[ 63.048310][ T177] (udev-worker) (177) used greatest stack depth: 22696 bytes left [ 63.048331][ T177] BUG: sleeping function called from invalid context at ./include/linux/sched/mm.h:322 [ 63.048333][ T177] in_atomic(): 1, irqs_disabled(): 1, non_block: 0, pid: 177, name: (udev-worker) [ 63.048335][ T177] preempt_count: 2, expected: 0 [ 63.048336][ T177] RCU nest depth: 0, expected: 0 [ 63.048337][ T177] locks held by (udev-worker)/177: 5, last CPU#0: [ 63.048340][ T177] #0: ffffffff9fe027b8 (low_water_lock){+.+.}-{3:3}, at: do_exit+0x887/0xdc0 [ 63.048353][ T177] #1: ffffffff9ff99cc0 (console_lock){+.+.}-{0:0}, at: vprintk_emit+0x320/0x3e0 [ 63.048361][ T177] #2: ffffffff9ff99d38 (console_srcu){....}-{0:0}, at: console_flush_one_record+0x106/0x710 [ 63.048366][ T177] #3: ffffffff9fe89660 (console_owner){....}-{0:0}, at: console_lock_spinning_enable+0x40/0x60 [ 63.048369][ T177] #4: ffffffff9fe89560 (printk_legacy_map-wait-type-override){....}-{3:3}, at: console_emit_next_record+0x202/0x4f0 [ 63.048374][ T177] irq event stamp: 6232856 [ 63.048375][ T177] hardirqs last enabled at (6232855): [] __down_trylock_console_sem+0x86/0xa0 [ 63.048377][ T177] hardirqs last disabled at (6232856): [] console_emit_next_record+0x3f8/0x4f0 [ 63.048379][ T177] softirqs last enabled at (6232792): [] netlink_release+0x17b/0xcf0 [ 63.048384][ T177] softirqs last disabled at (6232790): [] netlink_release+0xd2/0xcf0 [ 63.048387][ T177] Preemption disabled at: [ 63.048387][ T177] [<0000000000000000>] 0x0 [ 63.048394][ T177] CPU: 0 UID: 0 PID: 177 Comm: (udev-worker) Tainted: G W 7.2.0-virtme #1 PREEMPT(full) [ 63.048398][ T177] Tainted: [W]=WARN [ 63.048399][ T177] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011 [ 63.048401][ T177] Call Trace: [ 63.048403][ T177] [ 63.048405][ T177] dump_stack_lvl+0x6f/0xa0 [ 63.048411][ T177] __might_resched.cold+0x1fe/0x2c1 [ 63.048415][ T177] ? perf_trace_sched_switch+0x7c0/0x7c0 [ 63.048419][ T177] ? __kmalloc_noprof+0xdb/0x760 [ 63.048424][ T177] __kmalloc_noprof+0x443/0x760 [ 63.048426][ T177] ? alloc_buf.isra.0+0x4b/0x260 [ 63.048432][ T177] ? do_raw_spin_unlock+0x59/0x250 [ 63.048435][ T177] alloc_buf.isra.0+0x4b/0x260 [ 63.048438][ T177] put_chars+0x1e1/0x2f0 [ 63.048441][ T177] ? __send_to_port+0x420/0x420 [ 63.048442][ T177] ? printk_get_next_message+0x2fe/0x7d0 [ 63.048446][ T177] ? rcu_read_lock_any_held+0x3c/0x90 [ 63.048448][ T177] ? validate_chain+0x38b/0xc20 [ 63.048453][ T177] hvc_console_print+0x292/0x780 [ 63.048456][ T177] ? __lock_acquire+0x518/0xc20 [ 63.048457][ T177] ? __lock_acquire+0x518/0xc20 [ 63.048462][ T177] ? hvc_write+0x3a0/0x3a0 [ 63.048465][ T177] ? rcu_is_watching+0x16/0xd0 [ 63.048468][ T177] ? lock_acquire+0x13c/0x160 [ 63.048472][ T177] console_emit_next_record+0x252/0x4f0 [ 63.048476][ T177] ? devkmsg_read+0x4e0/0x4e0 [ 63.048480][ T177] ? rcu_is_watching+0x16/0xd0 [ 63.048483][ T177] ? lock_acquire+0x13c/0x160 [ 63.048486][ T177] console_flush_one_record+0x46f/0x710 [ 63.048490][ T177] ? console_emit_next_record+0x4f0/0x4f0 [ 63.048492][ T177] ? __lock_acquire+0x518/0xc20 [ 63.048497][ T177] console_unlock+0xee/0x1f0 [ 63.048500][ T177] ? console_flush_one_record+0x710/0x710 [ 63.048502][ T177] ? rcu_is_watching+0x16/0xd0 [ 63.048504][ T177] ? lock_acquire+0x60/0x160 [ 63.048507][ T177] ? __down_trylock_console_sem+0x5e/0xa0 [ 63.048509][ T177] ? vprintk_emit+0x320/0x3e0 [ 63.048512][ T177] vprintk_emit+0x37c/0x3e0 [ 63.048516][ T177] ? wake_up_klogd_work_func+0x90/0x90 [ 63.048519][ T177] ? __lock_acquire+0x518/0xc20 [ 63.048523][ T177] _printk+0xc7/0x100 [ 63.048527][ T177] ? snapshot_read.cold+0x21/0x21 [ 63.048530][ T177] ? do_raw_spin_lock+0x131/0x280 [ 63.048532][ T177] ? __rwlock_init+0x150/0x150 [ 63.048536][ T177] ? do_raw_spin_lock+0x131/0x280 [ 63.048538][ T177] do_exit.cold+0x82/0x9c [ 63.048542][ T177] ? exit_notify+0x890/0x890 [ 63.048544][ T177] ? __lock_release.isra.0+0x69/0x1a0 [ 63.048546][ T177] ? rcu_is_watching+0x16/0xd0 [ 63.048551][ T177] do_group_exit+0xb8/0x370 [ 63.048554][ T177] __x64_sys_exit_group+0x3c/0x50 [ 63.048557][ T177] x64_sys_call+0x1567/0x1570 [ 63.048559][ T177] do_syscall_64+0xff/0x530 [ 63.048562][ T177] ? exc_page_fault+0xee/0x100 [ 63.048566][ T177] entry_SYSCALL_64_after_hwframe+0x4b/0x53 [ 63.048568][ T177] RIP: 0033:0x7fdd870271b8 [ 63.048571][ T177] Code: Unable to access opcode bytes at 0x7fdd8702718e. [ 63.048572][ T177] RSP: 002b:00007ffcf62340f8 EFLAGS: 00000256 ORIG_RAX: 00000000000000e7 [ 63.048574][ T177] RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 00007fdd870271b8 [ 63.048576][ T177] RDX: 0000000000000000 RSI: fffffffffffffe90 RDI: 0000000000000000 [ 63.048577][ T177] RBP: 00007ffcf6234280 R08: 0000563bd68885e8 R09: 0000000000000000 [ 63.048578][ T177] R10: 0000000000000000 R11: 0000000000000256 R12: 0000000000000000 [ 63.048578][ T177] R13: 00007fdd86885050 R14: 00007fdd87558d9e R15: 0000563bd66fe8f0 [ 63.048585][ T177]