[ 16.865792][ T90] (udev-worker) (90) used greatest stack depth: 22696 bytes left [ 16.865815][ T90] BUG: sleeping function called from invalid context at ./include/linux/sched/mm.h:322 [ 16.865817][ T90] in_atomic(): 1, irqs_disabled(): 1, non_block: 0, pid: 90, name: (udev-worker) [ 16.865819][ T90] preempt_count: 2, expected: 0 [ 16.865820][ T90] RCU nest depth: 0, expected: 0 [ 16.865821][ T90] locks held by (udev-worker)/90: 5, last CPU#2: [ 16.865824][ T90] #0: ffffffff932027b8 (low_water_lock){+.+.}-{3:3}, at: do_exit+0x887/0xdc0 [ 16.865842][ T90] #1: ffffffff93399cc0 (console_lock){+.+.}-{0:0}, at: vprintk_emit+0x320/0x3e0 [ 16.865849][ T90] #2: ffffffff93399d38 (console_srcu){....}-{0:0}, at: console_flush_one_record+0x106/0x710 [ 16.865854][ T90] #3: ffffffff93289660 (console_owner){....}-{0:0}, at: console_lock_spinning_enable+0x40/0x60 [ 16.865860][ T90] #4: ffffffff93289560 (printk_legacy_map-wait-type-override){....}-{3:3}, at: console_emit_next_record+0x202/0x4f0 [ 16.865866][ T90] irq event stamp: 892712 [ 16.865867][ T90] hardirqs last enabled at (892711): [] __down_trylock_console_sem+0x86/0xa0 [ 16.865869][ T90] hardirqs last disabled at (892712): [] console_emit_next_record+0x3f8/0x4f0 [ 16.865871][ T90] softirqs last enabled at (892706): [] handle_softirqs+0x67c/0x900 [ 16.865874][ T90] softirqs last disabled at (892701): [] __irq_exit_rcu+0x145/0x1c0 [ 16.865878][ T90] Preemption disabled at: [ 16.865878][ T90] [<0000000000000000>] 0x0 [ 16.865886][ T90] CPU: 2 UID: 0 PID: 90 Comm: (udev-worker) Tainted: G W 7.2.0-virtme #1 PREEMPT(full) [ 16.865890][ T90] Tainted: [W]=WARN [ 16.865891][ T90] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011 [ 16.865894][ T90] Call Trace: [ 16.865896][ T90] [ 16.865898][ T90] dump_stack_lvl+0x6f/0xa0 [ 16.865904][ T90] __might_resched.cold+0x1fe/0x2c1 [ 16.865910][ T90] ? perf_trace_sched_switch+0x7c0/0x7c0 [ 16.865914][ T90] ? __kmalloc_noprof+0xdb/0x760 [ 16.865920][ T90] __kmalloc_noprof+0x443/0x760 [ 16.865922][ T90] ? alloc_buf.isra.0+0x4b/0x260 [ 16.865929][ T90] ? do_raw_spin_unlock+0x59/0x250 [ 16.865931][ T90] alloc_buf.isra.0+0x4b/0x260 [ 16.865935][ T90] put_chars+0x1e1/0x2f0 [ 16.865938][ T90] ? __send_to_port+0x420/0x420 [ 16.865940][ T90] ? printk_get_next_message+0x2fe/0x7d0 [ 16.865944][ T90] ? rcu_read_lock_any_held+0x3c/0x90 [ 16.865947][ T90] ? validate_chain+0x38b/0xc20 [ 16.865952][ T90] hvc_console_print+0x292/0x780 [ 16.865955][ T90] ? __lock_acquire+0x518/0xc20 [ 16.865957][ T90] ? __lock_acquire+0x518/0xc20 [ 16.865962][ T90] ? hvc_write+0x3a0/0x3a0 [ 16.865965][ T90] ? rcu_is_watching+0x16/0xd0 [ 16.865969][ T90] ? lock_acquire+0x13c/0x160 [ 16.865973][ T90] console_emit_next_record+0x252/0x4f0 [ 16.865977][ T90] ? devkmsg_read+0x4e0/0x4e0 [ 16.865982][ T90] ? rcu_is_watching+0x16/0xd0 [ 16.865985][ T90] ? lock_acquire+0x13c/0x160 [ 16.865989][ T90] console_flush_one_record+0x46f/0x710 [ 16.865993][ T90] ? console_emit_next_record+0x4f0/0x4f0 [ 16.865995][ T90] ? __lock_acquire+0x518/0xc20 [ 16.866000][ T90] console_unlock+0xee/0x1f0 [ 16.866003][ T90] ? console_flush_one_record+0x710/0x710 [ 16.866005][ T90] ? rcu_is_watching+0x16/0xd0 [ 16.866007][ T90] ? lock_acquire+0x60/0x160 [ 16.866011][ T90] ? __down_trylock_console_sem+0x5e/0xa0 [ 16.866013][ T90] ? vprintk_emit+0x320/0x3e0 [ 16.866017][ T90] vprintk_emit+0x37c/0x3e0 [ 16.866021][ T90] ? wake_up_klogd_work_func+0x90/0x90 [ 16.866025][ T90] ? __lock_acquire+0x518/0xc20 [ 16.866029][ T90] _printk+0xc7/0x100 [ 16.866034][ T90] ? snapshot_read.cold+0x21/0x21 [ 16.866037][ T90] ? do_raw_spin_lock+0x131/0x280 [ 16.866040][ T90] ? __rwlock_init+0x150/0x150 [ 16.866044][ T90] ? do_raw_spin_lock+0x131/0x280 [ 16.866047][ T90] do_exit.cold+0x82/0x9c [ 16.866051][ T90] ? exit_notify+0x890/0x890 [ 16.866053][ T90] ? __lock_release.isra.0+0x69/0x1a0 [ 16.866056][ T90] ? rcu_is_watching+0x16/0xd0 [ 16.866061][ T90] do_group_exit+0xb8/0x370 [ 16.866064][ T90] __x64_sys_exit_group+0x3c/0x50 [ 16.866067][ T90] x64_sys_call+0x1567/0x1570 [ 16.866069][ T90] do_syscall_64+0xff/0x530 [ 16.866073][ T90] ? irq_exit_rcu+0x1a/0x30 [ 16.866076][ T90] entry_SYSCALL_64_after_hwframe+0x4b/0x53 [ 16.866078][ T90] RIP: 0033:0x7f9e3011a1b8 [ 16.866081][ T90] Code: Unable to access opcode bytes at 0x7f9e3011a18e. [ 16.866082][ T90] RSP: 002b:00007ffc181d4978 EFLAGS: 00000256 ORIG_RAX: 00000000000000e7 [ 16.866085][ T90] RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 00007f9e3011a1b8 [ 16.866086][ T90] RDX: 0000000000000000 RSI: fffffffffffffe90 RDI: 0000000000000000 [ 16.866087][ T90] RBP: 00007ffc181d4b00 R08: 000055b9fe783d68 R09: 0000000000000000 [ 16.866088][ T90] R10: 0000000000000000 R11: 0000000000000256 R12: 0000000000000000 [ 16.866089][ T90] R13: 00007f9e2f978050 R14: 00007f9e3064bd9e R15: 000055b9fe634020 [ 16.866097][ T90]