[ 13.945411][ T84] (udev-worker) (84) used greatest stack depth: 22696 bytes left [ 13.945432][ T84] BUG: sleeping function called from invalid context at ./include/linux/sched/mm.h:322 [ 13.945434][ T84] in_atomic(): 1, irqs_disabled(): 1, non_block: 0, pid: 84, name: (udev-worker) [ 13.945436][ T84] preempt_count: 2, expected: 0 [ 13.945437][ T84] RCU nest depth: 0, expected: 0 [ 13.945438][ T84] locks held by (udev-worker)/84: 5, last CPU#2: [ 13.945440][ T84] #0: ffffffff9b8027b8 (low_water_lock){+.+.}-{3:3}, at: do_exit+0x887/0xdc0 [ 13.945453][ T84] #1: ffffffff9b999cc0 (console_lock){+.+.}-{0:0}, at: vprintk_emit+0x320/0x3e0 [ 13.945458][ T84] #2: ffffffff9b999d38 (console_srcu){....}-{0:0}, at: console_flush_one_record+0x106/0x710 [ 13.945462][ T84] #3: ffffffff9b889660 (console_owner){....}-{0:0}, at: console_lock_spinning_enable+0x40/0x60 [ 13.945465][ T84] #4: ffffffff9b889560 (printk_legacy_map-wait-type-override){....}-{3:3}, at: console_emit_next_record+0x202/0x4f0 [ 13.945469][ T84] irq event stamp: 420646 [ 13.945470][ T84] hardirqs last enabled at (420645): [] __down_trylock_console_sem+0x86/0xa0 [ 13.945472][ T84] hardirqs last disabled at (420646): [] console_emit_next_record+0x3f8/0x4f0 [ 13.945474][ T84] softirqs last enabled at (420582): [] netlink_release+0x17b/0xcf0 [ 13.945477][ T84] softirqs last disabled at (420580): [] netlink_release+0xd2/0xcf0 [ 13.945480][ T84] Preemption disabled at: [ 13.945481][ T84] [<0000000000000000>] 0x0 [ 13.945487][ T84] CPU: 2 UID: 0 PID: 84 Comm: (udev-worker) Tainted: G W 7.2.0-virtme #1 PREEMPT(full) [ 13.945490][ T84] Tainted: [W]=WARN [ 13.945491][ T84] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011 [ 13.945493][ T84] Call Trace: [ 13.945495][ T84] [ 13.945496][ T84] dump_stack_lvl+0x6f/0xa0 [ 13.945502][ T84] __might_resched.cold+0x1fe/0x2c1 [ 13.945507][ T84] ? perf_trace_sched_switch+0x7c0/0x7c0 [ 13.945510][ T84] ? __kmalloc_noprof+0xdb/0x760 [ 13.945515][ T84] __kmalloc_noprof+0x443/0x760 [ 13.945517][ T84] ? alloc_buf.isra.0+0x4b/0x260 [ 13.945522][ T84] ? do_raw_spin_unlock+0x59/0x250 [ 13.945525][ T84] alloc_buf.isra.0+0x4b/0x260 [ 13.945528][ T84] put_chars+0x1e1/0x2f0 [ 13.945531][ T84] ? __send_to_port+0x420/0x420 [ 13.945532][ T84] ? printk_get_next_message+0x2fe/0x7d0 [ 13.945536][ T84] ? rcu_read_lock_any_held+0x3c/0x90 [ 13.945539][ T84] ? validate_chain+0x38b/0xc20 [ 13.945543][ T84] hvc_console_print+0x292/0x780 [ 13.945546][ T84] ? __lock_acquire+0x518/0xc20 [ 13.945547][ T84] ? __lock_acquire+0x518/0xc20 [ 13.945551][ T84] ? hvc_write+0x3a0/0x3a0 [ 13.945554][ T84] ? rcu_is_watching+0x16/0xd0 [ 13.945557][ T84] ? lock_acquire+0x13c/0x160 [ 13.945561][ T84] console_emit_next_record+0x252/0x4f0 [ 13.945564][ T84] ? devkmsg_read+0x4e0/0x4e0 [ 13.945568][ T84] ? rcu_is_watching+0x16/0xd0 [ 13.945570][ T84] ? lock_acquire+0x13c/0x160 [ 13.945574][ T84] console_flush_one_record+0x46f/0x710 [ 13.945578][ T84] ? console_emit_next_record+0x4f0/0x4f0 [ 13.945580][ T84] ? __lock_acquire+0x518/0xc20 [ 13.945584][ T84] console_unlock+0xee/0x1f0 [ 13.945587][ T84] ? console_flush_one_record+0x710/0x710 [ 13.945588][ T84] ? rcu_is_watching+0x16/0xd0 [ 13.945590][ T84] ? lock_acquire+0x60/0x160 [ 13.945594][ T84] ? __down_trylock_console_sem+0x5e/0xa0 [ 13.945595][ T84] ? vprintk_emit+0x320/0x3e0 [ 13.945598][ T84] vprintk_emit+0x37c/0x3e0 [ 13.945602][ T84] ? wake_up_klogd_work_func+0x90/0x90 [ 13.945605][ T84] ? __lock_acquire+0x518/0xc20 [ 13.945608][ T84] _printk+0xc7/0x100 [ 13.945612][ T84] ? snapshot_read.cold+0x21/0x21 [ 13.945614][ T84] ? do_raw_spin_lock+0x131/0x280 [ 13.945617][ T84] ? __rwlock_init+0x150/0x150 [ 13.945620][ T84] ? do_raw_spin_lock+0x131/0x280 [ 13.945623][ T84] do_exit.cold+0x82/0x9c [ 13.945626][ T84] ? exit_notify+0x890/0x890 [ 13.945628][ T84] ? __lock_release.isra.0+0x69/0x1a0 [ 13.945630][ T84] ? rcu_is_watching+0x16/0xd0 [ 13.945634][ T84] do_group_exit+0xb8/0x370 [ 13.945638][ T84] __x64_sys_exit_group+0x3c/0x50 [ 13.945640][ T84] x64_sys_call+0x1567/0x1570 [ 13.945642][ T84] do_syscall_64+0xff/0x530 [ 13.945645][ T84] ? exc_page_fault+0xee/0x100 [ 13.945649][ T84] entry_SYSCALL_64_after_hwframe+0x4b/0x53 [ 13.945651][ T84] RIP: 0033:0x7f41a87b51b8 [ 13.945653][ T84] Code: Unable to access opcode bytes at 0x7f41a87b518e. [ 13.945654][ T84] RSP: 002b:00007ffd805bd668 EFLAGS: 00000256 ORIG_RAX: 00000000000000e7 [ 13.945657][ T84] RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 00007f41a87b51b8 [ 13.945658][ T84] RDX: 0000000000000000 RSI: fffffffffffffe90 RDI: 0000000000000000 [ 13.945659][ T84] RBP: 00007ffd805bd7f0 R08: 000055e4abd8a7c8 R09: 0000000000000000 [ 13.945660][ T84] R10: 0000000000000000 R11: 0000000000000256 R12: 0000000000000000 [ 13.945660][ T84] R13: 00007f41a8013050 R14: 00007f41a8ce6d9e R15: 000055e4abc341a0 [ 13.945667][ T84]