[ 11.943881][ T199] packetdrill (199) used greatest stack depth: 23616 bytes left [ 11.943896][ T199] BUG: sleeping function called from invalid context at ./include/linux/sched/mm.h:322 [ 11.943898][ T199] in_atomic(): 1, irqs_disabled(): 1, non_block: 0, pid: 199, name: packetdrill [ 11.943900][ T199] preempt_count: 2, expected: 0 [ 11.943901][ T199] RCU nest depth: 0, expected: 0 [ 11.943902][ T199] locks held by packetdrill/199: 5, last CPU#3: [ 11.943904][ T199] #0: ffffffff918027b8 (low_water_lock){+.+.}-{3:3}, at: do_exit+0x887/0xdc0 [ 11.943916][ T199] #1: ffffffff91969cc0 (console_lock){+.+.}-{0:0}, at: vprintk_emit+0x320/0x3e0 [ 11.943921][ T199] #2: ffffffff91969d38 (console_srcu){....}-{0:0}, at: console_flush_one_record+0x106/0x710 [ 11.943925][ T199] #3: ffffffff91889660 (console_owner){....}-{0:0}, at: console_lock_spinning_enable+0x40/0x60 [ 11.943928][ T199] #4: ffffffff91889560 (printk_legacy_map-wait-type-override){....}-{3:3}, at: console_emit_next_record+0x1df/0x4c0 [ 11.943932][ T199] irq event stamp: 3928158 [ 11.943933][ T199] hardirqs last enabled at (3928157): [] __down_trylock_console_sem+0x86/0xa0 [ 11.943936][ T199] hardirqs last disabled at (3928158): [] console_emit_next_record+0x3d4/0x4c0 [ 11.943937][ T199] softirqs last enabled at (3927908): [] tcp_close+0x2b/0xb0 [ 11.943941][ T199] softirqs last disabled at (3927906): [] release_sock+0x21/0x240 [ 11.943945][ T199] Preemption disabled at: [ 11.943945][ T199] [<0000000000000000>] 0x0 [ 11.943952][ T199] CPU: 3 UID: 0 PID: 199 Comm: packetdrill Tainted: G W 7.2.0-virtme #1 PREEMPT(full) [ 11.943956][ T199] Tainted: [W]=WARN [ 11.943957][ T199] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011 [ 11.943959][ T199] Call Trace: [ 11.943960][ T199] [ 11.943962][ T199] dump_stack_lvl+0x6f/0xa0 [ 11.943967][ T199] __might_resched.cold+0x1fe/0x2c1 [ 11.943972][ T199] ? perf_trace_sched_switch+0x7c0/0x7c0 [ 11.943975][ T199] ? __kmalloc_noprof+0xdb/0x760 [ 11.943981][ T199] __kmalloc_noprof+0x443/0x760 [ 11.943983][ T199] ? alloc_buf.isra.0+0x4b/0x260 [ 11.943990][ T199] ? do_raw_spin_unlock+0x59/0x250 [ 11.943993][ T199] alloc_buf.isra.0+0x4b/0x260 [ 11.943996][ T199] put_chars+0x1e1/0x2f0 [ 11.943999][ T199] ? __send_to_port+0x420/0x420 [ 11.944001][ T199] ? rcu_lockdep_current_cpu_online+0x3f/0x1b0 [ 11.944005][ T199] ? validate_chain+0x38b/0xc20 [ 11.944011][ T199] hvc_console_print+0x292/0x780 [ 11.944018][ T199] ? hvc_write+0x3a0/0x3a0 [ 11.944020][ T199] ? rcu_is_watching+0x16/0xd0 [ 11.944022][ T199] ? lock_acquire+0x13c/0x160 [ 11.944027][ T199] console_emit_next_record+0x22f/0x4c0 [ 11.944030][ T199] ? devkmsg_read+0x4b0/0x4b0 [ 11.944031][ T199] ? console_flush_one_record+0x106/0x710 [ 11.944034][ T199] ? rcu_is_watching+0x16/0xd0 [ 11.944036][ T199] ? lock_acquire+0x13c/0x160 [ 11.944040][ T199] console_flush_one_record+0x46f/0x710 [ 11.944044][ T199] ? console_emit_next_record+0x4c0/0x4c0 [ 11.944046][ T199] ? __lock_acquire+0x518/0xc20 [ 11.944051][ T199] console_unlock+0xee/0x1f0 [ 11.944053][ T199] ? console_flush_one_record+0x710/0x710 [ 11.944055][ T199] ? rcu_is_watching+0x16/0xd0 [ 11.944056][ T199] ? lock_acquire+0x60/0x160 [ 11.944060][ T199] ? __down_trylock_console_sem+0x5e/0xa0 [ 11.944062][ T199] ? vprintk_emit+0x320/0x3e0 [ 11.944065][ T199] vprintk_emit+0x37c/0x3e0 [ 11.944069][ T199] ? wake_up_klogd_work_func+0x90/0x90 [ 11.944070][ T199] ? do_raw_spin_unlock+0x59/0x250 [ 11.944073][ T199] ? __lock_acquire+0x518/0xc20 [ 11.944077][ T199] _printk+0xc7/0x100 [ 11.944081][ T199] ? snapshot_read.cold+0x21/0x21 [ 11.944084][ T199] ? do_raw_spin_lock+0x131/0x280 [ 11.944087][ T199] ? __rwlock_init+0x150/0x150 [ 11.944091][ T199] ? do_raw_spin_lock+0x131/0x280 [ 11.944094][ T199] do_exit.cold+0x82/0x9c [ 11.944097][ T199] ? exit_notify+0x890/0x890 [ 11.944099][ T199] ? __lock_release.isra.0+0x69/0x1a0 [ 11.944102][ T199] ? rcu_is_watching+0x16/0xd0 [ 11.944106][ T199] do_group_exit+0xb8/0x370 [ 11.944109][ T199] __x64_sys_exit_group+0x3c/0x50 [ 11.944111][ T199] x64_sys_call+0x1567/0x1570 [ 11.944114][ T199] do_syscall_64+0xff/0x530 [ 11.944117][ T199] ? irq_exit_rcu+0x1a/0x30 [ 11.944120][ T199] entry_SYSCALL_64_after_hwframe+0x4b/0x53 [ 11.944123][ T199] RIP: 0033:0x479678 [ 11.944125][ T199] Code: Unable to access opcode bytes at 0x47964e. [ 11.944126][ T199] RSP: 002b:00007fff49782f78 EFLAGS: 00000246 ORIG_RAX: 00000000000000e7 [ 11.944128][ T199] RAX: ffffffffffffffda RBX: 0000000000000001 RCX: 0000000000479678 [ 11.944130][ T199] RDX: 000000002e883708 RSI: fffffffffffffff0 RDI: 0000000000000000 [ 11.944131][ T199] RBP: 00007fff49782fd0 R08: 0000000000000000 R09: 000000002e8843e0 [ 11.944132][ T199] R10: 0000000000000110 R11: 0000000000000246 R12: 00007fff49783108 [ 11.944133][ T199] R13: 00007fff49783190 R14: 0000000000000000 R15: 000000000054d560 [ 11.944140][ T199]