[ 16.084008][ T86] (udev-worker) (86) used greatest stack depth: 22696 bytes left [ 16.084024][ T86] BUG: sleeping function called from invalid context at ./include/linux/sched/mm.h:322 [ 16.084026][ T86] in_atomic(): 1, irqs_disabled(): 1, non_block: 0, pid: 86, name: (udev-worker) [ 16.084027][ T86] preempt_count: 2, expected: 0 [ 16.084028][ T86] RCU nest depth: 0, expected: 0 [ 16.084029][ T86] locks held by (udev-worker)/86: 5, last CPU#2: [ 16.084031][ T86] #0: ffffffffb74027b8 (low_water_lock){+.+.}-{3:3}, at: do_exit+0x887/0xdc0 [ 16.084043][ T86] #1: ffffffffb7599cc0 (console_lock){+.+.}-{0:0}, at: vprintk_emit+0x320/0x3e0 [ 16.084049][ T86] #2: ffffffffb7599d38 (console_srcu){....}-{0:0}, at: console_flush_one_record+0x106/0x710 [ 16.084052][ T86] #3: ffffffffb7489660 (console_owner){....}-{0:0}, at: console_lock_spinning_enable+0x40/0x60 [ 16.084055][ T86] #4: ffffffffb7489560 (printk_legacy_map-wait-type-override){....}-{3:3}, at: console_emit_next_record+0x202/0x4f0 [ 16.084059][ T86] irq event stamp: 875174 [ 16.084060][ T86] hardirqs last enabled at (875173): [] __down_trylock_console_sem+0x86/0xa0 [ 16.084062][ T86] hardirqs last disabled at (875174): [] console_emit_next_record+0x3f8/0x4f0 [ 16.084064][ T86] softirqs last enabled at (875108): [] netlink_release+0x17b/0xcf0 [ 16.084068][ T86] softirqs last disabled at (875106): [] netlink_release+0xd2/0xcf0 [ 16.084070][ T86] Preemption disabled at: [ 16.084071][ T86] [<0000000000000000>] 0x0 [ 16.084077][ T86] CPU: 2 UID: 0 PID: 86 Comm: (udev-worker) Tainted: G W 7.2.0-virtme #1 PREEMPT(full) [ 16.084081][ T86] Tainted: [W]=WARN [ 16.084082][ T86] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011 [ 16.084083][ T86] Call Trace: [ 16.084085][ T86] [ 16.084086][ T86] dump_stack_lvl+0x6f/0xa0 [ 16.084092][ T86] __might_resched.cold+0x1fe/0x2c1 [ 16.084097][ T86] ? perf_trace_sched_switch+0x7c0/0x7c0 [ 16.084100][ T86] ? __kmalloc_noprof+0xdb/0x760 [ 16.084105][ T86] __kmalloc_noprof+0x443/0x760 [ 16.084107][ T86] ? alloc_buf.isra.0+0x4b/0x260 [ 16.084112][ T86] ? do_raw_spin_unlock+0x59/0x250 [ 16.084114][ T86] alloc_buf.isra.0+0x4b/0x260 [ 16.084117][ T86] put_chars+0x1e1/0x2f0 [ 16.084120][ T86] ? __send_to_port+0x420/0x420 [ 16.084121][ T86] ? printk_get_next_message+0x2fe/0x7d0 [ 16.084124][ T86] ? rcu_read_lock_any_held+0x3c/0x90 [ 16.084127][ T86] ? validate_chain+0x38b/0xc20 [ 16.084131][ T86] hvc_console_print+0x292/0x780 [ 16.084134][ T86] ? __lock_acquire+0x518/0xc20 [ 16.084135][ T86] ? __lock_acquire+0x518/0xc20 [ 16.084139][ T86] ? hvc_write+0x3a0/0x3a0 [ 16.084142][ T86] ? rcu_is_watching+0x16/0xd0 [ 16.084145][ T86] ? lock_acquire+0x13c/0x160 [ 16.084148][ T86] console_emit_next_record+0x252/0x4f0 [ 16.084152][ T86] ? devkmsg_read+0x4e0/0x4e0 [ 16.084156][ T86] ? rcu_is_watching+0x16/0xd0 [ 16.084158][ T86] ? lock_acquire+0x13c/0x160 [ 16.084161][ T86] console_flush_one_record+0x46f/0x710 [ 16.084165][ T86] ? console_emit_next_record+0x4f0/0x4f0 [ 16.084167][ T86] ? __lock_acquire+0x518/0xc20 [ 16.084171][ T86] console_unlock+0xee/0x1f0 [ 16.084174][ T86] ? console_flush_one_record+0x710/0x710 [ 16.084175][ T86] ? rcu_is_watching+0x16/0xd0 [ 16.084177][ T86] ? lock_acquire+0x60/0x160 [ 16.084180][ T86] ? __down_trylock_console_sem+0x5e/0xa0 [ 16.084182][ T86] ? vprintk_emit+0x320/0x3e0 [ 16.084185][ T86] vprintk_emit+0x37c/0x3e0 [ 16.084188][ T86] ? wake_up_klogd_work_func+0x90/0x90 [ 16.084191][ T86] ? __lock_acquire+0x518/0xc20 [ 16.084194][ T86] _printk+0xc7/0x100 [ 16.084198][ T86] ? snapshot_read.cold+0x21/0x21 [ 16.084201][ T86] ? do_raw_spin_lock+0x131/0x280 [ 16.084203][ T86] ? __rwlock_init+0x150/0x150 [ 16.084206][ T86] ? do_raw_spin_lock+0x131/0x280 [ 16.084209][ T86] do_exit.cold+0x82/0x9c [ 16.084212][ T86] ? exit_notify+0x890/0x890 [ 16.084214][ T86] ? __lock_release.isra.0+0x69/0x1a0 [ 16.084216][ T86] ? rcu_is_watching+0x16/0xd0 [ 16.084220][ T86] do_group_exit+0xb8/0x370 [ 16.084223][ T86] __x64_sys_exit_group+0x3c/0x50 [ 16.084225][ T86] x64_sys_call+0x1567/0x1570 [ 16.084227][ T86] do_syscall_64+0xff/0x530 [ 16.084230][ T86] ? irq_exit_rcu+0x1a/0x30 [ 16.084234][ T86] entry_SYSCALL_64_after_hwframe+0x4b/0x53 [ 16.084236][ T86] RIP: 0033:0x7f46334e91b8 [ 16.084238][ T86] Code: Unable to access opcode bytes at 0x7f46334e918e. [ 16.084239][ T86] RSP: 002b:00007ffe273ee518 EFLAGS: 00000256 ORIG_RAX: 00000000000000e7 [ 16.084241][ T86] RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 00007f46334e91b8 [ 16.084243][ T86] RDX: 0000000000000000 RSI: fffffffffffffe90 RDI: 0000000000000000 [ 16.084243][ T86] RBP: 00007ffe273ee6a0 R08: 000055f895b5b718 R09: 0000000000000000 [ 16.084244][ T86] R10: 0000000000000000 R11: 0000000000000256 R12: 0000000000000000 [ 16.084245][ T86] R13: 00007f4632d47050 R14: 00007f4633a1ad9e R15: 000055f895b52890 [ 16.084251][ T86]