[ 13.631128][ T87] (udev-worker) (87) used greatest stack depth: 22696 bytes left [ 13.631146][ T87] BUG: sleeping function called from invalid context at ./include/linux/sched/mm.h:322 [ 13.631148][ T87] in_atomic(): 1, irqs_disabled(): 1, non_block: 0, pid: 87, name: (udev-worker) [ 13.631150][ T87] preempt_count: 2, expected: 0 [ 13.631150][ T87] RCU nest depth: 0, expected: 0 [ 13.631151][ T87] locks held by (udev-worker)/87: 5, last CPU#1: [ 13.631153][ T87] #0: ffffffffba0027b8 (low_water_lock){+.+.}-{3:3}, at: do_exit+0x887/0xdc0 [ 13.631167][ T87] #1: ffffffffba199cc0 (console_lock){+.+.}-{0:0}, at: vprintk_emit+0x320/0x3e0 [ 13.631173][ T87] #2: ffffffffba199d38 (console_srcu){....}-{0:0}, at: console_flush_one_record+0x106/0x710 [ 13.631177][ T87] #3: ffffffffba089660 (console_owner){....}-{0:0}, at: console_lock_spinning_enable+0x40/0x60 [ 13.631180][ T87] #4: ffffffffba089560 (printk_legacy_map-wait-type-override){....}-{3:3}, at: console_emit_next_record+0x202/0x4f0 [ 13.631184][ T87] irq event stamp: 381578 [ 13.631185][ T87] hardirqs last enabled at (381577): [] __down_trylock_console_sem+0x86/0xa0 [ 13.631187][ T87] hardirqs last disabled at (381578): [] console_emit_next_record+0x3f8/0x4f0 [ 13.631189][ T87] softirqs last enabled at (381512): [] netlink_release+0x17b/0xcf0 [ 13.631193][ T87] softirqs last disabled at (381510): [] netlink_release+0xd2/0xcf0 [ 13.631196][ T87] Preemption disabled at: [ 13.631197][ T87] [<0000000000000000>] 0x0 [ 13.631203][ T87] CPU: 1 UID: 0 PID: 87 Comm: (udev-worker) Tainted: G W 7.2.0-virtme #1 PREEMPT(full) [ 13.631207][ T87] Tainted: [W]=WARN [ 13.631208][ T87] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011 [ 13.631210][ T87] Call Trace: [ 13.631212][ T87] [ 13.631213][ T87] dump_stack_lvl+0x6f/0xa0 [ 13.631220][ T87] __might_resched.cold+0x1fe/0x2c1 [ 13.631224][ T87] ? perf_trace_sched_switch+0x7c0/0x7c0 [ 13.631228][ T87] ? __kmalloc_noprof+0xdb/0x760 [ 13.631233][ T87] __kmalloc_noprof+0x443/0x760 [ 13.631235][ T87] ? alloc_buf.isra.0+0x4b/0x260 [ 13.631240][ T87] ? do_raw_spin_unlock+0x59/0x250 [ 13.631243][ T87] alloc_buf.isra.0+0x4b/0x260 [ 13.631246][ T87] put_chars+0x1e1/0x2f0 [ 13.631249][ T87] ? __send_to_port+0x420/0x420 [ 13.631250][ T87] ? printk_get_next_message+0x2fe/0x7d0 [ 13.631253][ T87] ? rcu_read_lock_any_held+0x3c/0x90 [ 13.631256][ T87] ? validate_chain+0x38b/0xc20 [ 13.631260][ T87] hvc_console_print+0x292/0x780 [ 13.631263][ T87] ? __lock_acquire+0x518/0xc20 [ 13.631264][ T87] ? __lock_acquire+0x518/0xc20 [ 13.631268][ T87] ? hvc_write+0x3a0/0x3a0 [ 13.631271][ T87] ? rcu_is_watching+0x16/0xd0 [ 13.631274][ T87] ? lock_acquire+0x13c/0x160 [ 13.631278][ T87] console_emit_next_record+0x252/0x4f0 [ 13.631282][ T87] ? devkmsg_read+0x4e0/0x4e0 [ 13.631286][ T87] ? rcu_is_watching+0x16/0xd0 [ 13.631288][ T87] ? lock_acquire+0x13c/0x160 [ 13.631291][ T87] console_flush_one_record+0x46f/0x710 [ 13.631296][ T87] ? console_emit_next_record+0x4f0/0x4f0 [ 13.631297][ T87] ? __lock_acquire+0x518/0xc20 [ 13.631302][ T87] console_unlock+0xee/0x1f0 [ 13.631305][ T87] ? console_flush_one_record+0x710/0x710 [ 13.631306][ T87] ? rcu_is_watching+0x16/0xd0 [ 13.631308][ T87] ? lock_acquire+0x60/0x160 [ 13.631312][ T87] ? __down_trylock_console_sem+0x5e/0xa0 [ 13.631313][ T87] ? vprintk_emit+0x320/0x3e0 [ 13.631316][ T87] vprintk_emit+0x37c/0x3e0 [ 13.631320][ T87] ? wake_up_klogd_work_func+0x90/0x90 [ 13.631323][ T87] ? __lock_acquire+0x518/0xc20 [ 13.631326][ T87] _printk+0xc7/0x100 [ 13.631330][ T87] ? snapshot_read.cold+0x21/0x21 [ 13.631333][ T87] ? do_raw_spin_lock+0x131/0x280 [ 13.631335][ T87] ? __rwlock_init+0x150/0x150 [ 13.631339][ T87] ? do_raw_spin_lock+0x131/0x280 [ 13.631341][ T87] do_exit.cold+0x82/0x9c [ 13.631345][ T87] ? exit_notify+0x890/0x890 [ 13.631347][ T87] ? __lock_release.isra.0+0x69/0x1a0 [ 13.631349][ T87] ? rcu_is_watching+0x16/0xd0 [ 13.631353][ T87] do_group_exit+0xb8/0x370 [ 13.631356][ T87] __x64_sys_exit_group+0x3c/0x50 [ 13.631359][ T87] x64_sys_call+0x1567/0x1570 [ 13.631361][ T87] do_syscall_64+0xff/0x530 [ 13.631364][ T87] ? exc_page_fault+0xee/0x100 [ 13.631368][ T87] entry_SYSCALL_64_after_hwframe+0x4b/0x53 [ 13.631370][ T87] RIP: 0033:0x7f561d1131b8 [ 13.631372][ T87] Code: Unable to access opcode bytes at 0x7f561d11318e. [ 13.631373][ T87] RSP: 002b:00007fffc0eb3678 EFLAGS: 00000256 ORIG_RAX: 00000000000000e7 [ 13.631375][ T87] RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 00007f561d1131b8 [ 13.631377][ T87] RDX: 0000000000000000 RSI: fffffffffffffe90 RDI: 0000000000000000 [ 13.631378][ T87] RBP: 00007fffc0eb3800 R08: 00005648547fdb08 R09: 0000000000000000 [ 13.631379][ T87] R10: 0000000000000000 R11: 0000000000000256 R12: 0000000000000000 [ 13.631380][ T87] R13: 00007f561c971050 R14: 00007f561d644d9e R15: 00005648546a1350 [ 13.631386][ T87]