[ 12.136303][ T82] (udev-worker) (82) used greatest stack depth: 22696 bytes left [ 12.136322][ T82] BUG: sleeping function called from invalid context at ./include/linux/sched/mm.h:322 [ 12.136324][ T82] in_atomic(): 1, irqs_disabled(): 1, non_block: 0, pid: 82, name: (udev-worker) [ 12.136326][ T82] preempt_count: 2, expected: 0 [ 12.136327][ T82] RCU nest depth: 0, expected: 0 [ 12.136327][ T82] locks held by (udev-worker)/82: 5, last CPU#3: [ 12.136330][ T82] #0: ffffffff9f0027b8 (low_water_lock){+.+.}-{3:3}, at: do_exit+0x887/0xdc0 [ 12.136341][ T82] #1: ffffffff9f199dc0 (console_lock){+.+.}-{0:0}, at: vprintk_emit+0x320/0x3e0 [ 12.136347][ T82] #2: ffffffff9f199e38 (console_srcu){....}-{0:0}, at: console_flush_one_record+0x106/0x710 [ 12.136351][ T82] #3: ffffffff9f089760 (console_owner){....}-{0:0}, at: console_lock_spinning_enable+0x40/0x60 [ 12.136355][ T82] #4: ffffffff9f089660 (printk_legacy_map-wait-type-override){....}-{3:3}, at: console_emit_next_record+0x202/0x4f0 [ 12.136358][ T82] irq event stamp: 365034 [ 12.136359][ T82] hardirqs last enabled at (365033): [] __down_trylock_console_sem+0x86/0xa0 [ 12.136362][ T82] hardirqs last disabled at (365034): [] console_emit_next_record+0x3f8/0x4f0 [ 12.136364][ T82] softirqs last enabled at (365028): [] handle_softirqs+0x67c/0x900 [ 12.136366][ T82] softirqs last disabled at (365023): [] __irq_exit_rcu+0x145/0x1c0 [ 12.136368][ T82] Preemption disabled at: [ 12.136369][ T82] [<0000000000000000>] 0x0 [ 12.136375][ T82] CPU: 3 UID: 0 PID: 82 Comm: (udev-worker) Tainted: G W 7.2.0-virtme #1 PREEMPT(full) [ 12.136379][ T82] Tainted: [W]=WARN [ 12.136380][ T82] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011 [ 12.136381][ T82] Call Trace: [ 12.136383][ T82] [ 12.136384][ T82] dump_stack_lvl+0x6f/0xa0 [ 12.136390][ T82] __might_resched.cold+0x1fe/0x2c1 [ 12.136395][ T82] ? perf_trace_sched_switch+0x7c0/0x7c0 [ 12.136398][ T82] ? __kmalloc_noprof+0xdb/0x760 [ 12.136403][ T82] __kmalloc_noprof+0x443/0x760 [ 12.136406][ T82] ? alloc_buf.isra.0+0x4b/0x260 [ 12.136412][ T82] ? do_raw_spin_unlock+0x59/0x250 [ 12.136415][ T82] alloc_buf.isra.0+0x4b/0x260 [ 12.136418][ T82] put_chars+0x1e1/0x2f0 [ 12.136422][ T82] ? __send_to_port+0x420/0x420 [ 12.136424][ T82] ? printk_get_next_message+0x2fe/0x7d0 [ 12.136427][ T82] ? rcu_read_lock_any_held+0x3c/0x90 [ 12.136430][ T82] ? validate_chain+0x38b/0xc20 [ 12.136434][ T82] hvc_console_print+0x292/0x780 [ 12.136438][ T82] ? __lock_acquire+0x518/0xc20 [ 12.136439][ T82] ? __lock_acquire+0x518/0xc20 [ 12.136443][ T82] ? hvc_write+0x3a0/0x3a0 [ 12.136447][ T82] ? rcu_is_watching+0x16/0xd0 [ 12.136450][ T82] ? lock_acquire+0x13c/0x160 [ 12.136454][ T82] console_emit_next_record+0x252/0x4f0 [ 12.136457][ T82] ? devkmsg_read+0x4e0/0x4e0 [ 12.136461][ T82] ? rcu_is_watching+0x16/0xd0 [ 12.136464][ T82] ? lock_acquire+0x13c/0x160 [ 12.136467][ T82] console_flush_one_record+0x46f/0x710 [ 12.136471][ T82] ? console_emit_next_record+0x4f0/0x4f0 [ 12.136473][ T82] ? __lock_acquire+0x518/0xc20 [ 12.136478][ T82] console_unlock+0xee/0x1f0 [ 12.136481][ T82] ? console_flush_one_record+0x710/0x710 [ 12.136483][ T82] ? rcu_is_watching+0x16/0xd0 [ 12.136485][ T82] ? lock_acquire+0xa0/0x160 [ 12.136488][ T82] ? __down_trylock_console_sem+0x5e/0xa0 [ 12.136490][ T82] ? vprintk_emit+0x320/0x3e0 [ 12.136493][ T82] vprintk_emit+0x37c/0x3e0 [ 12.136497][ T82] ? wake_up_klogd_work_func+0x90/0x90 [ 12.136500][ T82] ? __lock_acquire+0x518/0xc20 [ 12.136503][ T82] _printk+0xc7/0x100 [ 12.136507][ T82] ? snapshot_read.cold+0x21/0x21 [ 12.136509][ T82] ? do_raw_spin_lock+0x131/0x280 [ 12.136512][ T82] ? __rwlock_init+0x150/0x150 [ 12.136516][ T82] ? do_raw_spin_lock+0x131/0x280 [ 12.136518][ T82] do_exit.cold+0x82/0x9c [ 12.136522][ T82] ? exit_notify+0x890/0x890 [ 12.136523][ T82] ? __lock_release.isra.0+0x69/0x1a0 [ 12.136526][ T82] ? rcu_is_watching+0x16/0xd0 [ 12.136530][ T82] do_group_exit+0xb8/0x370 [ 12.136532][ T82] __x64_sys_exit_group+0x3c/0x50 [ 12.136534][ T82] x64_sys_call+0x1567/0x1570 [ 12.136536][ T82] do_syscall_64+0xff/0x530 [ 12.136540][ T82] ? exc_page_fault+0xee/0x100 [ 12.136543][ T82] entry_SYSCALL_64_after_hwframe+0x4b/0x53 [ 12.136545][ T82] RIP: 0033:0x7fe20f1601b8 [ 12.136547][ T82] Code: Unable to access opcode bytes at 0x7fe20f16018e. [ 12.136548][ T82] RSP: 002b:00007fff348d9478 EFLAGS: 00000256 ORIG_RAX: 00000000000000e7 [ 12.136551][ T82] RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 00007fe20f1601b8 [ 12.136552][ T82] RDX: 0000000000000000 RSI: fffffffffffffe90 RDI: 0000000000000000 [ 12.136553][ T82] RBP: 00007fff348d9600 R08: 000055a14b158978 R09: 0000000000000000 [ 12.136554][ T82] R10: 0000000000000000 R11: 0000000000000256 R12: 0000000000000000 [ 12.136554][ T82] R13: 00007fe20e9be050 R14: 00007fe20f691d9e R15: 000055a14b1524e0 [ 12.136561][ T82]