[ 17.301538][ T89] (udev-worker) (89) used greatest stack depth: 22696 bytes left [ 17.301560][ T89] BUG: sleeping function called from invalid context at ./include/linux/sched/mm.h:322 [ 17.301562][ T89] in_atomic(): 1, irqs_disabled(): 1, non_block: 0, pid: 89, name: (udev-worker) [ 17.301564][ T89] preempt_count: 2, expected: 0 [ 17.301565][ T89] RCU nest depth: 0, expected: 0 [ 17.301566][ T89] locks held by (udev-worker)/89: 5, last CPU#2: [ 17.301568][ T89] #0: ffffffff86a027b8 (low_water_lock){+.+.}-{3:3}, at: do_exit+0x887/0xdc0 [ 17.301581][ T89] #1: ffffffff86b99cc0 (console_lock){+.+.}-{0:0}, at: vprintk_emit+0x320/0x3e0 [ 17.301587][ T89] #2: ffffffff86b99d38 (console_srcu){....}-{0:0}, at: console_flush_one_record+0x106/0x710 [ 17.301591][ T89] #3: ffffffff86a89660 (console_owner){....}-{0:0}, at: console_lock_spinning_enable+0x40/0x60 [ 17.301595][ T89] #4: ffffffff86a89560 (printk_legacy_map-wait-type-override){....}-{3:3}, at: console_emit_next_record+0x202/0x4f0 [ 17.301598][ T89] irq event stamp: 921650 [ 17.301599][ T89] hardirqs last enabled at (921649): [] __down_trylock_console_sem+0x86/0xa0 [ 17.301602][ T89] hardirqs last disabled at (921650): [] console_emit_next_record+0x3f8/0x4f0 [ 17.301604][ T89] softirqs last enabled at (921586): [] netlink_release+0x17b/0xcf0 [ 17.301608][ T89] softirqs last disabled at (921584): [] netlink_release+0xd2/0xcf0 [ 17.301610][ T89] Preemption disabled at: [ 17.301611][ T89] [<0000000000000000>] 0x0 [ 17.301618][ T89] CPU: 2 UID: 0 PID: 89 Comm: (udev-worker) Tainted: G W 7.2.0-virtme #1 PREEMPT(full) [ 17.301622][ T89] Tainted: [W]=WARN [ 17.301623][ T89] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011 [ 17.301625][ T89] Call Trace: [ 17.301627][ T89] [ 17.301628][ T89] dump_stack_lvl+0x6f/0xa0 [ 17.301634][ T89] __might_resched.cold+0x1fe/0x2c1 [ 17.301639][ T89] ? perf_trace_sched_switch+0x7c0/0x7c0 [ 17.301644][ T89] ? __kmalloc_noprof+0xdb/0x760 [ 17.301651][ T89] __kmalloc_noprof+0x443/0x760 [ 17.301654][ T89] ? alloc_buf.isra.0+0x4b/0x260 [ 17.301659][ T89] ? do_raw_spin_unlock+0x59/0x250 [ 17.301662][ T89] alloc_buf.isra.0+0x4b/0x260 [ 17.301665][ T89] put_chars+0x1e1/0x2f0 [ 17.301668][ T89] ? __send_to_port+0x420/0x420 [ 17.301669][ T89] ? printk_get_next_message+0x2fe/0x7d0 [ 17.301672][ T89] ? rcu_read_lock_any_held+0x3c/0x90 [ 17.301675][ T89] ? validate_chain+0x38b/0xc20 [ 17.301679][ T89] hvc_console_print+0x292/0x780 [ 17.301682][ T89] ? __lock_acquire+0x518/0xc20 [ 17.301683][ T89] ? __lock_acquire+0x518/0xc20 [ 17.301687][ T89] ? hvc_write+0x3a0/0x3a0 [ 17.301690][ T89] ? rcu_is_watching+0x16/0xd0 [ 17.301693][ T89] ? lock_acquire+0x13c/0x160 [ 17.301697][ T89] console_emit_next_record+0x252/0x4f0 [ 17.301701][ T89] ? devkmsg_read+0x4e0/0x4e0 [ 17.301705][ T89] ? rcu_is_watching+0x16/0xd0 [ 17.301707][ T89] ? lock_acquire+0x13c/0x160 [ 17.301710][ T89] console_flush_one_record+0x46f/0x710 [ 17.301714][ T89] ? console_emit_next_record+0x4f0/0x4f0 [ 17.301716][ T89] ? __lock_acquire+0x518/0xc20 [ 17.301721][ T89] console_unlock+0xee/0x1f0 [ 17.301723][ T89] ? console_flush_one_record+0x710/0x710 [ 17.301725][ T89] ? rcu_is_watching+0x16/0xd0 [ 17.301727][ T89] ? lock_acquire+0x60/0x160 [ 17.301730][ T89] ? __down_trylock_console_sem+0x5e/0xa0 [ 17.301732][ T89] ? vprintk_emit+0x320/0x3e0 [ 17.301735][ T89] vprintk_emit+0x37c/0x3e0 [ 17.301738][ T89] ? wake_up_klogd_work_func+0x90/0x90 [ 17.301741][ T89] ? __lock_acquire+0x518/0xc20 [ 17.301745][ T89] _printk+0xc7/0x100 [ 17.301748][ T89] ? snapshot_read.cold+0x21/0x21 [ 17.301751][ T89] ? do_raw_spin_lock+0x131/0x280 [ 17.301753][ T89] ? __rwlock_init+0x150/0x150 [ 17.301757][ T89] ? do_raw_spin_lock+0x131/0x280 [ 17.301759][ T89] do_exit.cold+0x82/0x9c [ 17.301763][ T89] ? exit_notify+0x890/0x890 [ 17.301765][ T89] ? __lock_release.isra.0+0x69/0x1a0 [ 17.301767][ T89] ? rcu_is_watching+0x16/0xd0 [ 17.301771][ T89] do_group_exit+0xb8/0x370 [ 17.301779][ T89] __x64_sys_exit_group+0x3c/0x50 [ 17.301781][ T89] x64_sys_call+0x1567/0x1570 [ 17.301783][ T89] do_syscall_64+0xff/0x530 [ 17.301787][ T89] ? irq_exit_rcu+0x1a/0x30 [ 17.301790][ T89] entry_SYSCALL_64_after_hwframe+0x4b/0x53 [ 17.301792][ T89] RIP: 0033:0x7f32ccafc1b8 [ 17.301795][ T89] Code: Unable to access opcode bytes at 0x7f32ccafc18e. [ 17.301796][ T89] RSP: 002b:00007ffe2be60b18 EFLAGS: 00000256 ORIG_RAX: 00000000000000e7 [ 17.301799][ T89] RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 00007f32ccafc1b8 [ 17.301800][ T89] RDX: 0000000000000000 RSI: fffffffffffffe90 RDI: 0000000000000000 [ 17.301801][ T89] RBP: 00007ffe2be60ca0 R08: 000055d787148c28 R09: 0000000000000000 [ 17.301802][ T89] R10: 0000000000000000 R11: 0000000000000256 R12: 0000000000000000 [ 17.301803][ T89] R13: 00007f32cc35a050 R14: 00007f32cd02dd9e R15: 000055d786fe7fd0 [ 17.301809][ T89]