[ 12.054333][ T90] (udev-worker) (90) used greatest stack depth: 22696 bytes left [ 12.054350][ T90] BUG: sleeping function called from invalid context at ./include/linux/sched/mm.h:322 [ 12.054352][ T90] in_atomic(): 1, irqs_disabled(): 1, non_block: 0, pid: 90, name: (udev-worker) [ 12.054354][ T90] preempt_count: 2, expected: 0 [ 12.054354][ T90] RCU nest depth: 0, expected: 0 [ 12.054355][ T90] locks held by (udev-worker)/90: 5, last CPU#3: [ 12.054357][ T90] #0: ffffffffb14027b8 (low_water_lock){+.+.}-{3:3}, at: do_exit+0x887/0xdc0 [ 12.054369][ T90] #1: ffffffffb1599dc0 (console_lock){+.+.}-{0:0}, at: vprintk_emit+0x320/0x3e0 [ 12.054374][ T90] #2: ffffffffb1599e38 (console_srcu){....}-{0:0}, at: console_flush_one_record+0x106/0x710 [ 12.054378][ T90] #3: ffffffffb1489760 (console_owner){....}-{0:0}, at: console_lock_spinning_enable+0x40/0x60 [ 12.054382][ T90] #4: ffffffffb1489660 (printk_legacy_map-wait-type-override){....}-{3:3}, at: console_emit_next_record+0x202/0x4f0 [ 12.054386][ T90] irq event stamp: 419226 [ 12.054386][ T90] hardirqs last enabled at (419225): [] __down_trylock_console_sem+0x86/0xa0 [ 12.054389][ T90] hardirqs last disabled at (419226): [] console_emit_next_record+0x3f8/0x4f0 [ 12.054391][ T90] softirqs last enabled at (419162): [] handle_softirqs+0x67c/0x900 [ 12.054393][ T90] softirqs last disabled at (418419): [] do_softirq+0xac/0xe0 [ 12.054396][ T90] Preemption disabled at: [ 12.054396][ T90] [<0000000000000000>] 0x0 [ 12.054403][ T90] CPU: 3 UID: 0 PID: 90 Comm: (udev-worker) Tainted: G W 7.2.0-virtme #1 PREEMPT(full) [ 12.054406][ T90] Tainted: [W]=WARN [ 12.054407][ T90] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011 [ 12.054409][ T90] Call Trace: [ 12.054411][ T90] [ 12.054412][ T90] dump_stack_lvl+0x6f/0xa0 [ 12.054418][ T90] __might_resched.cold+0x1fe/0x2c1 [ 12.054423][ T90] ? perf_trace_sched_switch+0x7c0/0x7c0 [ 12.054427][ T90] ? __kmalloc_noprof+0xdb/0x760 [ 12.054432][ T90] __kmalloc_noprof+0x443/0x760 [ 12.054434][ T90] ? alloc_buf.isra.0+0x4b/0x260 [ 12.054440][ T90] ? do_raw_spin_unlock+0x59/0x250 [ 12.054443][ T90] alloc_buf.isra.0+0x4b/0x260 [ 12.054446][ T90] put_chars+0x1e1/0x2f0 [ 12.054450][ T90] ? __send_to_port+0x420/0x420 [ 12.054452][ T90] ? printk_get_next_message+0x2fe/0x7d0 [ 12.054455][ T90] ? rcu_read_lock_any_held+0x3c/0x90 [ 12.054458][ T90] ? validate_chain+0x38b/0xc20 [ 12.054462][ T90] hvc_console_print+0x292/0x780 [ 12.054465][ T90] ? __lock_acquire+0x518/0xc20 [ 12.054467][ T90] ? __lock_acquire+0x518/0xc20 [ 12.054471][ T90] ? hvc_write+0x3a0/0x3a0 [ 12.054475][ T90] ? rcu_is_watching+0x16/0xd0 [ 12.054478][ T90] ? lock_acquire+0x13c/0x160 [ 12.054482][ T90] console_emit_next_record+0x252/0x4f0 [ 12.054486][ T90] ? devkmsg_read+0x4e0/0x4e0 [ 12.054490][ T90] ? rcu_is_watching+0x16/0xd0 [ 12.054492][ T90] ? lock_acquire+0x13c/0x160 [ 12.054496][ T90] console_flush_one_record+0x46f/0x710 [ 12.054500][ T90] ? console_emit_next_record+0x4f0/0x4f0 [ 12.054501][ T90] ? __lock_acquire+0x518/0xc20 [ 12.054506][ T90] console_unlock+0xee/0x1f0 [ 12.054509][ T90] ? console_flush_one_record+0x710/0x710 [ 12.054511][ T90] ? rcu_is_watching+0x16/0xd0 [ 12.054513][ T90] ? lock_acquire+0xa0/0x160 [ 12.054516][ T90] ? __down_trylock_console_sem+0x5e/0xa0 [ 12.054518][ T90] ? vprintk_emit+0x320/0x3e0 [ 12.054521][ T90] vprintk_emit+0x37c/0x3e0 [ 12.054525][ T90] ? wake_up_klogd_work_func+0x90/0x90 [ 12.054528][ T90] ? __lock_acquire+0x518/0xc20 [ 12.054531][ T90] _printk+0xc7/0x100 [ 12.054535][ T90] ? snapshot_read.cold+0x21/0x21 [ 12.054537][ T90] ? do_raw_spin_lock+0x131/0x280 [ 12.054540][ T90] ? __rwlock_init+0x150/0x150 [ 12.054543][ T90] ? do_raw_spin_lock+0x131/0x280 [ 12.054546][ T90] do_exit.cold+0x82/0x9c [ 12.054549][ T90] ? exit_notify+0x890/0x890 [ 12.054551][ T90] ? __lock_release.isra.0+0x69/0x1a0 [ 12.054553][ T90] ? rcu_is_watching+0x16/0xd0 [ 12.054557][ T90] do_group_exit+0xb8/0x370 [ 12.054560][ T90] __x64_sys_exit_group+0x3c/0x50 [ 12.054561][ T90] x64_sys_call+0x1567/0x1570 [ 12.054563][ T90] do_syscall_64+0xff/0x530 [ 12.054567][ T90] ? exc_page_fault+0xee/0x100 [ 12.054570][ T90] entry_SYSCALL_64_after_hwframe+0x4b/0x53 [ 12.054572][ T90] RIP: 0033:0x7f58fc5d61b8 [ 12.054575][ T90] Code: Unable to access opcode bytes at 0x7f58fc5d618e. [ 12.054576][ T90] RSP: 002b:00007ffcf9fa6d18 EFLAGS: 00000256 ORIG_RAX: 00000000000000e7 [ 12.054578][ T90] RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 00007f58fc5d61b8 [ 12.054580][ T90] RDX: 0000000000000000 RSI: fffffffffffffe90 RDI: 0000000000000000 [ 12.054581][ T90] RBP: 00007ffcf9fa6ea0 R08: 0000558cf6e0fcf8 R09: 0000000000000000 [ 12.054581][ T90] R10: 0000000000000000 R11: 0000000000000256 R12: 0000000000000000 [ 12.054582][ T90] R13: 00007f58fbe34050 R14: 00007f58fcb07d9e R15: 0000558cf6ca72b0 [ 12.054589][ T90]