[ 14.696519][ T181] (udev-worker) (181) used greatest stack depth: 22696 bytes left [ 14.696540][ T181] BUG: sleeping function called from invalid context at ./include/linux/sched/mm.h:322 [ 14.696543][ T181] in_atomic(): 1, irqs_disabled(): 1, non_block: 0, pid: 181, name: (udev-worker) [ 14.696545][ T181] preempt_count: 2, expected: 0 [ 14.696547][ T181] RCU nest depth: 0, expected: 0 [ 14.696548][ T181] INFO: lockdep is turned off. [ 14.696550][ T181] irq event stamp: 0 [ 14.696551][ T181] hardirqs last enabled at (0): [<0000000000000000>] 0x0 [ 14.696557][ T181] hardirqs last disabled at (0): [] copy_process+0x1ccd/0x6240 [ 14.696565][ T181] softirqs last enabled at (0): [] copy_process+0x1d21/0x6240 [ 14.696567][ T181] softirqs last disabled at (0): [<0000000000000000>] 0x0 [ 14.696570][ T181] Preemption disabled at: [ 14.696571][ T181] [<0000000000000000>] 0x0 [ 14.696577][ T181] CPU: 0 UID: 0 PID: 181 Comm: (udev-worker) Tainted: G W 7.2.0-virtme #1 PREEMPT(full) [ 14.696582][ T181] Tainted: [W]=WARN [ 14.696583][ T181] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011 [ 14.696586][ T181] Call Trace: [ 14.696587][ T181] [ 14.696589][ T181] dump_stack_lvl+0x6f/0xa0 [ 14.696596][ T181] __might_resched.cold+0x1fe/0x2c1 [ 14.696600][ T181] ? perf_trace_sched_switch+0x7c0/0x7c0 [ 14.696605][ T181] ? rcu_is_watching+0x16/0xd0 [ 14.696609][ T181] __kmalloc_noprof+0x443/0x760 [ 14.696614][ T181] ? __rwlock_init+0x150/0x150 [ 14.696618][ T181] ? alloc_buf.isra.0+0x4b/0x260 [ 14.696624][ T181] ? do_raw_spin_unlock+0x59/0x250 [ 14.696626][ T181] alloc_buf.isra.0+0x4b/0x260 [ 14.696630][ T181] put_chars+0x1e1/0x2f0 [ 14.696633][ T181] ? __send_to_port+0x420/0x420 [ 14.696635][ T181] ? printk_get_next_message+0x2fe/0x7d0 [ 14.696640][ T181] ? console_prepend_replay+0x20/0x20 [ 14.696642][ T181] ? desc_read+0x219/0x2f0 [ 14.696646][ T181] hvc_console_print+0x292/0x780 [ 14.696660][ T181] ? hvc_write+0x3a0/0x3a0 [ 14.696663][ T181] ? __rwlock_init+0x150/0x150 [ 14.696665][ T181] ? rcu_is_watching+0x16/0xd0 [ 14.696667][ T181] ? rcu_is_watching+0x16/0xd0 [ 14.696669][ T181] ? lock_acquire+0x13c/0x160 [ 14.696673][ T181] console_emit_next_record+0x252/0x4f0 [ 14.696677][ T181] ? devkmsg_read+0x4e0/0x4e0 [ 14.696679][ T181] ? _prb_read_valid+0x6e0/0x6e0 [ 14.696682][ T181] ? __asan_memmove+0x3c/0x60 [ 14.696685][ T181] ? rcu_is_watching+0x16/0xd0 [ 14.696687][ T181] ? rcu_is_watching+0x16/0xd0 [ 14.696689][ T181] ? rcu_is_watching+0x16/0xd0 [ 14.696690][ T181] ? lock_acquire+0x13c/0x160 [ 14.696694][ T181] ? console_flush_one_record+0x111/0x710 [ 14.696696][ T181] console_flush_one_record+0x46f/0x710 [ 14.696700][ T181] ? console_emit_next_record+0x4f0/0x4f0 [ 14.696704][ T181] console_unlock+0xee/0x1f0 [ 14.696707][ T181] ? lock_acquire+0x13c/0x160 [ 14.696710][ T181] ? console_flush_one_record+0x710/0x710 [ 14.696712][ T181] ? rcu_is_watching+0x16/0xd0 [ 14.696714][ T181] ? lock_release+0x184/0x1f0 [ 14.696717][ T181] ? lock_acquire+0x60/0x160 [ 14.696719][ T181] ? sync_exp_reset_tree_hotplug+0x3a0/0x3f0 [ 14.696722][ T181] ? __down_trylock_console_sem+0x5e/0xa0 [ 14.696724][ T181] ? vprintk_emit+0x320/0x3e0 [ 14.696727][ T181] vprintk_emit+0x37c/0x3e0 [ 14.696730][ T181] ? wake_up_klogd_work_func+0x90/0x90 [ 14.696732][ T181] ? do_raw_read_unlock+0x70/0x70 [ 14.696735][ T181] ? forget_original_parent+0x5c/0xdb0 [ 14.696739][ T181] _printk+0xc7/0x100 [ 14.696743][ T181] ? snapshot_read.cold+0x21/0x21 [ 14.696745][ T181] ? do_raw_spin_lock+0x131/0x280 [ 14.696748][ T181] ? do_raw_spin_lock+0x131/0x280 [ 14.696750][ T181] ? __rwlock_init+0x150/0x150 [ 14.696754][ T181] ? do_raw_spin_lock+0x131/0x280 [ 14.696756][ T181] do_exit.cold+0x82/0x9c [ 14.696760][ T181] ? vfs_read+0x3dd/0x7b0 [ 14.696763][ T181] ? exit_notify+0x890/0x890 [ 14.696765][ T181] ? posixtimer_sig_unignore.isra.0+0x5f0/0x5f0 [ 14.696769][ T181] ? rcu_is_watching+0x16/0xd0 [ 14.696772][ T181] do_group_exit+0xb8/0x370 [ 14.696774][ T181] __x64_sys_exit_group+0x3c/0x50 [ 14.696777][ T181] x64_sys_call+0x1567/0x1570 [ 14.696780][ T181] do_syscall_64+0xff/0x530 [ 14.696784][ T181] ? exc_page_fault+0xee/0x100 [ 14.696787][ T181] entry_SYSCALL_64_after_hwframe+0x4b/0x53 [ 14.696790][ T181] RIP: 0033:0x7f3fc5a3a1b8 [ 14.696793][ T181] Code: Unable to access opcode bytes at 0x7f3fc5a3a18e. [ 14.696794][ T181] RSP: 002b:00007fff2d51dca8 EFLAGS: 00000256 ORIG_RAX: 00000000000000e7 [ 14.696799][ T181] RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 00007f3fc5a3a1b8 [ 14.696801][ T181] RDX: 0000000000000000 RSI: fffffffffffffe90 RDI: 0000000000000000 [ 14.696802][ T181] RBP: 00007fff2d51de30 R08: 000055f5b8dd04e8 R09: 0000000000000000 [ 14.696804][ T181] R10: 0000000000000000 R11: 0000000000000256 R12: 0000000000000000 [ 14.696805][ T181] R13: 00007f3fc5298050 R14: 00007f3fc5f6bd9e R15: 000055f5b8c4c4e0 [ 14.696809][ T181]