[ 12.890330][ T167] packetdrill (167) used greatest stack depth: 24424 bytes left [ 12.890346][ T167] BUG: sleeping function called from invalid context at ./include/linux/sched/mm.h:322 [ 12.890348][ T167] in_atomic(): 1, irqs_disabled(): 1, non_block: 0, pid: 167, name: packetdrill [ 12.890350][ T167] preempt_count: 2, expected: 0 [ 12.890350][ T167] RCU nest depth: 0, expected: 0 [ 12.890351][ T167] locks held by packetdrill/167: 5, last CPU#0: [ 12.890354][ T167] #0: ffffffffa9c027b8 (low_water_lock){+.+.}-{3:3}, at: do_exit+0x887/0xdc0 [ 12.890366][ T167] #1: ffffffffa9d69cc0 (console_lock){+.+.}-{0:0}, at: vprintk_emit+0x320/0x3e0 [ 12.890371][ T167] #2: ffffffffa9d69d38 (console_srcu){....}-{0:0}, at: console_flush_one_record+0x106/0x710 [ 12.890374][ T167] #3: ffffffffa9c89660 (console_owner){....}-{0:0}, at: console_lock_spinning_enable+0x40/0x60 [ 12.890377][ T167] #4: ffffffffa9c89560 (printk_legacy_map-wait-type-override){....}-{3:3}, at: console_emit_next_record+0x1df/0x4c0 [ 12.890381][ T167] irq event stamp: 3666514 [ 12.890381][ T167] hardirqs last enabled at (3666513): [] __down_trylock_console_sem+0x86/0xa0 [ 12.890385][ T167] hardirqs last disabled at (3666514): [] console_emit_next_record+0x3d4/0x4c0 [ 12.890386][ T167] softirqs last enabled at (3666284): [] tcp_close+0x2b/0xb0 [ 12.890391][ T167] softirqs last disabled at (3666282): [] release_sock+0x21/0x240 [ 12.890394][ T167] Preemption disabled at: [ 12.890395][ T167] [<0000000000000000>] 0x0 [ 12.890402][ T167] CPU: 0 UID: 0 PID: 167 Comm: packetdrill Tainted: G W 7.2.0-virtme #1 PREEMPT(full) [ 12.890405][ T167] Tainted: [W]=WARN [ 12.890406][ T167] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011 [ 12.890407][ T167] Call Trace: [ 12.890409][ T167] [ 12.890411][ T167] dump_stack_lvl+0x6f/0xa0 [ 12.890416][ T167] __might_resched.cold+0x1fe/0x2c1 [ 12.890421][ T167] ? perf_trace_sched_switch+0x7c0/0x7c0 [ 12.890424][ T167] ? __kmalloc_noprof+0xdb/0x760 [ 12.890429][ T167] __kmalloc_noprof+0x443/0x760 [ 12.890431][ T167] ? alloc_buf.isra.0+0x4b/0x260 [ 12.890437][ T167] ? do_raw_spin_unlock+0x59/0x250 [ 12.890440][ T167] alloc_buf.isra.0+0x4b/0x260 [ 12.890443][ T167] put_chars+0x1e1/0x2f0 [ 12.890446][ T167] ? __send_to_port+0x420/0x420 [ 12.890448][ T167] ? rcu_lockdep_current_cpu_online+0x3f/0x1b0 [ 12.890452][ T167] ? validate_chain+0x38b/0xc20 [ 12.890457][ T167] hvc_console_print+0x292/0x780 [ 12.890464][ T167] ? hvc_write+0x3a0/0x3a0 [ 12.890466][ T167] ? rcu_is_watching+0x16/0xd0 [ 12.890468][ T167] ? lock_acquire+0x13c/0x160 [ 12.890472][ T167] console_emit_next_record+0x22f/0x4c0 [ 12.890475][ T167] ? devkmsg_read+0x4b0/0x4b0 [ 12.890477][ T167] ? console_flush_one_record+0x106/0x710 [ 12.890479][ T167] ? rcu_is_watching+0x16/0xd0 [ 12.890481][ T167] ? lock_acquire+0x13c/0x160 [ 12.890485][ T167] console_flush_one_record+0x46f/0x710 [ 12.890488][ T167] ? console_emit_next_record+0x4c0/0x4c0 [ 12.890490][ T167] ? __lock_acquire+0x518/0xc20 [ 12.890495][ T167] console_unlock+0xee/0x1f0 [ 12.890497][ T167] ? console_flush_one_record+0x710/0x710 [ 12.890498][ T167] ? rcu_is_watching+0x16/0xd0 [ 12.890500][ T167] ? lock_acquire+0x60/0x160 [ 12.890504][ T167] ? __down_trylock_console_sem+0x5e/0xa0 [ 12.890506][ T167] ? vprintk_emit+0x320/0x3e0 [ 12.890509][ T167] vprintk_emit+0x37c/0x3e0 [ 12.890512][ T167] ? wake_up_klogd_work_func+0x90/0x90 [ 12.890515][ T167] ? __lock_acquire+0x518/0xc20 [ 12.890518][ T167] _printk+0xc7/0x100 [ 12.890522][ T167] ? snapshot_read.cold+0x21/0x21 [ 12.890525][ T167] ? do_raw_spin_lock+0x131/0x280 [ 12.890527][ T167] ? __rwlock_init+0x150/0x150 [ 12.890531][ T167] ? do_raw_spin_lock+0x131/0x280 [ 12.890534][ T167] do_exit.cold+0x82/0x9c [ 12.890537][ T167] ? exit_notify+0x890/0x890 [ 12.890539][ T167] ? __lock_release.isra.0+0x69/0x1a0 [ 12.890541][ T167] ? rcu_is_watching+0x16/0xd0 [ 12.890545][ T167] do_group_exit+0xb8/0x370 [ 12.890548][ T167] __x64_sys_exit_group+0x3c/0x50 [ 12.890550][ T167] x64_sys_call+0x1567/0x1570 [ 12.890553][ T167] do_syscall_64+0xff/0x530 [ 12.890556][ T167] ? irq_exit_rcu+0x1a/0x30 [ 12.890559][ T167] entry_SYSCALL_64_after_hwframe+0x4b/0x53 [ 12.890561][ T167] RIP: 0033:0x479678 [ 12.890563][ T167] Code: Unable to access opcode bytes at 0x47964e. [ 12.890564][ T167] RSP: 002b:00007fff92fc5908 EFLAGS: 00000246 ORIG_RAX: 00000000000000e7 [ 12.890567][ T167] RAX: ffffffffffffffda RBX: 0000000000000001 RCX: 0000000000479678 [ 12.890568][ T167] RDX: 0000000036678708 RSI: fffffffffffffff0 RDI: 0000000000000000 [ 12.890569][ T167] RBP: 00007fff92fc5960 R08: 0000000000000000 R09: 00000000366793e0 [ 12.890570][ T167] R10: 0000000000000110 R11: 0000000000000246 R12: 00007fff92fc5a98 [ 12.890571][ T167] R13: 00007fff92fc5b20 R14: 0000000000000000 R15: 000000000054d560 [ 12.890577][ T167]