INFO: task dhcpcd:3896 blocked for more than 143 seconds. Not tainted 6.1.92-syzkaller #0 "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. task:dhcpcd state:D stack:0 pid:3896 ppid:1 flags:0x00000804 Call trace: __switch_to+0x320/0x754 arch/arm64/kernel/process.c:553 context_switch kernel/sched/core.c:5245 [inline] __schedule+0xee4/0x1c98 kernel/sched/core.c:6558 schedule+0xc4/0x170 kernel/sched/core.c:6634 schedule_preempt_disabled+0x18/0x2c kernel/sched/core.c:6693 __mutex_lock_common+0xbd8/0x21a0 kernel/locking/mutex.c:679 __mutex_lock kernel/locking/mutex.c:747 [inline] mutex_lock_nested+0x38/0x44 kernel/locking/mutex.c:799 __netlink_dump_start+0x104/0x698 net/netlink/af_netlink.c:2300 netlink_dump_start include/linux/netlink.h:269 [inline] rtnetlink_rcv_msg+0xa3c/0xd94 net/core/rtnetlink.c:6077 netlink_rcv_skb+0x20c/0x3b8 net/netlink/af_netlink.c:2508 rtnetlink_rcv+0x28/0x38 net/core/rtnetlink.c:6139 netlink_unicast_kernel net/netlink/af_netlink.c:1326 [inline] netlink_unicast+0x65c/0x898 net/netlink/af_netlink.c:1352 netlink_sendmsg+0x834/0xb18 net/netlink/af_netlink.c:1874 sock_sendmsg_nosec net/socket.c:718 [inline] __sock_sendmsg net/socket.c:730 [inline] ____sys_sendmsg+0x55c/0x848 net/socket.c:2514 ___sys_sendmsg net/socket.c:2568 [inline] __sys_sendmsg+0x26c/0x33c net/socket.c:2597 __do_sys_sendmsg net/socket.c:2606 [inline] __se_sys_sendmsg net/socket.c:2604 [inline] __arm64_sys_sendmsg+0x80/0x94 net/socket.c:2604 __invoke_syscall arch/arm64/kernel/syscall.c:38 [inline] invoke_syscall+0x98/0x2c0 arch/arm64/kernel/syscall.c:52 el0_svc_common+0x1fc/0x258 arch/arm64/kernel/syscall.c:142 do_el0_svc+0x64/0x218 arch/arm64/kernel/syscall.c:206 el0_svc+0x58/0x168 arch/arm64/kernel/entry-common.c:637 el0t_64_sync_handler+0x84/0xf0 arch/arm64/kernel/entry-common.c:655 el0t_64_sync+0x18c/0x190 arch/arm64/kernel/entry.S:585 INFO: task kworker/1:9:4462 blocked for more than 143 seconds. Not tainted 6.1.92-syzkaller #0 "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. task:kworker/1:9 state:D stack:0 pid:4462 ppid:2 flags:0x00000008 Workqueue: events switchdev_deferred_process_work Call trace: __switch_to+0x320/0x754 arch/arm64/kernel/process.c:553 context_switch kernel/sched/core.c:5245 [inline] __schedule+0xee4/0x1c98 kernel/sched/core.c:6558 schedule+0xc4/0x170 kernel/sched/core.c:6634 schedule_preempt_disabled+0x18/0x2c kernel/sched/core.c:6693 __mutex_lock_common+0xbd8/0x21a0 kernel/locking/mutex.c:679 __mutex_lock kernel/locking/mutex.c:747 [inline] mutex_lock_nested+0x38/0x44 kernel/locking/mutex.c:799 rtnl_lock+0x20/0x2c net/core/rtnetlink.c:74 switchdev_deferred_process_work+0x14/0x28 net/switchdev/switchdev.c:104 process_one_work+0x7ac/0x1404 kernel/workqueue.c:2292 worker_thread+0x8e4/0xfec kernel/workqueue.c:2439 kthread+0x250/0x2d8 kernel/kthread.c:376 ret_from_fork+0x10/0x20 arch/arm64/kernel/entry.S:864 INFO: task kworker/1:10:4465 blocked for more than 143 seconds. Not tainted 6.1.92-syzkaller #0 "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. task:kworker/1:10 state:D stack:0 pid:4465 ppid:2 flags:0x00000008 Workqueue: events linkwatch_event Call trace: __switch_to+0x320/0x754 arch/arm64/kernel/process.c:553 context_switch kernel/sched/core.c:5245 [inline] __schedule+0xee4/0x1c98 kernel/sched/core.c:6558 schedule+0xc4/0x170 kernel/sched/core.c:6634 schedule_preempt_disabled+0x18/0x2c kernel/sched/core.c:6693 __mutex_lock_common+0xbd8/0x21a0 kernel/locking/mutex.c:679 __mutex_lock kernel/locking/mutex.c:747 [inline] mutex_lock_nested+0x38/0x44 kernel/locking/mutex.c:799 rtnl_lock+0x20/0x2c net/core/rtnetlink.c:74 linkwatch_event+0x14/0x68 net/core/link_watch.c:263 process_one_work+0x7ac/0x1404 kernel/workqueue.c:2292 worker_thread+0x8e4/0xfec kernel/workqueue.c:2439 kthread+0x250/0x2d8 kernel/kthread.c:376 ret_from_fork+0x10/0x20 arch/arm64/kernel/entry.S:864 INFO: task kworker/u4:7:4720 blocked for more than 143 seconds. Not tainted 6.1.92-syzkaller #0 "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. task:kworker/u4:7 state:D stack:0 pid:4720 ppid:2 flags:0x00000008 Workqueue: netns cleanup_net Call trace: __switch_to+0x320/0x754 arch/arm64/kernel/process.c:553 context_switch kernel/sched/core.c:5245 [inline] __schedule+0xee4/0x1c98 kernel/sched/core.c:6558 schedule+0xc4/0x170 kernel/sched/core.c:6634 schedule_preempt_disabled+0x18/0x2c kernel/sched/core.c:6693 __mutex_lock_common+0xbd8/0x21a0 kernel/locking/mutex.c:679 __mutex_lock kernel/locking/mutex.c:747 [inline] mutex_lock_nested+0x38/0x44 kernel/locking/mutex.c:799 rtnl_lock+0x20/0x2c net/core/rtnetlink.c:74 wg_destruct+0x30/0x2dc drivers/net/wireguard/device.c:246 netdev_run_todo+0xc34/0xe08 net/core/dev.c:10404 rtnl_unlock+0x14/0x20 net/core/rtnetlink.c:147 default_device_exit_batch+0x9f8/0xa70 net/core/dev.c:11395 ops_exit_list net/core/net_namespace.c:177 [inline] cleanup_net+0x5dc/0x994 net/core/net_namespace.c:604 process_one_work+0x7ac/0x1404 kernel/workqueue.c:2292 worker_thread+0x8e4/0xfec kernel/workqueue.c:2439 kthread+0x250/0x2d8 kernel/kthread.c:376 ret_from_fork+0x10/0x20 arch/arm64/kernel/entry.S:864 INFO: task syz-executor.0:8825 blocked for more than 143 seconds. Not tainted 6.1.92-syzkaller #0 "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. task:syz-executor.0 state:D stack:0 pid:8825 ppid:1 flags:0x0000000d Call trace: __switch_to+0x320/0x754 arch/arm64/kernel/process.c:553 context_switch kernel/sched/core.c:5245 [inline] __schedule+0xee4/0x1c98 kernel/sched/core.c:6558 schedule+0xc4/0x170 kernel/sched/core.c:6634 schedule_preempt_disabled+0x18/0x2c kernel/sched/core.c:6693 __mutex_lock_common+0xbd8/0x21a0 kernel/locking/mutex.c:679 __mutex_lock kernel/locking/mutex.c:747 [inline] mutex_lock_nested+0x38/0x44 kernel/locking/mutex.c:799 rtnl_lock+0x20/0x2c net/core/rtnetlink.c:74 nsim_init_netdevsim drivers/net/netdevsim/netdev.c:310 [inline] nsim_create+0x27c/0x368 drivers/net/netdevsim/netdev.c:365 __nsim_dev_port_add+0x52c/0x8c8 drivers/net/netdevsim/dev.c:1393 nsim_dev_port_add_all+0x4c/0x110 drivers/net/netdevsim/dev.c:1451 nsim_drv_probe+0x6e0/0x994 drivers/net/netdevsim/dev.c:1605 nsim_bus_probe+0x20/0x30 drivers/net/netdevsim/bus.c:239 really_probe+0x394/0xacc drivers/base/dd.c:639 __driver_probe_device+0x194/0x3b4 drivers/base/dd.c:785 driver_probe_device+0x78/0x330 drivers/base/dd.c:815 __device_attach_driver+0x2a8/0x4f4 drivers/base/dd.c:943 bus_for_each_drv+0x158/0x1e0 drivers/base/bus.c:427 __device_attach+0x2f0/0x480 drivers/base/dd.c:1015 device_initial_probe+0x24/0x34 drivers/base/dd.c:1064 bus_probe_device+0xbc/0x1c8 drivers/base/bus.c:487 device_add+0xae0/0xef4 drivers/base/core.c:3686 device_register+0x28/0x38 drivers/base/core.c:3768 nsim_bus_dev_new drivers/net/netdevsim/bus.c:290 [inline] new_device_store+0x340/0x664 drivers/net/netdevsim/bus.c:167 bus_attr_store+0x80/0xa4 drivers/base/bus.c:122 sysfs_kf_write+0x200/0x280 fs/sysfs/file.c:136 kernfs_fop_write_iter+0x334/0x48c fs/kernfs/file.c:330 call_write_iter include/linux/fs.h:2265 [inline] new_sync_write fs/read_write.c:491 [inline] vfs_write+0x610/0x914 fs/read_write.c:584 ksys_write+0x15c/0x26c fs/read_write.c:637 __do_sys_write fs/read_write.c:649 [inline] __se_sys_write fs/read_write.c:646 [inline] __arm64_sys_write+0x7c/0x90 fs/read_write.c:646