[ 12.417277][ T88] (udev-worker) (88) used greatest stack depth: 22696 bytes left [ 12.417296][ T88] BUG: sleeping function called from invalid context at ./include/linux/sched/mm.h:322 [ 12.417298][ T88] in_atomic(): 1, irqs_disabled(): 1, non_block: 0, pid: 88, name: (udev-worker) [ 12.417300][ T88] preempt_count: 2, expected: 0 [ 12.417301][ T88] RCU nest depth: 0, expected: 0 [ 12.417302][ T88] locks held by (udev-worker)/88: 5, last CPU#3: [ 12.417304][ T88] #0: ffffffffb2c027b8 (low_water_lock){+.+.}-{3:3}, at: do_exit+0x887/0xdc0 [ 12.417316][ T88] #1: ffffffffb2d99dc0 (console_lock){+.+.}-{0:0}, at: vprintk_emit+0x320/0x3e0 [ 12.417322][ T88] #2: ffffffffb2d99e38 (console_srcu){....}-{0:0}, at: console_flush_one_record+0x106/0x710 [ 12.417325][ T88] #3: ffffffffb2c89760 (console_owner){....}-{0:0}, at: console_lock_spinning_enable+0x40/0x60 [ 12.417329][ T88] #4: ffffffffb2c89660 (printk_legacy_map-wait-type-override){....}-{3:3}, at: console_emit_next_record+0x202/0x4f0 [ 12.417334][ T88] irq event stamp: 560436 [ 12.417334][ T88] hardirqs last enabled at (560435): [] __down_trylock_console_sem+0x86/0xa0 [ 12.417337][ T88] hardirqs last disabled at (560436): [] console_emit_next_record+0x3f8/0x4f0 [ 12.417339][ T88] softirqs last enabled at (560336): [] netlink_release+0x17b/0xcf0 [ 12.417343][ T88] softirqs last disabled at (560334): [] netlink_release+0xd2/0xcf0 [ 12.417346][ T88] Preemption disabled at: [ 12.417346][ T88] [<0000000000000000>] 0x0 [ 12.417354][ T88] CPU: 3 UID: 0 PID: 88 Comm: (udev-worker) Tainted: G W 7.2.0-virtme #1 PREEMPT(full) [ 12.417357][ T88] Tainted: [W]=WARN [ 12.417358][ T88] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011 [ 12.417359][ T88] Call Trace: [ 12.417361][ T88] [ 12.417363][ T88] dump_stack_lvl+0x6f/0xa0 [ 12.417369][ T88] __might_resched.cold+0x1fe/0x2c1 [ 12.417374][ T88] ? perf_trace_sched_switch+0x7c0/0x7c0 [ 12.417378][ T88] ? __kmalloc_noprof+0xdb/0x760 [ 12.417383][ T88] __kmalloc_noprof+0x443/0x760 [ 12.417386][ T88] ? alloc_buf.isra.0+0x4b/0x260 [ 12.417392][ T88] ? do_raw_spin_unlock+0x59/0x250 [ 12.417394][ T88] alloc_buf.isra.0+0x4b/0x260 [ 12.417398][ T88] put_chars+0x1e1/0x2f0 [ 12.417401][ T88] ? __send_to_port+0x420/0x420 [ 12.417403][ T88] ? printk_get_next_message+0x2fe/0x7d0 [ 12.417407][ T88] ? rcu_read_lock_any_held+0x3c/0x90 [ 12.417410][ T88] ? validate_chain+0x38b/0xc20 [ 12.417414][ T88] hvc_console_print+0x292/0x780 [ 12.417417][ T88] ? __lock_acquire+0x518/0xc20 [ 12.417419][ T88] ? __lock_acquire+0x518/0xc20 [ 12.417423][ T88] ? hvc_write+0x3a0/0x3a0 [ 12.417430][ T88] ? rcu_is_watching+0x16/0xd0 [ 12.417434][ T88] ? lock_acquire+0x13c/0x160 [ 12.417438][ T88] console_emit_next_record+0x252/0x4f0 [ 12.417441][ T88] ? devkmsg_read+0x4e0/0x4e0 [ 12.417446][ T88] ? rcu_is_watching+0x16/0xd0 [ 12.417448][ T88] ? lock_acquire+0x13c/0x160 [ 12.417452][ T88] console_flush_one_record+0x46f/0x710 [ 12.417456][ T88] ? console_emit_next_record+0x4f0/0x4f0 [ 12.417457][ T88] ? __lock_acquire+0x518/0xc20 [ 12.417462][ T88] console_unlock+0xee/0x1f0 [ 12.417465][ T88] ? console_flush_one_record+0x710/0x710 [ 12.417467][ T88] ? rcu_is_watching+0x16/0xd0 [ 12.417469][ T88] ? lock_acquire+0xa0/0x160 [ 12.417473][ T88] ? __down_trylock_console_sem+0x5e/0xa0 [ 12.417474][ T88] ? vprintk_emit+0x320/0x3e0 [ 12.417477][ T88] vprintk_emit+0x37c/0x3e0 [ 12.417481][ T88] ? wake_up_klogd_work_func+0x90/0x90 [ 12.417485][ T88] ? __lock_acquire+0x518/0xc20 [ 12.417488][ T88] _printk+0xc7/0x100 [ 12.417492][ T88] ? snapshot_read.cold+0x21/0x21 [ 12.417494][ T88] ? do_raw_spin_lock+0x131/0x280 [ 12.417497][ T88] ? __rwlock_init+0x150/0x150 [ 12.417500][ T88] ? do_raw_spin_lock+0x131/0x280 [ 12.417503][ T88] do_exit.cold+0x82/0x9c [ 12.417507][ T88] ? exit_notify+0x890/0x890 [ 12.417508][ T88] ? __lock_release.isra.0+0x69/0x1a0 [ 12.417511][ T88] ? rcu_is_watching+0x16/0xd0 [ 12.417515][ T88] do_group_exit+0xb8/0x370 [ 12.417517][ T88] __x64_sys_exit_group+0x3c/0x50 [ 12.417519][ T88] x64_sys_call+0x1567/0x1570 [ 12.417521][ T88] do_syscall_64+0xff/0x530 [ 12.417525][ T88] ? exc_page_fault+0xee/0x100 [ 12.417528][ T88] entry_SYSCALL_64_after_hwframe+0x4b/0x53 [ 12.417531][ T88] RIP: 0033:0x7f44b139a1b8 [ 12.417533][ T88] Code: Unable to access opcode bytes at 0x7f44b139a18e. [ 12.417534][ T88] RSP: 002b:00007ffca94b7e48 EFLAGS: 00000256 ORIG_RAX: 00000000000000e7 [ 12.417536][ T88] RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 00007f44b139a1b8 [ 12.417539][ T88] RDX: 0000000000000000 RSI: fffffffffffffe90 RDI: 0000000000000000 [ 12.417540][ T88] RBP: 00007ffca94b7fd0 R08: 000056090e36b8b8 R09: 0000000000000000 [ 12.417541][ T88] R10: 0000000000000000 R11: 0000000000000256 R12: 0000000000000000 [ 12.417542][ T88] R13: 00007f44b0bf8050 R14: 00007f44b18cbd9e R15: 000056090e215480 [ 12.417548][ T88]