[ 11.532948][ T200] packetdrill (200) used greatest stack depth: 24520 bytes left [ 11.532965][ T200] BUG: sleeping function called from invalid context at ./include/linux/sched/mm.h:322 [ 11.532967][ T200] in_atomic(): 1, irqs_disabled(): 1, non_block: 0, pid: 200, name: packetdrill [ 11.532969][ T200] preempt_count: 2, expected: 0 [ 11.532970][ T200] RCU nest depth: 0, expected: 0 [ 11.532971][ T200] locks held by packetdrill/200: 5, last CPU#3: [ 11.532973][ T200] #0: ffffffffa7e027b8 (low_water_lock){+.+.}-{3:3}, at: do_exit+0x887/0xdc0 [ 11.532985][ T200] #1: ffffffffa7f69cc0 (console_lock){+.+.}-{0:0}, at: vprintk_emit+0x320/0x3e0 [ 11.532991][ T200] #2: ffffffffa7f69d38 (console_srcu){....}-{0:0}, at: console_flush_one_record+0x106/0x710 [ 11.532994][ T200] #3: ffffffffa7e89660 (console_owner){....}-{0:0}, at: console_lock_spinning_enable+0x40/0x60 [ 11.532998][ T200] #4: ffffffffa7e89560 (printk_legacy_map-wait-type-override){....}-{3:3}, at: console_emit_next_record+0x1df/0x4c0 [ 11.533001][ T200] irq event stamp: 4020600 [ 11.533002][ T200] hardirqs last enabled at (4020599): [] __down_trylock_console_sem+0x86/0xa0 [ 11.533005][ T200] hardirqs last disabled at (4020600): [] console_emit_next_record+0x3d4/0x4c0 [ 11.533007][ T200] softirqs last enabled at (4020356): [] tcp_close+0x2b/0xb0 [ 11.533011][ T200] softirqs last disabled at (4020354): [] release_sock+0x21/0x240 [ 11.533015][ T200] Preemption disabled at: [ 11.533016][ T200] [<0000000000000000>] 0x0 [ 11.533022][ T200] CPU: 3 UID: 0 PID: 200 Comm: packetdrill Tainted: G W 7.2.0-virtme #1 PREEMPT(full) [ 11.533025][ T200] Tainted: [W]=WARN [ 11.533026][ T200] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011 [ 11.533032][ T200] Call Trace: [ 11.533034][ T200] [ 11.533036][ T200] dump_stack_lvl+0x6f/0xa0 [ 11.533041][ T200] __might_resched.cold+0x1fe/0x2c1 [ 11.533046][ T200] ? perf_trace_sched_switch+0x7c0/0x7c0 [ 11.533049][ T200] ? __kmalloc_noprof+0xdb/0x760 [ 11.533054][ T200] __kmalloc_noprof+0x443/0x760 [ 11.533057][ T200] ? alloc_buf.isra.0+0x4b/0x260 [ 11.533063][ T200] ? do_raw_spin_unlock+0x59/0x250 [ 11.533065][ T200] alloc_buf.isra.0+0x4b/0x260 [ 11.533069][ T200] put_chars+0x1e1/0x2f0 [ 11.533072][ T200] ? __send_to_port+0x420/0x420 [ 11.533074][ T200] ? rcu_lockdep_current_cpu_online+0x3f/0x1b0 [ 11.533077][ T200] ? validate_chain+0x38b/0xc20 [ 11.533083][ T200] hvc_console_print+0x292/0x780 [ 11.533089][ T200] ? hvc_write+0x3a0/0x3a0 [ 11.533092][ T200] ? rcu_is_watching+0x16/0xd0 [ 11.533094][ T200] ? lock_acquire+0x13c/0x160 [ 11.533098][ T200] console_emit_next_record+0x22f/0x4c0 [ 11.533101][ T200] ? devkmsg_read+0x4b0/0x4b0 [ 11.533102][ T200] ? console_flush_one_record+0x106/0x710 [ 11.533105][ T200] ? rcu_is_watching+0x16/0xd0 [ 11.533107][ T200] ? lock_acquire+0x13c/0x160 [ 11.533111][ T200] console_flush_one_record+0x46f/0x710 [ 11.533114][ T200] ? console_emit_next_record+0x4c0/0x4c0 [ 11.533116][ T200] ? __lock_acquire+0x518/0xc20 [ 11.533121][ T200] console_unlock+0xee/0x1f0 [ 11.533123][ T200] ? console_flush_one_record+0x710/0x710 [ 11.533125][ T200] ? rcu_is_watching+0x16/0xd0 [ 11.533126][ T200] ? lock_acquire+0x60/0x160 [ 11.533130][ T200] ? __down_trylock_console_sem+0x5e/0xa0 [ 11.533132][ T200] ? vprintk_emit+0x320/0x3e0 [ 11.533135][ T200] vprintk_emit+0x37c/0x3e0 [ 11.533138][ T200] ? wake_up_klogd_work_func+0x90/0x90 [ 11.533140][ T200] ? do_raw_spin_unlock+0x59/0x250 [ 11.533143][ T200] ? __lock_acquire+0x518/0xc20 [ 11.533147][ T200] _printk+0xc7/0x100 [ 11.533150][ T200] ? snapshot_read.cold+0x21/0x21 [ 11.533153][ T200] ? do_raw_spin_lock+0x131/0x280 [ 11.533156][ T200] ? __rwlock_init+0x150/0x150 [ 11.533160][ T200] ? do_raw_spin_lock+0x131/0x280 [ 11.533163][ T200] do_exit.cold+0x82/0x9c [ 11.533166][ T200] ? exit_notify+0x890/0x890 [ 11.533168][ T200] ? __lock_release.isra.0+0x69/0x1a0 [ 11.533171][ T200] ? rcu_is_watching+0x16/0xd0 [ 11.533174][ T200] do_group_exit+0xb8/0x370 [ 11.533177][ T200] __x64_sys_exit_group+0x3c/0x50 [ 11.533179][ T200] x64_sys_call+0x1567/0x1570 [ 11.533182][ T200] do_syscall_64+0xff/0x530 [ 11.533186][ T200] ? irq_exit_rcu+0x1a/0x30 [ 11.533188][ T200] entry_SYSCALL_64_after_hwframe+0x4b/0x53 [ 11.533191][ T200] RIP: 0033:0x479678 [ 11.533193][ T200] Code: Unable to access opcode bytes at 0x47964e. [ 11.533194][ T200] RSP: 002b:00007fff50f1fd18 EFLAGS: 00000246 ORIG_RAX: 00000000000000e7 [ 11.533196][ T200] RAX: ffffffffffffffda RBX: 0000000000000001 RCX: 0000000000479678 [ 11.533198][ T200] RDX: 000000002c4e4708 RSI: fffffffffffffff0 RDI: 0000000000000000 [ 11.533199][ T200] RBP: 00007fff50f1fd70 R08: 0000000000000000 R09: 000000002c4e53e0 [ 11.533200][ T200] R10: 0000000000000110 R11: 0000000000000246 R12: 00007fff50f1fea8 [ 11.533200][ T200] R13: 00007fff50f1ff30 R14: 0000000000000000 R15: 000000000054d560 [ 11.533207][ T200]