INFO: task kworker/1:7:5172 blocked for more than 143 seconds.
Not tainted 6.2.0-rc1-syzkaller-00043-g2258c2dc850b #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:kworker/1:7 state:D stack:24352 pid:5172 ppid:2 flags:0x00004000
Workqueue: events mptcp_worker
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_worker+0x78/0xff0 net/mptcp/protocol.c:2607
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
INFO: task syz-executor.3:11666 blocked for more than 143 seconds.
Not tainted 6.2.0-rc1-syzkaller-00043-g2258c2dc850b #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:syz-executor.3 state:D stack:25896 pid:11666 ppid:5123 flags:0x20004004
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_32_irqs_on arch/x86/entry/common.c:112 [inline]
__do_fast_syscall_32+0x65/0xf0 arch/x86/entry/common.c:178
do_fast_syscall_32+0x33/0x70 arch/x86/entry/common.c:203
entry_SYSENTER_compat_after_hwframe+0x70/0x82
RIP: 0023:0xf7fb3549
RSP: 002b:00000000f7fae5cc EFLAGS: 00000296 ORIG_RAX: 0000000000000172
RAX: ffffffffffffffda RBX: 0000000000000003 RCX: 0000000020000700
RDX: 00000000240080d0 RSI: 0000000000000000 RDI: 0000000000000000
RBP: 0000000000000000 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 0000000000000000 R14: 0000000000000000 R15: 0000000000000000
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
2 locks held by getty/4747:
#0: ffff88802bed3098 (&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
3 locks held by kworker/1:7/5172:
#0: ffff888012470d38 ((wq_completion)events){+.+.}-{0:0}, at: arch_atomic64_set arch/x86/include/asm/atomic64_64.h:34 [inline]
#0: ffff888012470d38 ((wq_completion)events){+.+.}-{0:0}, at: arch_atomic_long_set include/linux/atomic/atomic-long.h:41 [inline]
#0: ffff888012470d38 ((wq_completion)events){+.+.}-{0:0}, at: atomic_long_set include/linux/atomic/atomic-instrumented.h:1280 [inline]
#0: ffff888012470d38 ((wq_completion)events){+.+.}-{0:0}, at: set_work_data kernel/workqueue.c:636 [inline]
#0: ffff888012470d38 ((wq_completion)events){+.+.}-{0:0}, at: set_work_pool_and_clear_pending kernel/workqueue.c:663 [inline]
#0: ffff888012470d38 ((wq_completion)events){+.+.}-{0:0}, at: process_one_work+0x86d/0x1710 kernel/workqueue.c:2260
#1: ffffc9000495fda8 ((work_completion)(&msk->work)){+.+.}-{0:0}, at: process_one_work+0x8a1/0x1710 kernel/workqueue.c:2264
#2: ffff888078561830 (sk_lock-AF_INET){+.+.}-{0:0}, at: lock_sock include/net/sock.h:1725 [inline]
#2: ffff888078561830 (sk_lock-AF_INET){+.+.}-{0:0}, at: mptcp_worker+0x78/0xff0 net/mptcp/protocol.c:2607
3 locks held by syz-executor.3/11666:
#0: ffff888078561830 (sk_lock-AF_INET){+.+.}-{0:0}, at: lock_sock include/net/sock.h:1725 [inline]
#0: ffff888078561830 (sk_lock-AF_INET){+.+.}-{0:0}, at: mptcp_sendmsg+0xce/0x1910 net/mptcp/protocol.c:1708
#1: ffff8880247b3e70 (k-sk_lock-AF_INET){+.+.}-{0:0}, at: lock_sock include/net/sock.h:1725 [inline]
#1: ffff8880247b3e70 (k-sk_lock-AF_INET){+.+.}-{0:0}, at: mptcp_sendmsg_fastopen net/mptcp/protocol.c:1672 [inline]
#1: ffff8880247b3e70 (k-sk_lock-AF_INET){+.+.}-{0:0}, at: mptcp_sendmsg+0x1296/0x1910 net/mptcp/protocol.c:1715
#2: ffff8880247b3e70 (k-sk_lock-AF_INET/1){+.+.}-{0:0}, at: __mptcp_close_ssk+0x19e/0x780 net/mptcp/protocol.c:2322
3 locks held by syz-executor.3/11739:
#0: ffff8880785623b0 (sk_lock-AF_INET){+.+.}-{0:0}, at: lock_sock include/net/sock.h:1725 [inline]
#0: ffff8880785623b0 (sk_lock-AF_INET){+.+.}-{0:0}, at: mptcp_sendmsg+0xce/0x1910 net/mptcp/protocol.c:1708
#1: ffff8880247b6f70 (k-sk_lock-AF_INET){+.+.}-{0:0}, at: lock_sock include/net/sock.h:1725 [inline]
#1: ffff8880247b6f70 (k-sk_lock-AF_INET){+.+.}-{0:0}, at: mptcp_sendmsg_fastopen net/mptcp/protocol.c:1672 [inline]
#1: ffff8880247b6f70 (k-sk_lock-AF_INET){+.+.}-{0:0}, at: mptcp_sendmsg+0x1296/0x1910 net/mptcp/protocol.c:1715
#2: ffff8880247b6f70 (k-sk_lock-AF_INET/1){+.+.}-{0:0}, at: __mptcp_close_ssk+0x19e/0x780 net/mptcp/protocol.c:2322
3 locks held by syz-executor.3/11788:
#0: ffff888078562f30 (sk_lock-AF_INET){+.+.}-{0:0}, at: lock_sock include/net/sock.h:1725 [inline]
#0: ffff888078562f30 (sk_lock-AF_INET){+.+.}-{0:0}, at: mptcp_sendmsg+0xce/0x1910 net/mptcp/protocol.c:1708
#1: ffff8880247b4ab0 (k-sk_lock-AF_INET){+.+.}-{0:0}, at: lock_sock include/net/sock.h:1725 [inline]
#1: ffff8880247b4ab0 (k-sk_lock-AF_INET){+.+.}-{0:0}, at: mptcp_sendmsg_fastopen net/mptcp/protocol.c:1672 [inline]
#1: ffff8880247b4ab0 (k-sk_lock-AF_INET){+.+.}-{0:0}, at: mptcp_sendmsg+0x1296/0x1910 net/mptcp/protocol.c:1715
#2: ffff8880247b4ab0 (k-sk_lock-AF_INET/1){+.+.}-{0:0}, at: __mptcp_close_ssk+0x19e/0x780 net/mptcp/protocol.c:2322
=============================================
NMI backtrace for cpu 0
CPU: 0 PID: 28 Comm: khungtaskd Not tainted 6.2.0-rc1-syzkaller-00043-g2258c2dc850b #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 0 to CPUs 1:
NMI backtrace for cpu 1 skipped: idling at native_safe_halt arch/x86/include/asm/irqflags.h:51 [inline]
NMI backtrace for cpu 1 skipped: idling at arch_safe_halt arch/x86/include/asm/irqflags.h:89 [inline]
NMI backtrace for cpu 1 skipped: idling at acpi_safe_halt drivers/acpi/processor_idle.c:112 [inline]
NMI backtrace for cpu 1 skipped: idling at acpi_idle_do_entry+0x1fd/0x2a0 drivers/acpi/processor_idle.c:570