[ 12.543090][ T86] (udev-worker) (86) used greatest stack depth: 22696 bytes left [ 12.543111][ T86] BUG: sleeping function called from invalid context at ./include/linux/sched/mm.h:322 [ 12.543114][ T86] in_atomic(): 1, irqs_disabled(): 1, non_block: 0, pid: 86, name: (udev-worker) [ 12.543115][ T86] preempt_count: 2, expected: 0 [ 12.543116][ T86] RCU nest depth: 0, expected: 0 [ 12.543117][ T86] locks held by (udev-worker)/86: 5, last CPU#2: [ 12.543119][ T86] #0: ffffffffb46027b8 (low_water_lock){+.+.}-{3:3}, at: do_exit+0x887/0xdc0 [ 12.543131][ T86] #1: ffffffffb4799dc0 (console_lock){+.+.}-{0:0}, at: vprintk_emit+0x320/0x3e0 [ 12.543137][ T86] #2: ffffffffb4799e38 (console_srcu){....}-{0:0}, at: console_flush_one_record+0x106/0x710 [ 12.543141][ T86] #3: ffffffffb4689760 (console_owner){....}-{0:0}, at: console_lock_spinning_enable+0x40/0x60 [ 12.543145][ T86] #4: ffffffffb4689660 (printk_legacy_map-wait-type-override){....}-{3:3}, at: console_emit_next_record+0x202/0x4f0 [ 12.543149][ T86] irq event stamp: 410064 [ 12.543150][ T86] hardirqs last enabled at (410063): [] __down_trylock_console_sem+0x86/0xa0 [ 12.543153][ T86] hardirqs last disabled at (410064): [] console_emit_next_record+0x3f8/0x4f0 [ 12.543155][ T86] softirqs last enabled at (410000): [] netlink_release+0x17b/0xcf0 [ 12.543159][ T86] softirqs last disabled at (409998): [] netlink_release+0xd2/0xcf0 [ 12.543162][ T86] Preemption disabled at: [ 12.543163][ T86] [<0000000000000000>] 0x0 [ 12.543170][ T86] CPU: 2 UID: 0 PID: 86 Comm: (udev-worker) Tainted: G W 7.2.0-virtme #1 PREEMPT(full) [ 12.543174][ T86] Tainted: [W]=WARN [ 12.543175][ T86] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011 [ 12.543177][ T86] Call Trace: [ 12.543178][ T86] [ 12.543180][ T86] dump_stack_lvl+0x6f/0xa0 [ 12.543186][ T86] __might_resched.cold+0x1fe/0x2c1 [ 12.543191][ T86] ? perf_trace_sched_switch+0x7c0/0x7c0 [ 12.543195][ T86] ? __kmalloc_noprof+0xdb/0x760 [ 12.543201][ T86] __kmalloc_noprof+0x443/0x760 [ 12.543203][ T86] ? alloc_buf.isra.0+0x4b/0x260 [ 12.543210][ T86] ? do_raw_spin_unlock+0x59/0x250 [ 12.543213][ T86] alloc_buf.isra.0+0x4b/0x260 [ 12.543217][ T86] put_chars+0x1e1/0x2f0 [ 12.543220][ T86] ? __send_to_port+0x420/0x420 [ 12.543222][ T86] ? printk_get_next_message+0x2fe/0x7d0 [ 12.543226][ T86] ? rcu_read_lock_any_held+0x3c/0x90 [ 12.543229][ T86] ? validate_chain+0x38b/0xc20 [ 12.543233][ T86] hvc_console_print+0x292/0x780 [ 12.543237][ T86] ? __lock_acquire+0x518/0xc20 [ 12.543239][ T86] ? __lock_acquire+0x518/0xc20 [ 12.543243][ T86] ? hvc_write+0x3a0/0x3a0 [ 12.543247][ T86] ? rcu_is_watching+0x16/0xd0 [ 12.543250][ T86] ? lock_acquire+0x13c/0x160 [ 12.543254][ T86] console_emit_next_record+0x252/0x4f0 [ 12.543258][ T86] ? devkmsg_read+0x4e0/0x4e0 [ 12.543263][ T86] ? rcu_is_watching+0x16/0xd0 [ 12.543265][ T86] ? lock_acquire+0x13c/0x160 [ 12.543269][ T86] console_flush_one_record+0x46f/0x710 [ 12.543273][ T86] ? console_emit_next_record+0x4f0/0x4f0 [ 12.543275][ T86] ? __lock_acquire+0x518/0xc20 [ 12.543280][ T86] console_unlock+0xee/0x1f0 [ 12.543283][ T86] ? console_flush_one_record+0x710/0x710 [ 12.543285][ T86] ? rcu_is_watching+0x16/0xd0 [ 12.543287][ T86] ? lock_acquire+0xa0/0x160 [ 12.543291][ T86] ? __down_trylock_console_sem+0x5e/0xa0 [ 12.543293][ T86] ? vprintk_emit+0x320/0x3e0 [ 12.543296][ T86] vprintk_emit+0x37c/0x3e0 [ 12.543300][ T86] ? wake_up_klogd_work_func+0x90/0x90 [ 12.543304][ T86] ? __lock_acquire+0x518/0xc20 [ 12.543307][ T86] _printk+0xc7/0x100 [ 12.543311][ T86] ? snapshot_read.cold+0x21/0x21 [ 12.543314][ T86] ? do_raw_spin_lock+0x131/0x280 [ 12.543316][ T86] ? __rwlock_init+0x150/0x150 [ 12.543320][ T86] ? do_raw_spin_lock+0x131/0x280 [ 12.543323][ T86] do_exit.cold+0x82/0x9c [ 12.543327][ T86] ? exit_notify+0x890/0x890 [ 12.543328][ T86] ? __lock_release.isra.0+0x69/0x1a0 [ 12.543331][ T86] ? rcu_is_watching+0x16/0xd0 [ 12.543335][ T86] do_group_exit+0xb8/0x370 [ 12.543338][ T86] __x64_sys_exit_group+0x3c/0x50 [ 12.543340][ T86] x64_sys_call+0x1567/0x1570 [ 12.543342][ T86] do_syscall_64+0xff/0x530 [ 12.543346][ T86] ? exc_page_fault+0xee/0x100 [ 12.543349][ T86] entry_SYSCALL_64_after_hwframe+0x4b/0x53 [ 12.543352][ T86] RIP: 0033:0x7f1e0b5821b8 [ 12.543354][ T86] Code: Unable to access opcode bytes at 0x7f1e0b58218e. [ 12.543356][ T86] RSP: 002b:00007ffd321ce5c8 EFLAGS: 00000256 ORIG_RAX: 00000000000000e7 [ 12.543358][ T86] RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 00007f1e0b5821b8 [ 12.543360][ T86] RDX: 0000000000000000 RSI: fffffffffffffe90 RDI: 0000000000000000 [ 12.543361][ T86] RBP: 00007ffd321ce750 R08: 0000557bffbb5218 R09: 0000000000000000 [ 12.543362][ T86] R10: 0000000000000000 R11: 0000000000000256 R12: 0000000000000000 [ 12.543362][ T86] R13: 00007f1e0ade0050 R14: 00007f1e0bab3d9e R15: 0000557bffceb690 [ 12.543369][ T86]