[ 13.267106][ T199] packetdrill (199) used greatest stack depth: 24312 bytes left [ 13.267123][ T199] BUG: sleeping function called from invalid context at ./include/linux/sched/mm.h:322 [ 13.267125][ T199] in_atomic(): 1, irqs_disabled(): 1, non_block: 0, pid: 199, name: packetdrill [ 13.267127][ T199] preempt_count: 2, expected: 0 [ 13.267128][ T199] RCU nest depth: 0, expected: 0 [ 13.267129][ T199] locks held by packetdrill/199: 5, last CPU#0: [ 13.267130][ T199] #0: ffffffffb5c027b8 (low_water_lock){+.+.}-{3:3}, at: do_exit+0x887/0xdc0 [ 13.267142][ T199] #1: ffffffffb5d69cc0 (console_lock){+.+.}-{0:0}, at: vprintk_emit+0x320/0x3e0 [ 13.267147][ T199] #2: ffffffffb5d69d38 (console_srcu){....}-{0:0}, at: console_flush_one_record+0x106/0x710 [ 13.267151][ T199] #3: ffffffffb5c89660 (console_owner){....}-{0:0}, at: console_lock_spinning_enable+0x40/0x60 [ 13.267154][ T199] #4: ffffffffb5c89560 (printk_legacy_map-wait-type-override){....}-{3:3}, at: console_emit_next_record+0x1df/0x4c0 [ 13.267158][ T199] irq event stamp: 3912426 [ 13.267158][ T199] hardirqs last enabled at (3912425): [] __down_trylock_console_sem+0x86/0xa0 [ 13.267162][ T199] hardirqs last disabled at (3912426): [] console_emit_next_record+0x3d4/0x4c0 [ 13.267164][ T199] softirqs last enabled at (3912194): [] tcp_close+0x2b/0xb0 [ 13.267168][ T199] softirqs last disabled at (3912192): [] release_sock+0x21/0x240 [ 13.267172][ T199] Preemption disabled at: [ 13.267173][ T199] [<0000000000000000>] 0x0 [ 13.267180][ T199] CPU: 0 UID: 0 PID: 199 Comm: packetdrill Tainted: G W 7.2.0-virtme #1 PREEMPT(full) [ 13.267184][ T199] Tainted: [W]=WARN [ 13.267185][ T199] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011 [ 13.267187][ T199] Call Trace: [ 13.267188][ T199] [ 13.267190][ T199] dump_stack_lvl+0x6f/0xa0 [ 13.267195][ T199] __might_resched.cold+0x1fe/0x2c1 [ 13.267200][ T199] ? perf_trace_sched_switch+0x7c0/0x7c0 [ 13.267204][ T199] ? __kmalloc_noprof+0xdb/0x760 [ 13.267209][ T199] __kmalloc_noprof+0x443/0x760 [ 13.267212][ T199] ? alloc_buf.isra.0+0x4b/0x260 [ 13.267218][ T199] ? do_raw_spin_unlock+0x59/0x250 [ 13.267221][ T199] alloc_buf.isra.0+0x4b/0x260 [ 13.267225][ T199] put_chars+0x1e1/0x2f0 [ 13.267228][ T199] ? __send_to_port+0x420/0x420 [ 13.267229][ T199] ? rcu_lockdep_current_cpu_online+0x3f/0x1b0 [ 13.267234][ T199] ? validate_chain+0x38b/0xc20 [ 13.267240][ T199] hvc_console_print+0x292/0x780 [ 13.267247][ T199] ? hvc_write+0x3a0/0x3a0 [ 13.267249][ T199] ? rcu_is_watching+0x16/0xd0 [ 13.267251][ T199] ? lock_acquire+0x13c/0x160 [ 13.267256][ T199] console_emit_next_record+0x22f/0x4c0 [ 13.267259][ T199] ? devkmsg_read+0x4b0/0x4b0 [ 13.267261][ T199] ? console_flush_one_record+0x106/0x710 [ 13.267264][ T199] ? rcu_is_watching+0x16/0xd0 [ 13.267266][ T199] ? lock_acquire+0x13c/0x160 [ 13.267270][ T199] console_flush_one_record+0x46f/0x710 [ 13.267274][ T199] ? console_emit_next_record+0x4c0/0x4c0 [ 13.267275][ T199] ? __lock_acquire+0x518/0xc20 [ 13.267281][ T199] console_unlock+0xee/0x1f0 [ 13.267283][ T199] ? console_flush_one_record+0x710/0x710 [ 13.267285][ T199] ? rcu_is_watching+0x16/0xd0 [ 13.267287][ T199] ? lock_acquire+0x60/0x160 [ 13.267291][ T199] ? __down_trylock_console_sem+0x5e/0xa0 [ 13.267293][ T199] ? vprintk_emit+0x320/0x3e0 [ 13.267296][ T199] vprintk_emit+0x37c/0x3e0 [ 13.267299][ T199] ? wake_up_klogd_work_func+0x90/0x90 [ 13.267302][ T199] ? __lock_acquire+0x518/0xc20 [ 13.267306][ T199] _printk+0xc7/0x100 [ 13.267310][ T199] ? snapshot_read.cold+0x21/0x21 [ 13.267314][ T199] ? do_raw_spin_lock+0x131/0x280 [ 13.267316][ T199] ? __rwlock_init+0x150/0x150 [ 13.267321][ T199] ? do_raw_spin_lock+0x131/0x280 [ 13.267324][ T199] do_exit.cold+0x82/0x9c [ 13.267327][ T199] ? exit_notify+0x890/0x890 [ 13.267329][ T199] ? __lock_release.isra.0+0x69/0x1a0 [ 13.267332][ T199] ? rcu_is_watching+0x16/0xd0 [ 13.267336][ T199] do_group_exit+0xb8/0x370 [ 13.267339][ T199] __x64_sys_exit_group+0x3c/0x50 [ 13.267341][ T199] x64_sys_call+0x1567/0x1570 [ 13.267344][ T199] do_syscall_64+0xff/0x530 [ 13.267348][ T199] ? irq_exit_rcu+0x1a/0x30 [ 13.267351][ T199] entry_SYSCALL_64_after_hwframe+0x4b/0x53 [ 13.267353][ T199] RIP: 0033:0x479678 [ 13.267356][ T199] Code: Unable to access opcode bytes at 0x47964e. [ 13.267357][ T199] RSP: 002b:00007fff0312d9c8 EFLAGS: 00000246 ORIG_RAX: 00000000000000e7 [ 13.267359][ T199] RAX: ffffffffffffffda RBX: 0000000000000001 RCX: 0000000000479678 [ 13.267361][ T199] RDX: 000000003622e708 RSI: fffffffffffffff0 RDI: 0000000000000000 [ 13.267362][ T199] RBP: 00007fff0312da20 R08: 0000000000000000 R09: 000000003622f3e0 [ 13.267363][ T199] R10: 0000000000000110 R11: 0000000000000246 R12: 00007fff0312db58 [ 13.267364][ T199] R13: 00007fff0312dbe0 R14: 0000000000000000 R15: 000000000054d560 [ 13.267371][ T199]