INFO: task kworker/0:5:3601 blocked for more than 430 seconds. Tainted: G W 6.2.0-rc1-syzkaller #0 "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. task:kworker/0:5 state:D stack:0 pid:3601 ppid:2 flags:0x00000000 Workqueue: events mptcp_worker Call Trace: [] context_switch kernel/sched/core.c:5244 [inline] [] __schedule+0x644/0x1274 kernel/sched/core.c:6555 [] schedule+0x7a/0x102 kernel/sched/core.c:6631 [] __lock_sock+0x126/0x204 net/core/sock.c:2904 [] lock_sock_nested+0xbc/0xbe net/core/sock.c:3475 [] lock_sock include/net/sock.h:1725 [inline] [] mptcp_worker+0x9c/0xa34 net/mptcp/protocol.c:2607 [] process_one_work+0x660/0x102e kernel/workqueue.c:2289 [] worker_thread+0x362/0x878 kernel/workqueue.c:2436 [] kthread+0x19c/0x1f8 kernel/kthread.c:376 [] ret_from_exception+0x0/0x1a arch/riscv/kernel/entry.S:249 INFO: task syz-executor.1:7618 blocked for more than 430 seconds. Tainted: G W 6.2.0-rc1-syzkaller #0 "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. task:syz-executor.1 state:D stack:0 pid:7618 ppid:2904 flags:0x00000004 Call Trace: [] context_switch kernel/sched/core.c:5244 [inline] [] __schedule+0x644/0x1274 kernel/sched/core.c:6555 [] schedule+0x7a/0x102 kernel/sched/core.c:6631 [] __lock_sock+0x126/0x204 net/core/sock.c:2904 [] lock_sock_nested+0xbc/0xbe net/core/sock.c:3475 [] __mptcp_close_ssk+0x10e/0x4c4 net/mptcp/protocol.c:2322 [] mptcp_destroy_common+0xda/0x2d0 net/mptcp/protocol.c:3152 [] mptcp_disconnect+0x8e/0x220 net/mptcp/protocol.c:3003 [] __inet_stream_connect+0x7de/0x842 net/ipv4/af_inet.c:717 [] tcp_sendmsg_fastopen+0x232/0x360 net/ipv4/tcp.c:1200 [] mptcp_sendmsg_fastopen net/mptcp/protocol.c:1676 [inline] [] mptcp_sendmsg+0xc8c/0xef8 net/mptcp/protocol.c:1715 [] inet_sendmsg+0x74/0x94 net/ipv4/af_inet.c:827 [] sock_sendmsg_nosec net/socket.c:714 [inline] [] sock_sendmsg+0xa0/0xc4 net/socket.c:734 [] __sys_sendto+0x210/0x30e net/socket.c:2117 [] __do_sys_sendto net/socket.c:2129 [inline] [] sys_sendto+0x3e/0x52 net/socket.c:2125 [] ret_from_syscall+0x0/0x2 Showing all locks held in the system: 1 lock held by rcu_tasks_kthre/12: #0: ffffffff8517bdd0 (rcu_tasks.tasks_gp_mutex){+.+.}-{3:3}, at: rcu_tasks_one_gp+0x34/0x6fe kernel/rcu/tasks.h:507 1 lock held by rcu_tasks_trace/13: #0: ffffffff8517bb30 (rcu_tasks_trace.tasks_gp_mutex){+.+.}-{3:3}, at: rcu_tasks_one_gp+0x34/0x6fe kernel/rcu/tasks.h:507 1 lock held by khungtaskd/29: #0: ffffffff8517b960 (rcu_read_lock){....}-{1:2}, at: debug_show_all_locks+0x3c/0x20e kernel/locking/lockdep.c:6496 2 locks held by syslogd/2627: #0: ff6000005a9d8758 (&rq->__lock){-.-.}-{2:2}, at: raw_spin_rq_lock_nested kernel/sched/core.c:537 [inline] #0: ff6000005a9d8758 (&rq->__lock){-.-.}-{2:2}, at: raw_spin_rq_lock kernel/sched/sched.h:1358 [inline] #0: ff6000005a9d8758 (&rq->__lock){-.-.}-{2:2}, at: rq_lock kernel/sched/sched.h:1648 [inline] #0: ff6000005a9d8758 (&rq->__lock){-.-.}-{2:2}, at: __schedule+0x1be/0x1274 kernel/sched/core.c:6472 #1: ff6000005a9c7788 (&per_cpu_ptr(group->pcpu, cpu)->seq){-.-.}-{0:0}, at: psi_task_switch+0x168/0x40e kernel/sched/psi.c:976 2 locks held by getty/2801: #0: ff60000011f08098 (&tty->ldisc_sem){++++}-{0:0}, at: ldsem_down_read+0x3a/0x46 drivers/tty/tty_ldsem.c:340 #1: ff2000000026b2f0 (&ldata->atomic_read_lock){+.+.}-{3:3}, at: n_tty_read+0xb9c/0xd0c drivers/tty/n_tty.c:2177 3 locks held by kworker/0:5/3601: #0: ff60000008220d38 ((wq_completion)events){+.+.}-{0:0}, at: set_work_data kernel/workqueue.c:635 [inline] #0: ff60000008220d38 ((wq_completion)events){+.+.}-{0:0}, at: set_work_pool_and_clear_pending kernel/workqueue.c:663 [inline] #0: ff60000008220d38 ((wq_completion)events){+.+.}-{0:0}, at: process_one_work+0x510/0x102e kernel/workqueue.c:2260 #1: ff20000008e47cf0 ((work_completion)(&msk->work)){+.+.}-{0:0}, at: set_work_data kernel/workqueue.c:635 [inline] #1: ff20000008e47cf0 ((work_completion)(&msk->work)){+.+.}-{0:0}, at: set_work_pool_and_clear_pending kernel/workqueue.c:663 [inline] #1: ff20000008e47cf0 ((work_completion)(&msk->work)){+.+.}-{0:0}, at: process_one_work+0x510/0x102e kernel/workqueue.c:2260 #2: ff6000002b7e9830 (sk_lock-AF_INET){+.+.}-{0:0}, at: lock_sock include/net/sock.h:1725 [inline] #2: ff6000002b7e9830 (sk_lock-AF_INET){+.+.}-{0:0}, at: mptcp_worker+0x9c/0xa34 net/mptcp/protocol.c:2607 3 locks held by kworker/1:3/7155: 3 locks held by syz-executor.1/7618: #0: ff6000002b7e9830 (sk_lock-AF_INET){+.+.}-{0:0}, at: lock_sock include/net/sock.h:1725 [inline] #0: ff6000002b7e9830 (sk_lock-AF_INET){+.+.}-{0:0}, at: mptcp_sendmsg+0xd2/0xef8 net/mptcp/protocol.c:1708 #1: ff6000002bb30130 (k-sk_lock-AF_INET){+.+.}-{0:0}, at: lock_sock include/net/sock.h:1725 [inline] #1: ff6000002bb30130 (k-sk_lock-AF_INET){+.+.}-{0:0}, at: mptcp_sendmsg_fastopen net/mptcp/protocol.c:1672 [inline] #1: ff6000002bb30130 (k-sk_lock-AF_INET){+.+.}-{0:0}, at: mptcp_sendmsg+0xc26/0xef8 net/mptcp/protocol.c:1715 #2: ff6000002bb30130 (k-sk_lock-AF_INET/1){+.+.}-{0:0}, at: __mptcp_close_ssk+0x10e/0x4c4 net/mptcp/protocol.c:2322 3 locks held by kworker/1:2/7655: #0: ff60000008220d38 ((wq_completion)events){+.+.}-{0:0}, at: set_work_data kernel/workqueue.c:635 [inline] #0: ff60000008220d38 ((wq_completion)events){+.+.}-{0:0}, at: set_work_pool_and_clear_pending kernel/workqueue.c:663 [inline] #0: ff60000008220d38 ((wq_completion)events){+.+.}-{0:0}, at: process_one_work+0x510/0x102e kernel/workqueue.c:2260 #1: ff200000049f7cf0 ((work_completion)(&msk->work)){+.+.}-{0:0}, at: set_work_data kernel/workqueue.c:635 [inline] #1: ff200000049f7cf0 ((work_completion)(&msk->work)){+.+.}-{0:0}, at: set_work_pool_and_clear_pending kernel/workqueue.c:663 [inline] #1: ff200000049f7cf0 ((work_completion)(&msk->work)){+.+.}-{0:0}, at: process_one_work+0x510/0x102e kernel/workqueue.c:2260 #2: ff6000002b7e8130 (sk_lock-AF_INET){+.+.}-{0:0}, at: lock_sock include/net/sock.h:1725 [inline] #2: ff6000002b7e8130 (sk_lock-AF_INET){+.+.}-{0:0}, at: mptcp_worker+0x9c/0xa34 net/mptcp/protocol.c:2607 3 locks held by syz-executor.1/8021: #0: ff6000002b7e8130 (sk_lock-AF_INET){+.+.}-{0:0}, at: lock_sock include/net/sock.h:1725 [inline] #0: ff6000002b7e8130 (sk_lock-AF_INET){+.+.}-{0:0}, at: mptcp_sendmsg+0xd2/0xef8 net/mptcp/protocol.c:1708 #1: ff6000002bb30d70 (k-sk_lock-AF_INET){+.+.}-{0:0}, at: lock_sock include/net/sock.h:1725 [inline] #1: ff6000002bb30d70 (k-sk_lock-AF_INET){+.+.}-{0:0}, at: mptcp_sendmsg_fastopen net/mptcp/protocol.c:1672 [inline] #1: ff6000002bb30d70 (k-sk_lock-AF_INET){+.+.}-{0:0}, at: mptcp_sendmsg+0xc26/0xef8 net/mptcp/protocol.c:1715 #2: ff6000002bb30d70 (k-sk_lock-AF_INET/1){+.+.}-{0:0}, at: __mptcp_close_ssk+0x10e/0x4c4 net/mptcp/protocol.c:2322 =============================================