[ 18.062498][ T183] (udev-worker) (183) used greatest stack depth: 22696 bytes left [ 18.062516][ T183] BUG: sleeping function called from invalid context at ./include/linux/sched/mm.h:322 [ 18.062519][ T183] in_atomic(): 1, irqs_disabled(): 1, non_block: 0, pid: 183, name: (udev-worker) [ 18.062520][ T183] preempt_count: 2, expected: 0 [ 18.062521][ T183] RCU nest depth: 0, expected: 0 [ 18.062522][ T183] INFO: lockdep is turned off. [ 18.062523][ T183] irq event stamp: 297510 [ 18.062524][ T183] hardirqs last enabled at (297509): [] _raw_spin_unlock_irq+0x28/0x50 [ 18.062533][ T183] hardirqs last disabled at (297510): [] __schedule+0x1246/0x20e0 [ 18.062536][ T183] softirqs last enabled at (297446): [] unix_release_sock+0x446/0xe50 [ 18.062538][ T183] softirqs last disabled at (297444): [] unix_release_sock+0x39f/0xe50 [ 18.062541][ T183] Preemption disabled at: [ 18.062541][ T183] [<0000000000000000>] 0x0 [ 18.062547][ T183] CPU: 1 UID: 0 PID: 183 Comm: (udev-worker) Tainted: G W 7.2.0-virtme #1 PREEMPT(full) [ 18.062550][ T183] Tainted: [W]=WARN [ 18.062551][ T183] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011 [ 18.062553][ T183] Call Trace: [ 18.062555][ T183] [ 18.062556][ T183] dump_stack_lvl+0x6f/0xa0 [ 18.062562][ T183] __might_resched.cold+0x1fe/0x2c1 [ 18.062566][ T183] ? perf_trace_sched_switch+0x7c0/0x7c0 [ 18.062570][ T183] ? rcu_is_watching+0x16/0xd0 [ 18.062574][ T183] __kmalloc_noprof+0x443/0x760 [ 18.062578][ T183] ? __rwlock_init+0x150/0x150 [ 18.062581][ T183] ? alloc_buf.isra.0+0x4b/0x260 [ 18.062586][ T183] ? do_raw_spin_unlock+0x59/0x250 [ 18.062588][ T183] alloc_buf.isra.0+0x4b/0x260 [ 18.062590][ T183] put_chars+0x1e1/0x2f0 [ 18.062592][ T183] ? __send_to_port+0x420/0x420 [ 18.062594][ T183] ? printk_get_next_message+0x2fe/0x7d0 [ 18.062597][ T183] ? console_prepend_replay+0x20/0x20 [ 18.062599][ T183] ? desc_read+0x219/0x2f0 [ 18.062601][ T183] hvc_console_print+0x292/0x780 [ 18.062605][ T183] ? hvc_write+0x3a0/0x3a0 [ 18.062607][ T183] ? __rwlock_init+0x150/0x150 [ 18.062609][ T183] ? rcu_is_watching+0x16/0xd0 [ 18.062610][ T183] ? rcu_is_watching+0x16/0xd0 [ 18.062611][ T183] ? lock_acquire+0x13c/0x160 [ 18.062614][ T183] console_emit_next_record+0x252/0x4f0 [ 18.062617][ T183] ? devkmsg_read+0x4e0/0x4e0 [ 18.062618][ T183] ? _prb_read_valid+0x6e0/0x6e0 [ 18.062620][ T183] ? __asan_memmove+0x3c/0x60 [ 18.062623][ T183] ? rcu_is_watching+0x16/0xd0 [ 18.062624][ T183] ? rcu_is_watching+0x16/0xd0 [ 18.062625][ T183] ? rcu_is_watching+0x16/0xd0 [ 18.062626][ T183] ? lock_acquire+0x13c/0x160 [ 18.062628][ T183] ? console_flush_one_record+0x111/0x710 [ 18.062630][ T183] console_flush_one_record+0x46f/0x710 [ 18.062632][ T183] ? console_emit_next_record+0x4f0/0x4f0 [ 18.062635][ T183] console_unlock+0xee/0x1f0 [ 18.062637][ T183] ? lock_acquire+0x13c/0x160 [ 18.062639][ T183] ? console_flush_one_record+0x710/0x710 [ 18.062641][ T183] ? rcu_is_watching+0x16/0xd0 [ 18.062642][ T183] ? lock_release+0x184/0x1f0 [ 18.062643][ T183] ? lock_acquire+0x60/0x160 [ 18.062645][ T183] ? sync_exp_reset_tree_hotplug+0x3a0/0x3f0 [ 18.062647][ T183] ? __down_trylock_console_sem+0x5e/0xa0 [ 18.062649][ T183] ? vprintk_emit+0x320/0x3e0 [ 18.062650][ T183] vprintk_emit+0x37c/0x3e0 [ 18.062652][ T183] ? wake_up_klogd_work_func+0x90/0x90 [ 18.062654][ T183] ? do_raw_read_unlock+0x70/0x70 [ 18.062655][ T183] ? forget_original_parent+0x5c/0xdb0 [ 18.062659][ T183] _printk+0xc7/0x100 [ 18.062662][ T183] ? snapshot_read.cold+0x21/0x21 [ 18.062663][ T183] ? do_raw_spin_lock+0x131/0x280 [ 18.062665][ T183] ? do_raw_spin_lock+0x131/0x280 [ 18.062667][ T183] ? __rwlock_init+0x150/0x150 [ 18.062669][ T183] ? do_raw_spin_lock+0x131/0x280 [ 18.062671][ T183] do_exit.cold+0x82/0x9c [ 18.062674][ T183] ? vfs_read+0x3dd/0x7b0 [ 18.062676][ T183] ? exit_notify+0x890/0x890 [ 18.062678][ T183] ? posixtimer_sig_unignore.isra.0+0x5f0/0x5f0 [ 18.062680][ T183] ? rcu_is_watching+0x16/0xd0 [ 18.062682][ T183] do_group_exit+0xb8/0x370 [ 18.062684][ T183] __x64_sys_exit_group+0x3c/0x50 [ 18.062685][ T183] x64_sys_call+0x1567/0x1570 [ 18.062687][ T183] do_syscall_64+0xff/0x530 [ 18.062690][ T183] ? irq_exit_rcu+0x1a/0x30 [ 18.062692][ T183] entry_SYSCALL_64_after_hwframe+0x4b/0x53 [ 18.062695][ T183] RIP: 0033:0x7fec09d651b8 [ 18.062697][ T183] Code: Unable to access opcode bytes at 0x7fec09d6518e. [ 18.062698][ T183] RSP: 002b:00007ffddf061ca8 EFLAGS: 00000256 ORIG_RAX: 00000000000000e7 [ 18.062701][ T183] RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 00007fec09d651b8 [ 18.062703][ T183] RDX: 0000000000000000 RSI: fffffffffffffe90 RDI: 0000000000000000 [ 18.062704][ T183] RBP: 00007ffddf061e30 R08: 0000556ae7079158 R09: 0000000000000000 [ 18.062704][ T183] R10: 0000000000000000 R11: 0000000000000256 R12: 0000000000000000 [ 18.062705][ T183] R13: 00007fec095c3050 R14: 00007fec0a296d9e R15: 0000556ae6f06720 [ 18.062707][ T183]