[ 11.781872][ T87] (udev-worker) (87) used greatest stack depth: 22696 bytes left [ 11.781890][ T87] BUG: sleeping function called from invalid context at ./include/linux/sched/mm.h:322 [ 11.781892][ T87] in_atomic(): 1, irqs_disabled(): 1, non_block: 0, pid: 87, name: (udev-worker) [ 11.781893][ T87] preempt_count: 2, expected: 0 [ 11.781894][ T87] RCU nest depth: 0, expected: 0 [ 11.781895][ T87] locks held by (udev-worker)/87: 5, last CPU#3: [ 11.781897][ T87] #0: ffffffff8d4027b8 (low_water_lock){+.+.}-{3:3}, at: do_exit+0x887/0xdc0 [ 11.781909][ T87] #1: ffffffff8d599dc0 (console_lock){+.+.}-{0:0}, at: vprintk_emit+0x320/0x3e0 [ 11.781915][ T87] #2: ffffffff8d599e38 (console_srcu){....}-{0:0}, at: console_flush_one_record+0x106/0x710 [ 11.781919][ T87] #3: ffffffff8d489760 (console_owner){....}-{0:0}, at: console_lock_spinning_enable+0x40/0x60 [ 11.781922][ T87] #4: ffffffff8d489660 (printk_legacy_map-wait-type-override){....}-{3:3}, at: console_emit_next_record+0x202/0x4f0 [ 11.781926][ T87] irq event stamp: 466672 [ 11.781927][ T87] hardirqs last enabled at (466671): [] __down_trylock_console_sem+0x86/0xa0 [ 11.781929][ T87] hardirqs last disabled at (466672): [] console_emit_next_record+0x3f8/0x4f0 [ 11.781931][ T87] softirqs last enabled at (466608): [] netlink_release+0x17b/0xcf0 [ 11.781935][ T87] softirqs last disabled at (466606): [] netlink_release+0xd2/0xcf0 [ 11.781938][ T87] Preemption disabled at: [ 11.781938][ T87] [<0000000000000000>] 0x0 [ 11.781945][ T87] CPU: 3 UID: 0 PID: 87 Comm: (udev-worker) Tainted: G W 7.2.0-virtme #1 PREEMPT(full) [ 11.781948][ T87] Tainted: [W]=WARN [ 11.781949][ T87] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011 [ 11.781951][ T87] Call Trace: [ 11.781953][ T87] [ 11.781954][ T87] dump_stack_lvl+0x6f/0xa0 [ 11.781960][ T87] __might_resched.cold+0x1fe/0x2c1 [ 11.781965][ T87] ? perf_trace_sched_switch+0x7c0/0x7c0 [ 11.781969][ T87] ? __kmalloc_noprof+0xdb/0x760 [ 11.781974][ T87] __kmalloc_noprof+0x443/0x760 [ 11.781976][ T87] ? alloc_buf.isra.0+0x4b/0x260 [ 11.781982][ T87] ? do_raw_spin_unlock+0x59/0x250 [ 11.781985][ T87] alloc_buf.isra.0+0x4b/0x260 [ 11.781988][ T87] put_chars+0x1e1/0x2f0 [ 11.781992][ T87] ? __send_to_port+0x420/0x420 [ 11.781993][ T87] ? printk_get_next_message+0x2fe/0x7d0 [ 11.781997][ T87] ? rcu_read_lock_any_held+0x3c/0x90 [ 11.782000][ T87] ? validate_chain+0x38b/0xc20 [ 11.782003][ T87] hvc_console_print+0x292/0x780 [ 11.782007][ T87] ? __lock_acquire+0x518/0xc20 [ 11.782009][ T87] ? __lock_acquire+0x518/0xc20 [ 11.782013][ T87] ? hvc_write+0x3a0/0x3a0 [ 11.782016][ T87] ? rcu_is_watching+0x16/0xd0 [ 11.782020][ T87] ? lock_acquire+0x13c/0x160 [ 11.782023][ T87] console_emit_next_record+0x252/0x4f0 [ 11.782027][ T87] ? devkmsg_read+0x4e0/0x4e0 [ 11.782031][ T87] ? rcu_is_watching+0x16/0xd0 [ 11.782034][ T87] ? lock_acquire+0x13c/0x160 [ 11.782037][ T87] console_flush_one_record+0x46f/0x710 [ 11.782041][ T87] ? console_emit_next_record+0x4f0/0x4f0 [ 11.782043][ T87] ? __lock_acquire+0x518/0xc20 [ 11.782048][ T87] console_unlock+0xee/0x1f0 [ 11.782050][ T87] ? console_flush_one_record+0x710/0x710 [ 11.782052][ T87] ? rcu_is_watching+0x16/0xd0 [ 11.782054][ T87] ? lock_acquire+0xa0/0x160 [ 11.782058][ T87] ? __down_trylock_console_sem+0x5e/0xa0 [ 11.782059][ T87] ? vprintk_emit+0x320/0x3e0 [ 11.782063][ T87] vprintk_emit+0x37c/0x3e0 [ 11.782066][ T87] ? wake_up_klogd_work_func+0x90/0x90 [ 11.782070][ T87] ? __lock_acquire+0x518/0xc20 [ 11.782073][ T87] _printk+0xc7/0x100 [ 11.782076][ T87] ? snapshot_read.cold+0x21/0x21 [ 11.782079][ T87] ? do_raw_spin_lock+0x131/0x280 [ 11.782082][ T87] ? __rwlock_init+0x150/0x150 [ 11.782085][ T87] ? do_raw_spin_lock+0x131/0x280 [ 11.782088][ T87] do_exit.cold+0x82/0x9c [ 11.782092][ T87] ? exit_notify+0x890/0x890 [ 11.782093][ T87] ? __lock_release.isra.0+0x69/0x1a0 [ 11.782095][ T87] ? rcu_is_watching+0x16/0xd0 [ 11.782099][ T87] do_group_exit+0xb8/0x370 [ 11.782102][ T87] __x64_sys_exit_group+0x3c/0x50 [ 11.782104][ T87] x64_sys_call+0x1567/0x1570 [ 11.782106][ T87] do_syscall_64+0xff/0x530 [ 11.782109][ T87] ? irq_exit_rcu+0x1a/0x30 [ 11.782112][ T87] entry_SYSCALL_64_after_hwframe+0x4b/0x53 [ 11.782114][ T87] RIP: 0033:0x7f34989801b8 [ 11.782116][ T87] Code: Unable to access opcode bytes at 0x7f349898018e. [ 11.782118][ T87] RSP: 002b:00007ffc7cef63d8 EFLAGS: 00000256 ORIG_RAX: 00000000000000e7 [ 11.782120][ T87] RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 00007f34989801b8 [ 11.782121][ T87] RDX: 0000000000000000 RSI: fffffffffffffe90 RDI: 0000000000000000 [ 11.782122][ T87] RBP: 00007ffc7cef6560 R08: 000055d95b0d86a8 R09: 0000000000000000 [ 11.782123][ T87] R10: 0000000000000000 R11: 0000000000000256 R12: 0000000000000000 [ 11.782124][ T87] R13: 00007f34981de050 R14: 00007f3498eb1d9e R15: 000055d95af7e790 [ 11.782130][ T87]