INFO: task syz-executor.4:10863 blocked for more than 143 seconds. Not tainted 6.1.0-syzkaller-04256-g609d3bc62305 #0 "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. task:syz-executor.4 state:D stack:29216 pid:10863 ppid:5122 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] mptcp_stream_connect+0x49/0x110 net/mptcp/protocol.c:3620 __sys_connect_file+0x153/0x1a0 net/socket.c:1976 __sys_connect+0x165/0x1a0 net/socket.c:1993 __do_sys_connect net/socket.c:2003 [inline] __se_sys_connect net/socket.c:2000 [inline] __x64_sys_connect+0x73/0xb0 net/socket.c:2000 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: 0033:0x7f143a68c0a9 RSP: 002b:00007f143b4c7168 EFLAGS: 00000246 ORIG_RAX: 000000000000002a RAX: ffffffffffffffda RBX: 00007f143a7abf80 RCX: 00007f143a68c0a9 RDX: 0000000000000010 RSI: 0000000020000480 RDI: 0000000000000003 RBP: 00007f143a6e7ae9 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 R13: 00007fff9a9486df R14: 00007f143b4c7300 R15: 0000000000022000 INFO: task syz-executor.4:10864 blocked for more than 144 seconds. Not tainted 6.1.0-syzkaller-04256-g609d3bc62305 #0 "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. task:syz-executor.4 state:D stack:26400 pid:10864 ppid:5122 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_sendto+0x23a/0x340 net/socket.c:2117 __do_sys_sendto net/socket.c:2129 [inline] __se_sys_sendto net/socket.c:2125 [inline] __x64_sys_sendto+0xe1/0x1b0 net/socket.c:2125 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: 0033:0x7f143a68c0a9 RSP: 002b:00007f143b4a6168 EFLAGS: 00000246 ORIG_RAX: 000000000000002c RAX: ffffffffffffffda RBX: 00007f143a7ac050 RCX: 00007f143a68c0a9 RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000003 RBP: 00007f143a6e7ae9 R08: 0000000020000040 R09: 0000000000000010 R10: 000000002004c0d5 R11: 0000000000000246 R12: 0000000000000000 R13: 00007fff9a9486df R14: 00007f143b4a6300 R15: 0000000000022000 Showing all locks held in the system: 1 lock held by rcu_tasks_kthre/12: #0: ffffffff8c790c70 (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: ffffffff8c790970 (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: ffffffff8c7917c0 (rcu_read_lock){....}-{1:2}, at: debug_show_all_locks+0x57/0x264 kernel/locking/lockdep.c:6494 2 locks held by getty/4747: #0: ffff88802bdb0098 (&tty->ldisc_sem){++++}-{0:0}, at: tty_ldisc_ref_wait+0x26/0x80 drivers/tty/tty_ldisc.c:244 #1: ffffc900015902f0 (&ldata->atomic_read_lock){+.+.}-{3:3}, at: n_tty_read+0xef4/0x13e0 drivers/tty/n_tty.c:2177 1 lock held by syz-executor.0/5108: #0: ffff8880b983b598 (&rq->__lock){-.-.}-{2:2}, at: raw_spin_rq_lock_nested+0x2f/0x120 kernel/sched/core.c:537 2 locks held by kworker/0:6/5169: #0: ffff888012472538 ((wq_completion)rcu_gp){+.+.}-{0:0}, at: arch_atomic64_set arch/x86/include/asm/atomic64_64.h:34 [inline] #0: ffff888012472538 ((wq_completion)rcu_gp){+.+.}-{0:0}, at: arch_atomic_long_set include/linux/atomic/atomic-long.h:41 [inline] #0: ffff888012472538 ((wq_completion)rcu_gp){+.+.}-{0:0}, at: atomic_long_set include/linux/atomic/atomic-instrumented.h:1280 [inline] #0: ffff888012472538 ((wq_completion)rcu_gp){+.+.}-{0:0}, at: set_work_data kernel/workqueue.c:636 [inline] #0: ffff888012472538 ((wq_completion)rcu_gp){+.+.}-{0:0}, at: set_work_pool_and_clear_pending kernel/workqueue.c:663 [inline] #0: ffff888012472538 ((wq_completion)rcu_gp){+.+.}-{0:0}, at: process_one_work+0x86d/0x1710 kernel/workqueue.c:2260 #1: ffffc900049efda8 ((work_completion)(&rew->rew_work)){+.+.}-{0:0}, at: process_one_work+0x8a1/0x1710 kernel/workqueue.c:2264 2 locks held by kworker/u4:8/6859: 1 lock held by syz-executor.4/10863: #0: ffff88807639c630 (sk_lock-AF_INET){+.+.}-{0:0}, at: lock_sock include/net/sock.h:1725 [inline] #0: ffff88807639c630 (sk_lock-AF_INET){+.+.}-{0:0}, at: mptcp_stream_connect+0x49/0x110 net/mptcp/protocol.c:3620 3 locks held by syz-executor.4/10864: #0: ffff88807639c630 (sk_lock-AF_INET){+.+.}-{0:0}, at: lock_sock include/net/sock.h:1725 [inline] #0: ffff88807639c630 (sk_lock-AF_INET){+.+.}-{0:0}, at: mptcp_sendmsg+0xce/0x1910 net/mptcp/protocol.c:1708 #1: ffff8880272fa5f0 (k-sk_lock-AF_INET){+.+.}-{0:0}, at: lock_sock include/net/sock.h:1725 [inline] #1: ffff8880272fa5f0 (k-sk_lock-AF_INET){+.+.}-{0:0}, at: mptcp_sendmsg_fastopen net/mptcp/protocol.c:1672 [inline] #1: ffff8880272fa5f0 (k-sk_lock-AF_INET){+.+.}-{0:0}, at: mptcp_sendmsg+0x1296/0x1910 net/mptcp/protocol.c:1715 #2: ffff8880272fa5f0 (k-sk_lock-AF_INET/1){+.+.}-{0:0}, at: __mptcp_close_ssk+0x19e/0x780 net/mptcp/protocol.c:2322 4 locks held by udevd/10903: 2 locks held by udevd/11084: 2 locks held by syz-executor.3/16842: #0: ffff888046d07a10 (&sb->s_type->i_mutex_key#10){+.+.}-{3:3}, at: inode_lock include/linux/fs.h:756 [inline] #0: ffff888046d07a10 (&sb->s_type->i_mutex_key#10){+.+.}-{3:3}, at: __sock_release+0x86/0x280 net/socket.c:649 #1: ffffffff8c79c478 (rcu_state.exp_mutex){+.+.}-{3:3}, at: exp_funnel_lock kernel/rcu/tree_exp.h:292 [inline] #1: ffffffff8c79c478 (rcu_state.exp_mutex){+.+.}-{3:3}, at: synchronize_rcu_expedited+0x5df/0x780 kernel/rcu/tree_exp.h:946 2 locks held by syz-executor.1/16865: #0: ffff888046d0e810 (&sb->s_type->i_mutex_key#10){+.+.}-{3:3}, at: inode_lock include/linux/fs.h:756 [inline] #0: ffff888046d0e810 (&sb->s_type->i_mutex_key#10){+.+.}-{3:3}, at: __sock_release+0x86/0x280 net/socket.c:649 #1: ffffffff8c79c478 (rcu_state.exp_mutex){+.+.}-{3:3}, at: exp_funnel_lock kernel/rcu/tree_exp.h:324 [inline] #1: ffffffff8c79c478 (rcu_state.exp_mutex){+.+.}-{3:3}, at: synchronize_rcu_expedited+0x24f/0x780 kernel/rcu/tree_exp.h:946 ============================================= NMI backtrace for cpu 1 CPU: 1 PID: 28 Comm: khungtaskd Not tainted 6.1.0-syzkaller-04256-g609d3bc62305 #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: 5179 Comm: kworker/u4:6 Not tainted 6.1.0-syzkaller-04256-g609d3bc62305 #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/26/2022 Workqueue: phy14 ieee80211_iface_work RIP: 0010:preempt_latency_start kernel/sched/core.c:5688 [inline] RIP: 0010:preempt_latency_start kernel/sched/core.c:5683 [inline] RIP: 0010:preempt_count_add+0x96/0x140 kernel/sched/core.c:5711 Code: 8b 5c 24 10 48 89 df e8 f8 6e 0d 00 85 c0 75 35 65 48 8b 2c 25 00 ac 03 00 48 8d bd 28 14 00 00 48 b8 00 00 00 00 00 fc ff df <48> 89 fa 48 c1 ea 03 80 3c 02 00 0f 85 81 00 00 00 48 89 9d 28 14 RSP: 0018:ffffc90004a2f410 EFLAGS: 00000246 RAX: dffffc0000000000 RBX: ffffffff8138846e RCX: 1ffffffff2380b40 RDX: 0000000000000000 RSI: ffffc90004a2f4b8 RDI: ffff88807cbb6be8 RBP: ffff88807cbb57c0 R08: ffffffff8ef653b0 R09: ffffc90004a2f51c R10: fffff52000945ea8 R11: ffffc90004a2f4e0 R12: fffff52000945e9f R13: ffffc90004a2f4e8 R14: ffffc90004a2f520 R15: ffffc90004a2f4e8 FS: 0000000000000000(0000) GS:ffff8880b9800000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007f555fd821b8 CR3: 00000000201a9000 CR4: 00000000003506f0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: unwind_next_frame+0xae/0x1d00 arch/x86/kernel/unwind_orc.c:452 __unwind_start+0x51f/0x800 arch/x86/kernel/unwind_orc.c:736 unwind_start arch/x86/include/asm/unwind.h:64 [inline] arch_stack_walk+0x60/0xf0 arch/x86/kernel/stacktrace.c:24 stack_trace_save+0x90/0xc0 kernel/stacktrace.c:122 kasan_save_stack+0x22/0x40 mm/kasan/common.c:45 kasan_set_track+0x25/0x30 mm/kasan/common.c:52 ____kasan_kmalloc mm/kasan/common.c:371 [inline] ____kasan_kmalloc mm/kasan/common.c:330 [inline] __kasan_kmalloc+0xa5/0xb0 mm/kasan/common.c:380 kasan_kmalloc include/linux/kasan.h:211 [inline] __do_kmalloc_node mm/slab_common.c:968 [inline] __kmalloc+0x5a/0xd0 mm/slab_common.c:981 kmalloc include/linux/slab.h:584 [inline] kzalloc include/linux/slab.h:720 [inline] ieee802_11_parse_elems_full+0x106/0x1330 net/mac80211/util.c:1655 ieee802_11_parse_elems_crc net/mac80211/ieee80211_i.h:2260 [inline] ieee802_11_parse_elems net/mac80211/ieee80211_i.h:2267 [inline] ieee80211_rx_mgmt_probe_beacon net/mac80211/ibss.c:1605 [inline] ieee80211_ibss_rx_queued_mgmt+0xd58/0x3160 net/mac80211/ibss.c:1638 ieee80211_iface_process_skb net/mac80211/iface.c:1581 [inline] ieee80211_iface_work+0xa4d/0xd70 net/mac80211/iface.c:1635 process_one_work+0x9bf/0x1710 kernel/workqueue.c:2289 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