[ 9.130446][ T167] packetdrill (167) used greatest stack depth: 24848 bytes left [ 9.130462][ T167] BUG: sleeping function called from invalid context at ./include/linux/sched/mm.h:322 [ 9.130464][ T167] in_atomic(): 1, irqs_disabled(): 1, non_block: 0, pid: 167, name: packetdrill [ 9.130465][ T167] preempt_count: 2, expected: 0 [ 9.130466][ T167] RCU nest depth: 0, expected: 0 [ 9.130467][ T167] locks held by packetdrill/167: 5, last CPU#3: [ 9.130469][ T167] #0: ffffffff9a2027b8 (low_water_lock){+.+.}-{3:3}, at: do_exit+0x887/0xdc0 [ 9.130481][ T167] #1: ffffffff9a369cc0 (console_lock){+.+.}-{0:0}, at: vprintk_emit+0x320/0x3e0 [ 9.130486][ T167] #2: ffffffff9a369d38 (console_srcu){....}-{0:0}, at: console_flush_one_record+0x106/0x710 [ 9.130489][ T167] #3: ffffffff9a289660 (console_owner){....}-{0:0}, at: console_lock_spinning_enable+0x40/0x60 [ 9.130492][ T167] #4: ffffffff9a289560 (printk_legacy_map-wait-type-override){....}-{3:3}, at: console_emit_next_record+0x1df/0x4c0 [ 9.130495][ T167] irq event stamp: 4053972 [ 9.130496][ T167] hardirqs last enabled at (4053971): [] __down_trylock_console_sem+0x86/0xa0 [ 9.130500][ T167] hardirqs last disabled at (4053972): [] console_emit_next_record+0x3d4/0x4c0 [ 9.130501][ T167] softirqs last enabled at (4053728): [] tcp_close+0x2b/0xb0 [ 9.130505][ T167] softirqs last disabled at (4053726): [] release_sock+0x21/0x240 [ 9.130509][ T167] Preemption disabled at: [ 9.130509][ T167] [<0000000000000000>] 0x0 [ 9.130516][ T167] CPU: 3 UID: 0 PID: 167 Comm: packetdrill Tainted: G W 7.2.0-virtme #1 PREEMPT(full) [ 9.130520][ T167] Tainted: [W]=WARN [ 9.130521][ T167] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011 [ 9.130522][ T167] Call Trace: [ 9.130523][ T167] [ 9.130525][ T167] dump_stack_lvl+0x6f/0xa0 [ 9.130530][ T167] __might_resched.cold+0x1fe/0x2c1 [ 9.130535][ T167] ? perf_trace_sched_switch+0x7c0/0x7c0 [ 9.130538][ T167] ? __kmalloc_noprof+0xdb/0x760 [ 9.130543][ T167] __kmalloc_noprof+0x443/0x760 [ 9.130546][ T167] ? alloc_buf.isra.0+0x4b/0x260 [ 9.130552][ T167] ? do_raw_spin_unlock+0x59/0x250 [ 9.130554][ T167] alloc_buf.isra.0+0x4b/0x260 [ 9.130558][ T167] put_chars+0x1e1/0x2f0 [ 9.130561][ T167] ? __send_to_port+0x420/0x420 [ 9.130563][ T167] ? rcu_lockdep_current_cpu_online+0x3f/0x1b0 [ 9.130567][ T167] ? validate_chain+0x38b/0xc20 [ 9.130572][ T167] hvc_console_print+0x292/0x780 [ 9.130578][ T167] ? hvc_write+0x3a0/0x3a0 [ 9.130581][ T167] ? rcu_is_watching+0x16/0xd0 [ 9.130583][ T167] ? lock_acquire+0x13c/0x160 [ 9.130587][ T167] console_emit_next_record+0x22f/0x4c0 [ 9.130590][ T167] ? devkmsg_read+0x4b0/0x4b0 [ 9.130592][ T167] ? console_flush_one_record+0x106/0x710 [ 9.130594][ T167] ? rcu_is_watching+0x16/0xd0 [ 9.130596][ T167] ? lock_acquire+0x13c/0x160 [ 9.130600][ T167] console_flush_one_record+0x46f/0x710 [ 9.130604][ T167] ? console_emit_next_record+0x4c0/0x4c0 [ 9.130605][ T167] ? __lock_acquire+0x518/0xc20 [ 9.130610][ T167] console_unlock+0xee/0x1f0 [ 9.130612][ T167] ? console_flush_one_record+0x710/0x710 [ 9.130614][ T167] ? rcu_is_watching+0x16/0xd0 [ 9.130616][ T167] ? lock_acquire+0x60/0x160 [ 9.130619][ T167] ? __down_trylock_console_sem+0x5e/0xa0 [ 9.130621][ T167] ? vprintk_emit+0x320/0x3e0 [ 9.130624][ T167] vprintk_emit+0x37c/0x3e0 [ 9.130627][ T167] ? wake_up_klogd_work_func+0x90/0x90 [ 9.130629][ T167] ? do_raw_spin_unlock+0x59/0x250 [ 9.130632][ T167] ? __lock_acquire+0x518/0xc20 [ 9.130636][ T167] _printk+0xc7/0x100 [ 9.130639][ T167] ? snapshot_read.cold+0x21/0x21 [ 9.130642][ T167] ? do_raw_spin_lock+0x131/0x280 [ 9.130645][ T167] ? __rwlock_init+0x150/0x150 [ 9.130649][ T167] ? do_raw_spin_lock+0x131/0x280 [ 9.130652][ T167] do_exit.cold+0x82/0x9c [ 9.130656][ T167] ? exit_notify+0x890/0x890 [ 9.130657][ T167] ? __lock_release.isra.0+0x69/0x1a0 [ 9.130660][ T167] ? rcu_is_watching+0x16/0xd0 [ 9.130664][ T167] do_group_exit+0xb8/0x370 [ 9.130667][ T167] __x64_sys_exit_group+0x3c/0x50 [ 9.130669][ T167] x64_sys_call+0x1567/0x1570 [ 9.130671][ T167] do_syscall_64+0xff/0x530 [ 9.130675][ T167] ? irq_exit_rcu+0x1a/0x30 [ 9.130678][ T167] entry_SYSCALL_64_after_hwframe+0x4b/0x53 [ 9.130680][ T167] RIP: 0033:0x479678 [ 9.130682][ T167] Code: Unable to access opcode bytes at 0x47964e. [ 9.130683][ T167] RSP: 002b:00007ffc0e79aa38 EFLAGS: 00000246 ORIG_RAX: 00000000000000e7 [ 9.130685][ T167] RAX: ffffffffffffffda RBX: 0000000000000001 RCX: 0000000000479678 [ 9.130687][ T167] RDX: 000000000b31f708 RSI: fffffffffffffff0 RDI: 0000000000000000 [ 9.130688][ T167] RBP: 00007ffc0e79aa90 R08: 0000000000000000 R09: 000000000b3203e0 [ 9.130689][ T167] R10: 0000000000000110 R11: 0000000000000246 R12: 00007ffc0e79abc8 [ 9.130689][ T167] R13: 00007ffc0e79ac50 R14: 0000000000000000 R15: 000000000054d560 [ 9.130696][ T167]