[ 13.245563][ T89] (udev-worker) (89) used greatest stack depth: 22696 bytes left [ 13.245583][ T89] BUG: sleeping function called from invalid context at ./include/linux/sched/mm.h:322 [ 13.245585][ T89] in_atomic(): 1, irqs_disabled(): 1, non_block: 0, pid: 89, name: (udev-worker) [ 13.245586][ T89] preempt_count: 2, expected: 0 [ 13.245587][ T89] RCU nest depth: 0, expected: 0 [ 13.245588][ T89] locks held by (udev-worker)/89: 5, last CPU#3: [ 13.245591][ T89] #0: ffffffff9d6027b8 (low_water_lock){+.+.}-{3:3}, at: do_exit+0x887/0xdc0 [ 13.245604][ T89] #1: ffffffff9d769cc0 (console_lock){+.+.}-{0:0}, at: vprintk_emit+0x320/0x3e0 [ 13.245609][ T89] #2: ffffffff9d769d38 (console_srcu){....}-{0:0}, at: console_flush_one_record+0x106/0x710 [ 13.245613][ T89] #3: ffffffff9d689660 (console_owner){....}-{0:0}, at: console_lock_spinning_enable+0x40/0x60 [ 13.245616][ T89] #4: ffffffff9d689560 (printk_legacy_map-wait-type-override){....}-{3:3}, at: console_emit_next_record+0x1df/0x4c0 [ 13.245620][ T89] irq event stamp: 523552 [ 13.245621][ T89] hardirqs last enabled at (523551): [] __down_trylock_console_sem+0x86/0xa0 [ 13.245623][ T89] hardirqs last disabled at (523552): [] console_emit_next_record+0x3d4/0x4c0 [ 13.245625][ T89] softirqs last enabled at (523488): [] handle_softirqs+0x67c/0x900 [ 13.245628][ T89] softirqs last disabled at (522631): [] do_softirq+0xac/0xe0 [ 13.245630][ T89] Preemption disabled at: [ 13.245631][ T89] [<0000000000000000>] 0x0 [ 13.245638][ T89] CPU: 3 UID: 0 PID: 89 Comm: (udev-worker) Tainted: G W 7.2.0-virtme #1 PREEMPT(full) [ 13.245641][ T89] Tainted: [W]=WARN [ 13.245642][ T89] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011 [ 13.245644][ T89] Call Trace: [ 13.245645][ T89] [ 13.245647][ T89] dump_stack_lvl+0x6f/0xa0 [ 13.245653][ T89] __might_resched.cold+0x1fe/0x2c1 [ 13.245658][ T89] ? perf_trace_sched_switch+0x7c0/0x7c0 [ 13.245661][ T89] ? __kmalloc_noprof+0xdb/0x760 [ 13.245666][ T89] __kmalloc_noprof+0x443/0x760 [ 13.245668][ T89] ? alloc_buf.isra.0+0x4b/0x260 [ 13.245674][ T89] ? do_raw_spin_unlock+0x59/0x250 [ 13.245677][ T89] alloc_buf.isra.0+0x4b/0x260 [ 13.245681][ T89] put_chars+0x1e1/0x2f0 [ 13.245684][ T89] ? __send_to_port+0x420/0x420 [ 13.245686][ T89] ? rcu_lockdep_current_cpu_online+0x3f/0x1b0 [ 13.245690][ T89] ? validate_chain+0x38b/0xc20 [ 13.245695][ T89] hvc_console_print+0x292/0x780 [ 13.245702][ T89] ? hvc_write+0x3a0/0x3a0 [ 13.245705][ T89] ? rcu_is_watching+0x16/0xd0 [ 13.245707][ T89] ? lock_acquire+0x13c/0x160 [ 13.245711][ T89] console_emit_next_record+0x22f/0x4c0 [ 13.245714][ T89] ? devkmsg_read+0x4b0/0x4b0 [ 13.245716][ T89] ? console_flush_one_record+0x106/0x710 [ 13.245719][ T89] ? rcu_is_watching+0x16/0xd0 [ 13.245721][ T89] ? lock_acquire+0x13c/0x160 [ 13.245725][ T89] console_flush_one_record+0x46f/0x710 [ 13.245729][ T89] ? console_emit_next_record+0x4c0/0x4c0 [ 13.245730][ T89] ? __lock_acquire+0x518/0xc20 [ 13.245735][ T89] console_unlock+0xee/0x1f0 [ 13.245738][ T89] ? console_flush_one_record+0x710/0x710 [ 13.245739][ T89] ? rcu_is_watching+0x16/0xd0 [ 13.245741][ T89] ? lock_acquire+0x60/0x160 [ 13.245745][ T89] ? __down_trylock_console_sem+0x5e/0xa0 [ 13.245746][ T89] ? vprintk_emit+0x320/0x3e0 [ 13.245749][ T89] vprintk_emit+0x37c/0x3e0 [ 13.245753][ T89] ? wake_up_klogd_work_func+0x90/0x90 [ 13.245756][ T89] ? __lock_acquire+0x518/0xc20 [ 13.245759][ T89] _printk+0xc7/0x100 [ 13.245763][ T89] ? snapshot_read.cold+0x21/0x21 [ 13.245766][ T89] ? do_raw_spin_lock+0x131/0x280 [ 13.245768][ T89] ? __rwlock_init+0x150/0x150 [ 13.245772][ T89] ? do_raw_spin_lock+0x131/0x280 [ 13.245774][ T89] do_exit.cold+0x82/0x9c [ 13.245778][ T89] ? exit_notify+0x890/0x890 [ 13.245780][ T89] ? __lock_release.isra.0+0x69/0x1a0 [ 13.245782][ T89] ? rcu_is_watching+0x16/0xd0 [ 13.245786][ T89] do_group_exit+0xb8/0x370 [ 13.245789][ T89] __x64_sys_exit_group+0x3c/0x50 [ 13.245792][ T89] x64_sys_call+0x1567/0x1570 [ 13.245794][ T89] do_syscall_64+0xff/0x530 [ 13.245798][ T89] ? exc_page_fault+0xee/0x100 [ 13.245801][ T89] entry_SYSCALL_64_after_hwframe+0x4b/0x53 [ 13.245803][ T89] RIP: 0033:0x7fe34b0101b8 [ 13.245805][ T89] Code: Unable to access opcode bytes at 0x7fe34b01018e. [ 13.245806][ T89] RSP: 002b:00007ffee6e757c8 EFLAGS: 00000256 ORIG_RAX: 00000000000000e7 [ 13.245809][ T89] RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 00007fe34b0101b8 [ 13.245810][ T89] RDX: 0000000000000000 RSI: fffffffffffffe90 RDI: 0000000000000000 [ 13.245811][ T89] RBP: 00007ffee6e75950 R08: 00005603f7e4cb38 R09: 0000000000000000 [ 13.245812][ T89] R10: 0000000000000000 R11: 0000000000000256 R12: 0000000000000000 [ 13.245813][ T89] R13: 00007fe34a86e050 R14: 00007fe34b541d9e R15: 00005603f7cf14b0 [ 13.245820][ T89]