[ 15.454449][ T84] (udev-worker) (84) used greatest stack depth: 22696 bytes left [ 15.454465][ T84] BUG: sleeping function called from invalid context at ./include/linux/sched/mm.h:322 [ 15.454467][ T84] in_atomic(): 1, irqs_disabled(): 1, non_block: 0, pid: 84, name: (udev-worker) [ 15.454468][ T84] preempt_count: 2, expected: 0 [ 15.454469][ T84] RCU nest depth: 0, expected: 0 [ 15.454470][ T84] locks held by (udev-worker)/84: 5, last CPU#2: [ 15.454472][ T84] #0: ffffffffa94027b8 (low_water_lock){+.+.}-{3:3}, at: do_exit+0x887/0xdc0 [ 15.454484][ T84] #1: ffffffffa9599cc0 (console_lock){+.+.}-{0:0}, at: vprintk_emit+0x320/0x3e0 [ 15.454489][ T84] #2: ffffffffa9599d38 (console_srcu){....}-{0:0}, at: console_flush_one_record+0x106/0x710 [ 15.454493][ T84] #3: ffffffffa9489660 (console_owner){....}-{0:0}, at: console_lock_spinning_enable+0x40/0x60 [ 15.454496][ T84] #4: ffffffffa9489560 (printk_legacy_map-wait-type-override){....}-{3:3}, at: console_emit_next_record+0x202/0x4f0 [ 15.454500][ T84] irq event stamp: 913200 [ 15.454500][ T84] hardirqs last enabled at (913199): [] __down_trylock_console_sem+0x86/0xa0 [ 15.454503][ T84] hardirqs last disabled at (913200): [] console_emit_next_record+0x3f8/0x4f0 [ 15.454504][ T84] softirqs last enabled at (913136): [] netlink_release+0x17b/0xcf0 [ 15.454509][ T84] softirqs last disabled at (913134): [] netlink_release+0xd2/0xcf0 [ 15.454511][ T84] Preemption disabled at: [ 15.454512][ T84] [<0000000000000000>] 0x0 [ 15.454518][ T84] CPU: 2 UID: 0 PID: 84 Comm: (udev-worker) Tainted: G W 7.2.0-virtme #1 PREEMPT(full) [ 15.454521][ T84] Tainted: [W]=WARN [ 15.454522][ T84] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011 [ 15.454524][ T84] Call Trace: [ 15.454526][ T84] [ 15.454527][ T84] dump_stack_lvl+0x6f/0xa0 [ 15.454533][ T84] __might_resched.cold+0x1fe/0x2c1 [ 15.454538][ T84] ? perf_trace_sched_switch+0x7c0/0x7c0 [ 15.454541][ T84] ? __kmalloc_noprof+0xdb/0x760 [ 15.454546][ T84] __kmalloc_noprof+0x443/0x760 [ 15.454547][ T84] ? alloc_buf.isra.0+0x4b/0x260 [ 15.454553][ T84] ? do_raw_spin_unlock+0x59/0x250 [ 15.454555][ T84] alloc_buf.isra.0+0x4b/0x260 [ 15.454558][ T84] put_chars+0x1e1/0x2f0 [ 15.454560][ T84] ? __send_to_port+0x420/0x420 [ 15.454561][ T84] ? printk_get_next_message+0x2fe/0x7d0 [ 15.454565][ T84] ? rcu_read_lock_any_held+0x3c/0x90 [ 15.454568][ T84] ? validate_chain+0x38b/0xc20 [ 15.454572][ T84] hvc_console_print+0x292/0x780 [ 15.454574][ T84] ? __lock_acquire+0x518/0xc20 [ 15.454575][ T84] ? __lock_acquire+0x518/0xc20 [ 15.454579][ T84] ? hvc_write+0x3a0/0x3a0 [ 15.454582][ T84] ? rcu_is_watching+0x16/0xd0 [ 15.454585][ T84] ? lock_acquire+0x13c/0x160 [ 15.454588][ T84] console_emit_next_record+0x252/0x4f0 [ 15.454592][ T84] ? devkmsg_read+0x4e0/0x4e0 [ 15.454598][ T84] ? rcu_is_watching+0x16/0xd0 [ 15.454600][ T84] ? lock_acquire+0x13c/0x160 [ 15.454604][ T84] console_flush_one_record+0x46f/0x710 [ 15.454607][ T84] ? console_emit_next_record+0x4f0/0x4f0 [ 15.454609][ T84] ? __lock_acquire+0x518/0xc20 [ 15.454614][ T84] console_unlock+0xee/0x1f0 [ 15.454616][ T84] ? console_flush_one_record+0x710/0x710 [ 15.454618][ T84] ? rcu_is_watching+0x16/0xd0 [ 15.454620][ T84] ? lock_acquire+0x60/0x160 [ 15.454623][ T84] ? __down_trylock_console_sem+0x5e/0xa0 [ 15.454624][ T84] ? vprintk_emit+0x320/0x3e0 [ 15.454627][ T84] vprintk_emit+0x37c/0x3e0 [ 15.454631][ T84] ? wake_up_klogd_work_func+0x90/0x90 [ 15.454634][ T84] ? __lock_acquire+0x518/0xc20 [ 15.454637][ T84] _printk+0xc7/0x100 [ 15.454641][ T84] ? snapshot_read.cold+0x21/0x21 [ 15.454644][ T84] ? do_raw_spin_lock+0x131/0x280 [ 15.454646][ T84] ? __rwlock_init+0x150/0x150 [ 15.454650][ T84] ? do_raw_spin_lock+0x131/0x280 [ 15.454652][ T84] do_exit.cold+0x82/0x9c [ 15.454655][ T84] ? exit_notify+0x890/0x890 [ 15.454657][ T84] ? __lock_release.isra.0+0x69/0x1a0 [ 15.454659][ T84] ? rcu_is_watching+0x16/0xd0 [ 15.454663][ T84] do_group_exit+0xb8/0x370 [ 15.454666][ T84] __x64_sys_exit_group+0x3c/0x50 [ 15.454669][ T84] x64_sys_call+0x1567/0x1570 [ 15.454671][ T84] do_syscall_64+0xff/0x530 [ 15.454674][ T84] ? irq_exit_rcu+0x1a/0x30 [ 15.454677][ T84] entry_SYSCALL_64_after_hwframe+0x4b/0x53 [ 15.454679][ T84] RIP: 0033:0x7ffa1d7931b8 [ 15.454681][ T84] Code: Unable to access opcode bytes at 0x7ffa1d79318e. [ 15.454682][ T84] RSP: 002b:00007fffbfaef898 EFLAGS: 00000256 ORIG_RAX: 00000000000000e7 [ 15.454685][ T84] RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 00007ffa1d7931b8 [ 15.454686][ T84] RDX: 0000000000000000 RSI: fffffffffffffe90 RDI: 0000000000000000 [ 15.454687][ T84] RBP: 00007fffbfaefa20 R08: 000056221c7ba408 R09: 0000000000000000 [ 15.454688][ T84] R10: 0000000000000000 R11: 0000000000000256 R12: 0000000000000000 [ 15.454688][ T84] R13: 00007ffa1cff1050 R14: 00007ffa1dcc4d9e R15: 000056221c667100 [ 15.454695][ T84]