[ 9.706254][ T168] packetdrill (168) used greatest stack depth: 24496 bytes left [ 9.706269][ T168] BUG: sleeping function called from invalid context at ./include/linux/sched/mm.h:322 [ 9.706271][ T168] in_atomic(): 1, irqs_disabled(): 1, non_block: 0, pid: 168, name: packetdrill [ 9.706273][ T168] preempt_count: 2, expected: 0 [ 9.706274][ T168] RCU nest depth: 0, expected: 0 [ 9.706275][ T168] locks held by packetdrill/168: 5, last CPU#3: [ 9.706277][ T168] #0: ffffffff992027b8 (low_water_lock){+.+.}-{3:3}, at: do_exit+0x887/0xdc0 [ 9.706289][ T168] #1: ffffffff99369cc0 (console_lock){+.+.}-{0:0}, at: vprintk_emit+0x320/0x3e0 [ 9.706294][ T168] #2: ffffffff99369d38 (console_srcu){....}-{0:0}, at: console_flush_one_record+0x106/0x710 [ 9.706297][ T168] #3: ffffffff99289660 (console_owner){....}-{0:0}, at: console_lock_spinning_enable+0x40/0x60 [ 9.706300][ T168] #4: ffffffff99289560 (printk_legacy_map-wait-type-override){....}-{3:3}, at: console_emit_next_record+0x1df/0x4c0 [ 9.706304][ T168] irq event stamp: 4048462 [ 9.706305][ T168] hardirqs last enabled at (4048461): [] __down_trylock_console_sem+0x86/0xa0 [ 9.706308][ T168] hardirqs last disabled at (4048462): [] console_emit_next_record+0x3d4/0x4c0 [ 9.706309][ T168] softirqs last enabled at (4048034): [] handle_softirqs+0x67c/0x900 [ 9.706312][ T168] softirqs last disabled at (4047469): [] __irq_exit_rcu+0x145/0x1c0 [ 9.706317][ T168] Preemption disabled at: [ 9.706317][ T168] [<0000000000000000>] 0x0 [ 9.706325][ T168] CPU: 3 UID: 0 PID: 168 Comm: packetdrill Tainted: G W 7.2.0-virtme #1 PREEMPT(full) [ 9.706328][ T168] Tainted: [W]=WARN [ 9.706329][ T168] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011 [ 9.706331][ T168] Call Trace: [ 9.706333][ T168] [ 9.706334][ T168] dump_stack_lvl+0x6f/0xa0 [ 9.706340][ T168] __might_resched.cold+0x1fe/0x2c1 [ 9.706344][ T168] ? perf_trace_sched_switch+0x7c0/0x7c0 [ 9.706347][ T168] ? __kmalloc_noprof+0xdb/0x760 [ 9.706352][ T168] __kmalloc_noprof+0x443/0x760 [ 9.706355][ T168] ? alloc_buf.isra.0+0x4b/0x260 [ 9.706361][ T168] ? do_raw_spin_unlock+0x59/0x250 [ 9.706364][ T168] alloc_buf.isra.0+0x4b/0x260 [ 9.706367][ T168] put_chars+0x1e1/0x2f0 [ 9.706370][ T168] ? __send_to_port+0x420/0x420 [ 9.706372][ T168] ? rcu_lockdep_current_cpu_online+0x3f/0x1b0 [ 9.706376][ T168] ? validate_chain+0x38b/0xc20 [ 9.706381][ T168] hvc_console_print+0x292/0x780 [ 9.706388][ T168] ? hvc_write+0x3a0/0x3a0 [ 9.706390][ T168] ? rcu_is_watching+0x16/0xd0 [ 9.706392][ T168] ? lock_acquire+0x13c/0x160 [ 9.706396][ T168] console_emit_next_record+0x22f/0x4c0 [ 9.706399][ T168] ? devkmsg_read+0x4b0/0x4b0 [ 9.706400][ T168] ? console_flush_one_record+0x106/0x710 [ 9.706403][ T168] ? rcu_is_watching+0x16/0xd0 [ 9.706405][ T168] ? lock_acquire+0x13c/0x160 [ 9.706409][ T168] console_flush_one_record+0x46f/0x710 [ 9.706412][ T168] ? console_emit_next_record+0x4c0/0x4c0 [ 9.706414][ T168] ? __lock_acquire+0x518/0xc20 [ 9.706419][ T168] console_unlock+0xee/0x1f0 [ 9.706421][ T168] ? console_flush_one_record+0x710/0x710 [ 9.706422][ T168] ? rcu_is_watching+0x16/0xd0 [ 9.706424][ T168] ? lock_acquire+0x60/0x160 [ 9.706428][ T168] ? __down_trylock_console_sem+0x5e/0xa0 [ 9.706430][ T168] ? vprintk_emit+0x320/0x3e0 [ 9.706432][ T168] vprintk_emit+0x37c/0x3e0 [ 9.706435][ T168] ? wake_up_klogd_work_func+0x90/0x90 [ 9.706437][ T168] ? do_raw_spin_unlock+0x59/0x250 [ 9.706440][ T168] ? __lock_acquire+0x518/0xc20 [ 9.706444][ T168] _printk+0xc7/0x100 [ 9.706447][ T168] ? snapshot_read.cold+0x21/0x21 [ 9.706450][ T168] ? do_raw_spin_lock+0x131/0x280 [ 9.706453][ T168] ? __rwlock_init+0x150/0x150 [ 9.706456][ T168] ? do_raw_spin_lock+0x131/0x280 [ 9.706459][ T168] do_exit.cold+0x82/0x9c [ 9.706462][ T168] ? exit_notify+0x890/0x890 [ 9.706464][ T168] ? __lock_release.isra.0+0x69/0x1a0 [ 9.706467][ T168] ? rcu_is_watching+0x16/0xd0 [ 9.706470][ T168] do_group_exit+0xb8/0x370 [ 9.706473][ T168] __x64_sys_exit_group+0x3c/0x50 [ 9.706475][ T168] x64_sys_call+0x1567/0x1570 [ 9.706478][ T168] do_syscall_64+0xff/0x530 [ 9.706482][ T168] ? irq_exit_rcu+0x1a/0x30 [ 9.706485][ T168] entry_SYSCALL_64_after_hwframe+0x4b/0x53 [ 9.706487][ T168] RIP: 0033:0x479678 [ 9.706489][ T168] Code: Unable to access opcode bytes at 0x47964e. [ 9.706490][ T168] RSP: 002b:00007fff8129d278 EFLAGS: 00000246 ORIG_RAX: 00000000000000e7 [ 9.706492][ T168] RAX: ffffffffffffffda RBX: 0000000000000001 RCX: 0000000000479678 [ 9.706494][ T168] RDX: 000000000d17a708 RSI: fffffffffffffff0 RDI: 0000000000000000 [ 9.706495][ T168] RBP: 00007fff8129d2d0 R08: 0000000000000000 R09: 000000000d17b3e0 [ 9.706496][ T168] R10: 0000000000000110 R11: 0000000000000246 R12: 00007fff8129d408 [ 9.706496][ T168] R13: 00007fff8129d490 R14: 0000000000000000 R15: 000000000054d560 [ 9.706503][ T168]