[ 13.520540][ T87] (udev-worker) (87) used greatest stack depth: 22696 bytes left [ 13.520555][ T87] BUG: sleeping function called from invalid context at ./include/linux/sched/mm.h:322 [ 13.520557][ T87] in_atomic(): 1, irqs_disabled(): 1, non_block: 0, pid: 87, name: (udev-worker) [ 13.520559][ T87] preempt_count: 2, expected: 0 [ 13.520559][ T87] RCU nest depth: 0, expected: 0 [ 13.520560][ T87] INFO: lockdep is turned off. [ 13.520562][ T87] irq event stamp: 226143 [ 13.520562][ T87] hardirqs last enabled at (226143): [] _raw_spin_unlock_irqrestore+0x53/0x80 [ 13.520571][ T87] hardirqs last disabled at (226142): [] _raw_spin_lock_irqsave+0x50/0x60 [ 13.520573][ T87] softirqs last enabled at (225542): [] handle_softirqs+0x67c/0x900 [ 13.520578][ T87] softirqs last disabled at (225537): [] __irq_exit_rcu+0x145/0x1c0 [ 13.520581][ T87] Preemption disabled at: [ 13.520581][ T87] [<0000000000000000>] 0x0 [ 13.520587][ T87] CPU: 0 UID: 0 PID: 87 Comm: (udev-worker) Tainted: G W 7.2.0-virtme #1 PREEMPT(full) [ 13.520591][ T87] Tainted: [W]=WARN [ 13.520592][ T87] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011 [ 13.520593][ T87] Call Trace: [ 13.520595][ T87] [ 13.520596][ T87] dump_stack_lvl+0x6f/0xa0 [ 13.520601][ T87] __might_resched.cold+0x1fe/0x2c1 [ 13.520605][ T87] ? perf_trace_sched_switch+0x7c0/0x7c0 [ 13.520608][ T87] ? rcu_is_watching+0x16/0xd0 [ 13.520611][ T87] __kmalloc_noprof+0x443/0x760 [ 13.520614][ T87] ? __rwlock_init+0x150/0x150 [ 13.520617][ T87] ? alloc_buf.isra.0+0x4b/0x260 [ 13.520620][ T87] ? do_raw_spin_unlock+0x59/0x250 [ 13.520622][ T87] alloc_buf.isra.0+0x4b/0x260 [ 13.520623][ T87] put_chars+0x1e1/0x2f0 [ 13.520625][ T87] ? __send_to_port+0x420/0x420 [ 13.520627][ T87] ? printk_get_next_message+0x2fe/0x7d0 [ 13.520629][ T87] ? console_prepend_replay+0x20/0x20 [ 13.520631][ T87] ? desc_read+0x219/0x2f0 [ 13.520633][ T87] hvc_console_print+0x292/0x780 [ 13.520636][ T87] ? hvc_write+0x3a0/0x3a0 [ 13.520638][ T87] ? __rwlock_init+0x150/0x150 [ 13.520639][ T87] ? rcu_is_watching+0x16/0xd0 [ 13.520640][ T87] ? rcu_is_watching+0x16/0xd0 [ 13.520642][ T87] ? lock_acquire+0x13c/0x160 [ 13.520643][ T87] console_emit_next_record+0x252/0x4f0 [ 13.520646][ T87] ? devkmsg_read+0x4e0/0x4e0 [ 13.520647][ T87] ? _prb_read_valid+0x6e0/0x6e0 [ 13.520649][ T87] ? __asan_memmove+0x3c/0x60 [ 13.520652][ T87] ? rcu_is_watching+0x16/0xd0 [ 13.520653][ T87] ? rcu_is_watching+0x16/0xd0 [ 13.520654][ T87] ? rcu_is_watching+0x16/0xd0 [ 13.520656][ T87] ? lock_acquire+0x13c/0x160 [ 13.520657][ T87] ? console_flush_one_record+0x111/0x710 [ 13.520658][ T87] console_flush_one_record+0x46f/0x710 [ 13.520660][ T87] ? console_emit_next_record+0x4f0/0x4f0 [ 13.520663][ T87] console_unlock+0xee/0x1f0 [ 13.520664][ T87] ? lock_acquire+0x13c/0x160 [ 13.520665][ T87] ? console_flush_one_record+0x710/0x710 [ 13.520667][ T87] ? rcu_is_watching+0x16/0xd0 [ 13.520668][ T87] ? lock_release+0x184/0x1f0 [ 13.520669][ T87] ? lock_acquire+0x60/0x160 [ 13.520670][ T87] ? sync_exp_reset_tree_hotplug+0x3a0/0x3f0 [ 13.520672][ T87] ? __down_trylock_console_sem+0x5e/0xa0 [ 13.520673][ T87] ? vprintk_emit+0x320/0x3e0 [ 13.520675][ T87] vprintk_emit+0x37c/0x3e0 [ 13.520677][ T87] ? wake_up_klogd_work_func+0x90/0x90 [ 13.520679][ T87] ? do_raw_read_unlock+0x70/0x70 [ 13.520680][ T87] ? forget_original_parent+0x5c/0xdb0 [ 13.520683][ T87] _printk+0xc7/0x100 [ 13.520686][ T87] ? snapshot_read.cold+0x21/0x21 [ 13.520687][ T87] ? do_raw_spin_lock+0x131/0x280 [ 13.520688][ T87] ? do_raw_spin_lock+0x131/0x280 [ 13.520690][ T87] ? __rwlock_init+0x150/0x150 [ 13.520692][ T87] ? do_raw_spin_lock+0x131/0x280 [ 13.520693][ T87] do_exit.cold+0x82/0x9c [ 13.520696][ T87] ? vfs_read+0x3dd/0x7b0 [ 13.520698][ T87] ? exit_notify+0x890/0x890 [ 13.520700][ T87] ? posixtimer_sig_unignore.isra.0+0x5f0/0x5f0 [ 13.520702][ T87] ? rcu_is_watching+0x16/0xd0 [ 13.520704][ T87] do_group_exit+0xb8/0x370 [ 13.520706][ T87] __x64_sys_exit_group+0x3c/0x50 [ 13.520708][ T87] x64_sys_call+0x1567/0x1570 [ 13.520710][ T87] do_syscall_64+0xff/0x530 [ 13.520712][ T87] ? exc_page_fault+0xee/0x100 [ 13.520715][ T87] entry_SYSCALL_64_after_hwframe+0x4b/0x53 [ 13.520717][ T87] RIP: 0033:0x7ff1b28e41b8 [ 13.520718][ T87] Code: Unable to access opcode bytes at 0x7ff1b28e418e. [ 13.520720][ T87] RSP: 002b:00007ffc20ab32a8 EFLAGS: 00000256 ORIG_RAX: 00000000000000e7 [ 13.520723][ T87] RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 00007ff1b28e41b8 [ 13.520725][ T87] RDX: 0000000000000000 RSI: fffffffffffffe90 RDI: 0000000000000000 [ 13.520725][ T87] RBP: 00007ffc20ab3430 R08: 000055b2d567fb08 R09: 0000000000000000 [ 13.520726][ T87] R10: 0000000000000000 R11: 0000000000000256 R12: 0000000000000000 [ 13.520727][ T87] R13: 00007ff1b2142050 R14: 00007ff1b2e15d9e R15: 000055b2d5676af0 [ 13.520729][ T87]