[v5.15] INFO: task hung in nsim_create

[syzbot]

Hello,

syzbot found the following issue on:

HEAD commit: 4878aadf2d15 Linux 5.15.161
git tree: linux-5.15.y
console output: https://syzkaller.appspot.com/x/log.txt?x=1682950e980000
kernel config: https://syzkaller.appspot.com/x/.config?x=875d98826c53bf16
dashboard link: https://syzkaller.appspot.com/bug?extid=8fb582c141a7da513d75
compiler: Debian clang version 15.0.6, GNU ld (GNU Binutils for Debian) 2.40

Unfortunately, I don't have any reproducer for this issue yet.

Downloadable assets:
disk image: https://storage.googleapis.com/syzbot-assets/f227a150ea92/disk-4878aadf.raw.xz
vmlinux: https://storage.googleapis.com/syzbot-assets/6cfc50bf8b4e/vmlinux-4878aadf.xz
kernel image: https://storage.googleapis.com/syzbot-assets/23f7adc3c761/bzImage-4878aadf.xz

IMPORTANT: if you fix the issue, please add the following tag to the commit:
Reported-by: syzbot+8fb582...@syzkaller.appspotmail.com

INFO: task kworker/u4:0:9 blocked for more than 143 seconds.
Not tainted 5.15.161-syzkaller #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:kworker/u4:0 state:D stack:22712 pid: 9 ppid: 2 flags:0x00004000
Workqueue: netns cleanup_net
Call Trace:
<TASK>
context_switch kernel/sched/core.c:5030 [inline]
__schedule+0x12c4/0x45b0 kernel/sched/core.c:6376
schedule+0x11b/0x1f0 kernel/sched/core.c:6459
schedule_preempt_disabled+0xf/0x20 kernel/sched/core.c:6518
__mutex_lock_common+0xe34/0x25a0 kernel/locking/mutex.c:669
__mutex_lock kernel/locking/mutex.c:729 [inline]
mutex_lock_nested+0x17/0x20 kernel/locking/mutex.c:743
nsim_init_netdevsim drivers/net/netdevsim/netdev.c:310 [inline]
nsim_create+0x2ec/0x3e0 drivers/net/netdevsim/netdev.c:365
__nsim_dev_port_add+0x6de/0xb90 drivers/net/netdevsim/dev.c:1312
nsim_dev_port_add_all drivers/net/netdevsim/dev.c:1372 [inline]
nsim_dev_reload_create drivers/net/netdevsim/dev.c:1421 [inline]
nsim_dev_reload_up+0x6c9/0x970 drivers/net/netdevsim/dev.c:910
devlink_reload+0x31a/0x750 net/core/devlink.c:3970
devlink_pernet_pre_exit+0x1ca/0x350 net/core/devlink.c:11543



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