INFO: task syz-executor:12616 blocked for more than 143 seconds.
      Tainted: G             L       syzkaller #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:syz-executor    state:D stack:24248 pid:12616 tgid:12616 ppid:1      task_flags:0x400140 flags:0x00080003
Call Trace:
 <TASK>
 context_switch kernel/sched/core.c:5583 [inline]
 __schedule+0x125e/0x6990 kernel/sched/core.c:7382
 __schedule_loop kernel/sched/core.c:7459 [inline]
 schedule+0xdd/0x2c0 kernel/sched/core.c:7474
 schedule_preempt_disabled+0x13/0x30 kernel/sched/core.c:7531
 rwsem_down_write_slowpath+0x4c6/0x12f0 kernel/locking/rwsem.c:1215
 __down_write_common kernel/locking/rwsem.c:1347 [inline]
 __down_write kernel/locking/rwsem.c:1356 [inline]
 down_write+0x1bb/0x1f0 kernel/locking/rwsem.c:1632
 rdma_dev_exit_net+0x174/0x6b0 drivers/infiniband/core/device.c:1156
 ops_exit_list net/core/net_namespace.c:200 [inline]
 ops_undo_list+0x2ee/0xab0 net/core/net_namespace.c:253
 setup_net+0x1fa/0x3a0 net/core/net_namespace.c:459
 copy_net_ns+0x340/0x7a0 net/core/net_namespace.c:582
 create_new_namespaces+0x3ea/0xac0 kernel/nsproxy.c:132
 create_new_namespaces+0x3ea/0xac0 kernel/nsproxy.c:132
 unshare_nsproxy_namespaces+0xf6/0x210 kernel/nsproxy.c:234
 ksys_unshare+0x44f/0x980 kernel/fork.c:3291
 __do_sys_unshare kernel/fork.c:3357 [inline]
 __se_sys_unshare kernel/fork.c:3355 [inline]
 __x64_sys_unshare+0x31/0x40 kernel/fork.c:3355
 do_syscall_x64 arch/x86/entry/syscall_64.c:61 [inline]
 do_syscall_64+0x123/0x790 arch/x86/entry/syscall_64.c:84
 entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7fa5f41a0827
RSP: 002b:00007ffc17ebeb48 EFLAGS: 00000206 ORIG_RAX: 0000000000000110
RAX: ffffffffffffffda RBX: 00007fa5f4425f40 RCX: 00007fa5f41a0827
RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000040000000
RBP: 00007fa5f44267b8 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000206 R12: 0000000000000008
R13: 0000000000000003 R14: 00007ffc17ebed88 R15: 0000000000000000
 </TASK>

Showing all locks held in the system:
locks held by pr/ttyS0/31: 2, last CPU#0:
 #0: ffffffff8ffd7658 (console_srcu){....}-{0:0}, at: rcu_try_lock_acquire include/linux/rcupdate.h:314 [inline]
 #0: ffffffff8ffd7658 (console_srcu){....}-{0:0}, at: srcu_read_lock_nmisafe include/linux/srcu.h:493 [inline]
 #0: ffffffff8ffd7658 (console_srcu){....}-{0:0}, at: console_srcu_read_lock+0x49/0x60 kernel/printk/printk.c:291
 #1: ffffffff8ffeb300 (rcu_callback){....}-{0:0}, at: rcu_lock_acquire include/linux/rcupdate.h:309 [inline]
 #1: ffffffff8ffeb300 (rcu_callback){....}-{0:0}, at: rcu_do_batch kernel/rcu/tree.c:2644 [inline]
 #1: ffffffff8ffeb300 (rcu_callback){....}-{0:0}, at: rcu_core+0x58f/0x1220 kernel/rcu/tree.c:2919
locks held by khungtaskd/32: 1, last CPU#1:
 #0: ffffffff8ffeb420 (rcu_read_lock){....}-{1:3}, at: rcu_lock_acquire include/linux/rcupdate.h:309 [inline]
 #0: ffffffff8ffeb420 (rcu_read_lock){....}-{1:3}, at: rcu_read_lock include/linux/rcupdate.h:849 [inline]
 #0: ffffffff8ffeb420 (rcu_read_lock){....}-{1:3}, at: debug_show_all_locks+0x3d/0x184 kernel/locking/lockdep.c:6871
locks held by kworker/u8:6/139: 4, on CPU#1:
 #0: ffff88801dec0948 ((wq_completion)netns){+.+.}-{0:0}, at: process_one_work+0x1461/0x1b10 kernel/workqueue.c:3470
 #1: ffffc90002e47d08 (net_cleanup_work){+.+.}-{0:0}, at: process_one_work+0xa2c/0x1b10 kernel/workqueue.c:3471
 #2: ffffffff91f029c8 (pernet_ops_rwsem){++++}-{4:4}, at: cleanup_net+0xb8/0x920 net/core/net_namespace.c:677
 #3: ffffffff91b31928 (rdma_nets_rwsem){++++}-{4:4}, at: rdma_dev_exit_net+0x174/0x6b0 drivers/infiniband/core/device.c:1156
locks held by getty/5372: 2, on CPU#0:
 #0: ffff8880350430a0 (&tty->ldisc_sem){++++}-{0:0}, at: tty_ldisc_ref_wait+0x24/0x80 drivers/tty/tty_ldisc.c:243
 #1: ffffc9000322e2e8 (&ldata->atomic_read_lock){+.+.}-{4:4}, at: n_tty_read+0x419/0x1540 drivers/tty/n_tty.c:2211
locks held by kworker/1:7/5826: 3, last CPU#1:
 #0: ffff88813ff2dd48 ((wq_completion)events_power_efficient){+.+.}-{0:0}, at: process_one_work+0x1461/0x1b10 kernel/workqueue.c:3470
 #1: ffffc90004837d08 ((work_completion)(&(&gc_work->dwork)->work)){+.+.}-{0:0}, at: process_one_work+0xa2c/0x1b10 kernel/workqueue.c:3471
 #2: ffffffff8ffeb420 (rcu_read_lock){....}-{1:3}, at: rcu_lock_acquire include/linux/rcupdate.h:309 [inline]
 #2: ffffffff8ffeb420 (rcu_read_lock){....}-{1:3}, at: rcu_read_lock include/linux/rcupdate.h:849 [inline]
 #2: ffffffff8ffeb420 (rcu_read_lock){....}-{1:3}, at: gc_worker+0x21a/0x1a10 net/netfilter/nf_conntrack_core.c:1530
locks held by kworker/u8:16/7113: 5, last CPU#1:
 #0: ffff88813ff6c148 ((wq_completion)events_unbound){+.+.}-{0:0}, at: process_one_work+0x1461/0x1b10 kernel/workqueue.c:3470
 #1: ffffc90003957d08 ((work_completion)(&(&kfence_timer)->work)){+.+.}-{0:0}, at: process_one_work+0xa2c/0x1b10 kernel/workqueue.c:3471
 #2: ffffffff8fe7a6f0 (cpu_hotplug_lock){++++}-{0:0}, at: static_key_enable+0x12/0x20 kernel/jump_label.c:222
 #3: ffffffff9014ca00 (jump_label_mutex){+.+.}-{4:4}, at: jump_label_lock kernel/jump_label.c:27 [inline]
 #3: ffffffff9014ca00 (jump_label_mutex){+.+.}-{4:4}, at: static_key_enable_cpuslocked+0xb5/0x270 kernel/jump_label.c:207
 #4: ffffffff8fe9b280 (text_mutex){+.+.}-{4:4}, at: arch_jump_label_transform_apply+0x17/0x30 arch/x86/kernel/jump_label.c:145
locks held by kworker/u8:18/8189: 3, last CPU#1:
 #0: ffff88813ff6c148 ((wq_completion)events_unbound){+.+.}-{0:0}, at: process_one_work+0x1461/0x1b10 kernel/workqueue.c:3470
 #1: ffffc900055bfd08 ((work_completion)(&(&nsim_dev->trap_data->trap_report_dw)->work)){+.+.}-{0:0}, at: process_one_work+0xa2c/0x1b10 kernel/workqueue.c:3471
 #2: ffff888028ba0258 (&devlink->lock_key#4){+.+.}-{4:4}, at: nsim_dev_trap_report_work+0x56/0xd20 drivers/net/netdevsim/dev.c:834
locks held by kworker/u8:19/10400: 3, last CPU#1:
 #0: ffff88813ff6c148 ((wq_completion)events_unbound){+.+.}-{0:0}, at: process_one_work+0x1461/0x1b10 kernel/workqueue.c:3470
 #1: ffffc9000562fd08 ((work_completion)(&(&nsim_dev->trap_data->trap_report_dw)->work)){+.+.}-{0:0}, at: process_one_work+0xa2c/0x1b10 kernel/workqueue.c:3471
 #2: ffff88802af5d258 (&devlink->lock_key#2){+.+.}-{4:4}, at: nsim_dev_trap_report_work+0x56/0xd20 drivers/net/netdevsim/dev.c:834
locks held by kworker/u8:21/10402: 2, last CPU#1:
 #0: ffff88803552c948 ((wq_completion)bat_events){+.+.}-{0:0}, at: process_one_work+0x1461/0x1b10 kernel/workqueue.c:3470
 #1: ffffc90006b2fd08 ((work_completion)(&(&bat_priv->tt.work)->work)){+.+.}-{0:0}, at: process_one_work+0xa2c/0x1b10 kernel/workqueue.c:3471
locks held by syz-executor/12616: 2, on CPU#1:
 #0: ffffffff91f029c8 (pernet_ops_rwsem){++++}-{4:4}, at: copy_net_ns+0x31e/0x7a0 net/core/net_namespace.c:578
 #1: ffffffff91b31928 (rdma_nets_rwsem){++++}-{4:4}, at: rdma_dev_exit_net+0x174/0x6b0 drivers/infiniband/core/device.c:1156
locks held by syz-executor/12622: 2, on CPU#1:
 #0: ffffffff91f029c8 (pernet_ops_rwsem){++++}-{4:4}, at: copy_net_ns+0x31e/0x7a0 net/core/net_namespace.c:578
 #1: ffff888025381020 (&device->compat_devs_mutex){+.+.}-{4:4}, at: remove_one_compat_dev drivers/infiniband/core/device.c:1031 [inline]
 #1: ffff888025381020 (&device->compat_devs_mutex){+.+.}-{4:4}, at: rdma_dev_exit_net+0x2d2/0x6b0 drivers/infiniband/core/device.c:1173
locks held by syz-executor/12689: 2, on CPU#1:
 #0: ffffffff91f029c8 (pernet_ops_rwsem){++++}-{4:4}, at: copy_net_ns+0x31e/0x7a0 net/core/net_namespace.c:578
 #1: ffffffff91b31928 (rdma_nets_rwsem){++++}-{4:4}, at: rdma_dev_exit_net+0x174/0x6b0 drivers/infiniband/core/device.c:1156
locks held by syz-executor/12693: 2, on CPU#0:
 #0: ffffffff91f029c8 (pernet_ops_rwsem){++++}-{4:4}, at: copy_net_ns+0x31e/0x7a0 net/core/net_namespace.c:578
 #1: ffffffff91b31928 (rdma_nets_rwsem){++++}-{4:4}, at: rdma_dev_exit_net+0x174/0x6b0 drivers/infiniband/core/device.c:1156
locks held by syz-executor/12754: 2, on CPU#0:
 #0: ffffffff91f029c8 (pernet_ops_rwsem){++++}-{4:4}, at: copy_net_ns+0x31e/0x7a0 net/core/net_namespace.c:578
 #1: ffffffff91b31928 (rdma_nets_rwsem){++++}-{4:4}, at: rdma_dev_exit_net+0x174/0x6b0 drivers/infiniband/core/device.c:1156
locks held by syz-executor/12758: 2, on CPU#0:
 #0: ffffffff91f029c8 (pernet_ops_rwsem){++++}-{4:4}, at: copy_net_ns+0x31e/0x7a0 net/core/net_namespace.c:578
 #1: ffffffff91b31928 (rdma_nets_rwsem){++++}-{4:4}, at: rdma_dev_exit_net+0x174/0x6b0 drivers/infiniband/core/device.c:1156
locks held by syz-executor/12769: 3, on CPU#1:
 #0: ffffffff91f029c8 (pernet_ops_rwsem){++++}-{4:4}, at: copy_net_ns+0x31e/0x7a0 net/core/net_namespace.c:578
 #1: ffffffff91b31ba8 (devices_rwsem){++++}-{4:4}, at: rdma_dev_init_net+0x287/0x580 drivers/infiniband/core/device.c:1221
 #2: ffffffff91b31928 (rdma_nets_rwsem){++++}-{4:4}, at: rdma_dev_init_net+0x2fa/0x580 drivers/infiniband/core/device.c:1226
locks held by syz-executor/12784: 3, on CPU#0:
 #0: ffffffff91f029c8 (pernet_ops_rwsem){++++}-{4:4}, at: copy_net_ns+0x31e/0x7a0 net/core/net_namespace.c:578
 #1: ffffffff91b31ba8 (devices_rwsem){++++}-{4:4}, at: rdma_dev_init_net+0x287/0x580 drivers/infiniband/core/device.c:1221
 #2: ffffffff91b31928 (rdma_nets_rwsem){++++}-{4:4}, at: rdma_dev_init_net+0x2fa/0x580 drivers/infiniband/core/device.c:1226
locks held by syz-executor/12796: 4, on CPU#1:
 #0: ffffffff91f029c8 (pernet_ops_rwsem){++++}-{4:4}, at: copy_net_ns+0x31e/0x7a0 net/core/net_namespace.c:578
 #1: ffffffff91b31ba8 (devices_rwsem){++++}-{4:4}, at: rdma_dev_init_net+0x287/0x580 drivers/infiniband/core/device.c:1221
 #2: ffffffff91b31928 (rdma_nets_rwsem){++++}-{4:4}, at: rdma_dev_init_net+0x2fa/0x580 drivers/infiniband/core/device.c:1226
 #3: ffff888025381020 (&device->compat_devs_mutex){+.+.}-{4:4}, at: add_one_compat_dev+0x112/0x820 drivers/infiniband/core/device.c:976
locks held by syz-executor/12837: 4, on CPU#1:
 #0: ffffffff91f029c8 (pernet_ops_rwsem){++++}-{4:4}, at: copy_net_ns+0x31e/0x7a0 net/core/net_namespace.c:578
 #1: ffffffff91b31ba8 (devices_rwsem){++++}-{4:4}, at: rdma_dev_init_net+0x287/0x580 drivers/infiniband/core/device.c:1221
 #2: ffffffff91b31928 (rdma_nets_rwsem){++++}-{4:4}, at: rdma_dev_init_net+0x2fa/0x580 drivers/infiniband/core/device.c:1226
 #3: ffff888025381020 (&device->compat_devs_mutex){+.+.}-{4:4}, at: add_one_compat_dev+0x112/0x820 drivers/infiniband/core/device.c:976
locks held by syz-executor/12844: 4, on CPU#0:
 #0: ffffffff91f029c8 (pernet_ops_rwsem){++++}-{4:4}, at: copy_net_ns+0x31e/0x7a0 net/core/net_namespace.c:578
 #1: ffffffff91b31ba8 (devices_rwsem){++++}-{4:4}, at: rdma_dev_init_net+0x287/0x580 drivers/infiniband/core/device.c:1221
 #2: ffffffff91b31928 (rdma_nets_rwsem){++++}-{4:4}, at: rdma_dev_init_net+0x2fa/0x580 drivers/infiniband/core/device.c:1226
 #3: ffff888025381020 (&device->compat_devs_mutex){+.+.}-{4:4}, at: add_one_compat_dev+0x112/0x820 drivers/infiniband/core/device.c:976
locks held by syz-executor/12849: 4, on CPU#1:
 #0: ffffffff91f029c8 (pernet_ops_rwsem){++++}-{4:4}, at: copy_net_ns+0x31e/0x7a0 net/core/net_namespace.c:578
 #1: ffffffff91b31ba8 (devices_rwsem){++++}-{4:4}, at: rdma_dev_init_net+0x287/0x580 drivers/infiniband/core/device.c:1221
 #2: ffffffff91b31928 (rdma_nets_rwsem){++++}-{4:4}, at: rdma_dev_init_net+0x2fa/0x580 drivers/infiniband/core/device.c:1226
 #3: ffff888025381020 (&device->compat_devs_mutex){+.+.}-{4:4}, at: add_one_compat_dev+0x112/0x820 drivers/infiniband/core/device.c:976
locks held by syz-executor/12874: 4, last CPU#1:
 #0: ffffffff91f029c8 (pernet_ops_rwsem){++++}-{4:4}, at: copy_net_ns+0x31e/0x7a0 net/core/net_namespace.c:578
 #1: ffffffff91b31ba8 (devices_rwsem){++++}-{4:4}, at: rdma_dev_init_net+0x287/0x580 drivers/infiniband/core/device.c:1221
 #2: ffffffff91b31928 (rdma_nets_rwsem){++++}-{4:4}, at: rdma_dev_init_net+0x2fa/0x580 drivers/infiniband/core/device.c:1226
 #3: ffff888025381020 (&device->compat_devs_mutex){+.+.}-{4:4}, at: add_one_compat_dev+0x112/0x820 drivers/infiniband/core/device.c:976
locks held by syz-executor/12889: 3, on CPU#1:
 #0: ffffffff91f029c8 (pernet_ops_rwsem){++++}-{4:4}, at: copy_net_ns+0x31e/0x7a0 net/core/net_namespace.c:578
 #1: ffffffff91b31ba8 (devices_rwsem){++++}-{4:4}, at: rdma_dev_init_net+0x287/0x580 drivers/infiniband/core/device.c:1221
 #2: ffffffff91b31928 (rdma_nets_rwsem){++++}-{4:4}, at: rdma_dev_init_net+0x2fa/0x580 drivers/infiniband/core/device.c:1226
locks held by syz-executor/12941: 3, on CPU#1:
 #0: ffffffff91f029c8 (pernet_ops_rwsem){++++}-{4:4}, at: copy_net_ns+0x31e/0x7a0 net/core/net_namespace.c:578
 #1: ffffffff91b31ba8 (devices_rwsem){++++}-{4:4}, at: rdma_dev_init_net+0x287/0x580 drivers/infiniband/core/device.c:1221
 #2: ffffffff91b31928 (rdma_nets_rwsem){++++}-{4:4}, at: rdma_dev_init_net+0x2fa/0x580 drivers/infiniband/core/device.c:1226
locks held by syz-executor/12953: 4, on CPU#0:
 #0: ffffffff91f029c8 (pernet_ops_rwsem){++++}-{4:4}, at: copy_net_ns+0x31e/0x7a0 net/core/net_namespace.c:578
 #1: ffffffff91b31ba8 (devices_rwsem){++++}-{4:4}, at: rdma_dev_init_net+0x287/0x580 drivers/infiniband/core/device.c:1221
 #2: ffffffff91b31928 (rdma_nets_rwsem){++++}-{4:4}, at: rdma_dev_init_net+0x2fa/0x580 drivers/infiniband/core/device.c:1226
 #3: ffff888025381020 (&device->compat_devs_mutex){+.+.}-{4:4}, at: add_one_compat_dev+0x112/0x820 drivers/infiniband/core/device.c:976
locks held by syz-executor/12959: 4, on CPU#0:
 #0: ffffffff91f029c8 (pernet_ops_rwsem){++++}-{4:4}, at: copy_net_ns+0x31e/0x7a0 net/core/net_namespace.c:578
 #1: ffffffff91b31ba8 (devices_rwsem){++++}-{4:4}, at: rdma_dev_init_net+0x287/0x580 drivers/infiniband/core/device.c:1221
 #2: ffffffff91b31928 (rdma_nets_rwsem){++++}-{4:4}, at: rdma_dev_init_net+0x2fa/0x580 drivers/infiniband/core/device.c:1226
 #3: ffff888025381020 (&device->compat_devs_mutex){+.+.}-{4:4}, at: add_one_compat_dev+0x112/0x820 drivers/infiniband/core/device.c:976
locks held by syz-executor/12965: 3, on CPU#0:
 #0: ffffffff91f029c8 (pernet_ops_rwsem){++++}-{4:4}, at: copy_net_ns+0x31e/0x7a0 net/core/net_namespace.c:578
 #1: ffffffff91b31ba8 (devices_rwsem){++++}-{4:4}, at: rdma_dev_init_net+0x287/0x580 drivers/infiniband/core/device.c:1221
 #2: ffffffff91b31928 (rdma_nets_rwsem){++++}-{4:4}, at: rdma_dev_init_net+0x2fa/0x580 drivers/infiniband/core/device.c:1226
locks held by syz-executor/12971: 4, on CPU#0:
 #0: ffffffff91f029c8 (pernet_ops_rwsem){++++}-{4:4}, at: copy_net_ns+0x31e/0x7a0 net/core/net_namespace.c:578
 #1: ffffffff91b31ba8 (devices_rwsem){++++}-{4:4}, at: rdma_dev_init_net+0x287/0x580 drivers/infiniband/core/device.c:1221
 #2: ffffffff91b31928 (rdma_nets_rwsem){++++}-{4:4}, at: rdma_dev_init_net+0x2fa/0x580 drivers/infiniband/core/device.c:1226
 #3: ffff888025381020 (&device->compat_devs_mutex){+.+.}-{4:4}, at: add_one_compat_dev+0x112/0x820 drivers/infiniband/core/device.c:976
locks held by syz-executor/13031: 3, on CPU#1:
 #0: ffffffff91f029c8 (pernet_ops_rwsem){++++}-{4:4}, at: copy_net_ns+0x31e/0x7a0 net/core/net_namespace.c:578
 #1: ffffffff91b31ba8 (devices_rwsem){++++}-{4:4}, at: rdma_dev_init_net+0x287/0x580 drivers/infiniband/core/device.c:1221
 #2: ffffffff91b31928 (rdma_nets_rwsem){++++}-{4:4}, at: rdma_dev_init_net+0x2fa/0x580 drivers/infiniband/core/device.c:1226
locks held by syz-executor/13040: 3, on CPU#1:
 #0: ffffffff91f029c8 (pernet_ops_rwsem){++++}-{4:4}, at: copy_net_ns+0x31e/0x7a0 net/core/net_namespace.c:578
 #1: ffffffff91b31ba8 (devices_rwsem){++++}-{4:4}, at: rdma_dev_init_net+0x287/0x580 drivers/infiniband/core/device.c:1221
 #2: ffffffff91b31928 (rdma_nets_rwsem){++++}-{4:4}, at: rdma_dev_init_net+0x2fa/0x580 drivers/infiniband/core/device.c:1226
locks held by syz-executor/13060: 3, on CPU#0:
 #0: ffffffff91f029c8 (pernet_ops_rwsem){++++}-{4:4}, at: copy_net_ns+0x31e/0x7a0 net/core/net_namespace.c:578
 #1: ffffffff91b31ba8 (devices_rwsem){++++}-{4:4}, at: rdma_dev_init_net+0x287/0x580 drivers/infiniband/core/device.c:1221
 #2: ffffffff91b31928 (rdma_nets_rwsem){++++}-{4:4}, at: rdma_dev_init_net+0x2fa/0x580 drivers/infiniband/core/device.c:1226
locks held by syz-executor/13081: 3, on CPU#0:
 #0: ffffffff91f029c8 (pernet_ops_rwsem){++++}-{4:4}, at: copy_net_ns+0x31e/0x7a0 net/core/net_namespace.c:578
 #1: ffffffff91b31ba8 (devices_rwsem){++++}-{4:4}, at: rdma_dev_init_net+0x287/0x580 drivers/infiniband/core/device.c:1221
 #2: ffffffff91b31928 (rdma_nets_rwsem){++++}-{4:4}, at: rdma_dev_init_net+0x2fa/0x580 drivers/infiniband/core/device.c:1226
locks held by syz-executor/13091: 3, on CPU#0:
 #0: ffffffff91f029c8 (pernet_ops_rwsem){++++}-{4:4}, at: copy_net_ns+0x31e/0x7a0 net/core/net_namespace.c:578
 #1: ffffffff91b31ba8 (devices_rwsem){++++}-{4:4}, at: rdma_dev_init_net+0x287/0x580 drivers/infiniband/core/device.c:1221
 #2: ffffffff91b31928 (rdma_nets_rwsem){++++}-{4:4}, at: rdma_dev_init_net+0x2fa/0x580 drivers/infiniband/core/device.c:1226
locks held by rm/13120: 1, last CPU#1:
 #0: ffff88807995e540 (&mm->mmap_lock){++++}-{4:4}, at: mmap_write_lock include/linux/mmap_lock.h:530 [inline]
 #0: ffff88807995e540 (&mm->mmap_lock){++++}-{4:4}, at: exit_mmap+0x22c/0xa00 mm/mmap.c:1323

=============================================

NMI backtrace for cpu 1
CPU: 1 UID: 0 PID: 32 Comm: khungtaskd Tainted: G             L       syzkaller #0 PREEMPT(full) 
Tainted: [L]=SOFTLOCKUP
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/15/2026
Call Trace:
 <TASK>
 __dump_stack lib/dump_stack.c:94 [inline]
 dump_stack_lvl+0x100/0x190 lib/dump_stack.c:120
 nmi_cpu_backtrace.cold+0x12d/0x151 lib/nmi_backtrace.c:123
 nmi_trigger_cpumask_backtrace+0x21f/0x2a0 lib/nmi_backtrace.c:66
 trigger_all_cpu_backtrace include/linux/nmi.h:164 [inline]
 __sys_info lib/sys_info.c:157 [inline]
 sys_info+0x141/0x190 lib/sys_info.c:165
 check_hung_uninterruptible_tasks kernel/hung_task.c:353 [inline]
 watchdog+0xcb1/0x1030 kernel/hung_task.c:561
 kthread+0x373/0x450 kernel/kthread.c:436
 ret_from_fork+0x730/0xd60 arch/x86/kernel/process.c:158
 ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:245
 </TASK>
Sending NMI from CPU 1 to CPUs 0:
NMI backtrace for cpu 0
CPU: 0 UID: 0 PID: 5878 Comm: kworker/0:7 Tainted: G             L       syzkaller #0 PREEMPT(full) 
Tainted: [L]=SOFTLOCKUP
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/15/2026
Workqueue: events_power_efficient wg_ratelimiter_gc_entries
RIP: 0010:hlock_class kernel/locking/lockdep.c:234 [inline]
RIP: 0010:check_wait_context kernel/locking/lockdep.c:4923 [inline]
RIP: 0010:__lock_acquire+0x4ee/0x1f40 kernel/locking/lockdep.c:5238
Code: 02 44 0f 44 f0 41 83 c5 01 48 83 c3 28 45 3b ac 24 a0 0b 00 00 7d 27 0f b7 43 20 66 25 ff 1f 0f b7 c0 48 0f a3 05 12 05 d3 15 <72> ac 8b 05 2a b1 db 1a 85 c0 0f 84 05 03 00 00 31 c9 eb aa 48 89
RSP: 0018:ffffc900049f7a80 EFLAGS: 00000003
RAX: 00000000000007fe RBX: ffff88807cfa0bd8 RCX: ffffffff97bddc20
RDX: 00000000000007ff RSI: ffff88807cfa0bd8 RDI: 0000000000000007
RBP: ffff88807cfa0c00 R08: 0000000000000001 R09: 0000000000000002
R10: 0000000000000002 R11: 0000000000000001 R12: ffff88807cfa0000
R13: 0000000000000001 R14: 0000000000000005 R15: 0000000000000003
FS:  0000000000000000(0000) GS:ffff8881224ac000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007fed478df286 CR3: 000000007dd4f000 CR4: 00000000003526f0
Call Trace:
 <TASK>
 lock_acquire kernel/locking/lockdep.c:5942 [inline]
 lock_acquire+0x1d1/0x380 kernel/locking/lockdep.c:5899
 __raw_spin_lock include/linux/spinlock_api_smp.h:190 [inline]
 _raw_spin_lock+0x2e/0x40 kernel/locking/spinlock.c:173
 spin_lock include/linux/spinlock.h:347 [inline]
 wg_ratelimiter_gc_entries+0x62/0x510 drivers/net/wireguard/ratelimiter.c:63
 process_one_work+0xac7/0x1b10 kernel/workqueue.c:3495
 process_scheduled_works kernel/workqueue.c:3578 [inline]
 worker_thread+0x5ef/0xe50 kernel/workqueue.c:3659
 kthread+0x373/0x450 kernel/kthread.c:436
 ret_from_fork+0x730/0xd60 arch/x86/kernel/process.c:158
 ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:245
 </TASK>