[ 15.000740][ T179] (udev-worker) (179) used greatest stack depth: 22696 bytes left [ 15.000760][ T179] BUG: sleeping function called from invalid context at ./include/linux/sched/mm.h:322 [ 15.000762][ T179] in_atomic(): 1, irqs_disabled(): 1, non_block: 0, pid: 179, name: (udev-worker) [ 15.000764][ T179] preempt_count: 2, expected: 0 [ 15.000765][ T179] RCU nest depth: 0, expected: 0 [ 15.000766][ T179] locks held by (udev-worker)/179: 5, last CPU#1: [ 15.000769][ T179] #0: ffffffffb08027b8 (low_water_lock){+.+.}-{3:3}, at: do_exit+0x887/0xdc0 [ 15.000781][ T179] #1: ffffffffb0999cc0 (console_lock){+.+.}-{0:0}, at: vprintk_emit+0x320/0x3e0 [ 15.000786][ T179] #2: ffffffffb0999d38 (console_srcu){....}-{0:0}, at: console_flush_one_record+0x106/0x710 [ 15.000791][ T179] #3: ffffffffb0889660 (console_owner){....}-{0:0}, at: console_lock_spinning_enable+0x40/0x60 [ 15.000796][ T179] #4: ffffffffb0889560 (printk_legacy_map-wait-type-override){....}-{3:3}, at: console_emit_next_record+0x202/0x4f0 [ 15.000800][ T179] irq event stamp: 113986 [ 15.000801][ T179] hardirqs last enabled at (113985): [] __down_trylock_console_sem+0x86/0xa0 [ 15.000805][ T179] hardirqs last disabled at (113986): [] console_emit_next_record+0x3f8/0x4f0 [ 15.000808][ T179] softirqs last enabled at (113922): [] netlink_release+0x17b/0xcf0 [ 15.000813][ T179] softirqs last disabled at (113920): [] netlink_release+0xd2/0xcf0 [ 15.000816][ T179] Preemption disabled at: [ 15.000817][ T179] [<0000000000000000>] 0x0 [ 15.000824][ T179] CPU: 1 UID: 0 PID: 179 Comm: (udev-worker) Tainted: G W 7.2.0-virtme #1 PREEMPT(full) [ 15.000828][ T179] Tainted: [W]=WARN [ 15.000829][ T179] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011 [ 15.000831][ T179] Call Trace: [ 15.000833][ T179] [ 15.000834][ T179] dump_stack_lvl+0x6f/0xa0 [ 15.000841][ T179] __might_resched.cold+0x1fe/0x2c1 [ 15.000846][ T179] ? perf_trace_sched_switch+0x7c0/0x7c0 [ 15.000854][ T179] ? __kmalloc_noprof+0xdb/0x760 [ 15.000860][ T179] __kmalloc_noprof+0x443/0x760 [ 15.000862][ T179] ? alloc_buf.isra.0+0x4b/0x260 [ 15.000869][ T179] ? do_raw_spin_unlock+0x59/0x250 [ 15.000871][ T179] alloc_buf.isra.0+0x4b/0x260 [ 15.000875][ T179] put_chars+0x1e1/0x2f0 [ 15.000878][ T179] ? __send_to_port+0x420/0x420 [ 15.000880][ T179] ? printk_get_next_message+0x2fe/0x7d0 [ 15.000884][ T179] ? rcu_read_lock_any_held+0x3c/0x90 [ 15.000887][ T179] ? validate_chain+0x38b/0xc20 [ 15.000892][ T179] hvc_console_print+0x292/0x780 [ 15.000895][ T179] ? __lock_acquire+0x518/0xc20 [ 15.000897][ T179] ? __lock_acquire+0x518/0xc20 [ 15.000901][ T179] ? hvc_write+0x3a0/0x3a0 [ 15.000905][ T179] ? rcu_is_watching+0x16/0xd0 [ 15.000907][ T179] ? lock_acquire+0x13c/0x160 [ 15.000911][ T179] console_emit_next_record+0x252/0x4f0 [ 15.000915][ T179] ? devkmsg_read+0x4e0/0x4e0 [ 15.000920][ T179] ? rcu_is_watching+0x16/0xd0 [ 15.000922][ T179] ? lock_acquire+0x13c/0x160 [ 15.000933][ T179] console_flush_one_record+0x46f/0x710 [ 15.000938][ T179] ? console_emit_next_record+0x4f0/0x4f0 [ 15.000940][ T179] ? __lock_acquire+0x518/0xc20 [ 15.000945][ T179] console_unlock+0xee/0x1f0 [ 15.000948][ T179] ? console_flush_one_record+0x710/0x710 [ 15.000950][ T179] ? rcu_is_watching+0x16/0xd0 [ 15.000952][ T179] ? lock_acquire+0x60/0x160 [ 15.000956][ T179] ? __down_trylock_console_sem+0x5e/0xa0 [ 15.000958][ T179] ? vprintk_emit+0x320/0x3e0 [ 15.000960][ T179] vprintk_emit+0x37c/0x3e0 [ 15.000964][ T179] ? wake_up_klogd_work_func+0x90/0x90 [ 15.000967][ T179] ? __lock_acquire+0x518/0xc20 [ 15.000970][ T179] _printk+0xc7/0x100 [ 15.000974][ T179] ? snapshot_read.cold+0x21/0x21 [ 15.000977][ T179] ? do_raw_spin_lock+0x131/0x280 [ 15.000979][ T179] ? __rwlock_init+0x150/0x150 [ 15.000983][ T179] ? do_raw_spin_lock+0x131/0x280 [ 15.000986][ T179] do_exit.cold+0x82/0x9c [ 15.000991][ T179] ? exit_notify+0x890/0x890 [ 15.000992][ T179] ? __lock_release.isra.0+0x69/0x1a0 [ 15.000995][ T179] ? rcu_is_watching+0x16/0xd0 [ 15.000999][ T179] do_group_exit+0xb8/0x370 [ 15.001002][ T179] __x64_sys_exit_group+0x3c/0x50 [ 15.001004][ T179] x64_sys_call+0x1567/0x1570 [ 15.001006][ T179] do_syscall_64+0xff/0x530 [ 15.001010][ T179] ? exc_page_fault+0xee/0x100 [ 15.001013][ T179] entry_SYSCALL_64_after_hwframe+0x4b/0x53 [ 15.001015][ T179] RIP: 0033:0x7f32b21591b8 [ 15.001017][ T179] Code: Unable to access opcode bytes at 0x7f32b215918e. [ 15.001018][ T179] RSP: 002b:00007ffc2f5611d8 EFLAGS: 00000256 ORIG_RAX: 00000000000000e7 [ 15.001021][ T179] RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 00007f32b21591b8 [ 15.001022][ T179] RDX: 0000000000000000 RSI: fffffffffffffe90 RDI: 0000000000000000 [ 15.001023][ T179] RBP: 00007ffc2f561360 R08: 0000558cdd56dc68 R09: 0000000000000000 [ 15.001024][ T179] R10: 0000000000000000 R11: 0000000000000256 R12: 0000000000000000 [ 15.001025][ T179] R13: 00007f32b19b7050 R14: 00007f32b268ad9e R15: 0000558cdd41fd00 [ 15.001032][ T179]