[ 59.580699][ T85] (udev-worker) (85) used greatest stack depth: 22696 bytes left [ 59.580840][ T85] BUG: sleeping function called from invalid context at ./include/linux/sched/mm.h:322 [ 59.580843][ T85] in_atomic(): 1, irqs_disabled(): 1, non_block: 0, pid: 85, name: (udev-worker) [ 59.580844][ T85] preempt_count: 2, expected: 0 [ 59.580845][ T85] RCU nest depth: 0, expected: 0 [ 59.580846][ T85] locks held by (udev-worker)/85: 5, last CPU#3: [ 59.580849][ T85] #0: ffffffffb4a027b8 (low_water_lock){+.+.}-{3:3}, at: do_exit+0x887/0xdc0 [ 59.580862][ T85] #1: ffffffffb4b99cc0 (console_lock){+.+.}-{0:0}, at: vprintk_emit+0x320/0x3e0 [ 59.580867][ T85] #2: ffffffffb4b99d38 (console_srcu){....}-{0:0}, at: console_flush_one_record+0x106/0x710 [ 59.580871][ T85] #3: ffffffffb4a89660 (console_owner){....}-{0:0}, at: console_lock_spinning_enable+0x40/0x60 [ 59.580875][ T85] #4: ffffffffb4a89560 (printk_legacy_map-wait-type-override){....}-{3:3}, at: console_emit_next_record+0x202/0x4f0 [ 59.580879][ T85] irq event stamp: 6414702 [ 59.580880][ T85] hardirqs last enabled at (6414701): [] __down_trylock_console_sem+0x86/0xa0 [ 59.580883][ T85] hardirqs last disabled at (6414702): [] console_emit_next_record+0x3f8/0x4f0 [ 59.580885][ T85] softirqs last enabled at (6414636): [] netlink_release+0x17b/0xcf0 [ 59.580889][ T85] softirqs last disabled at (6414634): [] netlink_release+0xd2/0xcf0 [ 59.580892][ T85] Preemption disabled at: [ 59.580893][ T85] [<0000000000000000>] 0x0 [ 59.580900][ T85] CPU: 3 UID: 0 PID: 85 Comm: (udev-worker) Tainted: G W 7.2.0-virtme #1 PREEMPT(full) [ 59.580903][ T85] Tainted: [W]=WARN [ 59.580904][ T85] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011 [ 59.580906][ T85] Call Trace: [ 59.580908][ T85] [ 59.580910][ T85] dump_stack_lvl+0x6f/0xa0 [ 59.580916][ T85] __might_resched.cold+0x1fe/0x2c1 [ 59.580921][ T85] ? perf_trace_sched_switch+0x7c0/0x7c0 [ 59.580925][ T85] ? __kmalloc_noprof+0xdb/0x760 [ 59.580930][ T85] __kmalloc_noprof+0x443/0x760 [ 59.580932][ T85] ? alloc_buf.isra.0+0x4b/0x260 [ 59.580938][ T85] ? do_raw_spin_unlock+0x59/0x250 [ 59.580940][ T85] alloc_buf.isra.0+0x4b/0x260 [ 59.580944][ T85] put_chars+0x1e1/0x2f0 [ 59.580952][ T85] ? __send_to_port+0x420/0x420 [ 59.580955][ T85] ? printk_get_next_message+0x2fe/0x7d0 [ 59.580960][ T85] ? rcu_read_lock_any_held+0x3c/0x90 [ 59.580964][ T85] ? validate_chain+0x38b/0xc20 [ 59.580971][ T85] hvc_console_print+0x292/0x780 [ 59.580974][ T85] ? __lock_acquire+0x518/0xc20 [ 59.580976][ T85] ? __lock_acquire+0x518/0xc20 [ 59.580983][ T85] ? hvc_write+0x3a0/0x3a0 [ 59.580988][ T85] ? rcu_is_watching+0x16/0xd0 [ 59.580992][ T85] ? lock_acquire+0x13c/0x160 [ 59.580999][ T85] console_emit_next_record+0x252/0x4f0 [ 59.581005][ T85] ? devkmsg_read+0x4e0/0x4e0 [ 59.581012][ T85] ? rcu_is_watching+0x16/0xd0 [ 59.581015][ T85] ? lock_acquire+0x13c/0x160 [ 59.581021][ T85] console_flush_one_record+0x46f/0x710 [ 59.581027][ T85] ? console_emit_next_record+0x4f0/0x4f0 [ 59.581030][ T85] ? __lock_acquire+0x518/0xc20 [ 59.581038][ T85] console_unlock+0xee/0x1f0 [ 59.581042][ T85] ? console_flush_one_record+0x710/0x710 [ 59.581044][ T85] ? rcu_is_watching+0x16/0xd0 [ 59.581047][ T85] ? lock_acquire+0x60/0x160 [ 59.581053][ T85] ? __down_trylock_console_sem+0x5e/0xa0 [ 59.581055][ T85] ? vprintk_emit+0x320/0x3e0 [ 59.581061][ T85] vprintk_emit+0x37c/0x3e0 [ 59.581066][ T85] ? wake_up_klogd_work_func+0x90/0x90 [ 59.581071][ T85] ? __lock_acquire+0x518/0xc20 [ 59.581077][ T85] _printk+0xc7/0x100 [ 59.581081][ T85] ? snapshot_read.cold+0x21/0x21 [ 59.581086][ T85] ? do_raw_spin_lock+0x131/0x280 [ 59.581090][ T85] ? __rwlock_init+0x150/0x150 [ 59.581096][ T85] ? do_raw_spin_lock+0x131/0x280 [ 59.581100][ T85] do_exit.cold+0x82/0x9c [ 59.581105][ T85] ? exit_notify+0x890/0x890 [ 59.581107][ T85] ? __lock_release.isra.0+0x69/0x1a0 [ 59.581111][ T85] ? rcu_is_watching+0x16/0xd0 [ 59.581118][ T85] do_group_exit+0xb8/0x370 [ 59.581123][ T85] __x64_sys_exit_group+0x3c/0x50 [ 59.581126][ T85] x64_sys_call+0x1567/0x1570 [ 59.581129][ T85] do_syscall_64+0xff/0x530 [ 59.581134][ T85] ? irq_exit_rcu+0x1a/0x30 [ 59.581138][ T85] entry_SYSCALL_64_after_hwframe+0x4b/0x53 [ 59.581142][ T85] RIP: 0033:0x7f2ba12381b8 [ 59.581145][ T85] Code: Unable to access opcode bytes at 0x7f2ba123818e. [ 59.581147][ T85] RSP: 002b:00007ffdfcb3c948 EFLAGS: 00000256 ORIG_RAX: 00000000000000e7 [ 59.581150][ T85] RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 00007f2ba12381b8 [ 59.581152][ T85] RDX: 0000000000000000 RSI: fffffffffffffe90 RDI: 0000000000000000 [ 59.581154][ T85] RBP: 00007ffdfcb3cad0 R08: 000055ca4895a638 R09: 0000000000000000 [ 59.581155][ T85] R10: 0000000000000000 R11: 0000000000000256 R12: 0000000000000000 [ 59.581156][ T85] R13: 00007f2ba0a96050 R14: 00007f2ba1769d9e R15: 000055ca487de410 [ 59.581168][ T85]