[ 10.496570][ T168] packetdrill (168) used greatest stack depth: 24152 bytes left [ 10.496586][ T168] BUG: sleeping function called from invalid context at ./include/linux/sched/mm.h:322 [ 10.496588][ T168] in_atomic(): 1, irqs_disabled(): 1, non_block: 0, pid: 168, name: packetdrill [ 10.496590][ T168] preempt_count: 2, expected: 0 [ 10.496591][ T168] RCU nest depth: 0, expected: 0 [ 10.496592][ T168] locks held by packetdrill/168: 5, last CPU#0: [ 10.496594][ T168] #0: ffffffffac6027b8 (low_water_lock){+.+.}-{3:3}, at: do_exit+0x887/0xdc0 [ 10.496606][ T168] #1: ffffffffac769cc0 (console_lock){+.+.}-{0:0}, at: vprintk_emit+0x320/0x3e0 [ 10.496611][ T168] #2: ffffffffac769d38 (console_srcu){....}-{0:0}, at: console_flush_one_record+0x106/0x710 [ 10.496615][ T168] #3: ffffffffac689660 (console_owner){....}-{0:0}, at: console_lock_spinning_enable+0x40/0x60 [ 10.496618][ T168] #4: ffffffffac689560 (printk_legacy_map-wait-type-override){....}-{3:3}, at: console_emit_next_record+0x1df/0x4c0 [ 10.496622][ T168] irq event stamp: 3972620 [ 10.496623][ T168] hardirqs last enabled at (3972619): [] __down_trylock_console_sem+0x86/0xa0 [ 10.496626][ T168] hardirqs last disabled at (3972620): [] console_emit_next_record+0x3d4/0x4c0 [ 10.496628][ T168] softirqs last enabled at (3972374): [] tcp_close+0x2b/0xb0 [ 10.496632][ T168] softirqs last disabled at (3972372): [] release_sock+0x21/0x240 [ 10.496636][ T168] Preemption disabled at: [ 10.496636][ T168] [<0000000000000000>] 0x0 [ 10.496644][ T168] CPU: 0 UID: 0 PID: 168 Comm: packetdrill Tainted: G W 7.2.0-virtme #1 PREEMPT(full) [ 10.496647][ T168] Tainted: [W]=WARN [ 10.496648][ T168] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011 [ 10.496650][ T168] Call Trace: [ 10.496651][ T168] [ 10.496653][ T168] dump_stack_lvl+0x6f/0xa0 [ 10.496658][ T168] __might_resched.cold+0x1fe/0x2c1 [ 10.496663][ T168] ? perf_trace_sched_switch+0x7c0/0x7c0 [ 10.496667][ T168] ? __kmalloc_noprof+0xdb/0x760 [ 10.496672][ T168] __kmalloc_noprof+0x443/0x760 [ 10.496675][ T168] ? alloc_buf.isra.0+0x4b/0x260 [ 10.496681][ T168] ? do_raw_spin_unlock+0x59/0x250 [ 10.496684][ T168] alloc_buf.isra.0+0x4b/0x260 [ 10.496687][ T168] put_chars+0x1e1/0x2f0 [ 10.496690][ T168] ? __send_to_port+0x420/0x420 [ 10.496692][ T168] ? rcu_lockdep_current_cpu_online+0x3f/0x1b0 [ 10.496697][ T168] ? validate_chain+0x38b/0xc20 [ 10.496702][ T168] hvc_console_print+0x292/0x780 [ 10.496709][ T168] ? hvc_write+0x3a0/0x3a0 [ 10.496711][ T168] ? rcu_is_watching+0x16/0xd0 [ 10.496713][ T168] ? lock_acquire+0x13c/0x160 [ 10.496718][ T168] console_emit_next_record+0x22f/0x4c0 [ 10.496721][ T168] ? devkmsg_read+0x4b0/0x4b0 [ 10.496723][ T168] ? console_flush_one_record+0x106/0x710 [ 10.496725][ T168] ? rcu_is_watching+0x16/0xd0 [ 10.496727][ T168] ? lock_acquire+0x13c/0x160 [ 10.496732][ T168] console_flush_one_record+0x46f/0x710 [ 10.496739][ T168] ? console_emit_next_record+0x4c0/0x4c0 [ 10.496740][ T168] ? __lock_acquire+0x518/0xc20 [ 10.496746][ T168] console_unlock+0xee/0x1f0 [ 10.496748][ T168] ? console_flush_one_record+0x710/0x710 [ 10.496750][ T168] ? rcu_is_watching+0x16/0xd0 [ 10.496752][ T168] ? lock_acquire+0x60/0x160 [ 10.496756][ T168] ? __down_trylock_console_sem+0x5e/0xa0 [ 10.496758][ T168] ? vprintk_emit+0x320/0x3e0 [ 10.496760][ T168] vprintk_emit+0x37c/0x3e0 [ 10.496764][ T168] ? wake_up_klogd_work_func+0x90/0x90 [ 10.496765][ T168] ? do_raw_spin_unlock+0x59/0x250 [ 10.496769][ T168] ? __lock_acquire+0x518/0xc20 [ 10.496773][ T168] _printk+0xc7/0x100 [ 10.496777][ T168] ? snapshot_read.cold+0x21/0x21 [ 10.496780][ T168] ? do_raw_spin_lock+0x131/0x280 [ 10.496782][ T168] ? __rwlock_init+0x150/0x150 [ 10.496786][ T168] ? do_raw_spin_lock+0x131/0x280 [ 10.496790][ T168] do_exit.cold+0x82/0x9c [ 10.496793][ T168] ? exit_notify+0x890/0x890 [ 10.496795][ T168] ? __lock_release.isra.0+0x69/0x1a0 [ 10.496798][ T168] ? rcu_is_watching+0x16/0xd0 [ 10.496802][ T168] do_group_exit+0xb8/0x370 [ 10.496805][ T168] __x64_sys_exit_group+0x3c/0x50 [ 10.496807][ T168] x64_sys_call+0x1567/0x1570 [ 10.496810][ T168] do_syscall_64+0xff/0x530 [ 10.496814][ T168] ? irq_exit_rcu+0x1a/0x30 [ 10.496817][ T168] entry_SYSCALL_64_after_hwframe+0x4b/0x53 [ 10.496819][ T168] RIP: 0033:0x479678 [ 10.496821][ T168] Code: Unable to access opcode bytes at 0x47964e. [ 10.496822][ T168] RSP: 002b:00007ffd24458a78 EFLAGS: 00000246 ORIG_RAX: 00000000000000e7 [ 10.496825][ T168] RAX: ffffffffffffffda RBX: 0000000000000001 RCX: 0000000000479678 [ 10.496826][ T168] RDX: 000000003369a708 RSI: fffffffffffffff0 RDI: 0000000000000000 [ 10.496827][ T168] RBP: 00007ffd24458ad0 R08: 0000000000000000 R09: 000000003369b3e0 [ 10.496828][ T168] R10: 0000000000000110 R11: 0000000000000246 R12: 00007ffd24458c08 [ 10.496829][ T168] R13: 00007ffd24458c90 R14: 0000000000000000 R15: 000000000054d560 [ 10.496836][ T168]