[ 14.232329][ T84] (udev-worker) (84) used greatest stack depth: 22696 bytes left [ 14.232348][ T84] BUG: sleeping function called from invalid context at ./include/linux/sched/mm.h:322 [ 14.232350][ T84] in_atomic(): 1, irqs_disabled(): 1, non_block: 0, pid: 84, name: (udev-worker) [ 14.232352][ T84] preempt_count: 2, expected: 0 [ 14.232353][ T84] RCU nest depth: 0, expected: 0 [ 14.232354][ T84] locks held by (udev-worker)/84: 5, last CPU#1: [ 14.232360][ T84] #0: ffffffffb90027b8 (low_water_lock){+.+.}-{3:3}, at: do_exit+0x887/0xdc0 [ 14.232373][ T84] #1: ffffffffb9199cc0 (console_lock){+.+.}-{0:0}, at: vprintk_emit+0x320/0x3e0 [ 14.232378][ T84] #2: ffffffffb9199d38 (console_srcu){....}-{0:0}, at: console_flush_one_record+0x106/0x710 [ 14.232382][ T84] #3: ffffffffb9089660 (console_owner){....}-{0:0}, at: console_lock_spinning_enable+0x40/0x60 [ 14.232385][ T84] #4: ffffffffb9089560 (printk_legacy_map-wait-type-override){....}-{3:3}, at: console_emit_next_record+0x202/0x4f0 [ 14.232389][ T84] irq event stamp: 788924 [ 14.232389][ T84] hardirqs last enabled at (788923): [] __down_trylock_console_sem+0x86/0xa0 [ 14.232393][ T84] hardirqs last disabled at (788924): [] console_emit_next_record+0x3f8/0x4f0 [ 14.232395][ T84] softirqs last enabled at (788718): [] netlink_release+0x17b/0xcf0 [ 14.232399][ T84] softirqs last disabled at (788716): [] netlink_release+0xd2/0xcf0 [ 14.232401][ T84] Preemption disabled at: [ 14.232402][ T84] [<0000000000000000>] 0x0 [ 14.232409][ T84] CPU: 1 UID: 0 PID: 84 Comm: (udev-worker) Tainted: G W 7.2.0-virtme #1 PREEMPT(full) [ 14.232412][ T84] Tainted: [W]=WARN [ 14.232413][ T84] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011 [ 14.232415][ T84] Call Trace: [ 14.232416][ T84] [ 14.232418][ T84] dump_stack_lvl+0x6f/0xa0 [ 14.232425][ T84] __might_resched.cold+0x1fe/0x2c1 [ 14.232431][ T84] ? perf_trace_sched_switch+0x7c0/0x7c0 [ 14.232435][ T84] ? __kmalloc_noprof+0xdb/0x760 [ 14.232440][ T84] __kmalloc_noprof+0x443/0x760 [ 14.232442][ T84] ? alloc_buf.isra.0+0x4b/0x260 [ 14.232449][ T84] ? do_raw_spin_unlock+0x59/0x250 [ 14.232451][ T84] alloc_buf.isra.0+0x4b/0x260 [ 14.232455][ T84] put_chars+0x1e1/0x2f0 [ 14.232458][ T84] ? __send_to_port+0x420/0x420 [ 14.232460][ T84] ? printk_get_next_message+0x2fe/0x7d0 [ 14.232463][ T84] ? rcu_read_lock_any_held+0x3c/0x90 [ 14.232467][ T84] ? validate_chain+0x38b/0xc20 [ 14.232471][ T84] hvc_console_print+0x292/0x780 [ 14.232475][ T84] ? __lock_acquire+0x518/0xc20 [ 14.232477][ T84] ? __lock_acquire+0x518/0xc20 [ 14.232482][ T84] ? hvc_write+0x3a0/0x3a0 [ 14.232485][ T84] ? rcu_is_watching+0x16/0xd0 [ 14.232488][ T84] ? lock_acquire+0x13c/0x160 [ 14.232492][ T84] console_emit_next_record+0x252/0x4f0 [ 14.232495][ T84] ? devkmsg_read+0x4e0/0x4e0 [ 14.232499][ T84] ? rcu_is_watching+0x16/0xd0 [ 14.232501][ T84] ? lock_acquire+0x13c/0x160 [ 14.232505][ T84] console_flush_one_record+0x46f/0x710 [ 14.232508][ T84] ? console_emit_next_record+0x4f0/0x4f0 [ 14.232510][ T84] ? __lock_acquire+0x518/0xc20 [ 14.232515][ T84] console_unlock+0xee/0x1f0 [ 14.232518][ T84] ? console_flush_one_record+0x710/0x710 [ 14.232519][ T84] ? rcu_is_watching+0x16/0xd0 [ 14.232521][ T84] ? lock_acquire+0x60/0x160 [ 14.232525][ T84] ? __down_trylock_console_sem+0x5e/0xa0 [ 14.232527][ T84] ? vprintk_emit+0x320/0x3e0 [ 14.232529][ T84] vprintk_emit+0x37c/0x3e0 [ 14.232533][ T84] ? wake_up_klogd_work_func+0x90/0x90 [ 14.232536][ T84] ? __lock_acquire+0x518/0xc20 [ 14.232540][ T84] _printk+0xc7/0x100 [ 14.232543][ T84] ? snapshot_read.cold+0x21/0x21 [ 14.232546][ T84] ? do_raw_spin_lock+0x131/0x280 [ 14.232548][ T84] ? __rwlock_init+0x150/0x150 [ 14.232551][ T84] ? do_raw_spin_lock+0x131/0x280 [ 14.232553][ T84] do_exit.cold+0x82/0x9c [ 14.232557][ T84] ? exit_notify+0x890/0x890 [ 14.232558][ T84] ? __lock_release.isra.0+0x69/0x1a0 [ 14.232561][ T84] ? rcu_is_watching+0x16/0xd0 [ 14.232565][ T84] do_group_exit+0xb8/0x370 [ 14.232568][ T84] __x64_sys_exit_group+0x3c/0x50 [ 14.232570][ T84] x64_sys_call+0x1567/0x1570 [ 14.232573][ T84] do_syscall_64+0xff/0x530 [ 14.232575][ T84] ? exc_page_fault+0xee/0x100 [ 14.232578][ T84] entry_SYSCALL_64_after_hwframe+0x4b/0x53 [ 14.232581][ T84] RIP: 0033:0x7f45b37cd1b8 [ 14.232583][ T84] Code: Unable to access opcode bytes at 0x7f45b37cd18e. [ 14.232584][ T84] RSP: 002b:00007ffda12c5e88 EFLAGS: 00000256 ORIG_RAX: 00000000000000e7 [ 14.232587][ T84] RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 00007f45b37cd1b8 [ 14.232588][ T84] RDX: 0000000000000000 RSI: fffffffffffffe90 RDI: 0000000000000000 [ 14.232589][ T84] RBP: 00007ffda12c6010 R08: 000056315647cf48 R09: 0000000000000000 [ 14.232590][ T84] R10: 0000000000000000 R11: 0000000000000256 R12: 0000000000000000 [ 14.232590][ T84] R13: 00007f45b302b050 R14: 00007f45b3cfed9e R15: 0000563156484330 [ 14.232597][ T84]