[ 10.586850][ T168] packetdrill (168) used greatest stack depth: 24600 bytes left [ 10.586867][ T168] BUG: sleeping function called from invalid context at ./include/linux/sched/mm.h:322 [ 10.586869][ T168] in_atomic(): 1, irqs_disabled(): 1, non_block: 0, pid: 168, name: packetdrill [ 10.586871][ T168] preempt_count: 2, expected: 0 [ 10.586872][ T168] RCU nest depth: 0, expected: 0 [ 10.586873][ T168] locks held by packetdrill/168: 5, last CPU#3: [ 10.586875][ T168] #0: ffffffffbc4027b8 (low_water_lock){+.+.}-{3:3}, at: do_exit+0x887/0xdc0 [ 10.586888][ T168] #1: ffffffffbc569cc0 (console_lock){+.+.}-{0:0}, at: vprintk_emit+0x320/0x3e0 [ 10.586897][ T168] #2: ffffffffbc569d38 (console_srcu){....}-{0:0}, at: console_flush_one_record+0x106/0x710 [ 10.586900][ T168] #3: ffffffffbc489660 (console_owner){....}-{0:0}, at: console_lock_spinning_enable+0x40/0x60 [ 10.586904][ T168] #4: ffffffffbc489560 (printk_legacy_map-wait-type-override){....}-{3:3}, at: console_emit_next_record+0x1df/0x4c0 [ 10.586907][ T168] irq event stamp: 4004704 [ 10.586908][ T168] hardirqs last enabled at (4004703): [] __down_trylock_console_sem+0x86/0xa0 [ 10.586911][ T168] hardirqs last disabled at (4004704): [] console_emit_next_record+0x3d4/0x4c0 [ 10.586913][ T168] softirqs last enabled at (4004458): [] tcp_close+0x2b/0xb0 [ 10.586917][ T168] softirqs last disabled at (4004456): [] release_sock+0x21/0x240 [ 10.586921][ T168] Preemption disabled at: [ 10.586921][ T168] [<0000000000000000>] 0x0 [ 10.586929][ T168] CPU: 3 UID: 0 PID: 168 Comm: packetdrill Tainted: G W 7.2.0-virtme #1 PREEMPT(full) [ 10.586932][ T168] Tainted: [W]=WARN [ 10.586934][ T168] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011 [ 10.586935][ T168] Call Trace: [ 10.586937][ T168] [ 10.586938][ T168] dump_stack_lvl+0x6f/0xa0 [ 10.586944][ T168] __might_resched.cold+0x1fe/0x2c1 [ 10.586949][ T168] ? perf_trace_sched_switch+0x7c0/0x7c0 [ 10.586952][ T168] ? __kmalloc_noprof+0xdb/0x760 [ 10.586957][ T168] __kmalloc_noprof+0x443/0x760 [ 10.586960][ T168] ? alloc_buf.isra.0+0x4b/0x260 [ 10.586966][ T168] ? do_raw_spin_unlock+0x59/0x250 [ 10.586969][ T168] alloc_buf.isra.0+0x4b/0x260 [ 10.586972][ T168] put_chars+0x1e1/0x2f0 [ 10.586975][ T168] ? __send_to_port+0x420/0x420 [ 10.586977][ T168] ? rcu_lockdep_current_cpu_online+0x3f/0x1b0 [ 10.586981][ T168] ? validate_chain+0x38b/0xc20 [ 10.586986][ T168] hvc_console_print+0x292/0x780 [ 10.586993][ T168] ? hvc_write+0x3a0/0x3a0 [ 10.586996][ T168] ? rcu_is_watching+0x16/0xd0 [ 10.586998][ T168] ? lock_acquire+0x13c/0x160 [ 10.587002][ T168] console_emit_next_record+0x22f/0x4c0 [ 10.587005][ T168] ? devkmsg_read+0x4b0/0x4b0 [ 10.587007][ T168] ? console_flush_one_record+0x106/0x710 [ 10.587009][ T168] ? rcu_is_watching+0x16/0xd0 [ 10.587011][ T168] ? lock_acquire+0x13c/0x160 [ 10.587015][ T168] console_flush_one_record+0x46f/0x710 [ 10.587019][ T168] ? console_emit_next_record+0x4c0/0x4c0 [ 10.587020][ T168] ? __lock_acquire+0x518/0xc20 [ 10.587026][ T168] console_unlock+0xee/0x1f0 [ 10.587028][ T168] ? console_flush_one_record+0x710/0x710 [ 10.587029][ T168] ? rcu_is_watching+0x16/0xd0 [ 10.587031][ T168] ? lock_acquire+0x60/0x160 [ 10.587035][ T168] ? __down_trylock_console_sem+0x5e/0xa0 [ 10.587037][ T168] ? vprintk_emit+0x320/0x3e0 [ 10.587040][ T168] vprintk_emit+0x37c/0x3e0 [ 10.587043][ T168] ? wake_up_klogd_work_func+0x90/0x90 [ 10.587044][ T168] ? do_raw_spin_unlock+0x59/0x250 [ 10.587048][ T168] ? __lock_acquire+0x518/0xc20 [ 10.587051][ T168] _printk+0xc7/0x100 [ 10.587056][ T168] ? snapshot_read.cold+0x21/0x21 [ 10.587058][ T168] ? do_raw_spin_lock+0x131/0x280 [ 10.587061][ T168] ? __rwlock_init+0x150/0x150 [ 10.587065][ T168] ? do_raw_spin_lock+0x131/0x280 [ 10.587068][ T168] do_exit.cold+0x82/0x9c [ 10.587072][ T168] ? exit_notify+0x890/0x890 [ 10.587073][ T168] ? __lock_release.isra.0+0x69/0x1a0 [ 10.587076][ T168] ? rcu_is_watching+0x16/0xd0 [ 10.587080][ T168] do_group_exit+0xb8/0x370 [ 10.587083][ T168] __x64_sys_exit_group+0x3c/0x50 [ 10.587085][ T168] x64_sys_call+0x1567/0x1570 [ 10.587088][ T168] do_syscall_64+0xff/0x530 [ 10.587091][ T168] ? irq_exit_rcu+0x1a/0x30 [ 10.587095][ T168] entry_SYSCALL_64_after_hwframe+0x4b/0x53 [ 10.587097][ T168] RIP: 0033:0x479678 [ 10.587099][ T168] Code: Unable to access opcode bytes at 0x47964e. [ 10.587100][ T168] RSP: 002b:00007fffe75a1fe8 EFLAGS: 00000246 ORIG_RAX: 00000000000000e7 [ 10.587103][ T168] RAX: ffffffffffffffda RBX: 0000000000000001 RCX: 0000000000479678 [ 10.587104][ T168] RDX: 0000000010265708 RSI: fffffffffffffff0 RDI: 0000000000000000 [ 10.587105][ T168] RBP: 00007fffe75a2040 R08: 0000000000000000 R09: 00000000102663e0 [ 10.587106][ T168] R10: 0000000000000110 R11: 0000000000000246 R12: 00007fffe75a2178 [ 10.587107][ T168] R13: 00007fffe75a2200 R14: 0000000000000000 R15: 000000000054d560 [ 10.587114][ T168]