INFO: task syz-executor.5:12056 blocked for more than 143 seconds. Not tainted 6.2.0-rc2-syzkaller-00024-g512dee0c00ad #0 "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. task:syz-executor.5 state:D stack:25816 pid:12056 ppid:5112 flags:0x00004004 Call Trace: context_switch kernel/sched/core.c:5244 [inline] __schedule+0xb8a/0x5450 kernel/sched/core.c:6555 schedule+0xde/0x1b0 kernel/sched/core.c:6631 __lock_sock+0x141/0x260 net/core/sock.c:2904 lock_sock_nested+0xda/0xf0 net/core/sock.c:3475 lock_sock include/net/sock.h:1725 [inline] inet_wait_for_connect net/ipv4/af_inet.c:600 [inline] __inet_stream_connect+0x776/0xed0 net/ipv4/af_inet.c:690 mptcp_sendmsg_fastopen net/mptcp/protocol.c:1683 [inline] mptcp_sendmsg+0xd4d/0x1910 net/mptcp/protocol.c:1715 inet_sendmsg+0x9d/0xe0 net/ipv4/af_inet.c:827 sock_sendmsg_nosec net/socket.c:714 [inline] sock_sendmsg+0xd3/0x120 net/socket.c:734 ____sys_sendmsg+0x712/0x8c0 net/socket.c:2476 ___sys_sendmsg+0x110/0x1b0 net/socket.c:2530 __sys_sendmsg+0xf7/0x1c0 net/socket.c:2559 do_syscall_x64 arch/x86/entry/common.c:50 [inline] do_syscall_64+0x39/0xb0 arch/x86/entry/common.c:80 entry_SYSCALL_64_after_hwframe+0x63/0xcd RIP: 0033:0x7f4cd008c0c9 RSP: 002b:00007f4cd0d72168 EFLAGS: 00000246 ORIG_RAX: 000000000000002e RAX: ffffffffffffffda RBX: 00007f4cd01abf80 RCX: 00007f4cd008c0c9 RDX: 0000000020000000 RSI: 00000000200002c0 RDI: 0000000000000003 RBP: 00007f4cd00e7ae9 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 R13: 00007f4cd02cfb1f R14: 00007f4cd0d72300 R15: 0000000000022000 INFO: task syz-executor.5:12064 blocked for more than 143 seconds. Not tainted 6.2.0-rc2-syzkaller-00024-g512dee0c00ad #0 "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. task:syz-executor.5 state:D stack:28328 pid:12064 ppid:5112 flags:0x00004004 Call Trace: context_switch kernel/sched/core.c:5244 [inline] __schedule+0xb8a/0x5450 kernel/sched/core.c:6555 schedule+0xde/0x1b0 kernel/sched/core.c:6631 __lock_sock+0x141/0x260 net/core/sock.c:2904 lock_sock_nested+0xda/0xf0 net/core/sock.c:3475 __mptcp_close_ssk+0x19e/0x780 net/mptcp/protocol.c:2322 mptcp_destroy_common+0x169/0x650 net/mptcp/protocol.c:3152 mptcp_disconnect+0xb7/0x450 net/mptcp/protocol.c:3003 __inet_stream_connect+0xc95/0xed0 net/ipv4/af_inet.c:717 tcp_sendmsg_fastopen+0x3c4/0x710 net/ipv4/tcp.c:1200 mptcp_sendmsg_fastopen net/mptcp/protocol.c:1676 [inline] mptcp_sendmsg+0x1359/0x1910 net/mptcp/protocol.c:1715 inet_sendmsg+0x9d/0xe0 net/ipv4/af_inet.c:827 sock_sendmsg_nosec net/socket.c:714 [inline] sock_sendmsg+0xd3/0x120 net/socket.c:734 ____sys_sendmsg+0x712/0x8c0 net/socket.c:2476 ___sys_sendmsg+0x110/0x1b0 net/socket.c:2530 __sys_sendmsg+0xf7/0x1c0 net/socket.c:2559 do_syscall_x64 arch/x86/entry/common.c:50 [inline] do_syscall_64+0x39/0xb0 arch/x86/entry/common.c:80 entry_SYSCALL_64_after_hwframe+0x63/0xcd RIP: 0033:0x7f4cd008c0c9 RSP: 002b:00007f4cd0d51168 EFLAGS: 00000246 ORIG_RAX: 000000000000002e RAX: ffffffffffffffda RBX: 00007f4cd01ac050 RCX: 00007f4cd008c0c9 RDX: 0000000024008080 RSI: 0000000020000500 RDI: 0000000000000003 RBP: 00007f4cd00e7ae9 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 R13: 00007f4cd02cfb1f R14: 00007f4cd0d51300 R15: 0000000000022000 Showing all locks held in the system: 1 lock held by rcu_tasks_kthre/12: #0: ffffffff8c790f30 (rcu_tasks.tasks_gp_mutex){+.+.}-{3:3}, at: rcu_tasks_one_gp+0x26/0xc70 kernel/rcu/tasks.h:507 1 lock held by rcu_tasks_trace/13: #0: ffffffff8c790c30 (rcu_tasks_trace.tasks_gp_mutex){+.+.}-{3:3}, at: rcu_tasks_one_gp+0x26/0xc70 kernel/rcu/tasks.h:507 1 lock held by khungtaskd/28: #0: ffffffff8c791a80 (rcu_read_lock){....}-{1:2}, at: debug_show_all_locks+0x57/0x264 kernel/locking/lockdep.c:6494 1 lock held by klogd/4421: #0: ffff8880b983b598 (&rq->__lock){-.-.}-{2:2}, at: raw_spin_rq_lock_nested kernel/sched/core.c:545 [inline] #0: ffff8880b983b598 (&rq->__lock){-.-.}-{2:2}, at: raw_spin_rq_lock_nested+0x90/0x120 kernel/sched/core.c:530 2 locks held by getty/4750: #0: ffff888149f4a098 (&tty->ldisc_sem){++++}-{0:0}, at: tty_ldisc_ref_wait+0x26/0x80 drivers/tty/tty_ldisc.c:244 #1: ffffc900015a02f0 (&ldata->atomic_read_lock){+.+.}-{3:3}, at: n_tty_read+0xef4/0x13e0 drivers/tty/n_tty.c:2177 1 lock held by syz-executor.5/12056: #0: ffff88807df49830 (sk_lock-AF_INET){+.+.}-{0:0}, at: lock_sock include/net/sock.h:1725 [inline] #0: ffff88807df49830 (sk_lock-AF_INET){+.+.}-{0:0}, at: inet_wait_for_connect net/ipv4/af_inet.c:600 [inline] #0: ffff88807df49830 (sk_lock-AF_INET){+.+.}-{0:0}, at: __inet_stream_connect+0x776/0xed0 net/ipv4/af_inet.c:690 3 locks held by syz-executor.5/12064: #0: ffff88807df49830 (sk_lock-AF_INET){+.+.}-{0:0}, at: lock_sock include/net/sock.h:1725 [inline] #0: ffff88807df49830 (sk_lock-AF_INET){+.+.}-{0:0}, at: mptcp_sendmsg+0xce/0x1910 net/mptcp/protocol.c:1708 #1: ffff88807ce0cab0 (k-sk_lock-AF_INET){+.+.}-{0:0}, at: lock_sock include/net/sock.h:1725 [inline] #1: ffff88807ce0cab0 (k-sk_lock-AF_INET){+.+.}-{0:0}, at: mptcp_sendmsg_fastopen net/mptcp/protocol.c:1672 [inline] #1: ffff88807ce0cab0 (k-sk_lock-AF_INET){+.+.}-{0:0}, at: mptcp_sendmsg+0x1296/0x1910 net/mptcp/protocol.c:1715 #2: ffff88807ce0cab0 (k-sk_lock-AF_INET/1){+.+.}-{0:0}, at: __mptcp_close_ssk+0x19e/0x780 net/mptcp/protocol.c:2322 ============================================= NMI backtrace for cpu 1 CPU: 1 PID: 28 Comm: khungtaskd Not tainted 6.2.0-rc2-syzkaller-00024-g512dee0c00ad #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/26/2022 Call Trace: __dump_stack lib/dump_stack.c:88 [inline] dump_stack_lvl+0xd1/0x138 lib/dump_stack.c:106 nmi_cpu_backtrace.cold+0x24/0x18a lib/nmi_backtrace.c:111 nmi_trigger_cpumask_backtrace+0x333/0x3c0 lib/nmi_backtrace.c:62 trigger_all_cpu_backtrace include/linux/nmi.h:148 [inline] check_hung_uninterruptible_tasks kernel/hung_task.c:220 [inline] watchdog+0xc75/0xfc0 kernel/hung_task.c:377 kthread+0x2e8/0x3a0 kernel/kthread.c:376 ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:308 Sending NMI from CPU 1 to CPUs 0: NMI backtrace for cpu 0 CPU: 0 PID: 1300 Comm: kworker/u4:5 Not tainted 6.2.0-rc2-syzkaller-00024-g512dee0c00ad #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/26/2022 Workqueue: phy12 ieee80211_iface_work RIP: 0010:cpumask_check include/linux/cpumask.h:117 [inline] RIP: 0010:cpumask_test_cpu include/linux/cpumask.h:444 [inline] RIP: 0010:cpu_online include/linux/cpumask.h:1030 [inline] RIP: 0010:trace_workqueue_execute_start include/trace/events/workqueue.h:82 [inline] RIP: 0010:process_one_work+0x934/0x1710 kernel/workqueue.c:2288 Code: e8 a1 c3 2e 00 65 8b 1d 46 1d b1 7e 48 b8 00 00 00 00 00 fc ff df 48 89 ea 48 c1 ea 03 0f b6 14 02 48 89 e8 83 e0 07 83 c0 03 <38> d0 7c 08 84 d2 0f 85 86 0b 00 00 44 8b 25 49 49 20 0d 89 df 44 RSP: 0018:ffffc9000577fd18 EFLAGS: 00000206 RAX: 0000000000000003 RBX: 0000000000000000 RCX: 0000000000000000 RDX: 0000000000000000 RSI: ffffffff81528ebf RDI: 0000000000000000 RBP: ffffffff8e72d840 R08: 0000000000000000 R09: ffffffff91336baf R10: fffffbfff2266d75 R11: 0000000000000000 R12: ffff88802a725840 R13: ffff88802a725830 R14: ffff88802136c900 R15: ffff888012479800 FS: 0000000000000000(0000) GS:ffff8880b9800000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 0000001b31d26000 CR3: 00000000419db000 CR4: 00000000003506f0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: worker_thread+0x669/0x1090 kernel/workqueue.c:2436 kthread+0x2e8/0x3a0 kernel/kthread.c:376 ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:308