[ 14.309411][ T84] (udev-worker) (84) used greatest stack depth: 22696 bytes left [ 14.309431][ T84] BUG: sleeping function called from invalid context at ./include/linux/sched/mm.h:322 [ 14.309433][ T84] in_atomic(): 1, irqs_disabled(): 1, non_block: 0, pid: 84, name: (udev-worker) [ 14.309435][ T84] preempt_count: 2, expected: 0 [ 14.309436][ T84] RCU nest depth: 0, expected: 0 [ 14.309437][ T84] locks held by (udev-worker)/84: 5, last CPU#3: [ 14.309439][ T84] #0: ffffffff8be027b8 (low_water_lock){+.+.}-{3:3}, at: do_exit+0x887/0xdc0 [ 14.309452][ T84] #1: ffffffff8bf69cc0 (console_lock){+.+.}-{0:0}, at: vprintk_emit+0x320/0x3e0 [ 14.309458][ T84] #2: ffffffff8bf69d38 (console_srcu){....}-{0:0}, at: console_flush_one_record+0x106/0x710 [ 14.309462][ T84] #3: ffffffff8be89660 (console_owner){....}-{0:0}, at: console_lock_spinning_enable+0x40/0x60 [ 14.309465][ T84] #4: ffffffff8be89560 (printk_legacy_map-wait-type-override){....}-{3:3}, at: console_emit_next_record+0x1df/0x4c0 [ 14.309470][ T84] irq event stamp: 447564 [ 14.309471][ T84] hardirqs last enabled at (447563): [] __down_trylock_console_sem+0x86/0xa0 [ 14.309473][ T84] hardirqs last disabled at (447564): [] console_emit_next_record+0x3d4/0x4c0 [ 14.309475][ T84] softirqs last enabled at (447500): [] netlink_release+0x17b/0xcf0 [ 14.309479][ T84] softirqs last disabled at (447498): [] netlink_release+0xd2/0xcf0 [ 14.309481][ T84] Preemption disabled at: [ 14.309482][ T84] [<0000000000000000>] 0x0 [ 14.309489][ T84] CPU: 3 UID: 0 PID: 84 Comm: (udev-worker) Tainted: G W 7.2.0-virtme #1 PREEMPT(full) [ 14.309493][ T84] Tainted: [W]=WARN [ 14.309494][ T84] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011 [ 14.309495][ T84] Call Trace: [ 14.309497][ T84] [ 14.309498][ T84] dump_stack_lvl+0x6f/0xa0 [ 14.309504][ T84] __might_resched.cold+0x1fe/0x2c1 [ 14.309509][ T84] ? perf_trace_sched_switch+0x7c0/0x7c0 [ 14.309513][ T84] ? __kmalloc_noprof+0xdb/0x760 [ 14.309518][ T84] __kmalloc_noprof+0x443/0x760 [ 14.309520][ T84] ? alloc_buf.isra.0+0x4b/0x260 [ 14.309526][ T84] ? do_raw_spin_unlock+0x59/0x250 [ 14.309529][ T84] alloc_buf.isra.0+0x4b/0x260 [ 14.309533][ T84] put_chars+0x1e1/0x2f0 [ 14.309536][ T84] ? __send_to_port+0x420/0x420 [ 14.309538][ T84] ? rcu_lockdep_current_cpu_online+0x3f/0x1b0 [ 14.309542][ T84] ? validate_chain+0x38b/0xc20 [ 14.309547][ T84] hvc_console_print+0x292/0x780 [ 14.309555][ T84] ? hvc_write+0x3a0/0x3a0 [ 14.309558][ T84] ? rcu_is_watching+0x16/0xd0 [ 14.309560][ T84] ? lock_acquire+0x13c/0x160 [ 14.309565][ T84] console_emit_next_record+0x22f/0x4c0 [ 14.309569][ T84] ? devkmsg_read+0x4b0/0x4b0 [ 14.309571][ T84] ? console_flush_one_record+0x106/0x710 [ 14.309574][ T84] ? rcu_is_watching+0x16/0xd0 [ 14.309576][ T84] ? lock_acquire+0x13c/0x160 [ 14.309580][ T84] console_flush_one_record+0x46f/0x710 [ 14.309584][ T84] ? console_emit_next_record+0x4c0/0x4c0 [ 14.309586][ T84] ? __lock_acquire+0x518/0xc20 [ 14.309591][ T84] console_unlock+0xee/0x1f0 [ 14.309594][ T84] ? console_flush_one_record+0x710/0x710 [ 14.309595][ T84] ? rcu_is_watching+0x16/0xd0 [ 14.309597][ T84] ? lock_acquire+0x60/0x160 [ 14.309601][ T84] ? __down_trylock_console_sem+0x5e/0xa0 [ 14.309603][ T84] ? vprintk_emit+0x320/0x3e0 [ 14.309606][ T84] vprintk_emit+0x37c/0x3e0 [ 14.309610][ T84] ? wake_up_klogd_work_func+0x90/0x90 [ 14.309614][ T84] ? __lock_acquire+0x518/0xc20 [ 14.309617][ T84] _printk+0xc7/0x100 [ 14.309621][ T84] ? snapshot_read.cold+0x21/0x21 [ 14.309624][ T84] ? do_raw_spin_lock+0x131/0x280 [ 14.309627][ T84] ? __rwlock_init+0x150/0x150 [ 14.309631][ T84] ? do_raw_spin_lock+0x131/0x280 [ 14.309634][ T84] do_exit.cold+0x82/0x9c [ 14.309638][ T84] ? exit_notify+0x890/0x890 [ 14.309640][ T84] ? __lock_release.isra.0+0x69/0x1a0 [ 14.309643][ T84] ? rcu_is_watching+0x16/0xd0 [ 14.309647][ T84] do_group_exit+0xb8/0x370 [ 14.309651][ T84] __x64_sys_exit_group+0x3c/0x50 [ 14.309654][ T84] x64_sys_call+0x1567/0x1570 [ 14.309656][ T84] do_syscall_64+0xff/0x530 [ 14.309659][ T84] ? irq_exit_rcu+0x1a/0x30 [ 14.309663][ T84] entry_SYSCALL_64_after_hwframe+0x4b/0x53 [ 14.309666][ T84] RIP: 0033:0x7f9c714301b8 [ 14.309668][ T84] Code: Unable to access opcode bytes at 0x7f9c7143018e. [ 14.309669][ T84] RSP: 002b:00007ffd37e59248 EFLAGS: 00000256 ORIG_RAX: 00000000000000e7 [ 14.309672][ T84] RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 00007f9c714301b8 [ 14.309673][ T84] RDX: 0000000000000000 RSI: fffffffffffffe90 RDI: 0000000000000000 [ 14.309674][ T84] RBP: 00007ffd37e593d0 R08: 0000557cf56775d8 R09: 0000000000000000 [ 14.309675][ T84] R10: 0000000000000000 R11: 0000000000000256 R12: 0000000000000000 [ 14.309676][ T84] R13: 00007f9c70c8e050 R14: 00007f9c71961d9e R15: 0000557cf5679850 [ 14.309684][ T84]