[ 13.889694][ T86] (udev-worker) (86) used greatest stack depth: 22696 bytes left [ 13.889719][ T86] BUG: sleeping function called from invalid context at ./include/linux/sched/mm.h:322 [ 13.889722][ T86] in_atomic(): 1, irqs_disabled(): 1, non_block: 0, pid: 86, name: (udev-worker) [ 13.889724][ T86] preempt_count: 2, expected: 0 [ 13.889724][ T86] RCU nest depth: 0, expected: 0 [ 13.889725][ T86] locks held by (udev-worker)/86: 5, last CPU#2: [ 13.889728][ T86] #0: ffffffff986027b8 (low_water_lock){+.+.}-{3:3}, at: do_exit+0x887/0xdc0 [ 13.889740][ T86] #1: ffffffff98769cc0 (console_lock){+.+.}-{0:0}, at: vprintk_emit+0x320/0x3e0 [ 13.889746][ T86] #2: ffffffff98769d38 (console_srcu){....}-{0:0}, at: console_flush_one_record+0x106/0x710 [ 13.889749][ T86] #3: ffffffff98689660 (console_owner){....}-{0:0}, at: console_lock_spinning_enable+0x40/0x60 [ 13.889753][ T86] #4: ffffffff98689560 (printk_legacy_map-wait-type-override){....}-{3:3}, at: console_emit_next_record+0x1df/0x4c0 [ 13.889757][ T86] irq event stamp: 422078 [ 13.889758][ T86] hardirqs last enabled at (422077): [] __down_trylock_console_sem+0x86/0xa0 [ 13.889760][ T86] hardirqs last disabled at (422078): [] console_emit_next_record+0x3d4/0x4c0 [ 13.889762][ T86] softirqs last enabled at (422014): [] netlink_release+0x17b/0xcf0 [ 13.889766][ T86] softirqs last disabled at (422012): [] netlink_release+0xd2/0xcf0 [ 13.889768][ T86] Preemption disabled at: [ 13.889769][ T86] [<0000000000000000>] 0x0 [ 13.889776][ T86] CPU: 2 UID: 0 PID: 86 Comm: (udev-worker) Tainted: G W 7.2.0-virtme #1 PREEMPT(full) [ 13.889780][ T86] Tainted: [W]=WARN [ 13.889781][ T86] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011 [ 13.889782][ T86] Call Trace: [ 13.889784][ T86] [ 13.889786][ T86] dump_stack_lvl+0x6f/0xa0 [ 13.889792][ T86] __might_resched.cold+0x1fe/0x2c1 [ 13.889799][ T86] ? perf_trace_sched_switch+0x7c0/0x7c0 [ 13.889803][ T86] ? __kmalloc_noprof+0xdb/0x760 [ 13.889807][ T86] __kmalloc_noprof+0x443/0x760 [ 13.889809][ T86] ? alloc_buf.isra.0+0x4b/0x260 [ 13.889816][ T86] ? do_raw_spin_unlock+0x59/0x250 [ 13.889818][ T86] alloc_buf.isra.0+0x4b/0x260 [ 13.889822][ T86] put_chars+0x1e1/0x2f0 [ 13.889825][ T86] ? __send_to_port+0x420/0x420 [ 13.889827][ T86] ? rcu_lockdep_current_cpu_online+0x3f/0x1b0 [ 13.889832][ T86] ? validate_chain+0x38b/0xc20 [ 13.889836][ T86] hvc_console_print+0x292/0x780 [ 13.889844][ T86] ? hvc_write+0x3a0/0x3a0 [ 13.889846][ T86] ? rcu_is_watching+0x16/0xd0 [ 13.889849][ T86] ? lock_acquire+0x13c/0x160 [ 13.889852][ T86] console_emit_next_record+0x22f/0x4c0 [ 13.889856][ T86] ? devkmsg_read+0x4b0/0x4b0 [ 13.889857][ T86] ? console_flush_one_record+0x106/0x710 [ 13.889860][ T86] ? rcu_is_watching+0x16/0xd0 [ 13.889863][ T86] ? lock_acquire+0x13c/0x160 [ 13.889866][ T86] console_flush_one_record+0x46f/0x710 [ 13.889870][ T86] ? console_emit_next_record+0x4c0/0x4c0 [ 13.889872][ T86] ? __lock_acquire+0x518/0xc20 [ 13.889877][ T86] console_unlock+0xee/0x1f0 [ 13.889879][ T86] ? console_flush_one_record+0x710/0x710 [ 13.889881][ T86] ? rcu_is_watching+0x16/0xd0 [ 13.889883][ T86] ? lock_acquire+0x60/0x160 [ 13.889886][ T86] ? __down_trylock_console_sem+0x5e/0xa0 [ 13.889888][ T86] ? vprintk_emit+0x320/0x3e0 [ 13.889891][ T86] vprintk_emit+0x37c/0x3e0 [ 13.889895][ T86] ? wake_up_klogd_work_func+0x90/0x90 [ 13.889898][ T86] ? __lock_acquire+0x518/0xc20 [ 13.889901][ T86] _printk+0xc7/0x100 [ 13.889905][ T86] ? snapshot_read.cold+0x21/0x21 [ 13.889908][ T86] ? do_raw_spin_lock+0x131/0x280 [ 13.889910][ T86] ? __rwlock_init+0x150/0x150 [ 13.889914][ T86] ? do_raw_spin_lock+0x131/0x280 [ 13.889916][ T86] do_exit.cold+0x82/0x9c [ 13.889920][ T86] ? exit_notify+0x890/0x890 [ 13.889922][ T86] ? __lock_release.isra.0+0x69/0x1a0 [ 13.889924][ T86] ? rcu_is_watching+0x16/0xd0 [ 13.889928][ T86] do_group_exit+0xb8/0x370 [ 13.889931][ T86] __x64_sys_exit_group+0x3c/0x50 [ 13.889934][ T86] x64_sys_call+0x1567/0x1570 [ 13.889936][ T86] do_syscall_64+0xff/0x530 [ 13.889939][ T86] ? exc_page_fault+0xee/0x100 [ 13.889942][ T86] entry_SYSCALL_64_after_hwframe+0x4b/0x53 [ 13.889944][ T86] RIP: 0033:0x7f6422cd01b8 [ 13.889946][ T86] Code: Unable to access opcode bytes at 0x7f6422cd018e. [ 13.889947][ T86] RSP: 002b:00007ffc5e1d2d78 EFLAGS: 00000256 ORIG_RAX: 00000000000000e7 [ 13.889950][ T86] RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 00007f6422cd01b8 [ 13.889952][ T86] RDX: 0000000000000000 RSI: fffffffffffffe90 RDI: 0000000000000000 [ 13.889952][ T86] RBP: 00007ffc5e1d2f00 R08: 00005645d2b57c08 R09: 0000000000000000 [ 13.889953][ T86] R10: 0000000000000000 R11: 0000000000000256 R12: 0000000000000000 [ 13.889954][ T86] R13: 00007f642252e050 R14: 00007f6423201d9e R15: 00005645d29b7640 [ 13.889961][ T86]