[ 13.475227][ T86] (udev-worker) (86) used greatest stack depth: 22696 bytes left [ 13.475246][ T86] BUG: sleeping function called from invalid context at ./include/linux/sched/mm.h:322 [ 13.475248][ T86] in_atomic(): 1, irqs_disabled(): 1, non_block: 0, pid: 86, name: (udev-worker) [ 13.475250][ T86] preempt_count: 2, expected: 0 [ 13.475251][ T86] RCU nest depth: 0, expected: 0 [ 13.475252][ T86] locks held by (udev-worker)/86: 5, last CPU#1: [ 13.475254][ T86] #0: ffffffffb26027b8 (low_water_lock){+.+.}-{3:3}, at: do_exit+0x887/0xdc0 [ 13.475268][ T86] #1: ffffffffb2769cc0 (console_lock){+.+.}-{0:0}, at: vprintk_emit+0x320/0x3e0 [ 13.475274][ T86] #2: ffffffffb2769d38 (console_srcu){....}-{0:0}, at: console_flush_one_record+0x106/0x710 [ 13.475277][ T86] #3: ffffffffb2689660 (console_owner){....}-{0:0}, at: console_lock_spinning_enable+0x40/0x60 [ 13.475281][ T86] #4: ffffffffb2689560 (printk_legacy_map-wait-type-override){....}-{3:3}, at: console_emit_next_record+0x1df/0x4c0 [ 13.475285][ T86] irq event stamp: 539856 [ 13.475286][ T86] hardirqs last enabled at (539855): [] __down_trylock_console_sem+0x86/0xa0 [ 13.475288][ T86] hardirqs last disabled at (539856): [] console_emit_next_record+0x3d4/0x4c0 [ 13.475290][ T86] softirqs last enabled at (539788): [] netlink_release+0x17b/0xcf0 [ 13.475294][ T86] softirqs last disabled at (539786): [] netlink_release+0xd2/0xcf0 [ 13.475297][ T86] Preemption disabled at: [ 13.475297][ T86] [<0000000000000000>] 0x0 [ 13.475304][ T86] CPU: 1 UID: 0 PID: 86 Comm: (udev-worker) Tainted: G W 7.2.0-virtme #1 PREEMPT(full) [ 13.475308][ T86] Tainted: [W]=WARN [ 13.475309][ T86] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011 [ 13.475311][ T86] Call Trace: [ 13.475312][ T86] [ 13.475314][ T86] dump_stack_lvl+0x6f/0xa0 [ 13.475320][ T86] __might_resched.cold+0x1fe/0x2c1 [ 13.475325][ T86] ? perf_trace_sched_switch+0x7c0/0x7c0 [ 13.475333][ T86] ? __kmalloc_noprof+0xdb/0x760 [ 13.475338][ T86] __kmalloc_noprof+0x443/0x760 [ 13.475340][ T86] ? alloc_buf.isra.0+0x4b/0x260 [ 13.475347][ T86] ? do_raw_spin_unlock+0x59/0x250 [ 13.475350][ T86] alloc_buf.isra.0+0x4b/0x260 [ 13.475354][ T86] put_chars+0x1e1/0x2f0 [ 13.475357][ T86] ? __send_to_port+0x420/0x420 [ 13.475359][ T86] ? rcu_lockdep_current_cpu_online+0x3f/0x1b0 [ 13.475364][ T86] ? validate_chain+0x38b/0xc20 [ 13.475369][ T86] hvc_console_print+0x292/0x780 [ 13.475376][ T86] ? hvc_write+0x3a0/0x3a0 [ 13.475379][ T86] ? rcu_is_watching+0x16/0xd0 [ 13.475381][ T86] ? lock_acquire+0x13c/0x160 [ 13.475385][ T86] console_emit_next_record+0x22f/0x4c0 [ 13.475389][ T86] ? devkmsg_read+0x4b0/0x4b0 [ 13.475390][ T86] ? console_flush_one_record+0x106/0x710 [ 13.475393][ T86] ? rcu_is_watching+0x16/0xd0 [ 13.475395][ T86] ? lock_acquire+0x13c/0x160 [ 13.475399][ T86] console_flush_one_record+0x46f/0x710 [ 13.475403][ T86] ? console_emit_next_record+0x4c0/0x4c0 [ 13.475405][ T86] ? __lock_acquire+0x518/0xc20 [ 13.475410][ T86] console_unlock+0xee/0x1f0 [ 13.475413][ T86] ? console_flush_one_record+0x710/0x710 [ 13.475414][ T86] ? rcu_is_watching+0x16/0xd0 [ 13.475417][ T86] ? lock_acquire+0x60/0x160 [ 13.475420][ T86] ? __down_trylock_console_sem+0x5e/0xa0 [ 13.475422][ T86] ? vprintk_emit+0x320/0x3e0 [ 13.475425][ T86] vprintk_emit+0x37c/0x3e0 [ 13.475429][ T86] ? wake_up_klogd_work_func+0x90/0x90 [ 13.475432][ T86] ? __lock_acquire+0x518/0xc20 [ 13.475435][ T86] _printk+0xc7/0x100 [ 13.475439][ T86] ? snapshot_read.cold+0x21/0x21 [ 13.475442][ T86] ? do_raw_spin_lock+0x131/0x280 [ 13.475444][ T86] ? __rwlock_init+0x150/0x150 [ 13.475448][ T86] ? do_raw_spin_lock+0x131/0x280 [ 13.475450][ T86] do_exit.cold+0x82/0x9c [ 13.475454][ T86] ? exit_notify+0x890/0x890 [ 13.475456][ T86] ? __lock_release.isra.0+0x69/0x1a0 [ 13.475459][ T86] ? rcu_is_watching+0x16/0xd0 [ 13.475463][ T86] do_group_exit+0xb8/0x370 [ 13.475466][ T86] __x64_sys_exit_group+0x3c/0x50 [ 13.475468][ T86] x64_sys_call+0x1567/0x1570 [ 13.475471][ T86] do_syscall_64+0xff/0x530 [ 13.475475][ T86] ? exc_page_fault+0xee/0x100 [ 13.475477][ T86] entry_SYSCALL_64_after_hwframe+0x4b/0x53 [ 13.475480][ T86] RIP: 0033:0x7f9ae99481b8 [ 13.475482][ T86] Code: Unable to access opcode bytes at 0x7f9ae994818e. [ 13.475483][ T86] RSP: 002b:00007ffcd0367c98 EFLAGS: 00000256 ORIG_RAX: 00000000000000e7 [ 13.475486][ T86] RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 00007f9ae99481b8 [ 13.475488][ T86] RDX: 0000000000000000 RSI: fffffffffffffe90 RDI: 0000000000000000 [ 13.475489][ T86] RBP: 00007ffcd0367e20 R08: 000055a57fd555e8 R09: 0000000000000000 [ 13.475489][ T86] R10: 0000000000000000 R11: 0000000000000256 R12: 0000000000000000 [ 13.475490][ T86] R13: 00007f9ae91a6050 R14: 00007f9ae9e79d9e R15: 000055a57fd481b0 [ 13.475497][ T86]