[ 11.694420][ T87] (udev-worker) (87) used greatest stack depth: 22696 bytes left [ 11.694437][ T87] BUG: sleeping function called from invalid context at ./include/linux/sched/mm.h:322 [ 11.694439][ T87] in_atomic(): 1, irqs_disabled(): 1, non_block: 0, pid: 87, name: (udev-worker) [ 11.694440][ T87] preempt_count: 2, expected: 0 [ 11.694441][ T87] RCU nest depth: 0, expected: 0 [ 11.694442][ T87] locks held by (udev-worker)/87: 5, last CPU#3: [ 11.694444][ T87] #0: ffffffff8d6027b8 (low_water_lock){+.+.}-{3:3}, at: do_exit+0x887/0xdc0 [ 11.694455][ T87] #1: ffffffff8d799dc0 (console_lock){+.+.}-{0:0}, at: vprintk_emit+0x320/0x3e0 [ 11.694461][ T87] #2: ffffffff8d799e38 (console_srcu){....}-{0:0}, at: console_flush_one_record+0x106/0x710 [ 11.694466][ T87] #3: ffffffff8d689760 (console_owner){....}-{0:0}, at: console_lock_spinning_enable+0x40/0x60 [ 11.694470][ T87] #4: ffffffff8d689660 (printk_legacy_map-wait-type-override){....}-{3:3}, at: console_emit_next_record+0x202/0x4f0 [ 11.694474][ T87] irq event stamp: 355288 [ 11.694475][ T87] hardirqs last enabled at (355287): [] __down_trylock_console_sem+0x86/0xa0 [ 11.694478][ T87] hardirqs last disabled at (355288): [] console_emit_next_record+0x3f8/0x4f0 [ 11.694479][ T87] softirqs last enabled at (355224): [] netlink_release+0x17b/0xcf0 [ 11.694484][ T87] softirqs last disabled at (355222): [] netlink_release+0xd2/0xcf0 [ 11.694486][ T87] Preemption disabled at: [ 11.694487][ T87] [<0000000000000000>] 0x0 [ 11.694493][ T87] CPU: 3 UID: 0 PID: 87 Comm: (udev-worker) Tainted: G W 7.2.0-virtme #1 PREEMPT(full) [ 11.694497][ T87] Tainted: [W]=WARN [ 11.694498][ T87] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011 [ 11.694499][ T87] Call Trace: [ 11.694501][ T87] [ 11.694502][ T87] dump_stack_lvl+0x6f/0xa0 [ 11.694509][ T87] __might_resched.cold+0x1fe/0x2c1 [ 11.694513][ T87] ? perf_trace_sched_switch+0x7c0/0x7c0 [ 11.694517][ T87] ? __kmalloc_noprof+0xdb/0x760 [ 11.694522][ T87] __kmalloc_noprof+0x443/0x760 [ 11.694525][ T87] ? alloc_buf.isra.0+0x4b/0x260 [ 11.694531][ T87] ? do_raw_spin_unlock+0x59/0x250 [ 11.694533][ T87] alloc_buf.isra.0+0x4b/0x260 [ 11.694537][ T87] put_chars+0x1e1/0x2f0 [ 11.694540][ T87] ? __send_to_port+0x420/0x420 [ 11.694542][ T87] ? printk_get_next_message+0x2fe/0x7d0 [ 11.694546][ T87] ? rcu_read_lock_any_held+0x3c/0x90 [ 11.694549][ T87] ? validate_chain+0x38b/0xc20 [ 11.694552][ T87] hvc_console_print+0x292/0x780 [ 11.694557][ T87] ? __lock_acquire+0x518/0xc20 [ 11.694558][ T87] ? __lock_acquire+0x518/0xc20 [ 11.694562][ T87] ? hvc_write+0x3a0/0x3a0 [ 11.694566][ T87] ? rcu_is_watching+0x16/0xd0 [ 11.694569][ T87] ? lock_acquire+0x13c/0x160 [ 11.694573][ T87] console_emit_next_record+0x252/0x4f0 [ 11.694577][ T87] ? devkmsg_read+0x4e0/0x4e0 [ 11.694581][ T87] ? rcu_is_watching+0x16/0xd0 [ 11.694583][ T87] ? lock_acquire+0x13c/0x160 [ 11.694587][ T87] console_flush_one_record+0x46f/0x710 [ 11.694596][ T87] ? console_emit_next_record+0x4f0/0x4f0 [ 11.694598][ T87] ? __lock_acquire+0x518/0xc20 [ 11.694603][ T87] console_unlock+0xee/0x1f0 [ 11.694605][ T87] ? console_flush_one_record+0x710/0x710 [ 11.694607][ T87] ? rcu_is_watching+0x16/0xd0 [ 11.694609][ T87] ? lock_acquire+0xa0/0x160 [ 11.694613][ T87] ? __down_trylock_console_sem+0x5e/0xa0 [ 11.694614][ T87] ? vprintk_emit+0x320/0x3e0 [ 11.694617][ T87] vprintk_emit+0x37c/0x3e0 [ 11.694621][ T87] ? wake_up_klogd_work_func+0x90/0x90 [ 11.694624][ T87] ? __lock_acquire+0x518/0xc20 [ 11.694628][ T87] _printk+0xc7/0x100 [ 11.694631][ T87] ? snapshot_read.cold+0x21/0x21 [ 11.694634][ T87] ? do_raw_spin_lock+0x131/0x280 [ 11.694636][ T87] ? __rwlock_init+0x150/0x150 [ 11.694640][ T87] ? do_raw_spin_lock+0x131/0x280 [ 11.694643][ T87] do_exit.cold+0x82/0x9c [ 11.694646][ T87] ? exit_notify+0x890/0x890 [ 11.694648][ T87] ? __lock_release.isra.0+0x69/0x1a0 [ 11.694650][ T87] ? rcu_is_watching+0x16/0xd0 [ 11.694654][ T87] do_group_exit+0xb8/0x370 [ 11.694657][ T87] __x64_sys_exit_group+0x3c/0x50 [ 11.694658][ T87] x64_sys_call+0x1567/0x1570 [ 11.694660][ T87] do_syscall_64+0xff/0x530 [ 11.694664][ T87] ? exc_page_fault+0xee/0x100 [ 11.694667][ T87] entry_SYSCALL_64_after_hwframe+0x4b/0x53 [ 11.694669][ T87] RIP: 0033:0x7f53b037c1b8 [ 11.694671][ T87] Code: Unable to access opcode bytes at 0x7f53b037c18e. [ 11.694672][ T87] RSP: 002b:00007ffd1f4824c8 EFLAGS: 00000256 ORIG_RAX: 00000000000000e7 [ 11.694675][ T87] RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 00007f53b037c1b8 [ 11.694676][ T87] RDX: 0000000000000000 RSI: fffffffffffffe90 RDI: 0000000000000000 [ 11.694677][ T87] RBP: 00007ffd1f482650 R08: 000055d2dbeccd88 R09: 0000000000000000 [ 11.694678][ T87] R10: 0000000000000000 R11: 0000000000000256 R12: 0000000000000000 [ 11.694678][ T87] R13: 00007f53afbda050 R14: 00007f53b08add9e R15: 000055d2dbd592f0 [ 11.694685][ T87]