[ 18.251387][ T181] (udev-worker) (181) used greatest stack depth: 22696 bytes left [ 18.251405][ T181] BUG: sleeping function called from invalid context at ./include/linux/sched/mm.h:322 [ 18.251407][ T181] in_atomic(): 1, irqs_disabled(): 1, non_block: 0, pid: 181, name: (udev-worker) [ 18.251409][ T181] preempt_count: 2, expected: 0 [ 18.251410][ T181] RCU nest depth: 0, expected: 0 [ 18.251411][ T181] INFO: lockdep is turned off. [ 18.251412][ T181] irq event stamp: 170568 [ 18.251413][ T181] hardirqs last enabled at (170567): [] console_emit_next_record+0x3da/0x4f0 [ 18.251422][ T181] hardirqs last disabled at (170568): [] console_emit_next_record+0x3f8/0x4f0 [ 18.251424][ T181] softirqs last enabled at (170408): [] handle_softirqs+0x67c/0x900 [ 18.251428][ T181] softirqs last disabled at (170367): [] __irq_exit_rcu+0x145/0x1c0 [ 18.251430][ T181] Preemption disabled at: [ 18.251431][ T181] [<0000000000000000>] 0x0 [ 18.251437][ T181] CPU: 3 UID: 0 PID: 181 Comm: (udev-worker) Tainted: G W 7.2.0-virtme #1 PREEMPT(full) [ 18.251441][ T181] Tainted: [W]=WARN [ 18.251442][ T181] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011 [ 18.251443][ T181] Call Trace: [ 18.251445][ T181] [ 18.251446][ T181] dump_stack_lvl+0x6f/0xa0 [ 18.251452][ T181] __might_resched.cold+0x1fe/0x2c1 [ 18.251456][ T181] ? perf_trace_sched_switch+0x7c0/0x7c0 [ 18.251459][ T181] ? rcu_is_watching+0x16/0xd0 [ 18.251462][ T181] __kmalloc_noprof+0x443/0x760 [ 18.251466][ T181] ? __rwlock_init+0x150/0x150 [ 18.251469][ T181] ? alloc_buf.isra.0+0x4b/0x260 [ 18.251474][ T181] ? do_raw_spin_unlock+0x59/0x250 [ 18.251476][ T181] alloc_buf.isra.0+0x4b/0x260 [ 18.251478][ T181] put_chars+0x1e1/0x2f0 [ 18.251480][ T181] ? __send_to_port+0x420/0x420 [ 18.251482][ T181] ? printk_get_next_message+0x2fe/0x7d0 [ 18.251484][ T181] ? console_prepend_replay+0x20/0x20 [ 18.251486][ T181] ? desc_read+0x219/0x2f0 [ 18.251488][ T181] hvc_console_print+0x292/0x780 [ 18.251492][ T181] ? hvc_write+0x3a0/0x3a0 [ 18.251494][ T181] ? __rwlock_init+0x150/0x150 [ 18.251496][ T181] ? rcu_is_watching+0x16/0xd0 [ 18.251497][ T181] ? rcu_is_watching+0x16/0xd0 [ 18.251498][ T181] ? lock_acquire+0x13c/0x160 [ 18.251501][ T181] console_emit_next_record+0x252/0x4f0 [ 18.251504][ T181] ? devkmsg_read+0x4e0/0x4e0 [ 18.251506][ T181] ? _prb_read_valid+0x6e0/0x6e0 [ 18.251507][ T181] ? __asan_memmove+0x3c/0x60 [ 18.251510][ T181] ? rcu_is_watching+0x16/0xd0 [ 18.251511][ T181] ? rcu_is_watching+0x16/0xd0 [ 18.251512][ T181] ? rcu_is_watching+0x16/0xd0 [ 18.251513][ T181] ? lock_acquire+0x13c/0x160 [ 18.251515][ T181] ? console_flush_one_record+0x111/0x710 [ 18.251517][ T181] console_flush_one_record+0x46f/0x710 [ 18.251519][ T181] ? console_emit_next_record+0x4f0/0x4f0 [ 18.251522][ T181] console_unlock+0xee/0x1f0 [ 18.251524][ T181] ? lock_acquire+0x13c/0x160 [ 18.251526][ T181] ? console_flush_one_record+0x710/0x710 [ 18.251527][ T181] ? rcu_is_watching+0x16/0xd0 [ 18.251528][ T181] ? lock_release+0x184/0x1f0 [ 18.251530][ T181] ? lock_acquire+0x60/0x160 [ 18.251532][ T181] ? sync_exp_reset_tree_hotplug+0x3a0/0x3f0 [ 18.251533][ T181] ? __down_trylock_console_sem+0x5e/0xa0 [ 18.251535][ T181] ? vprintk_emit+0x320/0x3e0 [ 18.251537][ T181] vprintk_emit+0x37c/0x3e0 [ 18.251539][ T181] ? wake_up_klogd_work_func+0x90/0x90 [ 18.251540][ T181] ? do_raw_read_unlock+0x70/0x70 [ 18.251542][ T181] ? forget_original_parent+0x5c/0xdb0 [ 18.251544][ T181] _printk+0xc7/0x100 [ 18.251547][ T181] ? snapshot_read.cold+0x21/0x21 [ 18.251549][ T181] ? do_raw_spin_lock+0x131/0x280 [ 18.251550][ T181] ? do_raw_spin_lock+0x131/0x280 [ 18.251552][ T181] ? __rwlock_init+0x150/0x150 [ 18.251554][ T181] ? do_raw_spin_lock+0x131/0x280 [ 18.251556][ T181] do_exit.cold+0x82/0x9c [ 18.251560][ T181] ? exit_notify+0x890/0x890 [ 18.251561][ T181] ? posixtimer_sig_unignore.isra.0+0x5f0/0x5f0 [ 18.251563][ T181] ? rcu_is_watching+0x16/0xd0 [ 18.251565][ T181] do_group_exit+0xb8/0x370 [ 18.251567][ T181] __x64_sys_exit_group+0x3c/0x50 [ 18.251568][ T181] x64_sys_call+0x1567/0x1570 [ 18.251570][ T181] do_syscall_64+0xff/0x530 [ 18.251575][ T181] ? exc_page_fault+0xee/0x100 [ 18.251577][ T181] entry_SYSCALL_64_after_hwframe+0x4b/0x53 [ 18.251579][ T181] RIP: 0033:0x7fc56007b1b8 [ 18.251583][ T181] Code: Unable to access opcode bytes at 0x7fc56007b18e. [ 18.251584][ T181] RSP: 002b:00007ffc5cfe8338 EFLAGS: 00000256 ORIG_RAX: 00000000000000e7 [ 18.251588][ T181] RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 00007fc56007b1b8 [ 18.251589][ T181] RDX: 0000000000000000 RSI: fffffffffffffe90 RDI: 0000000000000000 [ 18.251590][ T181] RBP: 00007ffc5cfe84c0 R08: 000055da0300ec68 R09: 0000000000000000 [ 18.251591][ T181] R10: 0000000000000000 R11: 0000000000000256 R12: 0000000000000000 [ 18.251592][ T181] R13: 00007fc55f8d9050 R14: 00007fc5605acd9e R15: 000055da02e80f80 [ 18.251594][ T181]