[ 15.775315][ T85] (udev-worker) (85) used greatest stack depth: 22696 bytes left [ 15.775333][ T85] BUG: sleeping function called from invalid context at ./include/linux/sched/mm.h:322 [ 15.775335][ T85] in_atomic(): 1, irqs_disabled(): 1, non_block: 0, pid: 85, name: (udev-worker) [ 15.775337][ T85] preempt_count: 2, expected: 0 [ 15.775338][ T85] RCU nest depth: 0, expected: 0 [ 15.775339][ T85] INFO: lockdep is turned off. [ 15.775340][ T85] irq event stamp: 0 [ 15.775341][ T85] hardirqs last enabled at (0): [<0000000000000000>] 0x0 [ 15.775345][ T85] hardirqs last disabled at (0): [] copy_process+0x1ccd/0x6240 [ 15.775351][ T85] softirqs last enabled at (0): [] copy_process+0x1d21/0x6240 [ 15.775353][ T85] softirqs last disabled at (0): [<0000000000000000>] 0x0 [ 15.775355][ T85] Preemption disabled at: [ 15.775356][ T85] [<0000000000000000>] 0x0 [ 15.775360][ T85] CPU: 1 UID: 0 PID: 85 Comm: (udev-worker) Tainted: G W 7.2.0-virtme #1 PREEMPT(full) [ 15.775364][ T85] Tainted: [W]=WARN [ 15.775365][ T85] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011 [ 15.775366][ T85] Call Trace: [ 15.775368][ T85] [ 15.775369][ T85] dump_stack_lvl+0x6f/0xa0 [ 15.775375][ T85] __might_resched.cold+0x1fe/0x2c1 [ 15.775379][ T85] ? perf_trace_sched_switch+0x7c0/0x7c0 [ 15.775383][ T85] ? rcu_is_watching+0x16/0xd0 [ 15.775386][ T85] __kmalloc_noprof+0x443/0x760 [ 15.775391][ T85] ? __rwlock_init+0x150/0x150 [ 15.775394][ T85] ? alloc_buf.isra.0+0x4b/0x260 [ 15.775399][ T85] ? do_raw_spin_unlock+0x59/0x250 [ 15.775400][ T85] alloc_buf.isra.0+0x4b/0x260 [ 15.775403][ T85] put_chars+0x1e1/0x2f0 [ 15.775405][ T85] ? __send_to_port+0x420/0x420 [ 15.775407][ T85] ? printk_get_next_message+0x2fe/0x7d0 [ 15.775410][ T85] ? console_prepend_replay+0x20/0x20 [ 15.775412][ T85] ? desc_read+0x219/0x2f0 [ 15.775414][ T85] hvc_console_print+0x292/0x780 [ 15.775418][ T85] ? hvc_write+0x3a0/0x3a0 [ 15.775420][ T85] ? __rwlock_init+0x150/0x150 [ 15.775422][ T85] ? rcu_is_watching+0x16/0xd0 [ 15.775423][ T85] ? rcu_is_watching+0x16/0xd0 [ 15.775424][ T85] ? lock_acquire+0x13c/0x160 [ 15.775427][ T85] console_emit_next_record+0x252/0x4f0 [ 15.775430][ T85] ? devkmsg_read+0x4e0/0x4e0 [ 15.775432][ T85] ? _prb_read_valid+0x6e0/0x6e0 [ 15.775433][ T85] ? __asan_memmove+0x3c/0x60 [ 15.775436][ T85] ? rcu_is_watching+0x16/0xd0 [ 15.775437][ T85] ? rcu_is_watching+0x16/0xd0 [ 15.775438][ T85] ? rcu_is_watching+0x16/0xd0 [ 15.775439][ T85] ? lock_acquire+0x13c/0x160 [ 15.775441][ T85] ? console_flush_one_record+0x111/0x710 [ 15.775443][ T85] console_flush_one_record+0x46f/0x710 [ 15.775445][ T85] ? console_emit_next_record+0x4f0/0x4f0 [ 15.775448][ T85] console_unlock+0xee/0x1f0 [ 15.775450][ T85] ? lock_acquire+0x13c/0x160 [ 15.775452][ T85] ? console_flush_one_record+0x710/0x710 [ 15.775454][ T85] ? rcu_is_watching+0x16/0xd0 [ 15.775455][ T85] ? lock_release+0x184/0x1f0 [ 15.775456][ T85] ? lock_acquire+0x60/0x160 [ 15.775458][ T85] ? sync_exp_reset_tree_hotplug+0x3a0/0x3f0 [ 15.775460][ T85] ? __down_trylock_console_sem+0x5e/0xa0 [ 15.775461][ T85] ? vprintk_emit+0x320/0x3e0 [ 15.775463][ T85] vprintk_emit+0x37c/0x3e0 [ 15.775465][ T85] ? wake_up_klogd_work_func+0x90/0x90 [ 15.775466][ T85] ? do_raw_read_unlock+0x70/0x70 [ 15.775468][ T85] ? forget_original_parent+0x5c/0xdb0 [ 15.775471][ T85] _printk+0xc7/0x100 [ 15.775474][ T85] ? snapshot_read.cold+0x21/0x21 [ 15.775475][ T85] ? do_raw_spin_lock+0x131/0x280 [ 15.775477][ T85] ? do_raw_spin_lock+0x131/0x280 [ 15.775479][ T85] ? __rwlock_init+0x150/0x150 [ 15.775481][ T85] ? do_raw_spin_lock+0x131/0x280 [ 15.775483][ T85] do_exit.cold+0x82/0x9c [ 15.775486][ T85] ? vfs_read+0x3dd/0x7b0 [ 15.775488][ T85] ? exit_notify+0x890/0x890 [ 15.775490][ T85] ? posixtimer_sig_unignore.isra.0+0x5f0/0x5f0 [ 15.775492][ T85] ? rcu_is_watching+0x16/0xd0 [ 15.775494][ T85] do_group_exit+0xb8/0x370 [ 15.775496][ T85] __x64_sys_exit_group+0x3c/0x50 [ 15.775497][ T85] x64_sys_call+0x1567/0x1570 [ 15.775499][ T85] do_syscall_64+0xff/0x530 [ 15.775504][ T85] ? common_interrupt+0x5a/0xf0 [ 15.775505][ T85] entry_SYSCALL_64_after_hwframe+0x4b/0x53 [ 15.775507][ T85] RIP: 0033:0x7f1d20b7b1b8 [ 15.775509][ T85] Code: Unable to access opcode bytes at 0x7f1d20b7b18e. [ 15.775510][ T85] RSP: 002b:00007fffb77e8f68 EFLAGS: 00000256 ORIG_RAX: 00000000000000e7 [ 15.775514][ T85] RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 00007f1d20b7b1b8 [ 15.775515][ T85] RDX: 0000000000000000 RSI: fffffffffffffe90 RDI: 0000000000000000 [ 15.775516][ T85] RBP: 00007fffb77e90f0 R08: 000055b29ce1e358 R09: 0000000000000000 [ 15.775517][ T85] R10: 0000000000000000 R11: 0000000000000256 R12: 0000000000000000 [ 15.775517][ T85] R13: 00007f1d203d9050 R14: 00007f1d210acd9e R15: 000055b29ccbf4e0 [ 15.775520][ T85]