  720.814126][   T27]  ? inet_twsk_deschedule_put+0x50/0x50
[  720.819699][   T27]  ? iput+0x58/0x70
[  720.823574][   T27]  ? tcp_v6_init_sock+0x80/0x80
[  720.828438][   T27]  ? tcpv6_net_exit_batch+0x20/0x20
[  720.833706][   T27]  ? ops_exit_list+0x10d/0x160
[  720.838490][   T27]  ? setup_net+0x639/0xa30
[  720.842956][   T27]  ? ops_init+0x470/0x470
[  720.847297][   T27]  ? rcu_read_lock_sched_held+0x3a/0x70
[  720.853073][   T27]  ? copy_net_ns+0x319/0x760
[  720.857699][   T27]  ? create_new_namespaces+0x3f6/0xb20
[  720.863217][   T27]  ? unshare_nsproxy_namespaces+0xc1/0x1f0
[  720.869041][   T27]  ? ksys_unshare+0x445/0x920
[  720.873792][   T27]  ? unshare_fd+0x1c0/0x1c0
[  720.878309][   T27]  ? asm_sysvec_apic_timer_interrupt+0x12/0x20
[  720.884534][   T27]  ? trace_hardirqs_on+0x38/0x1c0
[  720.889579][   T27]  ? __x64_sys_unshare+0x2d/0x40
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[  720.894577][   T27]  ? do_syscall_64+0x35/0xb0
[  720.899175][   T27]  ? entry_SYSCALL_64_after_hwframe+0x44/0xae