[ 12.892780][ T88] (udev-worker) (88) used greatest stack depth: 22696 bytes left [ 12.892798][ T88] BUG: sleeping function called from invalid context at ./include/linux/sched/mm.h:322 [ 12.892801][ T88] in_atomic(): 1, irqs_disabled(): 1, non_block: 0, pid: 88, name: (udev-worker) [ 12.892802][ T88] preempt_count: 2, expected: 0 [ 12.892803][ T88] RCU nest depth: 0, expected: 0 [ 12.892804][ T88] locks held by (udev-worker)/88: 5, last CPU#1: [ 12.892806][ T88] #0: ffffffff946027b8 (low_water_lock){+.+.}-{3:3}, at: do_exit+0x887/0xdc0 [ 12.892818][ T88] #1: ffffffff94799dc0 (console_lock){+.+.}-{0:0}, at: vprintk_emit+0x320/0x3e0 [ 12.892825][ T88] #2: ffffffff94799e38 (console_srcu){....}-{0:0}, at: console_flush_one_record+0x106/0x710 [ 12.892829][ T88] #3: ffffffff94689760 (console_owner){....}-{0:0}, at: console_lock_spinning_enable+0x40/0x60 [ 12.892833][ T88] #4: ffffffff94689660 (printk_legacy_map-wait-type-override){....}-{3:3}, at: console_emit_next_record+0x202/0x4f0 [ 12.892837][ T88] irq event stamp: 370820 [ 12.892838][ T88] hardirqs last enabled at (370819): [] __down_trylock_console_sem+0x86/0xa0 [ 12.892840][ T88] hardirqs last disabled at (370820): [] console_emit_next_record+0x3f8/0x4f0 [ 12.892843][ T88] softirqs last enabled at (370804): [] handle_softirqs+0x67c/0x900 [ 12.892845][ T88] softirqs last disabled at (370799): [] __irq_exit_rcu+0x145/0x1c0 [ 12.892847][ T88] Preemption disabled at: [ 12.892848][ T88] [<0000000000000000>] 0x0 [ 12.892855][ T88] CPU: 1 UID: 0 PID: 88 Comm: (udev-worker) Tainted: G W 7.2.0-virtme #1 PREEMPT(full) [ 12.892859][ T88] Tainted: [W]=WARN [ 12.892860][ T88] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011 [ 12.892862][ T88] Call Trace: [ 12.892863][ T88] [ 12.892865][ T88] dump_stack_lvl+0x6f/0xa0 [ 12.892871][ T88] __might_resched.cold+0x1fe/0x2c1 [ 12.892876][ T88] ? perf_trace_sched_switch+0x7c0/0x7c0 [ 12.892880][ T88] ? __kmalloc_noprof+0xdb/0x760 [ 12.892886][ T88] __kmalloc_noprof+0x443/0x760 [ 12.892888][ T88] ? alloc_buf.isra.0+0x4b/0x260 [ 12.892895][ T88] ? do_raw_spin_unlock+0x59/0x250 [ 12.892898][ T88] alloc_buf.isra.0+0x4b/0x260 [ 12.892902][ T88] put_chars+0x1e1/0x2f0 [ 12.892906][ T88] ? __send_to_port+0x420/0x420 [ 12.892908][ T88] ? printk_get_next_message+0x2fe/0x7d0 [ 12.892912][ T88] ? rcu_read_lock_any_held+0x3c/0x90 [ 12.892915][ T88] ? validate_chain+0x38b/0xc20 [ 12.892920][ T88] hvc_console_print+0x292/0x780 [ 12.892923][ T88] ? __lock_acquire+0x518/0xc20 [ 12.892925][ T88] ? __lock_acquire+0x518/0xc20 [ 12.892930][ T88] ? hvc_write+0x3a0/0x3a0 [ 12.892933][ T88] ? rcu_is_watching+0x16/0xd0 [ 12.892937][ T88] ? lock_acquire+0x13c/0x160 [ 12.892941][ T88] console_emit_next_record+0x252/0x4f0 [ 12.892947][ T88] ? devkmsg_read+0x4e0/0x4e0 [ 12.892954][ T88] ? rcu_is_watching+0x16/0xd0 [ 12.892958][ T88] ? lock_acquire+0x13c/0x160 [ 12.892964][ T88] console_flush_one_record+0x46f/0x710 [ 12.892969][ T88] ? console_emit_next_record+0x4f0/0x4f0 [ 12.892971][ T88] ? __lock_acquire+0x518/0xc20 [ 12.892976][ T88] console_unlock+0xee/0x1f0 [ 12.892979][ T88] ? console_flush_one_record+0x710/0x710 [ 12.892981][ T88] ? rcu_is_watching+0x16/0xd0 [ 12.892984][ T88] ? lock_acquire+0xa0/0x160 [ 12.892987][ T88] ? __down_trylock_console_sem+0x5e/0xa0 [ 12.892989][ T88] ? vprintk_emit+0x320/0x3e0 [ 12.892993][ T88] vprintk_emit+0x37c/0x3e0 [ 12.892997][ T88] ? wake_up_klogd_work_func+0x90/0x90 [ 12.893001][ T88] ? __lock_acquire+0x518/0xc20 [ 12.893005][ T88] _printk+0xc7/0x100 [ 12.893008][ T88] ? snapshot_read.cold+0x21/0x21 [ 12.893011][ T88] ? do_raw_spin_lock+0x131/0x280 [ 12.893014][ T88] ? __rwlock_init+0x150/0x150 [ 12.893018][ T88] ? do_raw_spin_lock+0x131/0x280 [ 12.893021][ T88] do_exit.cold+0x82/0x9c [ 12.893025][ T88] ? exit_notify+0x890/0x890 [ 12.893026][ T88] ? __lock_release.isra.0+0x69/0x1a0 [ 12.893029][ T88] ? rcu_is_watching+0x16/0xd0 [ 12.893034][ T88] do_group_exit+0xb8/0x370 [ 12.893037][ T88] __x64_sys_exit_group+0x3c/0x50 [ 12.893039][ T88] x64_sys_call+0x1567/0x1570 [ 12.893041][ T88] do_syscall_64+0xff/0x530 [ 12.893044][ T88] ? exc_page_fault+0xee/0x100 [ 12.893048][ T88] entry_SYSCALL_64_after_hwframe+0x4b/0x53 [ 12.893050][ T88] RIP: 0033:0x7fee1e3861b8 [ 12.893053][ T88] Code: Unable to access opcode bytes at 0x7fee1e38618e. [ 12.893054][ T88] RSP: 002b:00007ffd39e2b3a8 EFLAGS: 00000256 ORIG_RAX: 00000000000000e7 [ 12.893057][ T88] RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 00007fee1e3861b8 [ 12.893059][ T88] RDX: 0000000000000000 RSI: fffffffffffffe90 RDI: 0000000000000000 [ 12.893060][ T88] RBP: 00007ffd39e2b530 R08: 000055b4a31a45f8 R09: 0000000000000000 [ 12.893060][ T88] R10: 0000000000000000 R11: 0000000000000256 R12: 0000000000000000 [ 12.893061][ T88] R13: 00007fee1dbe4050 R14: 00007fee1e8b7d9e R15: 000055b4a319daf0 [ 12.893069][ T88]