[ 12.478185][ T86] (udev-worker) (86) used greatest stack depth: 22696 bytes left [ 12.478203][ T86] BUG: sleeping function called from invalid context at ./include/linux/sched/mm.h:322 [ 12.478205][ T86] in_atomic(): 1, irqs_disabled(): 1, non_block: 0, pid: 86, name: (udev-worker) [ 12.478207][ T86] preempt_count: 2, expected: 0 [ 12.478208][ T86] RCU nest depth: 0, expected: 0 [ 12.478209][ T86] locks held by (udev-worker)/86: 5, last CPU#3: [ 12.478212][ T86] #0: ffffffffb3a027b8 (low_water_lock){+.+.}-{3:3}, at: do_exit+0x887/0xdc0 [ 12.478225][ T86] #1: ffffffffb3b99dc0 (console_lock){+.+.}-{0:0}, at: vprintk_emit+0x320/0x3e0 [ 12.478231][ T86] #2: ffffffffb3b99e38 (console_srcu){....}-{0:0}, at: console_flush_one_record+0x106/0x710 [ 12.478236][ T86] #3: ffffffffb3a89760 (console_owner){....}-{0:0}, at: console_lock_spinning_enable+0x40/0x60 [ 12.478240][ T86] #4: ffffffffb3a89660 (printk_legacy_map-wait-type-override){....}-{3:3}, at: console_emit_next_record+0x202/0x4f0 [ 12.478244][ T86] irq event stamp: 317454 [ 12.478245][ T86] hardirqs last enabled at (317453): [] __down_trylock_console_sem+0x86/0xa0 [ 12.478247][ T86] hardirqs last disabled at (317454): [] console_emit_next_record+0x3f8/0x4f0 [ 12.478250][ T86] softirqs last enabled at (317390): [] netlink_release+0x17b/0xcf0 [ 12.478254][ T86] softirqs last disabled at (317388): [] netlink_release+0xd2/0xcf0 [ 12.478257][ T86] Preemption disabled at: [ 12.478258][ T86] [<0000000000000000>] 0x0 [ 12.478265][ T86] CPU: 3 UID: 0 PID: 86 Comm: (udev-worker) Tainted: G W 7.2.0-virtme #1 PREEMPT(full) [ 12.478268][ T86] Tainted: [W]=WARN [ 12.478269][ T86] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011 [ 12.478271][ T86] Call Trace: [ 12.478273][ T86] [ 12.478274][ T86] dump_stack_lvl+0x6f/0xa0 [ 12.478280][ T86] __might_resched.cold+0x1fe/0x2c1 [ 12.478285][ T86] ? perf_trace_sched_switch+0x7c0/0x7c0 [ 12.478289][ T86] ? __kmalloc_noprof+0xdb/0x760 [ 12.478295][ T86] __kmalloc_noprof+0x443/0x760 [ 12.478298][ T86] ? alloc_buf.isra.0+0x4b/0x260 [ 12.478304][ T86] ? do_raw_spin_unlock+0x59/0x250 [ 12.478307][ T86] alloc_buf.isra.0+0x4b/0x260 [ 12.478311][ T86] put_chars+0x1e1/0x2f0 [ 12.478314][ T86] ? __send_to_port+0x420/0x420 [ 12.478316][ T86] ? printk_get_next_message+0x2fe/0x7d0 [ 12.478320][ T86] ? rcu_read_lock_any_held+0x3c/0x90 [ 12.478323][ T86] ? validate_chain+0x38b/0xc20 [ 12.478327][ T86] hvc_console_print+0x292/0x780 [ 12.478332][ T86] ? __lock_acquire+0x518/0xc20 [ 12.478333][ T86] ? __lock_acquire+0x518/0xc20 [ 12.478338][ T86] ? hvc_write+0x3a0/0x3a0 [ 12.478341][ T86] ? rcu_is_watching+0x16/0xd0 [ 12.478345][ T86] ? lock_acquire+0x13c/0x160 [ 12.478349][ T86] console_emit_next_record+0x252/0x4f0 [ 12.478353][ T86] ? devkmsg_read+0x4e0/0x4e0 [ 12.478358][ T86] ? rcu_is_watching+0x16/0xd0 [ 12.478360][ T86] ? lock_acquire+0x13c/0x160 [ 12.478364][ T86] console_flush_one_record+0x46f/0x710 [ 12.478368][ T86] ? console_emit_next_record+0x4f0/0x4f0 [ 12.478370][ T86] ? __lock_acquire+0x518/0xc20 [ 12.478375][ T86] console_unlock+0xee/0x1f0 [ 12.478378][ T86] ? console_flush_one_record+0x710/0x710 [ 12.478380][ T86] ? rcu_is_watching+0x16/0xd0 [ 12.478383][ T86] ? lock_acquire+0xa0/0x160 [ 12.478386][ T86] ? __down_trylock_console_sem+0x5e/0xa0 [ 12.478388][ T86] ? vprintk_emit+0x320/0x3e0 [ 12.478392][ T86] vprintk_emit+0x37c/0x3e0 [ 12.478395][ T86] ? wake_up_klogd_work_func+0x90/0x90 [ 12.478399][ T86] ? __lock_acquire+0x518/0xc20 [ 12.478403][ T86] _printk+0xc7/0x100 [ 12.478406][ T86] ? snapshot_read.cold+0x21/0x21 [ 12.478409][ T86] ? do_raw_spin_lock+0x131/0x280 [ 12.478412][ T86] ? __rwlock_init+0x150/0x150 [ 12.478416][ T86] ? do_raw_spin_lock+0x131/0x280 [ 12.478418][ T86] do_exit.cold+0x82/0x9c [ 12.478422][ T86] ? exit_notify+0x890/0x890 [ 12.478424][ T86] ? __lock_release.isra.0+0x69/0x1a0 [ 12.478426][ T86] ? rcu_is_watching+0x16/0xd0 [ 12.478431][ T86] do_group_exit+0xb8/0x370 [ 12.478433][ T86] __x64_sys_exit_group+0x3c/0x50 [ 12.478435][ T86] x64_sys_call+0x1567/0x1570 [ 12.478438][ T86] do_syscall_64+0xff/0x530 [ 12.478441][ T86] ? exc_page_fault+0xee/0x100 [ 12.478444][ T86] entry_SYSCALL_64_after_hwframe+0x4b/0x53 [ 12.478447][ T86] RIP: 0033:0x7f509d5d51b8 [ 12.478449][ T86] Code: Unable to access opcode bytes at 0x7f509d5d518e. [ 12.478450][ T86] RSP: 002b:00007fffd750e408 EFLAGS: 00000256 ORIG_RAX: 00000000000000e7 [ 12.478453][ T86] RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 00007f509d5d51b8 [ 12.478454][ T86] RDX: 0000000000000000 RSI: fffffffffffffe90 RDI: 0000000000000000 [ 12.478455][ T86] RBP: 00007fffd750e590 R08: 0000559abfc66738 R09: 0000000000000000 [ 12.478456][ T86] R10: 0000000000000000 R11: 0000000000000256 R12: 0000000000000000 [ 12.478457][ T86] R13: 00007f509ce33050 R14: 00007f509db06d9e R15: 0000559abfc6c4e0 [ 12.478464][ T86]