[ 10.031911][ T176] ip (176) used greatest stack depth: 23728 bytes left [ 10.031932][ T176] BUG: sleeping function called from invalid context at ./include/linux/sched/mm.h:322 [ 10.031935][ T176] in_atomic(): 1, irqs_disabled(): 1, non_block: 0, pid: 176, name: ip [ 10.031936][ T176] preempt_count: 2, expected: 0 [ 10.031937][ T176] RCU nest depth: 0, expected: 0 [ 10.031938][ T176] locks held by ip/176: 5, last CPU#0: [ 10.031941][ T176] #0: ffffffffb20127b8 (low_water_lock){+.+.}-{3:3}, at: do_exit+0x887/0xdc0 [ 10.031953][ T176] #1: ffffffffb2179cc0 (console_lock){+.+.}-{0:0}, at: vprintk_emit+0x320/0x3e0 [ 10.031958][ T176] #2: ffffffffb2179d38 (console_srcu){....}-{0:0}, at: console_flush_one_record+0x106/0x710 [ 10.031962][ T176] #3: ffffffffb2099660 (console_owner){....}-{0:0}, at: console_lock_spinning_enable+0x40/0x60 [ 10.031966][ T176] #4: ffffffffb2099560 (printk_legacy_map-wait-type-override){....}-{3:3}, at: console_emit_next_record+0x1df/0x4c0 [ 10.031970][ T176] irq event stamp: 29496 [ 10.031971][ T176] hardirqs last enabled at (29495): [] __down_trylock_console_sem+0x86/0xa0 [ 10.031973][ T176] hardirqs last disabled at (29496): [] console_emit_next_record+0x3d4/0x4c0 [ 10.031975][ T176] softirqs last enabled at (28408): [] handle_softirqs+0x67c/0x900 [ 10.031978][ T176] softirqs last disabled at (27145): [] __irq_exit_rcu+0x145/0x1c0 [ 10.031980][ T176] Preemption disabled at: [ 10.031981][ T176] [<0000000000000000>] 0x0 [ 10.031988][ T176] CPU: 0 UID: 0 PID: 176 Comm: ip Tainted: G W 7.2.0-virtme #1 PREEMPT(full) [ 10.031991][ T176] Tainted: [W]=WARN [ 10.031992][ T176] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011 [ 10.031994][ T176] Call Trace: [ 10.031996][ T176] [ 10.031997][ T176] dump_stack_lvl+0x6f/0xa0 [ 10.032004][ T176] __might_resched.cold+0x1fe/0x2c1 [ 10.032008][ T176] ? perf_trace_sched_switch+0x7c0/0x7c0 [ 10.032012][ T176] ? __kmalloc_noprof+0xdb/0x760 [ 10.032018][ T176] __kmalloc_noprof+0x443/0x760 [ 10.032020][ T176] ? alloc_buf.isra.0+0x4b/0x260 [ 10.032026][ T176] ? do_raw_spin_unlock+0x59/0x250 [ 10.032029][ T176] alloc_buf.isra.0+0x4b/0x260 [ 10.032032][ T176] put_chars+0x1e1/0x2f0 [ 10.032035][ T176] ? __send_to_port+0x420/0x420 [ 10.032036][ T176] ? rcu_lockdep_current_cpu_online+0x3f/0x1b0 [ 10.032042][ T176] ? validate_chain+0x38b/0xc20 [ 10.032047][ T176] hvc_console_print+0x292/0x780 [ 10.032053][ T176] ? hvc_write+0x3a0/0x3a0 [ 10.032056][ T176] ? rcu_is_watching+0x16/0xd0 [ 10.032058][ T176] ? lock_acquire+0x13c/0x160 [ 10.032062][ T176] console_emit_next_record+0x22f/0x4c0 [ 10.032066][ T176] ? devkmsg_read+0x4b0/0x4b0 [ 10.032068][ T176] ? console_flush_one_record+0x106/0x710 [ 10.032071][ T176] ? rcu_is_watching+0x16/0xd0 [ 10.032073][ T176] ? lock_acquire+0x13c/0x160 [ 10.032077][ T176] console_flush_one_record+0x46f/0x710 [ 10.032081][ T176] ? console_emit_next_record+0x4c0/0x4c0 [ 10.032083][ T176] ? __lock_acquire+0x518/0xc20 [ 10.032088][ T176] console_unlock+0xee/0x1f0 [ 10.032091][ T176] ? console_flush_one_record+0x710/0x710 [ 10.032092][ T176] ? rcu_is_watching+0x16/0xd0 [ 10.032095][ T176] ? lock_acquire+0x60/0x160 [ 10.032098][ T176] ? __down_trylock_console_sem+0x5e/0xa0 [ 10.032100][ T176] ? vprintk_emit+0x320/0x3e0 [ 10.032103][ T176] vprintk_emit+0x37c/0x3e0 [ 10.032107][ T176] ? wake_up_klogd_work_func+0x90/0x90 [ 10.032111][ T176] ? __lock_acquire+0x518/0xc20 [ 10.032114][ T176] _printk+0xc7/0x100 [ 10.032118][ T176] ? snapshot_read.cold+0x21/0x21 [ 10.032120][ T176] ? do_raw_spin_lock+0x131/0x280 [ 10.032123][ T176] ? __rwlock_init+0x150/0x150 [ 10.032127][ T176] ? do_raw_spin_lock+0x131/0x280 [ 10.032129][ T176] do_exit.cold+0x82/0x9c [ 10.032133][ T176] ? exit_notify+0x890/0x890 [ 10.032135][ T176] ? __lock_release.isra.0+0x69/0x1a0 [ 10.032137][ T176] ? rcu_is_watching+0x16/0xd0 [ 10.032141][ T176] do_group_exit+0xb8/0x370 [ 10.032144][ T176] __x64_sys_exit_group+0x3c/0x50 [ 10.032146][ T176] x64_sys_call+0x1567/0x1570 [ 10.032149][ T176] do_syscall_64+0xff/0x530 [ 10.032153][ T176] ? exc_page_fault+0xee/0x100 [ 10.032156][ T176] entry_SYSCALL_64_after_hwframe+0x4b/0x53 [ 10.032158][ T176] RIP: 0033:0x7f88471db1b8 [ 10.032160][ T176] Code: Unable to access opcode bytes at 0x7f88471db18e. [ 10.032162][ T176] RSP: 002b:00007ffdaea93d48 EFLAGS: 00000246 ORIG_RAX: 00000000000000e7 [ 10.032164][ T176] RAX: ffffffffffffffda RBX: 00007f884730bf88 RCX: 00007f88471db1b8 [ 10.032165][ T176] RDX: 00007f8846f25fc8 RSI: fffffffffffffeb8 RDI: 0000000000000000 [ 10.032166][ T176] RBP: 00007ffdaea93da0 R08: 0000000000000000 R09: 0000000000000050 [ 10.032167][ T176] R10: 00007ffdaea93b60 R11: 0000000000000246 R12: 0000000000000001 [ 10.032168][ T176] R13: 0000000000000000 R14: 00007f884730a680 R15: 00007f884730bfa0 [ 10.032175][ T176] [ 10.203536][ T179] PPP generic driver version 2.4.2 [ 10.226426][ T179] NET: Registered PF_PPPOX protocol family [ 18.384624][ T241] iperf3 (241) used greatest stack depth: 23296 bytes left [ 18.384644][ T241] BUG: sleeping function called from invalid context at ./include/linux/sched/mm.h:322 [ 18.384647][ T241] in_atomic(): 1, irqs_disabled(): 1, non_block: 0, pid: 241, name: iperf3 [ 18.384649][ T241] preempt_count: 2, expected: 0 [ 18.384650][ T241] RCU nest depth: 0, expected: 0 [ 18.384658][ T241] locks held by iperf3/241: 5, last CPU#2: [ 18.384660][ T241] #0: ffffffffb20127b8 (low_water_lock){+.+.}-{3:3}, at: do_exit+0x887/0xdc0 [ 18.384671][ T241] #1: ffffffffb2179cc0 (console_lock){+.+.}-{0:0}, at: vprintk_emit+0x320/0x3e0 [ 18.384677][ T241] #2: ffffffffb2179d38 (console_srcu){....}-{0:0}, at: console_flush_one_record+0x106/0x710 [ 18.384681][ T241] #3: ffffffffb2099660 (console_owner){....}-{0:0}, at: console_lock_spinning_enable+0x40/0x60 [ 18.384685][ T241] #4: ffffffffb2099560 (printk_legacy_map-wait-type-override){....}-{3:3}, at: console_emit_next_record+0x1df/0x4c0 [ 18.384689][ T241] irq event stamp: 1525190 [ 18.384690][ T241] hardirqs last enabled at (1525189): [] __down_trylock_console_sem+0x86/0xa0 [ 18.384692][ T241] hardirqs last disabled at (1525190): [] console_emit_next_record+0x3d4/0x4c0 [ 18.384694][ T241] softirqs last enabled at (1524786): [] fpu__clear_user_states+0x104/0x290 [ 18.384698][ T241] softirqs last disabled at (1524784): [] fpu__clear_user_states+0x6d/0x290 [ 18.384700][ T241] Preemption disabled at: [ 18.384701][ T241] [<0000000000000000>] 0x0 [ 18.384708][ T241] CPU: 2 UID: 0 PID: 241 Comm: iperf3 Tainted: G W 7.2.0-virtme #1 PREEMPT(full) [ 18.384711][ T241] Tainted: [W]=WARN [ 18.384712][ T241] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011 [ 18.384714][ T241] Call Trace: [ 18.384716][ T241] [ 18.384717][ T241] dump_stack_lvl+0x6f/0xa0 [ 18.384723][ T241] __might_resched.cold+0x1fe/0x2c1 [ 18.384728][ T241] ? perf_trace_sched_switch+0x7c0/0x7c0 [ 18.384732][ T241] ? __kmalloc_noprof+0xdb/0x760 [ 18.384737][ T241] __kmalloc_noprof+0x443/0x760 [ 18.384739][ T241] ? alloc_buf.isra.0+0x4b/0x260 [ 18.384745][ T241] ? do_raw_spin_unlock+0x59/0x250 [ 18.384748][ T241] alloc_buf.isra.0+0x4b/0x260 [ 18.384751][ T241] put_chars+0x1e1/0x2f0 [ 18.384753][ T241] ? prb_final_commit+0x50/0x50 [ 18.384755][ T241] ? __send_to_port+0x420/0x420 [ 18.384758][ T241] ? rcu_lockdep_current_cpu_online+0x3f/0x1b0 [ 18.384763][ T241] ? rcu_read_lock_any_held+0x3c/0x90 [ 18.384765][ T241] ? validate_chain+0x38b/0xc20 [ 18.384769][ T241] hvc_console_print+0x292/0x780 [ 18.384772][ T241] ? mark_usage+0x61/0x170 [ 18.384774][ T241] ? __lock_acquire+0x518/0xc20 [ 18.384776][ T241] ? __lock_acquire+0x518/0xc20 [ 18.384779][ T241] ? hvc_write+0x3a0/0x3a0 [ 18.384781][ T241] ? console_emit_next_record+0x1df/0x4c0 [ 18.384785][ T241] ? rcu_is_watching+0x16/0xd0 [ 18.384787][ T241] ? lock_acquire+0x13c/0x160 [ 18.384791][ T241] console_emit_next_record+0x22f/0x4c0 [ 18.384795][ T241] ? devkmsg_read+0x4b0/0x4b0 [ 18.384797][ T241] ? console_flush_one_record+0x106/0x710 [ 18.384800][ T241] ? rcu_is_watching+0x16/0xd0 [ 18.384802][ T241] ? lock_acquire+0x13c/0x160 [ 18.384806][ T241] console_flush_one_record+0x46f/0x710 [ 18.384810][ T241] ? console_emit_next_record+0x4c0/0x4c0 [ 18.384811][ T241] ? __lock_acquire+0x518/0xc20 [ 18.384817][ T241] console_unlock+0xee/0x1f0 [ 18.384819][ T241] ? console_flush_one_record+0x710/0x710 [ 18.384824][ T241] ? rcu_is_watching+0x16/0xd0 [ 18.384827][ T241] ? lock_acquire+0x60/0x160 [ 18.384830][ T241] ? __down_trylock_console_sem+0x5e/0xa0 [ 18.384832][ T241] ? vprintk_emit+0x320/0x3e0 [ 18.384835][ T241] vprintk_emit+0x37c/0x3e0 [ 18.384839][ T241] ? wake_up_klogd_work_func+0x90/0x90 [ 18.384842][ T241] ? __lock_acquire+0x518/0xc20 [ 18.384846][ T241] _printk+0xc7/0x100 [ 18.384850][ T241] ? snapshot_read.cold+0x21/0x21 [ 18.384852][ T241] ? do_raw_spin_lock+0x131/0x280 [ 18.384855][ T241] ? __rwlock_init+0x150/0x150 [ 18.384858][ T241] ? do_raw_spin_lock+0x131/0x280 [ 18.384861][ T241] do_exit.cold+0x82/0x9c [ 18.384865][ T241] ? exit_notify+0x890/0x890 [ 18.384870][ T241] __x64_sys_exit+0x42/0x50 [ 18.384872][ T241] x64_sys_call+0x156c/0x1570 [ 18.384874][ T241] do_syscall_64+0xff/0x530 [ 18.384878][ T241] ? exc_page_fault+0xee/0x100 [ 18.384881][ T241] entry_SYSCALL_64_after_hwframe+0x4b/0x53 [ 18.384883][ T241] RIP: 0033:0x7f85f6c15c49 [ 18.384885][ T241] Code: Unable to access opcode bytes at 0x7f85f6c15c1f. [ 18.384886][ T241] RSP: 002b:00007f85f63d4e60 EFLAGS: 00000246 ORIG_RAX: 000000000000003c [ 18.384889][ T241] RAX: ffffffffffffffda RBX: 00007f85f63d56c0 RCX: 00007f85f6c15c49 [ 18.384890][ T241] RDX: 0000000000000000 RSI: 0000000000801000 RDI: 0000000000000000 [ 18.384891][ T241] RBP: 00007f85f63d4f70 R08: 0000000000000001 R09: 00007f85f63d56c0 [ 18.384892][ T241] R10: 0000000000000008 R11: 0000000000000246 R12: 00007f85f5bd5000 [ 18.384893][ T241] R13: 00007fff5a5cdda0 R14: 0000000000000002 R15: 00007fff5a5cdea7 [ 18.384900][ T241]