[ 25.441073][ T825] mptcp_connect (825) used greatest stack depth: 23568 bytes left [ 25.441096][ T825] BUG: sleeping function called from invalid context at ./include/linux/sched/mm.h:322 [ 25.441099][ T825] in_atomic(): 1, irqs_disabled(): 1, non_block: 0, pid: 825, name: mptcp_connect [ 25.441100][ T825] preempt_count: 2, expected: 0 [ 25.441101][ T825] RCU nest depth: 0, expected: 0 [ 25.441102][ T825] locks held by mptcp_connect/825: 5, last CPU#3: [ 25.441104][ T825] #0: ffffffff862267b8 (low_water_lock){+.+.}-{3:3}, at: do_exit+0x887/0xdc0 [ 25.441118][ T825] #1: ffffffff8638dcc0 (console_lock){+.+.}-{0:0}, at: vprintk_emit+0x320/0x3e0 [ 25.441124][ T825] #2: ffffffff8638dd38 (console_srcu){....}-{0:0}, at: console_flush_one_record+0x106/0x710 [ 25.441127][ T825] #3: ffffffff862ad660 (console_owner){....}-{0:0}, at: console_lock_spinning_enable+0x40/0x60 [ 25.441131][ T825] #4: ffffffff862ad560 (printk_legacy_map-wait-type-override){....}-{3:3}, at: console_emit_next_record+0x1df/0x4c0 [ 25.441135][ T825] irq event stamp: 188010 [ 25.441136][ T825] hardirqs last enabled at (188009): [] __down_trylock_console_sem+0x86/0xa0 [ 25.441138][ T825] hardirqs last disabled at (188010): [] console_emit_next_record+0x3d4/0x4c0 [ 25.441140][ T825] softirqs last enabled at (187098): [] mptcp_close+0x2d/0x90 [ 25.441144][ T825] softirqs last disabled at (187096): [] release_sock+0x21/0x240 [ 25.441148][ T825] Preemption disabled at: [ 25.441148][ T825] [<0000000000000000>] 0x0 [ 25.441155][ T825] CPU: 3 UID: 0 PID: 825 Comm: mptcp_connect Tainted: G W 7.2.0-virtme #1 PREEMPT(full) [ 25.441159][ T825] Tainted: [W]=WARN [ 25.441160][ T825] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011 [ 25.441162][ T825] Call Trace: [ 25.441163][ T825] [ 25.441165][ T825] dump_stack_lvl+0x6f/0xa0 [ 25.441171][ T825] __might_resched.cold+0x1fe/0x2c1 [ 25.441176][ T825] ? perf_trace_sched_switch+0x7c0/0x7c0 [ 25.441180][ T825] ? __kmalloc_noprof+0xdb/0x760 [ 25.441184][ T825] __kmalloc_noprof+0x443/0x760 [ 25.441186][ T825] ? alloc_buf.isra.0+0x4b/0x260 [ 25.441192][ T825] ? do_raw_spin_unlock+0x59/0x250 [ 25.441195][ T825] alloc_buf.isra.0+0x4b/0x260 [ 25.441199][ T825] put_chars+0x1e1/0x2f0 [ 25.441202][ T825] ? __send_to_port+0x420/0x420 [ 25.441204][ T825] ? rcu_lockdep_current_cpu_online+0x3f/0x1b0 [ 25.441208][ T825] ? validate_chain+0x38b/0xc20 [ 25.441214][ T825] hvc_console_print+0x292/0x780 [ 25.441221][ T825] ? hvc_write+0x3a0/0x3a0 [ 25.441224][ T825] ? rcu_is_watching+0x16/0xd0 [ 25.441226][ T825] ? lock_acquire+0x13c/0x160 [ 25.441229][ T825] console_emit_next_record+0x22f/0x4c0 [ 25.441233][ T825] ? devkmsg_read+0x4b0/0x4b0 [ 25.441235][ T825] ? console_flush_one_record+0x106/0x710 [ 25.441238][ T825] ? rcu_is_watching+0x16/0xd0 [ 25.441240][ T825] ? lock_acquire+0x13c/0x160 [ 25.441243][ T825] console_flush_one_record+0x46f/0x710 [ 25.441247][ T825] ? console_emit_next_record+0x4c0/0x4c0 [ 25.441249][ T825] ? __lock_acquire+0x518/0xc20 [ 25.441253][ T825] console_unlock+0xee/0x1f0 [ 25.441256][ T825] ? console_flush_one_record+0x710/0x710 [ 25.441258][ T825] ? rcu_is_watching+0x16/0xd0 [ 25.441260][ T825] ? lock_acquire+0x60/0x160 [ 25.441263][ T825] ? __down_trylock_console_sem+0x5e/0xa0 [ 25.441264][ T825] ? vprintk_emit+0x320/0x3e0 [ 25.441268][ T825] vprintk_emit+0x37c/0x3e0 [ 25.441271][ T825] ? wake_up_klogd_work_func+0x90/0x90 [ 25.441273][ T825] ? do_raw_spin_unlock+0x59/0x250 [ 25.441275][ T825] ? __lock_acquire+0x518/0xc20 [ 25.441279][ T825] _printk+0xc7/0x100 [ 25.441282][ T825] ? snapshot_read.cold+0x21/0x21 [ 25.441285][ T825] ? do_raw_spin_lock+0x131/0x280 [ 25.441287][ T825] ? __rwlock_init+0x150/0x150 [ 25.441291][ T825] ? do_raw_spin_lock+0x131/0x280 [ 25.441293][ T825] do_exit.cold+0x82/0x9c [ 25.441297][ T825] ? exit_notify+0x890/0x890 [ 25.441299][ T825] ? __lock_release.isra.0+0x69/0x1a0 [ 25.441301][ T825] ? rcu_is_watching+0x16/0xd0 [ 25.441305][ T825] do_group_exit+0xb8/0x370 [ 25.441309][ T825] __x64_sys_exit_group+0x3c/0x50 [ 25.441311][ T825] x64_sys_call+0x1567/0x1570 [ 25.441313][ T825] do_syscall_64+0xff/0x530 [ 25.441315][ T825] ? exc_page_fault+0xee/0x100 [ 25.441319][ T825] entry_SYSCALL_64_after_hwframe+0x4b/0x53 [ 25.441321][ T825] RIP: 0033:0x7fce4d3691b8 [ 25.441323][ T825] Code: Unable to access opcode bytes at 0x7fce4d36918e. [ 25.441324][ T825] RSP: 002b:00007ffe35532618 EFLAGS: 00000246 ORIG_RAX: 00000000000000e7 [ 25.441327][ T825] RAX: ffffffffffffffda RBX: 00007fce4d499f88 RCX: 00007fce4d3691b8 [ 25.441328][ T825] RDX: 00007fce4d2a6a48 RSI: ffffffffffffffb0 RDI: 0000000000000000 [ 25.441329][ T825] RBP: 00007ffe35532670 R08: 0000000000000000 R09: 0000000000000000 [ 25.441330][ T825] R10: 00007ffe355324b0 R11: 0000000000000246 R12: 0000000000000001 [ 25.441331][ T825] R13: 0000000000000000 R14: 00007fce4d498680 R15: 00007fce4d499fa0 [ 25.441338][ T825]