[ 13.889730][ T84] (udev-worker) (84) used greatest stack depth: 22696 bytes left [ 13.889749][ T84] BUG: sleeping function called from invalid context at ./include/linux/sched/mm.h:322 [ 13.889751][ T84] in_atomic(): 1, irqs_disabled(): 1, non_block: 0, pid: 84, name: (udev-worker) [ 13.889752][ T84] preempt_count: 2, expected: 0 [ 13.889753][ T84] RCU nest depth: 0, expected: 0 [ 13.889754][ T84] locks held by (udev-worker)/84: 5, last CPU#0: [ 13.889757][ T84] #0: ffffffffa7a027b8 (low_water_lock){+.+.}-{3:3}, at: do_exit+0x887/0xdc0 [ 13.889770][ T84] #1: ffffffffa7b69cc0 (console_lock){+.+.}-{0:0}, at: vprintk_emit+0x320/0x3e0 [ 13.889775][ T84] #2: ffffffffa7b69d38 (console_srcu){....}-{0:0}, at: console_flush_one_record+0x106/0x710 [ 13.889779][ T84] #3: ffffffffa7a89660 (console_owner){....}-{0:0}, at: console_lock_spinning_enable+0x40/0x60 [ 13.889782][ T84] #4: ffffffffa7a89560 (printk_legacy_map-wait-type-override){....}-{3:3}, at: console_emit_next_record+0x1df/0x4c0 [ 13.889786][ T84] irq event stamp: 498180 [ 13.889787][ T84] hardirqs last enabled at (498179): [] __down_trylock_console_sem+0x86/0xa0 [ 13.889789][ T84] hardirqs last disabled at (498180): [] console_emit_next_record+0x3d4/0x4c0 [ 13.889791][ T84] softirqs last enabled at (498114): [] netlink_release+0x17b/0xcf0 [ 13.889795][ T84] softirqs last disabled at (498112): [] netlink_release+0xd2/0xcf0 [ 13.889798][ T84] Preemption disabled at: [ 13.889798][ T84] [<0000000000000000>] 0x0 [ 13.889805][ T84] CPU: 0 UID: 0 PID: 84 Comm: (udev-worker) Tainted: G W 7.2.0-virtme #1 PREEMPT(full) [ 13.889809][ T84] Tainted: [W]=WARN [ 13.889810][ T84] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011 [ 13.889812][ T84] Call Trace: [ 13.889813][ T84] [ 13.889815][ T84] dump_stack_lvl+0x6f/0xa0 [ 13.889821][ T84] __might_resched.cold+0x1fe/0x2c1 [ 13.889827][ T84] ? perf_trace_sched_switch+0x7c0/0x7c0 [ 13.889831][ T84] ? __kmalloc_noprof+0xdb/0x760 [ 13.889836][ T84] __kmalloc_noprof+0x443/0x760 [ 13.889838][ T84] ? alloc_buf.isra.0+0x4b/0x260 [ 13.889844][ T84] ? do_raw_spin_unlock+0x59/0x250 [ 13.889846][ T84] alloc_buf.isra.0+0x4b/0x260 [ 13.889850][ T84] put_chars+0x1e1/0x2f0 [ 13.889853][ T84] ? __send_to_port+0x420/0x420 [ 13.889855][ T84] ? rcu_lockdep_current_cpu_online+0x3f/0x1b0 [ 13.889859][ T84] ? validate_chain+0x38b/0xc20 [ 13.889864][ T84] hvc_console_print+0x292/0x780 [ 13.889871][ T84] ? hvc_write+0x3a0/0x3a0 [ 13.889873][ T84] ? rcu_is_watching+0x16/0xd0 [ 13.889876][ T84] ? lock_acquire+0x13c/0x160 [ 13.889879][ T84] console_emit_next_record+0x22f/0x4c0 [ 13.889883][ T84] ? devkmsg_read+0x4b0/0x4b0 [ 13.889884][ T84] ? console_flush_one_record+0x106/0x710 [ 13.889887][ T84] ? rcu_is_watching+0x16/0xd0 [ 13.889889][ T84] ? lock_acquire+0x13c/0x160 [ 13.889893][ T84] console_flush_one_record+0x46f/0x710 [ 13.889897][ T84] ? console_emit_next_record+0x4c0/0x4c0 [ 13.889898][ T84] ? __lock_acquire+0x518/0xc20 [ 13.889903][ T84] console_unlock+0xee/0x1f0 [ 13.889905][ T84] ? console_flush_one_record+0x710/0x710 [ 13.889907][ T84] ? rcu_is_watching+0x16/0xd0 [ 13.889909][ T84] ? lock_acquire+0x60/0x160 [ 13.889912][ T84] ? __down_trylock_console_sem+0x5e/0xa0 [ 13.889914][ T84] ? vprintk_emit+0x320/0x3e0 [ 13.889917][ T84] vprintk_emit+0x37c/0x3e0 [ 13.889920][ T84] ? wake_up_klogd_work_func+0x90/0x90 [ 13.889924][ T84] ? __lock_acquire+0x518/0xc20 [ 13.889927][ T84] _printk+0xc7/0x100 [ 13.889930][ T84] ? snapshot_read.cold+0x21/0x21 [ 13.889933][ T84] ? do_raw_spin_lock+0x131/0x280 [ 13.889935][ T84] ? __rwlock_init+0x150/0x150 [ 13.889939][ T84] ? do_raw_spin_lock+0x131/0x280 [ 13.889941][ T84] do_exit.cold+0x82/0x9c [ 13.889945][ T84] ? exit_notify+0x890/0x890 [ 13.889947][ T84] ? __lock_release.isra.0+0x69/0x1a0 [ 13.889949][ T84] ? rcu_is_watching+0x16/0xd0 [ 13.889953][ T84] do_group_exit+0xb8/0x370 [ 13.889956][ T84] __x64_sys_exit_group+0x3c/0x50 [ 13.889959][ T84] x64_sys_call+0x1567/0x1570 [ 13.889961][ T84] do_syscall_64+0xff/0x530 [ 13.889965][ T84] ? exc_page_fault+0xee/0x100 [ 13.889968][ T84] entry_SYSCALL_64_after_hwframe+0x4b/0x53 [ 13.889970][ T84] RIP: 0033:0x7f5c312691b8 [ 13.889972][ T84] Code: Unable to access opcode bytes at 0x7f5c3126918e. [ 13.889973][ T84] RSP: 002b:00007ffddcd94ad8 EFLAGS: 00000256 ORIG_RAX: 00000000000000e7 [ 13.889976][ T84] RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 00007f5c312691b8 [ 13.889977][ T84] RDX: 0000000000000000 RSI: fffffffffffffe90 RDI: 0000000000000000 [ 13.889978][ T84] RBP: 00007ffddcd94c60 R08: 000055b386f489b8 R09: 0000000000000000 [ 13.889979][ T84] R10: 0000000000000000 R11: 0000000000000256 R12: 0000000000000000 [ 13.889980][ T84] R13: 00007f5c30ac7050 R14: 00007f5c3179ad9e R15: 000055b386f42550 [ 13.889987][ T84]