INFO: task syz-executor.0:7173 blocked for more than 141 seconds.
      Not tainted 5.15.0-next-20211106-syzkaller #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:syz-executor.0  state:D stack:28008 pid: 7173 ppid:  9001 flags:0x00004004
Call Trace:
 <TASK>
 context_switch kernel/sched/core.c:4984 [inline]
 __schedule+0xa9a/0x4940 kernel/sched/core.c:6265
 schedule+0xd2/0x260 kernel/sched/core.c:6338
 schedule_preempt_disabled+0xf/0x20 kernel/sched/core.c:6397
 __mutex_lock_common kernel/locking/mutex.c:680 [inline]
 __mutex_lock+0xa32/0x12f0 kernel/locking/mutex.c:740
 smc_pnet_create_pnetids_list net/smc/smc_pnet.c:798 [inline]
 smc_pnet_net_init+0x1f9/0x410 net/smc/smc_pnet.c:867
 ops_init+0xaf/0x470 net/core/net_namespace.c:140
 setup_net+0x40f/0xa30 net/core/net_namespace.c:326
 copy_net_ns+0x318/0x760 net/core/net_namespace.c:470
 create_new_namespaces+0x3f6/0xb20 kernel/nsproxy.c:110
 unshare_nsproxy_namespaces+0xc1/0x1f0 kernel/nsproxy.c:226
 ksys_unshare+0x445/0x920 kernel/fork.c:3126
 __do_sys_unshare kernel/fork.c:3197 [inline]
 __se_sys_unshare kernel/fork.c:3195 [inline]
 __x64_sys_unshare+0x2d/0x40 kernel/fork.c:3195
 do_syscall_x64 arch/x86/entry/common.c:50 [inline]
 do_syscall_64+0x35/0xb0 arch/x86/entry/common.c:80
 entry_SYSCALL_64_after_hwframe+0x44/0xae
RIP: 0033:0x7fd64c226ae9
RSP: 002b:00007fd64979c188 EFLAGS: 00000246 ORIG_RAX: 0000000000000110
RAX: ffffffffffffffda RBX: 00007fd64c339f60 RCX: 00007fd64c226ae9
RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000040000000
RBP: 00007fd64c280f25 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 00007ffc9d4efd9f R14: 00007fd64979c300 R15: 0000000000022000
 </TASK>