[ 13.790282][ T86] (udev-worker) (86) used greatest stack depth: 22696 bytes left [ 13.790301][ T86] BUG: sleeping function called from invalid context at ./include/linux/sched/mm.h:322 [ 13.790303][ T86] in_atomic(): 1, irqs_disabled(): 1, non_block: 0, pid: 86, name: (udev-worker) [ 13.790304][ T86] preempt_count: 2, expected: 0 [ 13.790305][ T86] RCU nest depth: 0, expected: 0 [ 13.790306][ T86] locks held by (udev-worker)/86: 5, last CPU#0: [ 13.790308][ T86] #0: ffffffffa3e027b8 (low_water_lock){+.+.}-{3:3}, at: do_exit+0x887/0xdc0 [ 13.790320][ T86] #1: ffffffffa3f99cc0 (console_lock){+.+.}-{0:0}, at: vprintk_emit+0x320/0x3e0 [ 13.790326][ T86] #2: ffffffffa3f99d38 (console_srcu){....}-{0:0}, at: console_flush_one_record+0x106/0x710 [ 13.790329][ T86] #3: ffffffffa3e89660 (console_owner){....}-{0:0}, at: console_lock_spinning_enable+0x40/0x60 [ 13.790333][ T86] #4: ffffffffa3e89560 (printk_legacy_map-wait-type-override){....}-{3:3}, at: console_emit_next_record+0x202/0x4f0 [ 13.790336][ T86] irq event stamp: 402856 [ 13.790337][ T86] hardirqs last enabled at (402855): [] __down_trylock_console_sem+0x86/0xa0 [ 13.790339][ T86] hardirqs last disabled at (402856): [] console_emit_next_record+0x3f8/0x4f0 [ 13.790341][ T86] softirqs last enabled at (402790): [] netlink_release+0x17b/0xcf0 [ 13.790345][ T86] softirqs last disabled at (402788): [] netlink_release+0xd2/0xcf0 [ 13.790348][ T86] Preemption disabled at: [ 13.790348][ T86] [<0000000000000000>] 0x0 [ 13.790355][ T86] CPU: 0 UID: 0 PID: 86 Comm: (udev-worker) Tainted: G W 7.2.0-virtme #1 PREEMPT(full) [ 13.790359][ T86] Tainted: [W]=WARN [ 13.790359][ T86] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011 [ 13.790361][ T86] Call Trace: [ 13.790363][ T86] [ 13.790364][ T86] dump_stack_lvl+0x6f/0xa0 [ 13.790370][ T86] __might_resched.cold+0x1fe/0x2c1 [ 13.790375][ T86] ? perf_trace_sched_switch+0x7c0/0x7c0 [ 13.790378][ T86] ? __kmalloc_noprof+0xdb/0x760 [ 13.790383][ T86] __kmalloc_noprof+0x443/0x760 [ 13.790385][ T86] ? alloc_buf.isra.0+0x4b/0x260 [ 13.790390][ T86] ? do_raw_spin_unlock+0x59/0x250 [ 13.790393][ T86] alloc_buf.isra.0+0x4b/0x260 [ 13.790396][ T86] put_chars+0x1e1/0x2f0 [ 13.790399][ T86] ? __send_to_port+0x420/0x420 [ 13.790400][ T86] ? printk_get_next_message+0x2fe/0x7d0 [ 13.790403][ T86] ? rcu_read_lock_any_held+0x3c/0x90 [ 13.790406][ T86] ? validate_chain+0x38b/0xc20 [ 13.790410][ T86] hvc_console_print+0x292/0x780 [ 13.790413][ T86] ? __lock_acquire+0x518/0xc20 [ 13.790414][ T86] ? __lock_acquire+0x518/0xc20 [ 13.790418][ T86] ? hvc_write+0x3a0/0x3a0 [ 13.790422][ T86] ? rcu_is_watching+0x16/0xd0 [ 13.790429][ T86] ? lock_acquire+0x13c/0x160 [ 13.790433][ T86] console_emit_next_record+0x252/0x4f0 [ 13.790437][ T86] ? devkmsg_read+0x4e0/0x4e0 [ 13.790441][ T86] ? rcu_is_watching+0x16/0xd0 [ 13.790443][ T86] ? lock_acquire+0x13c/0x160 [ 13.790447][ T86] console_flush_one_record+0x46f/0x710 [ 13.790450][ T86] ? console_emit_next_record+0x4f0/0x4f0 [ 13.790452][ T86] ? __lock_acquire+0x518/0xc20 [ 13.790457][ T86] console_unlock+0xee/0x1f0 [ 13.790459][ T86] ? console_flush_one_record+0x710/0x710 [ 13.790461][ T86] ? rcu_is_watching+0x16/0xd0 [ 13.790463][ T86] ? lock_acquire+0x60/0x160 [ 13.790466][ T86] ? __down_trylock_console_sem+0x5e/0xa0 [ 13.790468][ T86] ? vprintk_emit+0x320/0x3e0 [ 13.790471][ T86] vprintk_emit+0x37c/0x3e0 [ 13.790474][ T86] ? wake_up_klogd_work_func+0x90/0x90 [ 13.790478][ T86] ? __lock_acquire+0x518/0xc20 [ 13.790481][ T86] _printk+0xc7/0x100 [ 13.790484][ T86] ? snapshot_read.cold+0x21/0x21 [ 13.790487][ T86] ? do_raw_spin_lock+0x131/0x280 [ 13.790489][ T86] ? __rwlock_init+0x150/0x150 [ 13.790493][ T86] ? do_raw_spin_lock+0x131/0x280 [ 13.790495][ T86] do_exit.cold+0x82/0x9c [ 13.790499][ T86] ? exit_notify+0x890/0x890 [ 13.790501][ T86] ? __lock_release.isra.0+0x69/0x1a0 [ 13.790503][ T86] ? rcu_is_watching+0x16/0xd0 [ 13.790507][ T86] do_group_exit+0xb8/0x370 [ 13.790511][ T86] __x64_sys_exit_group+0x3c/0x50 [ 13.790513][ T86] x64_sys_call+0x1567/0x1570 [ 13.790515][ T86] do_syscall_64+0xff/0x530 [ 13.790518][ T86] ? exc_page_fault+0xee/0x100 [ 13.790521][ T86] entry_SYSCALL_64_after_hwframe+0x4b/0x53 [ 13.790523][ T86] RIP: 0033:0x7f77f4b3c1b8 [ 13.790525][ T86] Code: Unable to access opcode bytes at 0x7f77f4b3c18e. [ 13.790527][ T86] RSP: 002b:00007ffd949224e8 EFLAGS: 00000256 ORIG_RAX: 00000000000000e7 [ 13.790529][ T86] RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 00007f77f4b3c1b8 [ 13.790530][ T86] RDX: 0000000000000000 RSI: fffffffffffffe90 RDI: 0000000000000000 [ 13.790531][ T86] RBP: 00007ffd94922670 R08: 000055781f320958 R09: 0000000000000000 [ 13.790532][ T86] R10: 0000000000000000 R11: 0000000000000256 R12: 0000000000000000 [ 13.790533][ T86] R13: 00007f77f439a050 R14: 00007f77f506dd9e R15: 000055781f1c7550 [ 13.790539][ T86]