[ 14.833302][ T180] (udev-worker) (180) used greatest stack depth: 22696 bytes left [ 14.833323][ T180] BUG: sleeping function called from invalid context at ./include/linux/sched/mm.h:322 [ 14.833325][ T180] in_atomic(): 1, irqs_disabled(): 1, non_block: 0, pid: 180, name: (udev-worker) [ 14.833327][ T180] preempt_count: 2, expected: 0 [ 14.833328][ T180] RCU nest depth: 0, expected: 0 [ 14.833329][ T180] locks held by (udev-worker)/180: 5, last CPU#3: [ 14.833332][ T180] #0: ffffffffadc027b8 (low_water_lock){+.+.}-{3:3}, at: do_exit+0x887/0xdc0 [ 14.833345][ T180] #1: ffffffffadd99cc0 (console_lock){+.+.}-{0:0}, at: vprintk_emit+0x320/0x3e0 [ 14.833351][ T180] #2: ffffffffadd99d38 (console_srcu){....}-{0:0}, at: console_flush_one_record+0x106/0x710 [ 14.833356][ T180] #3: ffffffffadc89660 (console_owner){....}-{0:0}, at: console_lock_spinning_enable+0x40/0x60 [ 14.833360][ T180] #4: ffffffffadc89560 (printk_legacy_map-wait-type-override){....}-{3:3}, at: console_emit_next_record+0x202/0x4f0 [ 14.833366][ T180] irq event stamp: 129584 [ 14.833367][ T180] hardirqs last enabled at (129583): [] __down_trylock_console_sem+0x86/0xa0 [ 14.833370][ T180] hardirqs last disabled at (129584): [] console_emit_next_record+0x3f8/0x4f0 [ 14.833373][ T180] softirqs last enabled at (129520): [] netlink_release+0x17b/0xcf0 [ 14.833378][ T180] softirqs last disabled at (129518): [] netlink_release+0xd2/0xcf0 [ 14.833381][ T180] Preemption disabled at: [ 14.833382][ T180] [<0000000000000000>] 0x0 [ 14.833390][ T180] CPU: 3 UID: 0 PID: 180 Comm: (udev-worker) Tainted: G W 7.2.0-virtme #1 PREEMPT(full) [ 14.833394][ T180] Tainted: [W]=WARN [ 14.833395][ T180] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011 [ 14.833397][ T180] Call Trace: [ 14.833399][ T180] [ 14.833401][ T180] dump_stack_lvl+0x6f/0xa0 [ 14.833408][ T180] __might_resched.cold+0x1fe/0x2c1 [ 14.833414][ T180] ? perf_trace_sched_switch+0x7c0/0x7c0 [ 14.833418][ T180] ? __kmalloc_noprof+0xdb/0x760 [ 14.833425][ T180] __kmalloc_noprof+0x443/0x760 [ 14.833429][ T180] ? alloc_buf.isra.0+0x4b/0x260 [ 14.833437][ T180] ? do_raw_spin_unlock+0x59/0x250 [ 14.833440][ T180] alloc_buf.isra.0+0x4b/0x260 [ 14.833445][ T180] put_chars+0x1e1/0x2f0 [ 14.833448][ T180] ? __send_to_port+0x420/0x420 [ 14.833450][ T180] ? printk_get_next_message+0x2fe/0x7d0 [ 14.833455][ T180] ? rcu_read_lock_any_held+0x3c/0x90 [ 14.833459][ T180] ? validate_chain+0x38b/0xc20 [ 14.833465][ T180] hvc_console_print+0x292/0x780 [ 14.833469][ T180] ? __lock_acquire+0x518/0xc20 [ 14.833471][ T180] ? __lock_acquire+0x518/0xc20 [ 14.833477][ T180] ? hvc_write+0x3a0/0x3a0 [ 14.833482][ T180] ? rcu_is_watching+0x16/0xd0 [ 14.833485][ T180] ? lock_acquire+0x13c/0x160 [ 14.833490][ T180] console_emit_next_record+0x252/0x4f0 [ 14.833495][ T180] ? devkmsg_read+0x4e0/0x4e0 [ 14.833500][ T180] ? rcu_is_watching+0x16/0xd0 [ 14.833502][ T180] ? lock_acquire+0x13c/0x160 [ 14.833507][ T180] console_flush_one_record+0x46f/0x710 [ 14.833512][ T180] ? console_emit_next_record+0x4f0/0x4f0 [ 14.833515][ T180] ? __lock_acquire+0x518/0xc20 [ 14.833521][ T180] console_unlock+0xee/0x1f0 [ 14.833524][ T180] ? console_flush_one_record+0x710/0x710 [ 14.833527][ T180] ? rcu_is_watching+0x16/0xd0 [ 14.833529][ T180] ? lock_acquire+0x60/0x160 [ 14.833534][ T180] ? __down_trylock_console_sem+0x5e/0xa0 [ 14.833536][ T180] ? vprintk_emit+0x320/0x3e0 [ 14.833539][ T180] vprintk_emit+0x37c/0x3e0 [ 14.833543][ T180] ? wake_up_klogd_work_func+0x90/0x90 [ 14.833547][ T180] ? __lock_acquire+0x518/0xc20 [ 14.833552][ T180] _printk+0xc7/0x100 [ 14.833556][ T180] ? snapshot_read.cold+0x21/0x21 [ 14.833559][ T180] ? do_raw_spin_lock+0x131/0x280 [ 14.833563][ T180] ? __rwlock_init+0x150/0x150 [ 14.833568][ T180] ? do_raw_spin_lock+0x131/0x280 [ 14.833571][ T180] do_exit.cold+0x82/0x9c [ 14.833576][ T180] ? exit_notify+0x890/0x890 [ 14.833577][ T180] ? __lock_release.isra.0+0x69/0x1a0 [ 14.833581][ T180] ? rcu_is_watching+0x16/0xd0 [ 14.833585][ T180] do_group_exit+0xb8/0x370 [ 14.833589][ T180] __x64_sys_exit_group+0x3c/0x50 [ 14.833591][ T180] x64_sys_call+0x1567/0x1570 [ 14.833594][ T180] do_syscall_64+0xff/0x530 [ 14.833598][ T180] ? exc_page_fault+0xee/0x100 [ 14.833602][ T180] entry_SYSCALL_64_after_hwframe+0x4b/0x53 [ 14.833605][ T180] RIP: 0033:0x7f3bc89ee1b8 [ 14.833607][ T180] Code: Unable to access opcode bytes at 0x7f3bc89ee18e. [ 14.833608][ T180] RSP: 002b:00007ffecdc5ddc8 EFLAGS: 00000256 ORIG_RAX: 00000000000000e7 [ 14.833611][ T180] RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 00007f3bc89ee1b8 [ 14.833613][ T180] RDX: 0000000000000000 RSI: fffffffffffffe90 RDI: 0000000000000000 [ 14.833614][ T180] RBP: 00007ffecdc5df50 R08: 0000558b85221278 R09: 0000000000000000 [ 14.833615][ T180] R10: 0000000000000000 R11: 0000000000000256 R12: 0000000000000000 [ 14.833616][ T180] R13: 00007f3bc824c050 R14: 00007f3bc8f1fd9e R15: 0000558b850a89e0 [ 14.833626][ T180]