[ 12.666274][ T220] packetdrill (220) used greatest stack depth: 24056 bytes left [ 12.666291][ T220] BUG: sleeping function called from invalid context at ./include/linux/sched/mm.h:322 [ 12.666293][ T220] in_atomic(): 1, irqs_disabled(): 1, non_block: 0, pid: 220, name: packetdrill [ 12.666295][ T220] preempt_count: 2, expected: 0 [ 12.666296][ T220] RCU nest depth: 0, expected: 0 [ 12.666297][ T220] locks held by packetdrill/220: 5, last CPU#3: [ 12.666299][ T220] #0: ffffffffb5e027b8 (low_water_lock){+.+.}-{3:3}, at: do_exit+0x887/0xdc0 [ 12.666311][ T220] #1: ffffffffb5f69cc0 (console_lock){+.+.}-{0:0}, at: vprintk_emit+0x320/0x3e0 [ 12.666317][ T220] #2: ffffffffb5f69d38 (console_srcu){....}-{0:0}, at: console_flush_one_record+0x106/0x710 [ 12.666320][ T220] #3: ffffffffb5e89660 (console_owner){....}-{0:0}, at: console_lock_spinning_enable+0x40/0x60 [ 12.666323][ T220] #4: ffffffffb5e89560 (printk_legacy_map-wait-type-override){....}-{3:3}, at: console_emit_next_record+0x1df/0x4c0 [ 12.666326][ T220] irq event stamp: 3646740 [ 12.666327][ T220] hardirqs last enabled at (3646739): [] __down_trylock_console_sem+0x86/0xa0 [ 12.666331][ T220] hardirqs last disabled at (3646740): [] console_emit_next_record+0x3d4/0x4c0 [ 12.666332][ T220] softirqs last enabled at (3646496): [] tcp_close+0x2b/0xb0 [ 12.666337][ T220] softirqs last disabled at (3646494): [] release_sock+0x21/0x240 [ 12.666340][ T220] Preemption disabled at: [ 12.666341][ T220] [<0000000000000000>] 0x0 [ 12.666348][ T220] CPU: 3 UID: 0 PID: 220 Comm: packetdrill Tainted: G W 7.2.0-virtme #1 PREEMPT(full) [ 12.666351][ T220] Tainted: [W]=WARN [ 12.666352][ T220] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011 [ 12.666354][ T220] Call Trace: [ 12.666356][ T220] [ 12.666357][ T220] dump_stack_lvl+0x6f/0xa0 [ 12.666362][ T220] __might_resched.cold+0x1fe/0x2c1 [ 12.666367][ T220] ? perf_trace_sched_switch+0x7c0/0x7c0 [ 12.666370][ T220] ? __kmalloc_noprof+0xdb/0x760 [ 12.666376][ T220] __kmalloc_noprof+0x443/0x760 [ 12.666378][ T220] ? alloc_buf.isra.0+0x4b/0x260 [ 12.666384][ T220] ? do_raw_spin_unlock+0x59/0x250 [ 12.666387][ T220] alloc_buf.isra.0+0x4b/0x260 [ 12.666390][ T220] put_chars+0x1e1/0x2f0 [ 12.666393][ T220] ? __send_to_port+0x420/0x420 [ 12.666402][ T220] ? rcu_lockdep_current_cpu_online+0x3f/0x1b0 [ 12.666406][ T220] ? validate_chain+0x38b/0xc20 [ 12.666411][ T220] hvc_console_print+0x292/0x780 [ 12.666419][ T220] ? hvc_write+0x3a0/0x3a0 [ 12.666421][ T220] ? rcu_is_watching+0x16/0xd0 [ 12.666423][ T220] ? lock_acquire+0x13c/0x160 [ 12.666427][ T220] console_emit_next_record+0x22f/0x4c0 [ 12.666430][ T220] ? devkmsg_read+0x4b0/0x4b0 [ 12.666432][ T220] ? console_flush_one_record+0x106/0x710 [ 12.666434][ T220] ? rcu_is_watching+0x16/0xd0 [ 12.666436][ T220] ? lock_acquire+0x13c/0x160 [ 12.666440][ T220] console_flush_one_record+0x46f/0x710 [ 12.666444][ T220] ? console_emit_next_record+0x4c0/0x4c0 [ 12.666445][ T220] ? __lock_acquire+0x518/0xc20 [ 12.666450][ T220] console_unlock+0xee/0x1f0 [ 12.666453][ T220] ? console_flush_one_record+0x710/0x710 [ 12.666454][ T220] ? rcu_is_watching+0x16/0xd0 [ 12.666456][ T220] ? lock_acquire+0x60/0x160 [ 12.666460][ T220] ? __down_trylock_console_sem+0x5e/0xa0 [ 12.666461][ T220] ? vprintk_emit+0x320/0x3e0 [ 12.666464][ T220] vprintk_emit+0x37c/0x3e0 [ 12.666467][ T220] ? wake_up_klogd_work_func+0x90/0x90 [ 12.666469][ T220] ? do_raw_spin_unlock+0x59/0x250 [ 12.666472][ T220] ? __lock_acquire+0x518/0xc20 [ 12.666476][ T220] _printk+0xc7/0x100 [ 12.666480][ T220] ? snapshot_read.cold+0x21/0x21 [ 12.666483][ T220] ? do_raw_spin_lock+0x131/0x280 [ 12.666486][ T220] ? __rwlock_init+0x150/0x150 [ 12.666492][ T220] ? do_raw_spin_lock+0x131/0x280 [ 12.666497][ T220] do_exit.cold+0x82/0x9c [ 12.666502][ T220] ? exit_notify+0x890/0x890 [ 12.666504][ T220] ? __lock_release.isra.0+0x69/0x1a0 [ 12.666508][ T220] ? rcu_is_watching+0x16/0xd0 [ 12.666513][ T220] do_group_exit+0xb8/0x370 [ 12.666516][ T220] __x64_sys_exit_group+0x3c/0x50 [ 12.666518][ T220] x64_sys_call+0x1567/0x1570 [ 12.666521][ T220] do_syscall_64+0xff/0x530 [ 12.666525][ T220] ? irq_exit_rcu+0x1a/0x30 [ 12.666528][ T220] entry_SYSCALL_64_after_hwframe+0x4b/0x53 [ 12.666531][ T220] RIP: 0033:0x479678 [ 12.666533][ T220] Code: Unable to access opcode bytes at 0x47964e. [ 12.666534][ T220] RSP: 002b:00007fff67b62068 EFLAGS: 00000246 ORIG_RAX: 00000000000000e7 [ 12.666537][ T220] RAX: ffffffffffffffda RBX: 0000000000000001 RCX: 0000000000479678 [ 12.666538][ T220] RDX: 0000000023820708 RSI: fffffffffffffff0 RDI: 0000000000000000 [ 12.666539][ T220] RBP: 00007fff67b620c0 R08: 0000000000000000 R09: 00000000238213e0 [ 12.666540][ T220] R10: 0000000000000110 R11: 0000000000000246 R12: 00007fff67b621f8 [ 12.666541][ T220] R13: 00007fff67b62280 R14: 0000000000000000 R15: 000000000054d560 [ 12.666547][ T220]