[ 12.184919][ T86] (udev-worker) (86) used greatest stack depth: 22696 bytes left [ 12.184938][ T86] BUG: sleeping function called from invalid context at ./include/linux/sched/mm.h:322 [ 12.184940][ T86] in_atomic(): 1, irqs_disabled(): 1, non_block: 0, pid: 86, name: (udev-worker) [ 12.184942][ T86] preempt_count: 2, expected: 0 [ 12.184943][ T86] RCU nest depth: 0, expected: 0 [ 12.184944][ T86] locks held by (udev-worker)/86: 5, last CPU#2: [ 12.184946][ T86] #0: ffffffff98c027b8 (low_water_lock){+.+.}-{3:3}, at: do_exit+0x887/0xdc0 [ 12.184956][ T86] #1: ffffffff98d99dc0 (console_lock){+.+.}-{0:0}, at: vprintk_emit+0x320/0x3e0 [ 12.184962][ T86] #2: ffffffff98d99e38 (console_srcu){....}-{0:0}, at: console_flush_one_record+0x106/0x710 [ 12.184966][ T86] #3: ffffffff98c89760 (console_owner){....}-{0:0}, at: console_lock_spinning_enable+0x40/0x60 [ 12.184970][ T86] #4: ffffffff98c89660 (printk_legacy_map-wait-type-override){....}-{3:3}, at: console_emit_next_record+0x202/0x4f0 [ 12.184974][ T86] irq event stamp: 417196 [ 12.184975][ T86] hardirqs last enabled at (417195): [] __down_trylock_console_sem+0x86/0xa0 [ 12.184977][ T86] hardirqs last disabled at (417196): [] console_emit_next_record+0x3f8/0x4f0 [ 12.184980][ T86] softirqs last enabled at (417130): [] handle_softirqs+0x67c/0x900 [ 12.184982][ T86] softirqs last disabled at (415685): [] do_softirq+0xac/0xe0 [ 12.184984][ T86] Preemption disabled at: [ 12.184985][ T86] [<0000000000000000>] 0x0 [ 12.184992][ T86] CPU: 2 UID: 0 PID: 86 Comm: (udev-worker) Tainted: G W 7.2.0-virtme #1 PREEMPT(full) [ 12.184996][ T86] Tainted: [W]=WARN [ 12.184997][ T86] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011 [ 12.184999][ T86] Call Trace: [ 12.185000][ T86] [ 12.185002][ T86] dump_stack_lvl+0x6f/0xa0 [ 12.185008][ T86] __might_resched.cold+0x1fe/0x2c1 [ 12.185012][ T86] ? perf_trace_sched_switch+0x7c0/0x7c0 [ 12.185016][ T86] ? __kmalloc_noprof+0xdb/0x760 [ 12.185021][ T86] __kmalloc_noprof+0x443/0x760 [ 12.185024][ T86] ? alloc_buf.isra.0+0x4b/0x260 [ 12.185031][ T86] ? do_raw_spin_unlock+0x59/0x250 [ 12.185033][ T86] alloc_buf.isra.0+0x4b/0x260 [ 12.185037][ T86] put_chars+0x1e1/0x2f0 [ 12.185040][ T86] ? __send_to_port+0x420/0x420 [ 12.185042][ T86] ? printk_get_next_message+0x2fe/0x7d0 [ 12.185046][ T86] ? rcu_read_lock_any_held+0x3c/0x90 [ 12.185049][ T86] ? validate_chain+0x38b/0xc20 [ 12.185053][ T86] hvc_console_print+0x292/0x780 [ 12.185057][ T86] ? __lock_acquire+0x518/0xc20 [ 12.185059][ T86] ? __lock_acquire+0x518/0xc20 [ 12.185063][ T86] ? hvc_write+0x3a0/0x3a0 [ 12.185066][ T86] ? rcu_is_watching+0x16/0xd0 [ 12.185070][ T86] ? lock_acquire+0x13c/0x160 [ 12.185074][ T86] console_emit_next_record+0x252/0x4f0 [ 12.185078][ T86] ? devkmsg_read+0x4e0/0x4e0 [ 12.185082][ T86] ? rcu_is_watching+0x16/0xd0 [ 12.185084][ T86] ? lock_acquire+0x13c/0x160 [ 12.185090][ T86] console_flush_one_record+0x46f/0x710 [ 12.185095][ T86] ? console_emit_next_record+0x4f0/0x4f0 [ 12.185097][ T86] ? __lock_acquire+0x518/0xc20 [ 12.185102][ T86] console_unlock+0xee/0x1f0 [ 12.185105][ T86] ? console_flush_one_record+0x710/0x710 [ 12.185106][ T86] ? rcu_is_watching+0x16/0xd0 [ 12.185109][ T86] ? lock_acquire+0xa0/0x160 [ 12.185112][ T86] ? __down_trylock_console_sem+0x5e/0xa0 [ 12.185114][ T86] ? vprintk_emit+0x320/0x3e0 [ 12.185117][ T86] vprintk_emit+0x37c/0x3e0 [ 12.185121][ T86] ? wake_up_klogd_work_func+0x90/0x90 [ 12.185125][ T86] ? __lock_acquire+0x518/0xc20 [ 12.185128][ T86] _printk+0xc7/0x100 [ 12.185132][ T86] ? snapshot_read.cold+0x21/0x21 [ 12.185135][ T86] ? do_raw_spin_lock+0x131/0x280 [ 12.185137][ T86] ? __rwlock_init+0x150/0x150 [ 12.185141][ T86] ? do_raw_spin_lock+0x131/0x280 [ 12.185144][ T86] do_exit.cold+0x82/0x9c [ 12.185148][ T86] ? exit_notify+0x890/0x890 [ 12.185149][ T86] ? __lock_release.isra.0+0x69/0x1a0 [ 12.185152][ T86] ? rcu_is_watching+0x16/0xd0 [ 12.185156][ T86] do_group_exit+0xb8/0x370 [ 12.185159][ T86] __x64_sys_exit_group+0x3c/0x50 [ 12.185160][ T86] x64_sys_call+0x1567/0x1570 [ 12.185162][ T86] do_syscall_64+0xff/0x530 [ 12.185166][ T86] ? exc_page_fault+0xee/0x100 [ 12.185170][ T86] entry_SYSCALL_64_after_hwframe+0x4b/0x53 [ 12.185172][ T86] RIP: 0033:0x7f9642f631b8 [ 12.185175][ T86] Code: Unable to access opcode bytes at 0x7f9642f6318e. [ 12.185176][ T86] RSP: 002b:00007fff45c14758 EFLAGS: 00000256 ORIG_RAX: 00000000000000e7 [ 12.185178][ T86] RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 00007f9642f631b8 [ 12.185180][ T86] RDX: 0000000000000000 RSI: fffffffffffffe90 RDI: 0000000000000000 [ 12.185181][ T86] RBP: 00007fff45c148e0 R08: 000055e2f8754e18 R09: 0000000000000000 [ 12.185181][ T86] R10: 0000000000000000 R11: 0000000000000256 R12: 0000000000000000 [ 12.185182][ T86] R13: 00007f96427c1050 R14: 00007f9643494d9e R15: 000055e2f8608020 [ 12.185189][ T86]