[ 13.693458][ T85] (udev-worker) (85) used greatest stack depth: 23776 bytes left [ 13.693479][ T85] BUG: sleeping function called from invalid context at ./include/linux/sched/mm.h:322 [ 13.693481][ T85] in_atomic(): 1, irqs_disabled(): 1, non_block: 0, pid: 85, name: (udev-worker) [ 13.693483][ T85] preempt_count: 2, expected: 0 [ 13.693484][ T85] RCU nest depth: 0, expected: 0 [ 13.693485][ T85] locks held by (udev-worker)/85: 5, last CPU#2: [ 13.693486][ T85] #0: ffffffff8f4027b8 (low_water_lock){+.+.}-{3:3}, at: do_exit+0x887/0xdc0 [ 13.693498][ T85] #1: ffffffff8f599dc0 (console_lock){+.+.}-{0:0}, at: vprintk_emit+0x320/0x3e0 [ 13.693504][ T85] #2: ffffffff8f599e38 (console_srcu){....}-{0:0}, at: console_flush_one_record+0x106/0x710 [ 13.693508][ T85] #3: ffffffff8f489760 (console_owner){....}-{0:0}, at: console_lock_spinning_enable+0x40/0x60 [ 13.693512][ T85] #4: ffffffff8f489660 (printk_legacy_map-wait-type-override){....}-{3:3}, at: console_emit_next_record+0x202/0x4f0 [ 13.693516][ T85] irq event stamp: 329084 [ 13.693517][ T85] hardirqs last enabled at (329083): [] __down_trylock_console_sem+0x86/0xa0 [ 13.693519][ T85] hardirqs last disabled at (329084): [] console_emit_next_record+0x3f8/0x4f0 [ 13.693521][ T85] softirqs last enabled at (329018): [] netlink_release+0x17b/0xcf0 [ 13.693525][ T85] softirqs last disabled at (329016): [] netlink_release+0xd2/0xcf0 [ 13.693528][ T85] Preemption disabled at: [ 13.693529][ T85] [<0000000000000000>] 0x0 [ 13.693536][ T85] CPU: 2 UID: 0 PID: 85 Comm: (udev-worker) Tainted: G W 7.2.0-virtme #1 PREEMPT(full) [ 13.693540][ T85] Tainted: [W]=WARN [ 13.693540][ T85] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011 [ 13.693542][ T85] Call Trace: [ 13.693544][ T85] [ 13.693545][ T85] dump_stack_lvl+0x6f/0xa0 [ 13.693551][ T85] __might_resched.cold+0x1fe/0x2c1 [ 13.693556][ T85] ? perf_trace_sched_switch+0x7c0/0x7c0 [ 13.693560][ T85] ? __kmalloc_noprof+0xdb/0x760 [ 13.693565][ T85] __kmalloc_noprof+0x443/0x760 [ 13.693567][ T85] ? alloc_buf.isra.0+0x4b/0x260 [ 13.693574][ T85] ? do_raw_spin_unlock+0x59/0x250 [ 13.693576][ T85] alloc_buf.isra.0+0x4b/0x260 [ 13.693580][ T85] put_chars+0x1e1/0x2f0 [ 13.693583][ T85] ? __send_to_port+0x420/0x420 [ 13.693585][ T85] ? printk_get_next_message+0x2fe/0x7d0 [ 13.693588][ T85] ? rcu_read_lock_any_held+0x3c/0x90 [ 13.693591][ T85] ? validate_chain+0x38b/0xc20 [ 13.693595][ T85] hvc_console_print+0x292/0x780 [ 13.693599][ T85] ? __lock_acquire+0x518/0xc20 [ 13.693600][ T85] ? __lock_acquire+0x518/0xc20 [ 13.693605][ T85] ? hvc_write+0x3a0/0x3a0 [ 13.693608][ T85] ? rcu_is_watching+0x16/0xd0 [ 13.693612][ T85] ? lock_acquire+0x13c/0x160 [ 13.693615][ T85] console_emit_next_record+0x252/0x4f0 [ 13.693619][ T85] ? devkmsg_read+0x4e0/0x4e0 [ 13.693624][ T85] ? rcu_is_watching+0x16/0xd0 [ 13.693626][ T85] ? lock_acquire+0x13c/0x160 [ 13.693630][ T85] console_flush_one_record+0x46f/0x710 [ 13.693634][ T85] ? console_emit_next_record+0x4f0/0x4f0 [ 13.693637][ T85] ? __lock_acquire+0x518/0xc20 [ 13.693642][ T85] console_unlock+0xee/0x1f0 [ 13.693645][ T85] ? console_flush_one_record+0x710/0x710 [ 13.693647][ T85] ? rcu_is_watching+0x16/0xd0 [ 13.693649][ T85] ? lock_acquire+0xa0/0x160 [ 13.693653][ T85] ? __down_trylock_console_sem+0x5e/0xa0 [ 13.693654][ T85] ? vprintk_emit+0x320/0x3e0 [ 13.693658][ T85] vprintk_emit+0x37c/0x3e0 [ 13.693661][ T85] ? wake_up_klogd_work_func+0x90/0x90 [ 13.693665][ T85] ? __lock_acquire+0x518/0xc20 [ 13.693668][ T85] _printk+0xc7/0x100 [ 13.693672][ T85] ? snapshot_read.cold+0x21/0x21 [ 13.693675][ T85] ? do_raw_spin_lock+0x131/0x280 [ 13.693677][ T85] ? __rwlock_init+0x150/0x150 [ 13.693681][ T85] ? do_raw_spin_lock+0x131/0x280 [ 13.693684][ T85] do_exit.cold+0x82/0x9c [ 13.693687][ T85] ? exit_notify+0x890/0x890 [ 13.693689][ T85] ? __lock_release.isra.0+0x69/0x1a0 [ 13.693691][ T85] ? rcu_is_watching+0x16/0xd0 [ 13.693695][ T85] do_group_exit+0xb8/0x370 [ 13.693698][ T85] __x64_sys_exit_group+0x3c/0x50 [ 13.693700][ T85] x64_sys_call+0x1567/0x1570 [ 13.693702][ T85] do_syscall_64+0xff/0x530 [ 13.693705][ T85] ? irq_exit_rcu+0x1a/0x30 [ 13.693708][ T85] entry_SYSCALL_64_after_hwframe+0x4b/0x53 [ 13.693711][ T85] RIP: 0033:0x7f54f81cc1b8 [ 13.693713][ T85] Code: Unable to access opcode bytes at 0x7f54f81cc18e. [ 13.693714][ T85] RSP: 002b:00007ffd26525e68 EFLAGS: 00000256 ORIG_RAX: 00000000000000e7 [ 13.693716][ T85] RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 00007f54f81cc1b8 [ 13.693718][ T85] RDX: 0000000000000000 RSI: fffffffffffffe90 RDI: 0000000000000000 [ 13.693719][ T85] RBP: 00007ffd26525ff0 R08: 0000558169f58618 R09: 0000000000000000 [ 13.693720][ T85] R10: 0000000000000000 R11: 0000000000000256 R12: 0000000000000000 [ 13.693720][ T85] R13: 00007f54f7a2a050 R14: 00007f54f86fdd9e R15: 0000558169dfb1f0 [ 13.693727][ T85]