[ 9.536510][ T167] packetdrill (167) used greatest stack depth: 24232 bytes left [ 9.536524][ T167] BUG: sleeping function called from invalid context at ./include/linux/sched/mm.h:322 [ 9.536526][ T167] in_atomic(): 1, irqs_disabled(): 1, non_block: 0, pid: 167, name: packetdrill [ 9.536528][ T167] preempt_count: 2, expected: 0 [ 9.536528][ T167] RCU nest depth: 0, expected: 0 [ 9.536529][ T167] locks held by packetdrill/167: 5, last CPU#3: [ 9.536531][ T167] #0: ffffffffb38027b8 (low_water_lock){+.+.}-{3:3}, at: do_exit+0x887/0xdc0 [ 9.536543][ T167] #1: ffffffffb3969cc0 (console_lock){+.+.}-{0:0}, at: vprintk_emit+0x320/0x3e0 [ 9.536548][ T167] #2: ffffffffb3969d38 (console_srcu){....}-{0:0}, at: console_flush_one_record+0x106/0x710 [ 9.536551][ T167] #3: ffffffffb3889660 (console_owner){....}-{0:0}, at: console_lock_spinning_enable+0x40/0x60 [ 9.536554][ T167] #4: ffffffffb3889560 (printk_legacy_map-wait-type-override){....}-{3:3}, at: console_emit_next_record+0x1df/0x4c0 [ 9.536557][ T167] irq event stamp: 4449680 [ 9.536558][ T167] hardirqs last enabled at (4449679): [] __down_trylock_console_sem+0x86/0xa0 [ 9.536561][ T167] hardirqs last disabled at (4449680): [] console_emit_next_record+0x3d4/0x4c0 [ 9.536563][ T167] softirqs last enabled at (4449434): [] tcp_close+0x2b/0xb0 [ 9.536566][ T167] softirqs last disabled at (4449432): [] release_sock+0x21/0x240 [ 9.536570][ T167] Preemption disabled at: [ 9.536571][ T167] [<0000000000000000>] 0x0 [ 9.536577][ T167] CPU: 3 UID: 0 PID: 167 Comm: packetdrill Tainted: G W 7.2.0-virtme #1 PREEMPT(full) [ 9.536580][ T167] Tainted: [W]=WARN [ 9.536581][ T167] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011 [ 9.536582][ T167] Call Trace: [ 9.536584][ T167] [ 9.536585][ T167] dump_stack_lvl+0x6f/0xa0 [ 9.536590][ T167] __might_resched.cold+0x1fe/0x2c1 [ 9.536598][ T167] ? perf_trace_sched_switch+0x7c0/0x7c0 [ 9.536601][ T167] ? __kmalloc_noprof+0xdb/0x760 [ 9.536606][ T167] __kmalloc_noprof+0x443/0x760 [ 9.536609][ T167] ? alloc_buf.isra.0+0x4b/0x260 [ 9.536615][ T167] ? do_raw_spin_unlock+0x59/0x250 [ 9.536617][ T167] alloc_buf.isra.0+0x4b/0x260 [ 9.536620][ T167] put_chars+0x1e1/0x2f0 [ 9.536623][ T167] ? __send_to_port+0x420/0x420 [ 9.536625][ T167] ? rcu_lockdep_current_cpu_online+0x3f/0x1b0 [ 9.536629][ T167] ? validate_chain+0x38b/0xc20 [ 9.536634][ T167] hvc_console_print+0x292/0x780 [ 9.536641][ T167] ? hvc_write+0x3a0/0x3a0 [ 9.536643][ T167] ? rcu_is_watching+0x16/0xd0 [ 9.536645][ T167] ? lock_acquire+0x13c/0x160 [ 9.536649][ T167] console_emit_next_record+0x22f/0x4c0 [ 9.536652][ T167] ? devkmsg_read+0x4b0/0x4b0 [ 9.536654][ T167] ? console_flush_one_record+0x106/0x710 [ 9.536656][ T167] ? rcu_is_watching+0x16/0xd0 [ 9.536658][ T167] ? lock_acquire+0x13c/0x160 [ 9.536662][ T167] console_flush_one_record+0x46f/0x710 [ 9.536665][ T167] ? console_emit_next_record+0x4c0/0x4c0 [ 9.536666][ T167] ? __lock_acquire+0x518/0xc20 [ 9.536672][ T167] console_unlock+0xee/0x1f0 [ 9.536674][ T167] ? console_flush_one_record+0x710/0x710 [ 9.536675][ T167] ? rcu_is_watching+0x16/0xd0 [ 9.536677][ T167] ? lock_acquire+0x60/0x160 [ 9.536680][ T167] ? __down_trylock_console_sem+0x5e/0xa0 [ 9.536682][ T167] ? vprintk_emit+0x320/0x3e0 [ 9.536685][ T167] vprintk_emit+0x37c/0x3e0 [ 9.536688][ T167] ? wake_up_klogd_work_func+0x90/0x90 [ 9.536689][ T167] ? do_raw_spin_unlock+0x59/0x250 [ 9.536692][ T167] ? __lock_acquire+0x518/0xc20 [ 9.536696][ T167] _printk+0xc7/0x100 [ 9.536700][ T167] ? snapshot_read.cold+0x21/0x21 [ 9.536702][ T167] ? do_raw_spin_lock+0x131/0x280 [ 9.536705][ T167] ? __rwlock_init+0x150/0x150 [ 9.536709][ T167] ? do_raw_spin_lock+0x131/0x280 [ 9.536712][ T167] do_exit.cold+0x82/0x9c [ 9.536715][ T167] ? exit_notify+0x890/0x890 [ 9.536716][ T167] ? __lock_release.isra.0+0x69/0x1a0 [ 9.536719][ T167] ? rcu_is_watching+0x16/0xd0 [ 9.536723][ T167] do_group_exit+0xb8/0x370 [ 9.536726][ T167] __x64_sys_exit_group+0x3c/0x50 [ 9.536727][ T167] x64_sys_call+0x1567/0x1570 [ 9.536730][ T167] do_syscall_64+0xff/0x530 [ 9.536734][ T167] ? irq_exit_rcu+0x1a/0x30 [ 9.536736][ T167] entry_SYSCALL_64_after_hwframe+0x4b/0x53 [ 9.536738][ T167] RIP: 0033:0x479678 [ 9.536741][ T167] Code: Unable to access opcode bytes at 0x47964e. [ 9.536742][ T167] RSP: 002b:00007fff78881968 EFLAGS: 00000246 ORIG_RAX: 00000000000000e7 [ 9.536744][ T167] RAX: ffffffffffffffda RBX: 0000000000000001 RCX: 0000000000479678 [ 9.536746][ T167] RDX: 000000000eaef708 RSI: fffffffffffffff0 RDI: 0000000000000000 [ 9.536747][ T167] RBP: 00007fff788819c0 R08: 0000000000000000 R09: 000000000eaf03e0 [ 9.536748][ T167] R10: 0000000000000110 R11: 0000000000000246 R12: 00007fff78881af8 [ 9.536748][ T167] R13: 00007fff78881b80 R14: 0000000000000000 R15: 000000000054d560 [ 9.536755][ T167] [ 10.316138][ T199] packetdrill (199) used greatest stack depth: 23584 bytes left