[ 13.660521][ T82] (udev-worker) (82) used greatest stack depth: 22696 bytes left [ 13.660543][ T82] BUG: sleeping function called from invalid context at ./include/linux/sched/mm.h:322 [ 13.660545][ T82] in_atomic(): 1, irqs_disabled(): 1, non_block: 0, pid: 82, name: (udev-worker) [ 13.660547][ T82] preempt_count: 2, expected: 0 [ 13.660548][ T82] RCU nest depth: 0, expected: 0 [ 13.660548][ T82] locks held by (udev-worker)/82: 5, last CPU#3: [ 13.660551][ T82] #0: ffffffffb46027b8 (low_water_lock){+.+.}-{3:3}, at: do_exit+0x887/0xdc0 [ 13.660563][ T82] #1: ffffffffb4799cc0 (console_lock){+.+.}-{0:0}, at: vprintk_emit+0x320/0x3e0 [ 13.660569][ T82] #2: ffffffffb4799d38 (console_srcu){....}-{0:0}, at: console_flush_one_record+0x106/0x710 [ 13.660573][ T82] #3: ffffffffb4689660 (console_owner){....}-{0:0}, at: console_lock_spinning_enable+0x40/0x60 [ 13.660576][ T82] #4: ffffffffb4689560 (printk_legacy_map-wait-type-override){....}-{3:3}, at: console_emit_next_record+0x202/0x4f0 [ 13.660580][ T82] irq event stamp: 403038 [ 13.660581][ T82] hardirqs last enabled at (403037): [] __down_trylock_console_sem+0x86/0xa0 [ 13.660583][ T82] hardirqs last disabled at (403038): [] console_emit_next_record+0x3f8/0x4f0 [ 13.660585][ T82] softirqs last enabled at (402974): [] netlink_release+0x17b/0xcf0 [ 13.660589][ T82] softirqs last disabled at (402972): [] netlink_release+0xd2/0xcf0 [ 13.660592][ T82] Preemption disabled at: [ 13.660593][ T82] [<0000000000000000>] 0x0 [ 13.660600][ T82] CPU: 3 UID: 0 PID: 82 Comm: (udev-worker) Tainted: G W 7.2.0-virtme #1 PREEMPT(full) [ 13.660603][ T82] Tainted: [W]=WARN [ 13.660604][ T82] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011 [ 13.660606][ T82] Call Trace: [ 13.660608][ T82] [ 13.660609][ T82] dump_stack_lvl+0x6f/0xa0 [ 13.660616][ T82] __might_resched.cold+0x1fe/0x2c1 [ 13.660620][ T82] ? perf_trace_sched_switch+0x7c0/0x7c0 [ 13.660624][ T82] ? __kmalloc_noprof+0xdb/0x760 [ 13.660629][ T82] __kmalloc_noprof+0x443/0x760 [ 13.660631][ T82] ? alloc_buf.isra.0+0x4b/0x260 [ 13.660642][ T82] ? do_raw_spin_unlock+0x59/0x250 [ 13.660646][ T82] alloc_buf.isra.0+0x4b/0x260 [ 13.660650][ T82] put_chars+0x1e1/0x2f0 [ 13.660653][ T82] ? __send_to_port+0x420/0x420 [ 13.660654][ T82] ? printk_get_next_message+0x2fe/0x7d0 [ 13.660657][ T82] ? rcu_read_lock_any_held+0x3c/0x90 [ 13.660661][ T82] ? validate_chain+0x38b/0xc20 [ 13.660665][ T82] hvc_console_print+0x292/0x780 [ 13.660668][ T82] ? __lock_acquire+0x518/0xc20 [ 13.660669][ T82] ? __lock_acquire+0x518/0xc20 [ 13.660673][ T82] ? hvc_write+0x3a0/0x3a0 [ 13.660677][ T82] ? rcu_is_watching+0x16/0xd0 [ 13.660679][ T82] ? lock_acquire+0x13c/0x160 [ 13.660683][ T82] console_emit_next_record+0x252/0x4f0 [ 13.660687][ T82] ? devkmsg_read+0x4e0/0x4e0 [ 13.660691][ T82] ? rcu_is_watching+0x16/0xd0 [ 13.660693][ T82] ? lock_acquire+0x13c/0x160 [ 13.660697][ T82] console_flush_one_record+0x46f/0x710 [ 13.660701][ T82] ? console_emit_next_record+0x4f0/0x4f0 [ 13.660702][ T82] ? __lock_acquire+0x518/0xc20 [ 13.660707][ T82] console_unlock+0xee/0x1f0 [ 13.660710][ T82] ? console_flush_one_record+0x710/0x710 [ 13.660711][ T82] ? rcu_is_watching+0x16/0xd0 [ 13.660713][ T82] ? lock_acquire+0x60/0x160 [ 13.660717][ T82] ? __down_trylock_console_sem+0x5e/0xa0 [ 13.660718][ T82] ? vprintk_emit+0x320/0x3e0 [ 13.660721][ T82] vprintk_emit+0x37c/0x3e0 [ 13.660725][ T82] ? wake_up_klogd_work_func+0x90/0x90 [ 13.660728][ T82] ? __lock_acquire+0x518/0xc20 [ 13.660731][ T82] _printk+0xc7/0x100 [ 13.660735][ T82] ? snapshot_read.cold+0x21/0x21 [ 13.660738][ T82] ? do_raw_spin_lock+0x131/0x280 [ 13.660740][ T82] ? __rwlock_init+0x150/0x150 [ 13.660744][ T82] ? do_raw_spin_lock+0x131/0x280 [ 13.660747][ T82] do_exit.cold+0x82/0x9c [ 13.660750][ T82] ? exit_notify+0x890/0x890 [ 13.660752][ T82] ? __lock_release.isra.0+0x69/0x1a0 [ 13.660755][ T82] ? rcu_is_watching+0x16/0xd0 [ 13.660759][ T82] do_group_exit+0xb8/0x370 [ 13.660762][ T82] __x64_sys_exit_group+0x3c/0x50 [ 13.660764][ T82] x64_sys_call+0x1567/0x1570 [ 13.660767][ T82] do_syscall_64+0xff/0x530 [ 13.660769][ T82] ? irq_exit_rcu+0x1a/0x30 [ 13.660773][ T82] entry_SYSCALL_64_after_hwframe+0x4b/0x53 [ 13.660775][ T82] RIP: 0033:0x7fe104ecd1b8 [ 13.660777][ T82] Code: Unable to access opcode bytes at 0x7fe104ecd18e. [ 13.660779][ T82] RSP: 002b:00007ffe6a18a488 EFLAGS: 00000256 ORIG_RAX: 00000000000000e7 [ 13.660781][ T82] RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 00007fe104ecd1b8 [ 13.660782][ T82] RDX: 0000000000000000 RSI: fffffffffffffe90 RDI: 0000000000000000 [ 13.660783][ T82] RBP: 00007ffe6a18a610 R08: 000056361bbdef48 R09: 0000000000000000 [ 13.660784][ T82] R10: 0000000000000000 R11: 0000000000000256 R12: 0000000000000000 [ 13.660785][ T82] R13: 00007fe10472b050 R14: 00007fe1053fed9e R15: 000056361bd226c0 [ 13.660791][ T82]