[ 13.475388][ T83] (udev-worker) (83) used greatest stack depth: 22696 bytes left [ 13.475408][ T83] BUG: sleeping function called from invalid context at ./include/linux/sched/mm.h:322 [ 13.475411][ T83] in_atomic(): 1, irqs_disabled(): 1, non_block: 0, pid: 83, name: (udev-worker) [ 13.475412][ T83] preempt_count: 2, expected: 0 [ 13.475413][ T83] RCU nest depth: 0, expected: 0 [ 13.475414][ T83] locks held by (udev-worker)/83: 5, last CPU#3: [ 13.475416][ T83] #0: ffffffff8de027b8 (low_water_lock){+.+.}-{3:3}, at: do_exit+0x887/0xdc0 [ 13.475432][ T83] #1: ffffffff8df69cc0 (console_lock){+.+.}-{0:0}, at: vprintk_emit+0x320/0x3e0 [ 13.475438][ T83] #2: ffffffff8df69d38 (console_srcu){....}-{0:0}, at: console_flush_one_record+0x106/0x710 [ 13.475442][ T83] #3: ffffffff8de89660 (console_owner){....}-{0:0}, at: console_lock_spinning_enable+0x40/0x60 [ 13.475445][ T83] #4: ffffffff8de89560 (printk_legacy_map-wait-type-override){....}-{3:3}, at: console_emit_next_record+0x1df/0x4c0 [ 13.475449][ T83] irq event stamp: 495062 [ 13.475450][ T83] hardirqs last enabled at (495061): [] __down_trylock_console_sem+0x86/0xa0 [ 13.475453][ T83] hardirqs last disabled at (495062): [] console_emit_next_record+0x3d4/0x4c0 [ 13.475455][ T83] softirqs last enabled at (494998): [] netlink_release+0x17b/0xcf0 [ 13.475459][ T83] softirqs last disabled at (494996): [] netlink_release+0xd2/0xcf0 [ 13.475462][ T83] Preemption disabled at: [ 13.475462][ T83] [<0000000000000000>] 0x0 [ 13.475469][ T83] CPU: 3 UID: 0 PID: 83 Comm: (udev-worker) Tainted: G W 7.2.0-virtme #1 PREEMPT(full) [ 13.475473][ T83] Tainted: [W]=WARN [ 13.475474][ T83] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011 [ 13.475476][ T83] Call Trace: [ 13.475477][ T83] [ 13.475479][ T83] dump_stack_lvl+0x6f/0xa0 [ 13.475485][ T83] __might_resched.cold+0x1fe/0x2c1 [ 13.475490][ T83] ? perf_trace_sched_switch+0x7c0/0x7c0 [ 13.475494][ T83] ? __kmalloc_noprof+0xdb/0x760 [ 13.475499][ T83] __kmalloc_noprof+0x443/0x760 [ 13.475501][ T83] ? alloc_buf.isra.0+0x4b/0x260 [ 13.475508][ T83] ? do_raw_spin_unlock+0x59/0x250 [ 13.475511][ T83] alloc_buf.isra.0+0x4b/0x260 [ 13.475514][ T83] put_chars+0x1e1/0x2f0 [ 13.475518][ T83] ? __send_to_port+0x420/0x420 [ 13.475520][ T83] ? rcu_lockdep_current_cpu_online+0x3f/0x1b0 [ 13.475525][ T83] ? validate_chain+0x38b/0xc20 [ 13.475530][ T83] hvc_console_print+0x292/0x780 [ 13.475537][ T83] ? hvc_write+0x3a0/0x3a0 [ 13.475540][ T83] ? rcu_is_watching+0x16/0xd0 [ 13.475542][ T83] ? lock_acquire+0x13c/0x160 [ 13.475546][ T83] console_emit_next_record+0x22f/0x4c0 [ 13.475550][ T83] ? devkmsg_read+0x4b0/0x4b0 [ 13.475552][ T83] ? console_flush_one_record+0x106/0x710 [ 13.475555][ T83] ? rcu_is_watching+0x16/0xd0 [ 13.475557][ T83] ? lock_acquire+0x13c/0x160 [ 13.475561][ T83] console_flush_one_record+0x46f/0x710 [ 13.475565][ T83] ? console_emit_next_record+0x4c0/0x4c0 [ 13.475566][ T83] ? __lock_acquire+0x518/0xc20 [ 13.475572][ T83] console_unlock+0xee/0x1f0 [ 13.475574][ T83] ? console_flush_one_record+0x710/0x710 [ 13.475576][ T83] ? rcu_is_watching+0x16/0xd0 [ 13.475578][ T83] ? lock_acquire+0x60/0x160 [ 13.475582][ T83] ? __down_trylock_console_sem+0x5e/0xa0 [ 13.475583][ T83] ? vprintk_emit+0x320/0x3e0 [ 13.475587][ T83] vprintk_emit+0x37c/0x3e0 [ 13.475590][ T83] ? wake_up_klogd_work_func+0x90/0x90 [ 13.475594][ T83] ? __lock_acquire+0x518/0xc20 [ 13.475597][ T83] _printk+0xc7/0x100 [ 13.475601][ T83] ? snapshot_read.cold+0x21/0x21 [ 13.475604][ T83] ? do_raw_spin_lock+0x131/0x280 [ 13.475606][ T83] ? __rwlock_init+0x150/0x150 [ 13.475610][ T83] ? do_raw_spin_lock+0x131/0x280 [ 13.475612][ T83] do_exit.cold+0x82/0x9c [ 13.475616][ T83] ? exit_notify+0x890/0x890 [ 13.475618][ T83] ? __lock_release.isra.0+0x69/0x1a0 [ 13.475620][ T83] ? rcu_is_watching+0x16/0xd0 [ 13.475624][ T83] do_group_exit+0xb8/0x370 [ 13.475628][ T83] __x64_sys_exit_group+0x3c/0x50 [ 13.475631][ T83] x64_sys_call+0x1567/0x1570 [ 13.475633][ T83] do_syscall_64+0xff/0x530 [ 13.475637][ T83] ? exc_page_fault+0xee/0x100 [ 13.475640][ T83] entry_SYSCALL_64_after_hwframe+0x4b/0x53 [ 13.475642][ T83] RIP: 0033:0x7fa40e3cd1b8 [ 13.475645][ T83] Code: Unable to access opcode bytes at 0x7fa40e3cd18e. [ 13.475646][ T83] RSP: 002b:00007ffef59b1be8 EFLAGS: 00000256 ORIG_RAX: 00000000000000e7 [ 13.475649][ T83] RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 00007fa40e3cd1b8 [ 13.475650][ T83] RDX: 0000000000000000 RSI: fffffffffffffe90 RDI: 0000000000000000 [ 13.475651][ T83] RBP: 00007ffef59b1d70 R08: 00005642083852c8 R09: 0000000000000000 [ 13.475652][ T83] R10: 0000000000000000 R11: 0000000000000256 R12: 0000000000000000 [ 13.475653][ T83] R13: 00007fa40dc2b050 R14: 00007fa40e8fed9e R15: 00005642083825d0 [ 13.475661][ T83]