[ 12.280894][ T90] (udev-worker) (90) used greatest stack depth: 22696 bytes left [ 12.280915][ T90] BUG: sleeping function called from invalid context at ./include/linux/sched/mm.h:322 [ 12.280917][ T90] in_atomic(): 1, irqs_disabled(): 1, non_block: 0, pid: 90, name: (udev-worker) [ 12.280918][ T90] preempt_count: 2, expected: 0 [ 12.280919][ T90] RCU nest depth: 0, expected: 0 [ 12.280920][ T90] locks held by (udev-worker)/90: 5, last CPU#2: [ 12.280922][ T90] #0: ffffffff850027b8 (low_water_lock){+.+.}-{3:3}, at: do_exit+0x887/0xdc0 [ 12.280933][ T90] #1: ffffffff85199dc0 (console_lock){+.+.}-{0:0}, at: vprintk_emit+0x320/0x3e0 [ 12.280940][ T90] #2: ffffffff85199e38 (console_srcu){....}-{0:0}, at: console_flush_one_record+0x106/0x710 [ 12.280944][ T90] #3: ffffffff85089760 (console_owner){....}-{0:0}, at: console_lock_spinning_enable+0x40/0x60 [ 12.280947][ T90] #4: ffffffff85089660 (printk_legacy_map-wait-type-override){....}-{3:3}, at: console_emit_next_record+0x202/0x4f0 [ 12.280952][ T90] irq event stamp: 413172 [ 12.280953][ T90] hardirqs last enabled at (413171): [] __down_trylock_console_sem+0x86/0xa0 [ 12.280957][ T90] hardirqs last disabled at (413172): [] console_emit_next_record+0x3f8/0x4f0 [ 12.280960][ T90] softirqs last enabled at (413108): [] handle_softirqs+0x67c/0x900 [ 12.280962][ T90] softirqs last disabled at (411405): [] do_softirq+0xac/0xe0 [ 12.280964][ T90] Preemption disabled at: [ 12.280965][ T90] [<0000000000000000>] 0x0 [ 12.280972][ T90] CPU: 2 UID: 0 PID: 90 Comm: (udev-worker) Tainted: G W 7.2.0-virtme #1 PREEMPT(full) [ 12.280975][ T90] Tainted: [W]=WARN [ 12.280976][ T90] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011 [ 12.280979][ T90] Call Trace: [ 12.280980][ T90] [ 12.280982][ T90] dump_stack_lvl+0x6f/0xa0 [ 12.280988][ T90] __might_resched.cold+0x1fe/0x2c1 [ 12.280992][ T90] ? perf_trace_sched_switch+0x7c0/0x7c0 [ 12.280996][ T90] ? __kmalloc_noprof+0xdb/0x760 [ 12.281001][ T90] __kmalloc_noprof+0x443/0x760 [ 12.281005][ T90] ? alloc_buf.isra.0+0x4b/0x260 [ 12.281013][ T90] ? do_raw_spin_unlock+0x59/0x250 [ 12.281015][ T90] alloc_buf.isra.0+0x4b/0x260 [ 12.281019][ T90] put_chars+0x1e1/0x2f0 [ 12.281022][ T90] ? __send_to_port+0x420/0x420 [ 12.281024][ T90] ? printk_get_next_message+0x2fe/0x7d0 [ 12.281028][ T90] ? rcu_read_lock_any_held+0x3c/0x90 [ 12.281031][ T90] ? validate_chain+0x38b/0xc20 [ 12.281034][ T90] hvc_console_print+0x292/0x780 [ 12.281038][ T90] ? __lock_acquire+0x518/0xc20 [ 12.281040][ T90] ? __lock_acquire+0x518/0xc20 [ 12.281044][ T90] ? hvc_write+0x3a0/0x3a0 [ 12.281047][ T90] ? rcu_is_watching+0x16/0xd0 [ 12.281051][ T90] ? lock_acquire+0x13c/0x160 [ 12.281055][ T90] console_emit_next_record+0x252/0x4f0 [ 12.281058][ T90] ? devkmsg_read+0x4e0/0x4e0 [ 12.281062][ T90] ? rcu_is_watching+0x16/0xd0 [ 12.281065][ T90] ? lock_acquire+0x13c/0x160 [ 12.281068][ T90] console_flush_one_record+0x46f/0x710 [ 12.281072][ T90] ? console_emit_next_record+0x4f0/0x4f0 [ 12.281074][ T90] ? __lock_acquire+0x518/0xc20 [ 12.281079][ T90] console_unlock+0xee/0x1f0 [ 12.281082][ T90] ? console_flush_one_record+0x710/0x710 [ 12.281083][ T90] ? rcu_is_watching+0x16/0xd0 [ 12.281086][ T90] ? lock_acquire+0xa0/0x160 [ 12.281089][ T90] ? __down_trylock_console_sem+0x5e/0xa0 [ 12.281091][ T90] ? vprintk_emit+0x320/0x3e0 [ 12.281096][ T90] vprintk_emit+0x37c/0x3e0 [ 12.281101][ T90] ? wake_up_klogd_work_func+0x90/0x90 [ 12.281105][ T90] ? __lock_acquire+0x518/0xc20 [ 12.281108][ T90] _printk+0xc7/0x100 [ 12.281112][ T90] ? snapshot_read.cold+0x21/0x21 [ 12.281115][ T90] ? do_raw_spin_lock+0x131/0x280 [ 12.281117][ T90] ? __rwlock_init+0x150/0x150 [ 12.281121][ T90] ? do_raw_spin_lock+0x131/0x280 [ 12.281123][ T90] do_exit.cold+0x82/0x9c [ 12.281127][ T90] ? exit_notify+0x890/0x890 [ 12.281128][ T90] ? __lock_release.isra.0+0x69/0x1a0 [ 12.281131][ T90] ? rcu_is_watching+0x16/0xd0 [ 12.281135][ T90] do_group_exit+0xb8/0x370 [ 12.281137][ T90] __x64_sys_exit_group+0x3c/0x50 [ 12.281139][ T90] x64_sys_call+0x1567/0x1570 [ 12.281141][ T90] do_syscall_64+0xff/0x530 [ 12.281144][ T90] ? irq_exit_rcu+0x1a/0x30 [ 12.281147][ T90] entry_SYSCALL_64_after_hwframe+0x4b/0x53 [ 12.281149][ T90] RIP: 0033:0x7fc1d8a811b8 [ 12.281152][ T90] Code: Unable to access opcode bytes at 0x7fc1d8a8118e. [ 12.281154][ T90] RSP: 002b:00007fffb1a9ed78 EFLAGS: 00000256 ORIG_RAX: 00000000000000e7 [ 12.281163][ T90] RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 00007fc1d8a811b8 [ 12.281164][ T90] RDX: 0000000000000000 RSI: fffffffffffffe90 RDI: 0000000000000000 [ 12.281165][ T90] RBP: 00007fffb1a9ef00 R08: 00005565a0f5d048 R09: 0000000000000000 [ 12.281166][ T90] R10: 0000000000000000 R11: 0000000000000256 R12: 0000000000000000 [ 12.281167][ T90] R13: 00007fc1d82df050 R14: 00007fc1d8fb2d9e R15: 00005565a0e03df0 [ 12.281174][ T90]