[ 12.380191][ T83] (udev-worker) (83) used greatest stack depth: 22696 bytes left [ 12.380268][ T83] BUG: sleeping function called from invalid context at ./include/linux/sched/mm.h:322 [ 12.380270][ T83] in_atomic(): 1, irqs_disabled(): 1, non_block: 0, pid: 83, name: (udev-worker) [ 12.380272][ T83] preempt_count: 2, expected: 0 [ 12.380273][ T83] RCU nest depth: 0, expected: 0 [ 12.380274][ T83] locks held by (udev-worker)/83: 5, last CPU#3: [ 12.380276][ T83] #0: ffffffffae2027b8 (low_water_lock){+.+.}-{3:3}, at: do_exit+0x887/0xdc0 [ 12.380287][ T83] #1: ffffffffae399dc0 (console_lock){+.+.}-{0:0}, at: vprintk_emit+0x320/0x3e0 [ 12.380293][ T83] #2: ffffffffae399e38 (console_srcu){....}-{0:0}, at: console_flush_one_record+0x106/0x710 [ 12.380297][ T83] #3: ffffffffae289760 (console_owner){....}-{0:0}, at: console_lock_spinning_enable+0x40/0x60 [ 12.380300][ T83] #4: ffffffffae289660 (printk_legacy_map-wait-type-override){....}-{3:3}, at: console_emit_next_record+0x202/0x4f0 [ 12.380305][ T83] irq event stamp: 355212 [ 12.380305][ T83] hardirqs last enabled at (355211): [] __down_trylock_console_sem+0x86/0xa0 [ 12.380308][ T83] hardirqs last disabled at (355212): [] console_emit_next_record+0x3f8/0x4f0 [ 12.380310][ T83] softirqs last enabled at (355176): [] handle_softirqs+0x67c/0x900 [ 12.380312][ T83] softirqs last disabled at (353161): [] __irq_exit_rcu+0x145/0x1c0 [ 12.380315][ T83] Preemption disabled at: [ 12.380315][ T83] [<0000000000000000>] 0x0 [ 12.380322][ T83] CPU: 3 UID: 0 PID: 83 Comm: (udev-worker) Tainted: G W 7.2.0-virtme #1 PREEMPT(full) [ 12.380326][ T83] Tainted: [W]=WARN [ 12.380327][ T83] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011 [ 12.380328][ T83] Call Trace: [ 12.380330][ T83] [ 12.380332][ T83] dump_stack_lvl+0x6f/0xa0 [ 12.380338][ T83] __might_resched.cold+0x1fe/0x2c1 [ 12.380345][ T83] ? perf_trace_sched_switch+0x7c0/0x7c0 [ 12.380349][ T83] ? __kmalloc_noprof+0xdb/0x760 [ 12.380354][ T83] __kmalloc_noprof+0x443/0x760 [ 12.380357][ T83] ? alloc_buf.isra.0+0x4b/0x260 [ 12.380363][ T83] ? do_raw_spin_unlock+0x59/0x250 [ 12.380366][ T83] alloc_buf.isra.0+0x4b/0x260 [ 12.380369][ T83] put_chars+0x1e1/0x2f0 [ 12.380373][ T83] ? __send_to_port+0x420/0x420 [ 12.380375][ T83] ? printk_get_next_message+0x2fe/0x7d0 [ 12.380378][ T83] ? rcu_read_lock_any_held+0x3c/0x90 [ 12.380381][ T83] ? validate_chain+0x38b/0xc20 [ 12.380385][ T83] hvc_console_print+0x292/0x780 [ 12.380389][ T83] ? __lock_acquire+0x518/0xc20 [ 12.380390][ T83] ? __lock_acquire+0x518/0xc20 [ 12.380394][ T83] ? hvc_write+0x3a0/0x3a0 [ 12.380398][ T83] ? rcu_is_watching+0x16/0xd0 [ 12.380401][ T83] ? lock_acquire+0x13c/0x160 [ 12.380405][ T83] console_emit_next_record+0x252/0x4f0 [ 12.380408][ T83] ? devkmsg_read+0x4e0/0x4e0 [ 12.380413][ T83] ? rcu_is_watching+0x16/0xd0 [ 12.380415][ T83] ? lock_acquire+0x13c/0x160 [ 12.380419][ T83] console_flush_one_record+0x46f/0x710 [ 12.380423][ T83] ? console_emit_next_record+0x4f0/0x4f0 [ 12.380425][ T83] ? __lock_acquire+0x518/0xc20 [ 12.380429][ T83] console_unlock+0xee/0x1f0 [ 12.380432][ T83] ? console_flush_one_record+0x710/0x710 [ 12.380434][ T83] ? rcu_is_watching+0x16/0xd0 [ 12.380436][ T83] ? lock_acquire+0xa0/0x160 [ 12.380439][ T83] ? __down_trylock_console_sem+0x5e/0xa0 [ 12.380441][ T83] ? vprintk_emit+0x320/0x3e0 [ 12.380444][ T83] vprintk_emit+0x37c/0x3e0 [ 12.380448][ T83] ? wake_up_klogd_work_func+0x90/0x90 [ 12.380452][ T83] ? __lock_acquire+0x518/0xc20 [ 12.380455][ T83] _printk+0xc7/0x100 [ 12.380459][ T83] ? snapshot_read.cold+0x21/0x21 [ 12.380461][ T83] ? do_raw_spin_lock+0x131/0x280 [ 12.380464][ T83] ? __rwlock_init+0x150/0x150 [ 12.380467][ T83] ? do_raw_spin_lock+0x131/0x280 [ 12.380470][ T83] do_exit.cold+0x82/0x9c [ 12.380473][ T83] ? exit_notify+0x890/0x890 [ 12.380475][ T83] ? __lock_release.isra.0+0x69/0x1a0 [ 12.380477][ T83] ? rcu_is_watching+0x16/0xd0 [ 12.380481][ T83] do_group_exit+0xb8/0x370 [ 12.380486][ T83] __x64_sys_exit_group+0x3c/0x50 [ 12.380488][ T83] x64_sys_call+0x1567/0x1570 [ 12.380490][ T83] do_syscall_64+0xff/0x530 [ 12.380494][ T83] ? irq_exit_rcu+0x1a/0x30 [ 12.380497][ T83] entry_SYSCALL_64_after_hwframe+0x4b/0x53 [ 12.380499][ T83] RIP: 0033:0x7f0ebf90f1b8 [ 12.380501][ T83] Code: Unable to access opcode bytes at 0x7f0ebf90f18e. [ 12.380502][ T83] RSP: 002b:00007ffc1f3e8b28 EFLAGS: 00000256 ORIG_RAX: 00000000000000e7 [ 12.380505][ T83] RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 00007f0ebf90f1b8 [ 12.380506][ T83] RDX: 0000000000000000 RSI: fffffffffffffe90 RDI: 0000000000000000 [ 12.380507][ T83] RBP: 00007ffc1f3e8cb0 R08: 00005577e9cf2878 R09: 0000000000000000 [ 12.380508][ T83] R10: 0000000000000000 R11: 0000000000000256 R12: 0000000000000000 [ 12.380508][ T83] R13: 00007f0ebf16d050 R14: 00007f0ebfe40d9e R15: 00005577e9d014e0 [ 12.380515][ T83]