INFO: task kworker/1:1:24 blocked for more than 143 seconds. Not tainted 6.3.0-rc1-syzkaller-gfe15c26ee26e #0 "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. task:kworker/1:1 state:D stack:0 pid:24 ppid:2 flags:0x00000008 Workqueue: vsock-loopback vsock_loopback_work Call trace: __switch_to+0x320/0x754 arch/arm64/kernel/process.c:556 context_switch kernel/sched/core.c:5304 [inline] __schedule+0x1130/0x1fd0 kernel/sched/core.c:6622 schedule+0xc4/0x170 kernel/sched/core.c:6698 __lock_sock+0x168/0x2d4 net/core/sock.c:2897 lock_sock_nested+0xc0/0x138 net/core/sock.c:3478 lock_sock include/net/sock.h:1697 [inline] virtio_transport_recv_pkt+0x778/0x4ce4 net/vmw_vsock/virtio_transport_common.c:1304 vsock_loopback_work+0x328/0x430 net/vmw_vsock/vsock_loopback.c:122 process_one_work+0x868/0x16f4 kernel/workqueue.c:2390 worker_thread+0x8e0/0xfe8 kernel/workqueue.c:2537 kthread+0x24c/0x2d4 kernel/kthread.c:376 ret_from_fork+0x10/0x20 arch/arm64/kernel/entry.S:870 Showing all locks held in the system: 2 locks held by kworker/u4:0/9: 1 lock held by rcu_tasks_kthre/12: #0: ffff800015eb7c90 (rcu_tasks.tasks_gp_mutex){+.+.}-{3:3}, at: rcu_tasks_one_gp+0x44/0xcf4 kernel/rcu/tasks.h:510 1 lock held by rcu_tasks_trace/13: #0: ffff800015eb8490 (rcu_tasks_trace.tasks_gp_mutex){+.+.}-{3:3}, at: rcu_tasks_one_gp+0x44/0xcf4 kernel/rcu/tasks.h:510 3 locks held by kworker/1:1/24: #0: ffff0000d369a938 ((wq_completion)vsock-loopback){+.+.}-{0:0}, at: process_one_work+0x664/0x16f4 kernel/workqueue.c:2363 #1: ffff80001a4a7c20 ((work_completion)(&vsock->pkt_work)){+.+.}-{0:0}, at: process_one_work+0x6a8/0x16f4 kernel/workqueue.c:2365 #2: ffff00012e91abb0 (sk_lock-AF_VSOCK){+.+.}-{0:0}, at: lock_sock include/net/sock.h:1697 [inline] #2: ffff00012e91abb0 (sk_lock-AF_VSOCK){+.+.}-{0:0}, at: virtio_transport_recv_pkt+0x778/0x4ce4 net/vmw_vsock/virtio_transport_common.c:1304 1 lock held by khungtaskd/28: #0: ffff800015eb7ac0 (rcu_read_lock){....}-{1:2}, at: rcu_lock_acquire+0xc/0x44 include/linux/rcupdate.h:326 1 lock held by udevd/5476: 2 locks held by getty/5625: #0: ffff0000d84d3098 (&tty->ldisc_sem){++++}-{0:0}, at: ldsem_down_read+0x3c/0x4c drivers/tty/tty_ldsem.c:340 #1: ffff80001a9f02f0 (&ldata->atomic_read_lock){+.+.}-{3:3}, at: n_tty_read+0x414/0x1210 drivers/tty/n_tty.c:2177 1 lock held by syz-executor.3/5992: #0: ffff800015ebcf38 (rcu_state.exp_mutex){+.+.}-{3:3}, at: exp_funnel_lock kernel/rcu/tree_exp.h:293 [inline] #0: ffff800015ebcf38 (rcu_state.exp_mutex){+.+.}-{3:3}, at: synchronize_rcu_expedited+0x3ac/0x728 kernel/rcu/tree_exp.h:989 1 lock held by syz-executor.5/8646: #0: ffff00012e91abb0 (sk_lock-AF_VSOCK){+.+.}-{0:0}, at: lock_sock include/net/sock.h:1697 [inline] #0: ffff00012e91abb0 (sk_lock-AF_VSOCK){+.+.}-{0:0}, at: vsock_connectible_recvmsg+0xcc/0x94c net/vmw_vsock/af_vsock.c:2102 2 locks held by kworker/u4:25/11643: #0: ffff0001b44de818 (&rq->__lock){-.-.}-{2:2}, at: raw_spin_rq_lock_nested kernel/sched/core.c:539 [inline] #0: ffff0001b44de818 (&rq->__lock){-.-.}-{2:2}, at: raw_spin_rq_lock kernel/sched/sched.h:1366 [inline] #0: ffff0001b44de818 (&rq->__lock){-.-.}-{2:2}, at: rq_lock kernel/sched/sched.h:1653 [inline] #0: ffff0001b44de818 (&rq->__lock){-.-.}-{2:2}, at: __schedule+0x2cc/0x1fd0 kernel/sched/core.c:6539 #1: ffff0000c17955e0 (&mm->cid_lock#2){....}-{2:2}, at: mm_cid_get+0x17c/0x384 kernel/sched/sched.h:3280 2 locks held by kworker/0:11/12280: #0: ffff0000c0021d38 ((wq_completion)rcu_gp){+.+.}-{0:0}, at: process_one_work+0x664/0x16f4 kernel/workqueue.c:2363 #1: ffff80002cc27c20 ((work_completion)(&rew->rew_work)){+.+.}-{0:0}, at: process_one_work+0x6a8/0x16f4 kernel/workqueue.c:2365 =============================================