[ 10.620559][ T167] packetdrill (167) used greatest stack depth: 24504 bytes left [ 10.620578][ T167] BUG: sleeping function called from invalid context at ./include/linux/sched/mm.h:322 [ 10.620581][ T167] in_atomic(): 1, irqs_disabled(): 1, non_block: 0, pid: 167, name: packetdrill [ 10.620583][ T167] preempt_count: 2, expected: 0 [ 10.620585][ T167] RCU nest depth: 0, expected: 0 [ 10.620586][ T167] locks held by packetdrill/167: 5, last CPU#3: [ 10.620589][ T167] #0: ffffffffa70027b8 (low_water_lock){+.+.}-{3:3}, at: do_exit+0x887/0xdc0 [ 10.620605][ T167] #1: ffffffffa7169cc0 (console_lock){+.+.}-{0:0}, at: vprintk_emit+0x320/0x3e0 [ 10.620612][ T167] #2: ffffffffa7169d38 (console_srcu){....}-{0:0}, at: console_flush_one_record+0x106/0x710 [ 10.620617][ T167] #3: ffffffffa7089660 (console_owner){....}-{0:0}, at: console_lock_spinning_enable+0x40/0x60 [ 10.620622][ T167] #4: ffffffffa7089560 (printk_legacy_map-wait-type-override){....}-{3:3}, at: console_emit_next_record+0x1df/0x4c0 [ 10.620627][ T167] irq event stamp: 4052870 [ 10.620628][ T167] hardirqs last enabled at (4052869): [] __down_trylock_console_sem+0x86/0xa0 [ 10.620633][ T167] hardirqs last disabled at (4052870): [] console_emit_next_record+0x3d4/0x4c0 [ 10.620635][ T167] softirqs last enabled at (4052624): [] tcp_close+0x2b/0xb0 [ 10.620640][ T167] softirqs last disabled at (4052622): [] release_sock+0x21/0x240 [ 10.620645][ T167] Preemption disabled at: [ 10.620646][ T167] [<0000000000000000>] 0x0 [ 10.620655][ T167] CPU: 3 UID: 0 PID: 167 Comm: packetdrill Tainted: G W 7.2.0-virtme #1 PREEMPT(full) [ 10.620660][ T167] Tainted: [W]=WARN [ 10.620661][ T167] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011 [ 10.620663][ T167] Call Trace: [ 10.620665][ T167] [ 10.620668][ T167] dump_stack_lvl+0x6f/0xa0 [ 10.620675][ T167] __might_resched.cold+0x1fe/0x2c1 [ 10.620681][ T167] ? perf_trace_sched_switch+0x7c0/0x7c0 [ 10.620686][ T167] ? __kmalloc_noprof+0xdb/0x760 [ 10.620693][ T167] __kmalloc_noprof+0x443/0x760 [ 10.620697][ T167] ? alloc_buf.isra.0+0x4b/0x260 [ 10.620706][ T167] ? do_raw_spin_unlock+0x59/0x250 [ 10.620710][ T167] alloc_buf.isra.0+0x4b/0x260 [ 10.620715][ T167] put_chars+0x1e1/0x2f0 [ 10.620720][ T167] ? __send_to_port+0x420/0x420 [ 10.620722][ T167] ? rcu_lockdep_current_cpu_online+0x3f/0x1b0 [ 10.620728][ T167] ? validate_chain+0x38b/0xc20 [ 10.620738][ T167] hvc_console_print+0x292/0x780 [ 10.620748][ T167] ? hvc_write+0x3a0/0x3a0 [ 10.620752][ T167] ? rcu_is_watching+0x16/0xd0 [ 10.620756][ T167] ? lock_acquire+0x13c/0x160 [ 10.620763][ T167] console_emit_next_record+0x22f/0x4c0 [ 10.620769][ T167] ? devkmsg_read+0x4b0/0x4b0 [ 10.620771][ T167] ? console_flush_one_record+0x106/0x710 [ 10.620775][ T167] ? rcu_is_watching+0x16/0xd0 [ 10.620778][ T167] ? lock_acquire+0x13c/0x160 [ 10.620785][ T167] console_flush_one_record+0x46f/0x710 [ 10.620791][ T167] ? console_emit_next_record+0x4c0/0x4c0 [ 10.620793][ T167] ? __lock_acquire+0x518/0xc20 [ 10.620802][ T167] console_unlock+0xee/0x1f0 [ 10.620806][ T167] ? console_flush_one_record+0x710/0x710 [ 10.620808][ T167] ? rcu_is_watching+0x16/0xd0 [ 10.620811][ T167] ? lock_acquire+0x60/0x160 [ 10.620817][ T167] ? __down_trylock_console_sem+0x5e/0xa0 [ 10.620820][ T167] ? vprintk_emit+0x320/0x3e0 [ 10.620824][ T167] vprintk_emit+0x37c/0x3e0 [ 10.620829][ T167] ? wake_up_klogd_work_func+0x90/0x90 [ 10.620832][ T167] ? do_raw_spin_unlock+0x59/0x250 [ 10.620836][ T167] ? __lock_acquire+0x518/0xc20 [ 10.620843][ T167] _printk+0xc7/0x100 [ 10.620848][ T167] ? snapshot_read.cold+0x21/0x21 [ 10.620852][ T167] ? do_raw_spin_lock+0x131/0x280 [ 10.620857][ T167] ? __rwlock_init+0x150/0x150 [ 10.620863][ T167] ? do_raw_spin_lock+0x131/0x280 [ 10.620868][ T167] do_exit.cold+0x82/0x9c [ 10.620873][ T167] ? exit_notify+0x890/0x890 [ 10.620875][ T167] ? __lock_release.isra.0+0x69/0x1a0 [ 10.620880][ T167] ? rcu_is_watching+0x16/0xd0 [ 10.620886][ T167] do_group_exit+0xb8/0x370 [ 10.620891][ T167] __x64_sys_exit_group+0x3c/0x50 [ 10.620894][ T167] x64_sys_call+0x1567/0x1570 [ 10.620898][ T167] do_syscall_64+0xff/0x530 [ 10.620902][ T167] ? irq_exit_rcu+0x1a/0x30 [ 10.620907][ T167] entry_SYSCALL_64_after_hwframe+0x4b/0x53 [ 10.620910][ T167] RIP: 0033:0x479678 [ 10.620914][ T167] Code: Unable to access opcode bytes at 0x47964e. [ 10.620915][ T167] RSP: 002b:00007fffa60b1aa8 EFLAGS: 00000246 ORIG_RAX: 00000000000000e7 [ 10.620918][ T167] RAX: ffffffffffffffda RBX: 0000000000000001 RCX: 0000000000479678 [ 10.620920][ T167] RDX: 0000000040278708 RSI: fffffffffffffff0 RDI: 0000000000000000 [ 10.620922][ T167] RBP: 00007fffa60b1b00 R08: 0000000000000000 R09: 00000000402793e0 [ 10.620923][ T167] R10: 0000000000000110 R11: 0000000000000246 R12: 00007fffa60b1c38 [ 10.620925][ T167] R13: 00007fffa60b1cc0 R14: 0000000000000000 R15: 000000000054d560 [ 10.620937][ T167]