[ 14.270945][ T87] (udev-worker) (87) used greatest stack depth: 22696 bytes left [ 14.270966][ T87] BUG: sleeping function called from invalid context at ./include/linux/sched/mm.h:322 [ 14.270970][ T87] in_atomic(): 1, irqs_disabled(): 1, non_block: 0, pid: 87, name: (udev-worker) [ 14.270975][ T87] preempt_count: 2, expected: 0 [ 14.270976][ T87] RCU nest depth: 0, expected: 0 [ 14.270978][ T87] INFO: lockdep is turned off. [ 14.270979][ T87] irq event stamp: 0 [ 14.270981][ T87] hardirqs last enabled at (0): [<0000000000000000>] 0x0 [ 14.270989][ T87] hardirqs last disabled at (0): [] copy_process+0x1ccd/0x6240 [ 14.270998][ T87] softirqs last enabled at (0): [] copy_process+0x1d21/0x6240 [ 14.271001][ T87] softirqs last disabled at (0): [<0000000000000000>] 0x0 [ 14.271003][ T87] Preemption disabled at: [ 14.271004][ T87] [<0000000000000000>] 0x0 [ 14.271011][ T87] CPU: 1 UID: 0 PID: 87 Comm: (udev-worker) Tainted: G W 7.2.0-virtme #1 PREEMPT(full) [ 14.271018][ T87] Tainted: [W]=WARN [ 14.271020][ T87] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011 [ 14.271023][ T87] Call Trace: [ 14.271027][ T87] [ 14.271029][ T87] dump_stack_lvl+0x6f/0xa0 [ 14.271040][ T87] __might_resched.cold+0x1fe/0x2c1 [ 14.271045][ T87] ? perf_trace_sched_switch+0x7c0/0x7c0 [ 14.271049][ T87] ? __asan_memcpy+0x3c/0x60 [ 14.271054][ T87] ? rcu_is_watching+0x16/0xd0 [ 14.271058][ T87] __kmalloc_noprof+0x443/0x760 [ 14.271062][ T87] ? __rwlock_init+0x150/0x150 [ 14.271065][ T87] ? alloc_buf.isra.0+0x4b/0x260 [ 14.271071][ T87] ? do_raw_spin_unlock+0x59/0x250 [ 14.271073][ T87] alloc_buf.isra.0+0x4b/0x260 [ 14.271086][ T87] put_chars+0x1e1/0x2f0 [ 14.271093][ T87] ? __send_to_port+0x420/0x420 [ 14.271098][ T87] ? console_prepend_replay+0x20/0x20 [ 14.271106][ T87] hvc_console_print+0x292/0x780 [ 14.271115][ T87] ? hvc_write+0x3a0/0x3a0 [ 14.271120][ T87] ? rcu_is_watching+0x16/0xd0 [ 14.271122][ T87] ? lock_acquire+0x13c/0x160 [ 14.271125][ T87] console_emit_next_record+0x22f/0x4c0 [ 14.271129][ T87] ? devkmsg_read+0x4b0/0x4b0 [ 14.271131][ T87] ? rcu_is_watching+0x16/0xd0 [ 14.271134][ T87] ? rcu_is_watching+0x16/0xd0 [ 14.271136][ T87] ? rcu_is_watching+0x16/0xd0 [ 14.271138][ T87] ? lock_acquire+0x13c/0x160 [ 14.271141][ T87] ? console_flush_one_record+0x111/0x710 [ 14.271143][ T87] console_flush_one_record+0x46f/0x710 [ 14.271146][ T87] ? console_emit_next_record+0x4c0/0x4c0 [ 14.271150][ T87] console_unlock+0xee/0x1f0 [ 14.271152][ T87] ? lock_acquire+0x13c/0x160 [ 14.271154][ T87] ? console_flush_one_record+0x710/0x710 [ 14.271157][ T87] ? rcu_is_watching+0x16/0xd0 [ 14.271159][ T87] ? lock_release+0x184/0x1f0 [ 14.271161][ T87] ? lock_acquire+0x60/0x160 [ 14.271163][ T87] ? __rcu_read_lock+0x30/0x70 [ 14.271166][ T87] ? __down_trylock_console_sem+0x5e/0xa0 [ 14.271168][ T87] ? vprintk_emit+0x320/0x3e0 [ 14.271171][ T87] vprintk_emit+0x37c/0x3e0 [ 14.271174][ T87] ? wake_up_klogd_work_func+0x90/0x90 [ 14.271177][ T87] ? do_raw_read_unlock+0x70/0x70 [ 14.271179][ T87] ? forget_original_parent+0x5c/0xdb0 [ 14.271184][ T87] _printk+0xc7/0x100 [ 14.271191][ T87] ? snapshot_read.cold+0x21/0x21 [ 14.271195][ T87] ? do_raw_spin_lock+0x131/0x280 [ 14.271201][ T87] ? do_raw_spin_lock+0x131/0x280 [ 14.271203][ T87] ? __rwlock_init+0x150/0x150 [ 14.271208][ T87] ? do_raw_spin_lock+0x131/0x280 [ 14.271213][ T87] do_exit.cold+0x82/0x9c [ 14.271217][ T87] ? vfs_read+0x3dd/0x7b0 [ 14.271221][ T87] ? exit_notify+0x890/0x890 [ 14.271224][ T87] ? posixtimer_sig_unignore.isra.0+0x5f0/0x5f0 [ 14.271227][ T87] ? rcu_is_watching+0x16/0xd0 [ 14.271231][ T87] do_group_exit+0xb8/0x370 [ 14.271234][ T87] __x64_sys_exit_group+0x3c/0x50 [ 14.271237][ T87] x64_sys_call+0x1567/0x1570 [ 14.271240][ T87] do_syscall_64+0xff/0x530 [ 14.271245][ T87] ? irq_exit_rcu+0x1a/0x30 [ 14.271248][ T87] entry_SYSCALL_64_after_hwframe+0x4b/0x53 [ 14.271251][ T87] RIP: 0033:0x7f8beacd71b8 [ 14.271255][ T87] Code: Unable to access opcode bytes at 0x7f8beacd718e. [ 14.271257][ T87] RSP: 002b:00007ffe31613638 EFLAGS: 00000256 ORIG_RAX: 00000000000000e7 [ 14.271261][ T87] RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 00007f8beacd71b8 [ 14.271264][ T87] RDX: 0000000000000000 RSI: fffffffffffffe90 RDI: 0000000000000000 [ 14.271265][ T87] RBP: 00007ffe316137c0 R08: 000055e6ddde7cb8 R09: 0000000000000000 [ 14.271267][ T87] R10: 0000000000000000 R11: 0000000000000256 R12: 0000000000000000 [ 14.271268][ T87] R13: 00007f8bea535050 R14: 00007f8beb208d9e R15: 000055e6ddc85030 [ 14.271272][ T87]