[ 12.162062][ T204] packetdrill (204) used greatest stack depth: 23584 bytes left [ 12.162079][ T204] BUG: sleeping function called from invalid context at ./include/linux/sched/mm.h:322 [ 12.162081][ T204] in_atomic(): 1, irqs_disabled(): 1, non_block: 0, pid: 204, name: packetdrill [ 12.162083][ T204] preempt_count: 2, expected: 0 [ 12.162084][ T204] RCU nest depth: 0, expected: 0 [ 12.162085][ T204] locks held by packetdrill/204: 5, last CPU#3: [ 12.162087][ T204] #0: ffffffffbb2027b8 (low_water_lock){+.+.}-{3:3}, at: do_exit+0x887/0xdc0 [ 12.162101][ T204] #1: ffffffffbb369cc0 (console_lock){+.+.}-{0:0}, at: vprintk_emit+0x320/0x3e0 [ 12.162106][ T204] #2: ffffffffbb369d38 (console_srcu){....}-{0:0}, at: console_flush_one_record+0x106/0x710 [ 12.162109][ T204] #3: ffffffffbb289660 (console_owner){....}-{0:0}, at: console_lock_spinning_enable+0x40/0x60 [ 12.162112][ T204] #4: ffffffffbb289560 (printk_legacy_map-wait-type-override){....}-{3:3}, at: console_emit_next_record+0x1df/0x4c0 [ 12.162116][ T204] irq event stamp: 4066082 [ 12.162117][ T204] hardirqs last enabled at (4066081): [] __down_trylock_console_sem+0x86/0xa0 [ 12.162120][ T204] hardirqs last disabled at (4066082): [] console_emit_next_record+0x3d4/0x4c0 [ 12.162122][ T204] softirqs last enabled at (4065666): [] handle_softirqs+0x67c/0x900 [ 12.162124][ T204] softirqs last disabled at (4064887): [] __irq_exit_rcu+0x145/0x1c0 [ 12.162126][ T204] Preemption disabled at: [ 12.162127][ T204] [<0000000000000000>] 0x0 [ 12.162134][ T204] CPU: 3 UID: 0 PID: 204 Comm: packetdrill Tainted: G W 7.2.0-virtme #1 PREEMPT(full) [ 12.162137][ T204] Tainted: [W]=WARN [ 12.162138][ T204] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011 [ 12.162140][ T204] Call Trace: [ 12.162142][ T204] [ 12.162143][ T204] dump_stack_lvl+0x6f/0xa0 [ 12.162148][ T204] __might_resched.cold+0x1fe/0x2c1 [ 12.162153][ T204] ? perf_trace_sched_switch+0x7c0/0x7c0 [ 12.162156][ T204] ? __kmalloc_noprof+0xdb/0x760 [ 12.162161][ T204] __kmalloc_noprof+0x443/0x760 [ 12.162164][ T204] ? alloc_buf.isra.0+0x4b/0x260 [ 12.162170][ T204] ? do_raw_spin_unlock+0x59/0x250 [ 12.162173][ T204] alloc_buf.isra.0+0x4b/0x260 [ 12.162176][ T204] put_chars+0x1e1/0x2f0 [ 12.162179][ T204] ? __send_to_port+0x420/0x420 [ 12.162180][ T204] ? rcu_lockdep_current_cpu_online+0x3f/0x1b0 [ 12.162184][ T204] ? validate_chain+0x38b/0xc20 [ 12.162190][ T204] hvc_console_print+0x292/0x780 [ 12.162196][ T204] ? hvc_write+0x3a0/0x3a0 [ 12.162198][ T204] ? rcu_is_watching+0x16/0xd0 [ 12.162200][ T204] ? lock_acquire+0x13c/0x160 [ 12.162204][ T204] console_emit_next_record+0x22f/0x4c0 [ 12.162208][ T204] ? devkmsg_read+0x4b0/0x4b0 [ 12.162209][ T204] ? console_flush_one_record+0x106/0x710 [ 12.162211][ T204] ? rcu_is_watching+0x16/0xd0 [ 12.162213][ T204] ? lock_acquire+0x13c/0x160 [ 12.162217][ T204] console_flush_one_record+0x46f/0x710 [ 12.162221][ T204] ? console_emit_next_record+0x4c0/0x4c0 [ 12.162222][ T204] ? __lock_acquire+0x518/0xc20 [ 12.162227][ T204] console_unlock+0xee/0x1f0 [ 12.162229][ T204] ? console_flush_one_record+0x710/0x710 [ 12.162231][ T204] ? rcu_is_watching+0x16/0xd0 [ 12.162232][ T204] ? lock_acquire+0x60/0x160 [ 12.162236][ T204] ? __down_trylock_console_sem+0x5e/0xa0 [ 12.162238][ T204] ? vprintk_emit+0x320/0x3e0 [ 12.162241][ T204] vprintk_emit+0x37c/0x3e0 [ 12.162244][ T204] ? wake_up_klogd_work_func+0x90/0x90 [ 12.162247][ T204] ? __lock_acquire+0x518/0xc20 [ 12.162250][ T204] _printk+0xc7/0x100 [ 12.162254][ T204] ? snapshot_read.cold+0x21/0x21 [ 12.162257][ T204] ? do_raw_spin_lock+0x131/0x280 [ 12.162260][ T204] ? __rwlock_init+0x150/0x150 [ 12.162264][ T204] ? do_raw_spin_lock+0x131/0x280 [ 12.162266][ T204] do_exit.cold+0x82/0x9c [ 12.162270][ T204] ? exit_notify+0x890/0x890 [ 12.162271][ T204] ? __lock_release.isra.0+0x69/0x1a0 [ 12.162274][ T204] ? rcu_is_watching+0x16/0xd0 [ 12.162278][ T204] do_group_exit+0xb8/0x370 [ 12.162280][ T204] __x64_sys_exit_group+0x3c/0x50 [ 12.162282][ T204] x64_sys_call+0x1567/0x1570 [ 12.162285][ T204] do_syscall_64+0xff/0x530 [ 12.162289][ T204] ? irq_exit_rcu+0x1a/0x30 [ 12.162292][ T204] entry_SYSCALL_64_after_hwframe+0x4b/0x53 [ 12.162294][ T204] RIP: 0033:0x479678 [ 12.162296][ T204] Code: Unable to access opcode bytes at 0x47964e. [ 12.162297][ T204] RSP: 002b:00007ffcc5d7f2e8 EFLAGS: 00000246 ORIG_RAX: 00000000000000e7 [ 12.162300][ T204] RAX: ffffffffffffffda RBX: 0000000000000001 RCX: 0000000000479678 [ 12.162301][ T204] RDX: 000000000ff60708 RSI: fffffffffffffff0 RDI: 0000000000000000 [ 12.162302][ T204] RBP: 00007ffcc5d7f340 R08: 0000000000000000 R09: 000000000ff613e0 [ 12.162303][ T204] R10: 0000000000000110 R11: 0000000000000246 R12: 00007ffcc5d7f478 [ 12.162304][ T204] R13: 00007ffcc5d7f500 R14: 0000000000000000 R15: 000000000054d560 [ 12.162310][ T204]