[ 12.640608][ T84] (udev-worker) (84) used greatest stack depth: 23776 bytes left [ 12.640625][ T84] BUG: sleeping function called from invalid context at ./include/linux/sched/mm.h:322 [ 12.640627][ T84] in_atomic(): 1, irqs_disabled(): 1, non_block: 0, pid: 84, name: (udev-worker) [ 12.640629][ T84] preempt_count: 2, expected: 0 [ 12.640630][ T84] RCU nest depth: 0, expected: 0 [ 12.640631][ T84] locks held by (udev-worker)/84: 5, last CPU#3: [ 12.640633][ T84] #0: ffffffffab2027b8 (low_water_lock){+.+.}-{3:3}, at: do_exit+0x887/0xdc0 [ 12.640645][ T84] #1: ffffffffab399dc0 (console_lock){+.+.}-{0:0}, at: vprintk_emit+0x320/0x3e0 [ 12.640651][ T84] #2: ffffffffab399e38 (console_srcu){....}-{0:0}, at: console_flush_one_record+0x106/0x710 [ 12.640655][ T84] #3: ffffffffab289760 (console_owner){....}-{0:0}, at: console_lock_spinning_enable+0x40/0x60 [ 12.640660][ T84] #4: ffffffffab289660 (printk_legacy_map-wait-type-override){....}-{3:3}, at: console_emit_next_record+0x202/0x4f0 [ 12.640664][ T84] irq event stamp: 367218 [ 12.640665][ T84] hardirqs last enabled at (367217): [] __down_trylock_console_sem+0x86/0xa0 [ 12.640667][ T84] hardirqs last disabled at (367218): [] console_emit_next_record+0x3f8/0x4f0 [ 12.640670][ T84] softirqs last enabled at (367154): [] netlink_release+0x17b/0xcf0 [ 12.640674][ T84] softirqs last disabled at (367152): [] netlink_release+0xd2/0xcf0 [ 12.640677][ T84] Preemption disabled at: [ 12.640677][ T84] [<0000000000000000>] 0x0 [ 12.640684][ T84] CPU: 3 UID: 0 PID: 84 Comm: (udev-worker) Tainted: G W 7.2.0-virtme #1 PREEMPT(full) [ 12.640688][ T84] Tainted: [W]=WARN [ 12.640689][ T84] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011 [ 12.640691][ T84] Call Trace: [ 12.640692][ T84] [ 12.640693][ T84] dump_stack_lvl+0x6f/0xa0 [ 12.640700][ T84] __might_resched.cold+0x1fe/0x2c1 [ 12.640704][ T84] ? perf_trace_sched_switch+0x7c0/0x7c0 [ 12.640709][ T84] ? __kmalloc_noprof+0xdb/0x760 [ 12.640714][ T84] __kmalloc_noprof+0x443/0x760 [ 12.640717][ T84] ? alloc_buf.isra.0+0x4b/0x260 [ 12.640723][ T84] ? do_raw_spin_unlock+0x59/0x250 [ 12.640726][ T84] alloc_buf.isra.0+0x4b/0x260 [ 12.640730][ T84] put_chars+0x1e1/0x2f0 [ 12.640733][ T84] ? __send_to_port+0x420/0x420 [ 12.640735][ T84] ? printk_get_next_message+0x2fe/0x7d0 [ 12.640739][ T84] ? rcu_read_lock_any_held+0x3c/0x90 [ 12.640742][ T84] ? validate_chain+0x38b/0xc20 [ 12.640746][ T84] hvc_console_print+0x292/0x780 [ 12.640750][ T84] ? __lock_acquire+0x518/0xc20 [ 12.640752][ T84] ? __lock_acquire+0x518/0xc20 [ 12.640756][ T84] ? hvc_write+0x3a0/0x3a0 [ 12.640760][ T84] ? rcu_is_watching+0x16/0xd0 [ 12.640764][ T84] ? lock_acquire+0x13c/0x160 [ 12.640768][ T84] console_emit_next_record+0x252/0x4f0 [ 12.640772][ T84] ? devkmsg_read+0x4e0/0x4e0 [ 12.640777][ T84] ? rcu_is_watching+0x16/0xd0 [ 12.640779][ T84] ? lock_acquire+0x13c/0x160 [ 12.640783][ T84] console_flush_one_record+0x46f/0x710 [ 12.640787][ T84] ? console_emit_next_record+0x4f0/0x4f0 [ 12.640789][ T84] ? __lock_acquire+0x518/0xc20 [ 12.640795][ T84] console_unlock+0xee/0x1f0 [ 12.640798][ T84] ? console_flush_one_record+0x710/0x710 [ 12.640800][ T84] ? rcu_is_watching+0x16/0xd0 [ 12.640803][ T84] ? lock_acquire+0xa0/0x160 [ 12.640807][ T84] ? __down_trylock_console_sem+0x5e/0xa0 [ 12.640808][ T84] ? vprintk_emit+0x320/0x3e0 [ 12.640812][ T84] vprintk_emit+0x37c/0x3e0 [ 12.640816][ T84] ? wake_up_klogd_work_func+0x90/0x90 [ 12.640819][ T84] ? __lock_acquire+0x518/0xc20 [ 12.640823][ T84] _printk+0xc7/0x100 [ 12.640827][ T84] ? snapshot_read.cold+0x21/0x21 [ 12.640830][ T84] ? do_raw_spin_lock+0x131/0x280 [ 12.640833][ T84] ? __rwlock_init+0x150/0x150 [ 12.640840][ T84] ? do_raw_spin_lock+0x131/0x280 [ 12.640843][ T84] do_exit.cold+0x82/0x9c [ 12.640847][ T84] ? exit_notify+0x890/0x890 [ 12.640848][ T84] ? __lock_release.isra.0+0x69/0x1a0 [ 12.640851][ T84] ? rcu_is_watching+0x16/0xd0 [ 12.640855][ T84] do_group_exit+0xb8/0x370 [ 12.640858][ T84] __x64_sys_exit_group+0x3c/0x50 [ 12.640860][ T84] x64_sys_call+0x1567/0x1570 [ 12.640862][ T84] do_syscall_64+0xff/0x530 [ 12.640866][ T84] ? irq_exit_rcu+0x1a/0x30 [ 12.640869][ T84] entry_SYSCALL_64_after_hwframe+0x4b/0x53 [ 12.640872][ T84] RIP: 0033:0x7f17c76981b8 [ 12.640874][ T84] Code: Unable to access opcode bytes at 0x7f17c769818e. [ 12.640875][ T84] RSP: 002b:00007ffcc4fa42a8 EFLAGS: 00000256 ORIG_RAX: 00000000000000e7 [ 12.640878][ T84] RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 00007f17c76981b8 [ 12.640879][ T84] RDX: 0000000000000000 RSI: fffffffffffffe90 RDI: 0000000000000000 [ 12.640880][ T84] RBP: 00007ffcc4fa4430 R08: 000055a2cff65228 R09: 0000000000000000 [ 12.640881][ T84] R10: 0000000000000000 R11: 0000000000000256 R12: 0000000000000000 [ 12.640882][ T84] R13: 00007f17c6ef6050 R14: 00007f17c7bc9d9e R15: 000055a2cff61e30 [ 12.640889][ T84]