[ 13.354310][ T90] (udev-worker) (90) used greatest stack depth: 22696 bytes left [ 13.354329][ T90] BUG: sleeping function called from invalid context at ./include/linux/sched/mm.h:322 [ 13.354331][ T90] in_atomic(): 1, irqs_disabled(): 1, non_block: 0, pid: 90, name: (udev-worker) [ 13.354333][ T90] preempt_count: 2, expected: 0 [ 13.354333][ T90] RCU nest depth: 0, expected: 0 [ 13.354335][ T90] locks held by (udev-worker)/90: 5, last CPU#1: [ 13.354337][ T90] #0: ffffffff8fa027b8 (low_water_lock){+.+.}-{3:3}, at: do_exit+0x887/0xdc0 [ 13.354349][ T90] #1: ffffffff8fb99dc0 (console_lock){+.+.}-{0:0}, at: vprintk_emit+0x320/0x3e0 [ 13.354355][ T90] #2: ffffffff8fb99e38 (console_srcu){....}-{0:0}, at: console_flush_one_record+0x106/0x710 [ 13.354359][ T90] #3: ffffffff8fa89760 (console_owner){....}-{0:0}, at: console_lock_spinning_enable+0x40/0x60 [ 13.354363][ T90] #4: ffffffff8fa89660 (printk_legacy_map-wait-type-override){....}-{3:3}, at: console_emit_next_record+0x202/0x4f0 [ 13.354367][ T90] irq event stamp: 402094 [ 13.354368][ T90] hardirqs last enabled at (402093): [] __down_trylock_console_sem+0x86/0xa0 [ 13.354371][ T90] hardirqs last disabled at (402094): [] console_emit_next_record+0x3f8/0x4f0 [ 13.354373][ T90] softirqs last enabled at (402030): [] netlink_release+0x17b/0xcf0 [ 13.354377][ T90] softirqs last disabled at (402028): [] netlink_release+0xd2/0xcf0 [ 13.354380][ T90] Preemption disabled at: [ 13.354381][ T90] [<0000000000000000>] 0x0 [ 13.354389][ T90] CPU: 1 UID: 0 PID: 90 Comm: (udev-worker) Tainted: G W 7.2.0-virtme #1 PREEMPT(full) [ 13.354392][ T90] Tainted: [W]=WARN [ 13.354393][ T90] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011 [ 13.354395][ T90] Call Trace: [ 13.354397][ T90] [ 13.354398][ T90] dump_stack_lvl+0x6f/0xa0 [ 13.354404][ T90] __might_resched.cold+0x1fe/0x2c1 [ 13.354409][ T90] ? perf_trace_sched_switch+0x7c0/0x7c0 [ 13.354414][ T90] ? __kmalloc_noprof+0xdb/0x760 [ 13.354420][ T90] __kmalloc_noprof+0x443/0x760 [ 13.354422][ T90] ? alloc_buf.isra.0+0x4b/0x260 [ 13.354429][ T90] ? do_raw_spin_unlock+0x59/0x250 [ 13.354431][ T90] alloc_buf.isra.0+0x4b/0x260 [ 13.354435][ T90] put_chars+0x1e1/0x2f0 [ 13.354438][ T90] ? __send_to_port+0x420/0x420 [ 13.354440][ T90] ? printk_get_next_message+0x2fe/0x7d0 [ 13.354444][ T90] ? rcu_read_lock_any_held+0x3c/0x90 [ 13.354447][ T90] ? validate_chain+0x38b/0xc20 [ 13.354451][ T90] hvc_console_print+0x292/0x780 [ 13.354455][ T90] ? __lock_acquire+0x518/0xc20 [ 13.354457][ T90] ? __lock_acquire+0x518/0xc20 [ 13.354461][ T90] ? hvc_write+0x3a0/0x3a0 [ 13.354465][ T90] ? rcu_is_watching+0x16/0xd0 [ 13.354469][ T90] ? lock_acquire+0x13c/0x160 [ 13.354473][ T90] console_emit_next_record+0x252/0x4f0 [ 13.354477][ T90] ? devkmsg_read+0x4e0/0x4e0 [ 13.354482][ T90] ? rcu_is_watching+0x16/0xd0 [ 13.354484][ T90] ? lock_acquire+0x13c/0x160 [ 13.354489][ T90] console_flush_one_record+0x46f/0x710 [ 13.354496][ T90] ? console_emit_next_record+0x4f0/0x4f0 [ 13.354499][ T90] ? __lock_acquire+0x518/0xc20 [ 13.354504][ T90] console_unlock+0xee/0x1f0 [ 13.354507][ T90] ? console_flush_one_record+0x710/0x710 [ 13.354509][ T90] ? rcu_is_watching+0x16/0xd0 [ 13.354512][ T90] ? lock_acquire+0xa0/0x160 [ 13.354516][ T90] ? __down_trylock_console_sem+0x5e/0xa0 [ 13.354517][ T90] ? vprintk_emit+0x320/0x3e0 [ 13.354521][ T90] vprintk_emit+0x37c/0x3e0 [ 13.354525][ T90] ? wake_up_klogd_work_func+0x90/0x90 [ 13.354529][ T90] ? __lock_acquire+0x518/0xc20 [ 13.354533][ T90] _printk+0xc7/0x100 [ 13.354536][ T90] ? snapshot_read.cold+0x21/0x21 [ 13.354539][ T90] ? do_raw_spin_lock+0x131/0x280 [ 13.354542][ T90] ? __rwlock_init+0x150/0x150 [ 13.354546][ T90] ? do_raw_spin_lock+0x131/0x280 [ 13.354549][ T90] do_exit.cold+0x82/0x9c [ 13.354553][ T90] ? exit_notify+0x890/0x890 [ 13.354554][ T90] ? __lock_release.isra.0+0x69/0x1a0 [ 13.354557][ T90] ? rcu_is_watching+0x16/0xd0 [ 13.354562][ T90] do_group_exit+0xb8/0x370 [ 13.354565][ T90] __x64_sys_exit_group+0x3c/0x50 [ 13.354566][ T90] x64_sys_call+0x1567/0x1570 [ 13.354569][ T90] do_syscall_64+0xff/0x530 [ 13.354572][ T90] ? exc_page_fault+0xee/0x100 [ 13.354576][ T90] entry_SYSCALL_64_after_hwframe+0x4b/0x53 [ 13.354578][ T90] RIP: 0033:0x7f94efd3b1b8 [ 13.354580][ T90] Code: Unable to access opcode bytes at 0x7f94efd3b18e. [ 13.354581][ T90] RSP: 002b:00007ffe0a644af8 EFLAGS: 00000256 ORIG_RAX: 00000000000000e7 [ 13.354584][ T90] RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 00007f94efd3b1b8 [ 13.354585][ T90] RDX: 0000000000000000 RSI: fffffffffffffe90 RDI: 0000000000000000 [ 13.354586][ T90] RBP: 00007ffe0a644c80 R08: 0000561aa3f73798 R09: 0000000000000000 [ 13.354587][ T90] R10: 0000000000000000 R11: 0000000000000256 R12: 0000000000000000 [ 13.354588][ T90] R13: 00007f94ef599050 R14: 00007f94f026cd9e R15: 0000561aa3e1fd20 [ 13.354595][ T90]