[ 13.167487][ T83] (udev-worker) (83) used greatest stack depth: 22696 bytes left [ 13.167505][ T83] BUG: sleeping function called from invalid context at ./include/linux/sched/mm.h:322 [ 13.167507][ T83] in_atomic(): 1, irqs_disabled(): 1, non_block: 0, pid: 83, name: (udev-worker) [ 13.167509][ T83] preempt_count: 2, expected: 0 [ 13.167510][ T83] RCU nest depth: 0, expected: 0 [ 13.167511][ T83] locks held by (udev-worker)/83: 5, last CPU#2: [ 13.167513][ T83] #0: ffffffff9d8027b8 (low_water_lock){+.+.}-{3:3}, at: do_exit+0x887/0xdc0 [ 13.167525][ T83] #1: ffffffff9d999dc0 (console_lock){+.+.}-{0:0}, at: vprintk_emit+0x320/0x3e0 [ 13.167530][ T83] #2: ffffffff9d999e38 (console_srcu){....}-{0:0}, at: console_flush_one_record+0x106/0x710 [ 13.167535][ T83] #3: ffffffff9d889760 (console_owner){....}-{0:0}, at: console_lock_spinning_enable+0x40/0x60 [ 13.167539][ T83] #4: ffffffff9d889660 (printk_legacy_map-wait-type-override){....}-{3:3}, at: console_emit_next_record+0x202/0x4f0 [ 13.167543][ T83] irq event stamp: 402562 [ 13.167544][ T83] hardirqs last enabled at (402561): [] __down_trylock_console_sem+0x86/0xa0 [ 13.167547][ T83] hardirqs last disabled at (402562): [] console_emit_next_record+0x3f8/0x4f0 [ 13.167549][ T83] softirqs last enabled at (402496): [] netlink_release+0x17b/0xcf0 [ 13.167553][ T83] softirqs last disabled at (402494): [] netlink_release+0xd2/0xcf0 [ 13.167556][ T83] Preemption disabled at: [ 13.167556][ T83] [<0000000000000000>] 0x0 [ 13.167564][ T83] CPU: 2 UID: 0 PID: 83 Comm: (udev-worker) Tainted: G W 7.2.0-virtme #1 PREEMPT(full) [ 13.167567][ T83] Tainted: [W]=WARN [ 13.167568][ T83] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011 [ 13.167570][ T83] Call Trace: [ 13.167571][ T83] [ 13.167573][ T83] dump_stack_lvl+0x6f/0xa0 [ 13.167579][ T83] __might_resched.cold+0x1fe/0x2c1 [ 13.167584][ T83] ? perf_trace_sched_switch+0x7c0/0x7c0 [ 13.167588][ T83] ? __kmalloc_noprof+0xdb/0x760 [ 13.167596][ T83] __kmalloc_noprof+0x443/0x760 [ 13.167599][ T83] ? alloc_buf.isra.0+0x4b/0x260 [ 13.167605][ T83] ? do_raw_spin_unlock+0x59/0x250 [ 13.167608][ T83] alloc_buf.isra.0+0x4b/0x260 [ 13.167612][ T83] put_chars+0x1e1/0x2f0 [ 13.167616][ T83] ? __send_to_port+0x420/0x420 [ 13.167618][ T83] ? printk_get_next_message+0x2fe/0x7d0 [ 13.167622][ T83] ? rcu_read_lock_any_held+0x3c/0x90 [ 13.167625][ T83] ? validate_chain+0x38b/0xc20 [ 13.167629][ T83] hvc_console_print+0x292/0x780 [ 13.167633][ T83] ? __lock_acquire+0x518/0xc20 [ 13.167634][ T83] ? __lock_acquire+0x518/0xc20 [ 13.167639][ T83] ? hvc_write+0x3a0/0x3a0 [ 13.167643][ T83] ? rcu_is_watching+0x16/0xd0 [ 13.167646][ T83] ? lock_acquire+0x13c/0x160 [ 13.167651][ T83] console_emit_next_record+0x252/0x4f0 [ 13.167655][ T83] ? devkmsg_read+0x4e0/0x4e0 [ 13.167660][ T83] ? rcu_is_watching+0x16/0xd0 [ 13.167662][ T83] ? lock_acquire+0x13c/0x160 [ 13.167666][ T83] console_flush_one_record+0x46f/0x710 [ 13.167672][ T83] ? console_emit_next_record+0x4f0/0x4f0 [ 13.167674][ T83] ? __lock_acquire+0x518/0xc20 [ 13.167682][ T83] console_unlock+0xee/0x1f0 [ 13.167685][ T83] ? console_flush_one_record+0x710/0x710 [ 13.167687][ T83] ? rcu_is_watching+0x16/0xd0 [ 13.167689][ T83] ? lock_acquire+0xa0/0x160 [ 13.167693][ T83] ? __down_trylock_console_sem+0x5e/0xa0 [ 13.167695][ T83] ? vprintk_emit+0x320/0x3e0 [ 13.167698][ T83] vprintk_emit+0x37c/0x3e0 [ 13.167703][ T83] ? wake_up_klogd_work_func+0x90/0x90 [ 13.167707][ T83] ? __lock_acquire+0x518/0xc20 [ 13.167711][ T83] _printk+0xc7/0x100 [ 13.167714][ T83] ? snapshot_read.cold+0x21/0x21 [ 13.167717][ T83] ? do_raw_spin_lock+0x131/0x280 [ 13.167720][ T83] ? __rwlock_init+0x150/0x150 [ 13.167724][ T83] ? do_raw_spin_lock+0x131/0x280 [ 13.167727][ T83] do_exit.cold+0x82/0x9c [ 13.167731][ T83] ? exit_notify+0x890/0x890 [ 13.167733][ T83] ? __lock_release.isra.0+0x69/0x1a0 [ 13.167736][ T83] ? rcu_is_watching+0x16/0xd0 [ 13.167740][ T83] do_group_exit+0xb8/0x370 [ 13.167743][ T83] __x64_sys_exit_group+0x3c/0x50 [ 13.167745][ T83] x64_sys_call+0x1567/0x1570 [ 13.167747][ T83] do_syscall_64+0xff/0x530 [ 13.167750][ T83] ? irq_exit_rcu+0x1a/0x30 [ 13.167754][ T83] entry_SYSCALL_64_after_hwframe+0x4b/0x53 [ 13.167756][ T83] RIP: 0033:0x7fd85492a1b8 [ 13.167759][ T83] Code: Unable to access opcode bytes at 0x7fd85492a18e. [ 13.167760][ T83] RSP: 002b:00007ffee56dba78 EFLAGS: 00000256 ORIG_RAX: 00000000000000e7 [ 13.167763][ T83] RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 00007fd85492a1b8 [ 13.167764][ T83] RDX: 0000000000000000 RSI: fffffffffffffe90 RDI: 0000000000000000 [ 13.167765][ T83] RBP: 00007ffee56dbc00 R08: 0000556cbe455608 R09: 0000000000000000 [ 13.167766][ T83] R10: 0000000000000000 R11: 0000000000000256 R12: 0000000000000000 [ 13.167767][ T83] R13: 00007fd854188050 R14: 00007fd854e5bd9e R15: 0000556cbe457140 [ 13.167775][ T83]