[ 44.079512][ T200] (udev-worker) (200) used greatest stack depth: 22696 bytes left [ 44.079533][ T200] BUG: sleeping function called from invalid context at ./include/linux/sched/mm.h:322 [ 44.079535][ T200] in_atomic(): 1, irqs_disabled(): 1, non_block: 0, pid: 200, name: (udev-worker) [ 44.079537][ T200] preempt_count: 2, expected: 0 [ 44.079538][ T200] RCU nest depth: 0, expected: 0 [ 44.079539][ T200] locks held by (udev-worker)/200: 5, last CPU#1: [ 44.079541][ T200] #0: ffffffff9ce167b8 (low_water_lock){+.+.}-{3:3}, at: do_exit+0x887/0xdc0 [ 44.079553][ T200] #1: ffffffff9cf7ddc0 (console_lock){+.+.}-{0:0}, at: vprintk_emit+0x320/0x3e0 [ 44.079558][ T200] #2: ffffffff9cf7de38 (console_srcu){....}-{0:0}, at: console_flush_one_record+0x106/0x710 [ 44.079562][ T200] #3: ffffffff9ce9d760 (console_owner){....}-{0:0}, at: console_lock_spinning_enable+0x40/0x60 [ 44.079566][ T200] #4: ffffffff9ce9d660 (printk_legacy_map-wait-type-override){....}-{3:3}, at: console_emit_next_record+0x1df/0x4c0 [ 44.079571][ T200] irq event stamp: 5171804 [ 44.079572][ T200] hardirqs last enabled at (5171803): [] __down_trylock_console_sem+0x86/0xa0 [ 44.079575][ T200] hardirqs last disabled at (5171804): [] console_emit_next_record+0x3d4/0x4c0 [ 44.079578][ T200] softirqs last enabled at (5171734): [] netlink_release+0x17b/0xcf0 [ 44.079582][ T200] softirqs last disabled at (5171732): [] netlink_release+0xd2/0xcf0 [ 44.079584][ T200] Preemption disabled at: [ 44.079585][ T200] [<0000000000000000>] 0x0 [ 44.079593][ T200] CPU: 1 UID: 0 PID: 200 Comm: (udev-worker) Tainted: G W 7.2.0-virtme #1 PREEMPT(full) [ 44.079596][ T200] Tainted: [W]=WARN [ 44.079597][ T200] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011 [ 44.079599][ T200] Call Trace: [ 44.079601][ T200] [ 44.079602][ T200] dump_stack_lvl+0x6f/0xa0 [ 44.079609][ T200] __might_resched.cold+0x1fe/0x2c1 [ 44.079614][ T200] ? perf_trace_sched_switch+0x7c0/0x7c0 [ 44.079618][ T200] ? __kmalloc_noprof+0xdb/0x760 [ 44.079622][ T200] __kmalloc_noprof+0x443/0x760 [ 44.079624][ T200] ? alloc_buf.isra.0+0x4b/0x260 [ 44.079631][ T200] ? do_raw_spin_unlock+0x59/0x250 [ 44.079634][ T200] alloc_buf.isra.0+0x4b/0x260 [ 44.079638][ T200] put_chars+0x1e1/0x2f0 [ 44.079640][ T200] ? __send_to_port+0x420/0x420 [ 44.079641][ T200] ? rcu_lockdep_current_cpu_online+0x3f/0x1b0 [ 44.079645][ T200] ? validate_chain+0x38b/0xc20 [ 44.079651][ T200] hvc_console_print+0x292/0x780 [ 44.079659][ T200] ? hvc_write+0x3a0/0x3a0 [ 44.079661][ T200] ? rcu_is_watching+0x16/0xd0 [ 44.079663][ T200] ? lock_acquire+0x13c/0x160 [ 44.079668][ T200] console_emit_next_record+0x22f/0x4c0 [ 44.079672][ T200] ? devkmsg_read+0x4b0/0x4b0 [ 44.079674][ T200] ? console_flush_one_record+0x106/0x710 [ 44.079677][ T200] ? rcu_is_watching+0x16/0xd0 [ 44.079679][ T200] ? lock_acquire+0x13c/0x160 [ 44.079683][ T200] console_flush_one_record+0x46f/0x710 [ 44.079687][ T200] ? console_emit_next_record+0x4c0/0x4c0 [ 44.079689][ T200] ? __lock_acquire+0x518/0xc20 [ 44.079695][ T200] console_unlock+0xee/0x1f0 [ 44.079698][ T200] ? console_flush_one_record+0x710/0x710 [ 44.079700][ T200] ? rcu_is_watching+0x16/0xd0 [ 44.079702][ T200] ? lock_acquire+0xe0/0x160 [ 44.079706][ T200] ? __down_trylock_console_sem+0x5e/0xa0 [ 44.079707][ T200] ? vprintk_emit+0x320/0x3e0 [ 44.079710][ T200] vprintk_emit+0x37c/0x3e0 [ 44.079714][ T200] ? wake_up_klogd_work_func+0x90/0x90 [ 44.079717][ T200] ? __lock_acquire+0x518/0xc20 [ 44.079720][ T200] _printk+0xc7/0x100 [ 44.079724][ T200] ? snapshot_read.cold+0x21/0x21 [ 44.079727][ T200] ? do_raw_spin_lock+0x131/0x280 [ 44.079730][ T200] ? __rwlock_init+0x150/0x150 [ 44.079734][ T200] ? do_raw_spin_lock+0x131/0x280 [ 44.079737][ T200] do_exit.cold+0x82/0x9c [ 44.079741][ T200] ? exit_notify+0x890/0x890 [ 44.079742][ T200] ? __lock_release.isra.0+0x69/0x1a0 [ 44.079745][ T200] ? rcu_is_watching+0x16/0xd0 [ 44.079748][ T200] do_group_exit+0xb8/0x370 [ 44.079751][ T200] __x64_sys_exit_group+0x3c/0x50 [ 44.079753][ T200] x64_sys_call+0x1567/0x1570 [ 44.079756][ T200] do_syscall_64+0xff/0x530 [ 44.079760][ T200] ? exc_page_fault+0xee/0x100 [ 44.079763][ T200] entry_SYSCALL_64_after_hwframe+0x4b/0x53 [ 44.079766][ T200] RIP: 0033:0x7f19d21cb1b8 [ 44.079768][ T200] Code: Unable to access opcode bytes at 0x7f19d21cb18e. [ 44.079769][ T200] RSP: 002b:00007ffddd5d3d18 EFLAGS: 00000256 ORIG_RAX: 00000000000000e7 [ 44.079772][ T200] RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 00007f19d21cb1b8 [ 44.079773][ T200] RDX: 0000000000000000 RSI: fffffffffffffe90 RDI: 0000000000000000 [ 44.079774][ T200] RBP: 00007ffddd5d3ea0 R08: 000055e7e6cf6ce8 R09: 0000000000000000 [ 44.079775][ T200] R10: 0000000000000000 R11: 0000000000000256 R12: 0000000000000000 [ 44.079776][ T200] R13: 00007f19d1a29050 R14: 00007f19d26fcd9e R15: 000055e7e6d24d00 [ 44.079783][ T200]