[ 9.195296][ T167] packetdrill (167) used greatest stack depth: 24480 bytes left [ 9.195310][ T167] BUG: sleeping function called from invalid context at ./include/linux/sched/mm.h:322 [ 9.195312][ T167] in_atomic(): 1, irqs_disabled(): 1, non_block: 0, pid: 167, name: packetdrill [ 9.195314][ T167] preempt_count: 2, expected: 0 [ 9.195315][ T167] RCU nest depth: 0, expected: 0 [ 9.195316][ T167] locks held by packetdrill/167: 5, last CPU#0: [ 9.195317][ T167] #0: ffffffffbb8027b8 (low_water_lock){+.+.}-{3:3}, at: do_exit+0x887/0xdc0 [ 9.195329][ T167] #1: ffffffffbb969cc0 (console_lock){+.+.}-{0:0}, at: vprintk_emit+0x320/0x3e0 [ 9.195334][ T167] #2: ffffffffbb969d38 (console_srcu){....}-{0:0}, at: console_flush_one_record+0x106/0x710 [ 9.195337][ T167] #3: ffffffffbb889660 (console_owner){....}-{0:0}, at: console_lock_spinning_enable+0x40/0x60 [ 9.195340][ T167] #4: ffffffffbb889560 (printk_legacy_map-wait-type-override){....}-{3:3}, at: console_emit_next_record+0x1df/0x4c0 [ 9.195347][ T167] irq event stamp: 4379446 [ 9.195348][ T167] hardirqs last enabled at (4379445): [] __down_trylock_console_sem+0x86/0xa0 [ 9.195351][ T167] hardirqs last disabled at (4379446): [] console_emit_next_record+0x3d4/0x4c0 [ 9.195353][ T167] softirqs last enabled at (4379216): [] tcp_close+0x2b/0xb0 [ 9.195357][ T167] softirqs last disabled at (4379214): [] release_sock+0x21/0x240 [ 9.195361][ T167] Preemption disabled at: [ 9.195362][ T167] [<0000000000000000>] 0x0 [ 9.195372][ T167] CPU: 0 UID: 0 PID: 167 Comm: packetdrill Tainted: G W 7.2.0-virtme #1 PREEMPT(full) [ 9.195375][ T167] Tainted: [W]=WARN [ 9.195376][ T167] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011 [ 9.195377][ T167] Call Trace: [ 9.195379][ T167] [ 9.195381][ T167] dump_stack_lvl+0x6f/0xa0 [ 9.195386][ T167] __might_resched.cold+0x1fe/0x2c1 [ 9.195390][ T167] ? perf_trace_sched_switch+0x7c0/0x7c0 [ 9.195393][ T167] ? __kmalloc_noprof+0xdb/0x760 [ 9.195399][ T167] __kmalloc_noprof+0x443/0x760 [ 9.195401][ T167] ? alloc_buf.isra.0+0x4b/0x260 [ 9.195407][ T167] ? do_raw_spin_unlock+0x59/0x250 [ 9.195410][ T167] alloc_buf.isra.0+0x4b/0x260 [ 9.195413][ T167] put_chars+0x1e1/0x2f0 [ 9.195416][ T167] ? __send_to_port+0x420/0x420 [ 9.195418][ T167] ? rcu_lockdep_current_cpu_online+0x3f/0x1b0 [ 9.195422][ T167] ? validate_chain+0x38b/0xc20 [ 9.195427][ T167] hvc_console_print+0x292/0x780 [ 9.195434][ T167] ? hvc_write+0x3a0/0x3a0 [ 9.195436][ T167] ? rcu_is_watching+0x16/0xd0 [ 9.195438][ T167] ? lock_acquire+0x13c/0x160 [ 9.195442][ T167] console_emit_next_record+0x22f/0x4c0 [ 9.195445][ T167] ? devkmsg_read+0x4b0/0x4b0 [ 9.195447][ T167] ? console_flush_one_record+0x106/0x710 [ 9.195449][ T167] ? rcu_is_watching+0x16/0xd0 [ 9.195451][ T167] ? lock_acquire+0x13c/0x160 [ 9.195455][ T167] console_flush_one_record+0x46f/0x710 [ 9.195458][ T167] ? console_emit_next_record+0x4c0/0x4c0 [ 9.195459][ T167] ? __lock_acquire+0x518/0xc20 [ 9.195465][ T167] console_unlock+0xee/0x1f0 [ 9.195467][ T167] ? console_flush_one_record+0x710/0x710 [ 9.195468][ T167] ? rcu_is_watching+0x16/0xd0 [ 9.195470][ T167] ? lock_acquire+0x60/0x160 [ 9.195473][ T167] ? __down_trylock_console_sem+0x5e/0xa0 [ 9.195475][ T167] ? vprintk_emit+0x320/0x3e0 [ 9.195478][ T167] vprintk_emit+0x37c/0x3e0 [ 9.195481][ T167] ? wake_up_klogd_work_func+0x90/0x90 [ 9.195484][ T167] ? __lock_acquire+0x518/0xc20 [ 9.195487][ T167] _printk+0xc7/0x100 [ 9.195491][ T167] ? snapshot_read.cold+0x21/0x21 [ 9.195494][ T167] ? do_raw_spin_lock+0x131/0x280 [ 9.195496][ T167] ? __rwlock_init+0x150/0x150 [ 9.195500][ T167] ? do_raw_spin_lock+0x131/0x280 [ 9.195503][ T167] do_exit.cold+0x82/0x9c [ 9.195506][ T167] ? exit_notify+0x890/0x890 [ 9.195508][ T167] ? __lock_release.isra.0+0x69/0x1a0 [ 9.195510][ T167] ? rcu_is_watching+0x16/0xd0 [ 9.195514][ T167] do_group_exit+0xb8/0x370 [ 9.195517][ T167] __x64_sys_exit_group+0x3c/0x50 [ 9.195519][ T167] x64_sys_call+0x1567/0x1570 [ 9.195522][ T167] do_syscall_64+0xff/0x530 [ 9.195525][ T167] ? irq_exit_rcu+0x1a/0x30 [ 9.195528][ T167] entry_SYSCALL_64_after_hwframe+0x4b/0x53 [ 9.195530][ T167] RIP: 0033:0x479678 [ 9.195532][ T167] Code: Unable to access opcode bytes at 0x47964e. [ 9.195533][ T167] RSP: 002b:00007ffda46a7438 EFLAGS: 00000246 ORIG_RAX: 00000000000000e7 [ 9.195535][ T167] RAX: ffffffffffffffda RBX: 0000000000000001 RCX: 0000000000479678 [ 9.195537][ T167] RDX: 000000002983d708 RSI: fffffffffffffff0 RDI: 0000000000000000 [ 9.195538][ T167] RBP: 00007ffda46a7490 R08: 0000000000000000 R09: 000000002983e3e0 [ 9.195539][ T167] R10: 0000000000000110 R11: 0000000000000246 R12: 00007ffda46a75c8 [ 9.195540][ T167] R13: 00007ffda46a7650 R14: 0000000000000000 R15: 000000000054d560 [ 9.195546][ T167]