[ 12.085889][ T168] packetdrill (168) used greatest stack depth: 24464 bytes left [ 12.085905][ T168] BUG: sleeping function called from invalid context at ./include/linux/sched/mm.h:322 [ 12.085906][ T168] in_atomic(): 1, irqs_disabled(): 1, non_block: 0, pid: 168, name: packetdrill [ 12.085908][ T168] preempt_count: 2, expected: 0 [ 12.085909][ T168] RCU nest depth: 0, expected: 0 [ 12.085910][ T168] locks held by packetdrill/168: 5, last CPU#0: [ 12.085912][ T168] #0: ffffffff978027b8 (low_water_lock){+.+.}-{3:3}, at: do_exit+0x887/0xdc0 [ 12.085924][ T168] #1: ffffffff97969cc0 (console_lock){+.+.}-{0:0}, at: vprintk_emit+0x320/0x3e0 [ 12.085929][ T168] #2: ffffffff97969d38 (console_srcu){....}-{0:0}, at: console_flush_one_record+0x106/0x710 [ 12.085933][ T168] #3: ffffffff97889660 (console_owner){....}-{0:0}, at: console_lock_spinning_enable+0x40/0x60 [ 12.085936][ T168] #4: ffffffff97889560 (printk_legacy_map-wait-type-override){....}-{3:3}, at: console_emit_next_record+0x1df/0x4c0 [ 12.085939][ T168] irq event stamp: 4078752 [ 12.085940][ T168] hardirqs last enabled at (4078751): [] __down_trylock_console_sem+0x86/0xa0 [ 12.085943][ T168] hardirqs last disabled at (4078752): [] console_emit_next_record+0x3d4/0x4c0 [ 12.085945][ T168] softirqs last enabled at (4078522): [] tcp_close+0x2b/0xb0 [ 12.085949][ T168] softirqs last disabled at (4078520): [] release_sock+0x21/0x240 [ 12.085953][ T168] Preemption disabled at: [ 12.085953][ T168] [<0000000000000000>] 0x0 [ 12.085960][ T168] CPU: 0 UID: 0 PID: 168 Comm: packetdrill Tainted: G W 7.2.0-virtme #1 PREEMPT(full) [ 12.085963][ T168] Tainted: [W]=WARN [ 12.085964][ T168] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011 [ 12.085966][ T168] Call Trace: [ 12.085968][ T168] [ 12.085969][ T168] dump_stack_lvl+0x6f/0xa0 [ 12.085974][ T168] __might_resched.cold+0x1fe/0x2c1 [ 12.085978][ T168] ? perf_trace_sched_switch+0x7c0/0x7c0 [ 12.085982][ T168] ? __kmalloc_noprof+0xdb/0x760 [ 12.085987][ T168] __kmalloc_noprof+0x443/0x760 [ 12.085989][ T168] ? alloc_buf.isra.0+0x4b/0x260 [ 12.085995][ T168] ? do_raw_spin_unlock+0x59/0x250 [ 12.085998][ T168] alloc_buf.isra.0+0x4b/0x260 [ 12.086002][ T168] put_chars+0x1e1/0x2f0 [ 12.086005][ T168] ? __send_to_port+0x420/0x420 [ 12.086006][ T168] ? rcu_lockdep_current_cpu_online+0x3f/0x1b0 [ 12.086010][ T168] ? validate_chain+0x38b/0xc20 [ 12.086015][ T168] hvc_console_print+0x292/0x780 [ 12.086022][ T168] ? hvc_write+0x3a0/0x3a0 [ 12.086024][ T168] ? rcu_is_watching+0x16/0xd0 [ 12.086026][ T168] ? lock_acquire+0x13c/0x160 [ 12.086031][ T168] console_emit_next_record+0x22f/0x4c0 [ 12.086034][ T168] ? devkmsg_read+0x4b0/0x4b0 [ 12.086035][ T168] ? console_flush_one_record+0x106/0x710 [ 12.086038][ T168] ? rcu_is_watching+0x16/0xd0 [ 12.086040][ T168] ? lock_acquire+0x13c/0x160 [ 12.086044][ T168] console_flush_one_record+0x46f/0x710 [ 12.086047][ T168] ? console_emit_next_record+0x4c0/0x4c0 [ 12.086048][ T168] ? __lock_acquire+0x518/0xc20 [ 12.086054][ T168] console_unlock+0xee/0x1f0 [ 12.086056][ T168] ? console_flush_one_record+0x710/0x710 [ 12.086057][ T168] ? rcu_is_watching+0x16/0xd0 [ 12.086059][ T168] ? lock_acquire+0x60/0x160 [ 12.086063][ T168] ? __down_trylock_console_sem+0x5e/0xa0 [ 12.086065][ T168] ? vprintk_emit+0x320/0x3e0 [ 12.086067][ T168] vprintk_emit+0x37c/0x3e0 [ 12.086071][ T168] ? wake_up_klogd_work_func+0x90/0x90 [ 12.086077][ T168] ? __lock_acquire+0x518/0xc20 [ 12.086081][ T168] _printk+0xc7/0x100 [ 12.086085][ T168] ? snapshot_read.cold+0x21/0x21 [ 12.086087][ T168] ? do_raw_spin_lock+0x131/0x280 [ 12.086090][ T168] ? __rwlock_init+0x150/0x150 [ 12.086094][ T168] ? do_raw_spin_lock+0x131/0x280 [ 12.086097][ T168] do_exit.cold+0x82/0x9c [ 12.086100][ T168] ? exit_notify+0x890/0x890 [ 12.086102][ T168] ? __lock_release.isra.0+0x69/0x1a0 [ 12.086104][ T168] ? rcu_is_watching+0x16/0xd0 [ 12.086108][ T168] do_group_exit+0xb8/0x370 [ 12.086111][ T168] __x64_sys_exit_group+0x3c/0x50 [ 12.086113][ T168] x64_sys_call+0x1567/0x1570 [ 12.086115][ T168] do_syscall_64+0xff/0x530 [ 12.086119][ T168] ? irq_exit_rcu+0x1a/0x30 [ 12.086122][ T168] entry_SYSCALL_64_after_hwframe+0x4b/0x53 [ 12.086124][ T168] RIP: 0033:0x479678 [ 12.086126][ T168] Code: Unable to access opcode bytes at 0x47964e. [ 12.086127][ T168] RSP: 002b:00007ffd71bec3d8 EFLAGS: 00000246 ORIG_RAX: 00000000000000e7 [ 12.086135][ T168] RAX: ffffffffffffffda RBX: 0000000000000001 RCX: 0000000000479678 [ 12.086136][ T168] RDX: 000000000b1f1708 RSI: fffffffffffffff0 RDI: 0000000000000000 [ 12.086137][ T168] RBP: 00007ffd71bec430 R08: 0000000000000000 R09: 000000000b1f23e0 [ 12.086138][ T168] R10: 0000000000000110 R11: 0000000000000246 R12: 00007ffd71bec568 [ 12.086139][ T168] R13: 00007ffd71bec5f0 R14: 0000000000000000 R15: 000000000054d560 [ 12.086145][ T168]