[ 11.269707][ T84] (udev-worker) (84) used greatest stack depth: 22696 bytes left [ 11.269723][ T84] BUG: sleeping function called from invalid context at ./include/linux/sched/mm.h:322 [ 11.269725][ T84] in_atomic(): 1, irqs_disabled(): 1, non_block: 0, pid: 84, name: (udev-worker) [ 11.269727][ T84] preempt_count: 2, expected: 0 [ 11.269727][ T84] RCU nest depth: 0, expected: 0 [ 11.269728][ T84] locks held by (udev-worker)/84: 5, last CPU#2: [ 11.269730][ T84] #0: ffffffffaf4027b8 (low_water_lock){+.+.}-{3:3}, at: do_exit+0x887/0xdc0 [ 11.269741][ T84] #1: ffffffffaf599dc0 (console_lock){+.+.}-{0:0}, at: vprintk_emit+0x320/0x3e0 [ 11.269746][ T84] #2: ffffffffaf599e38 (console_srcu){....}-{0:0}, at: console_flush_one_record+0x106/0x710 [ 11.269750][ T84] #3: ffffffffaf489760 (console_owner){....}-{0:0}, at: console_lock_spinning_enable+0x40/0x60 [ 11.269754][ T84] #4: ffffffffaf489660 (printk_legacy_map-wait-type-override){....}-{3:3}, at: console_emit_next_record+0x202/0x4f0 [ 11.269758][ T84] irq event stamp: 346906 [ 11.269758][ T84] hardirqs last enabled at (346905): [] __down_trylock_console_sem+0x86/0xa0 [ 11.269761][ T84] hardirqs last disabled at (346906): [] console_emit_next_record+0x3f8/0x4f0 [ 11.269763][ T84] softirqs last enabled at (346840): [] netlink_release+0x17b/0xcf0 [ 11.269767][ T84] softirqs last disabled at (346838): [] netlink_release+0xd2/0xcf0 [ 11.269769][ T84] Preemption disabled at: [ 11.269770][ T84] [<0000000000000000>] 0x0 [ 11.269776][ T84] CPU: 2 UID: 0 PID: 84 Comm: (udev-worker) Tainted: G W 7.2.0-virtme #1 PREEMPT(full) [ 11.269780][ T84] Tainted: [W]=WARN [ 11.269780][ T84] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011 [ 11.269782][ T84] Call Trace: [ 11.269783][ T84] [ 11.269785][ T84] dump_stack_lvl+0x6f/0xa0 [ 11.269791][ T84] __might_resched.cold+0x1fe/0x2c1 [ 11.269796][ T84] ? perf_trace_sched_switch+0x7c0/0x7c0 [ 11.269799][ T84] ? __kmalloc_noprof+0xdb/0x760 [ 11.269804][ T84] __kmalloc_noprof+0x443/0x760 [ 11.269807][ T84] ? alloc_buf.isra.0+0x4b/0x260 [ 11.269813][ T84] ? do_raw_spin_unlock+0x59/0x250 [ 11.269815][ T84] alloc_buf.isra.0+0x4b/0x260 [ 11.269818][ T84] put_chars+0x1e1/0x2f0 [ 11.269822][ T84] ? __send_to_port+0x420/0x420 [ 11.269824][ T84] ? printk_get_next_message+0x2fe/0x7d0 [ 11.269827][ T84] ? rcu_read_lock_any_held+0x3c/0x90 [ 11.269830][ T84] ? validate_chain+0x38b/0xc20 [ 11.269834][ T84] hvc_console_print+0x292/0x780 [ 11.269837][ T84] ? __lock_acquire+0x518/0xc20 [ 11.269839][ T84] ? __lock_acquire+0x518/0xc20 [ 11.269843][ T84] ? hvc_write+0x3a0/0x3a0 [ 11.269846][ T84] ? rcu_is_watching+0x16/0xd0 [ 11.269850][ T84] ? lock_acquire+0x13c/0x160 [ 11.269853][ T84] console_emit_next_record+0x252/0x4f0 [ 11.269857][ T84] ? devkmsg_read+0x4e0/0x4e0 [ 11.269861][ T84] ? rcu_is_watching+0x16/0xd0 [ 11.269864][ T84] ? lock_acquire+0x13c/0x160 [ 11.269867][ T84] console_flush_one_record+0x46f/0x710 [ 11.269871][ T84] ? console_emit_next_record+0x4f0/0x4f0 [ 11.269873][ T84] ? __lock_acquire+0x518/0xc20 [ 11.269878][ T84] console_unlock+0xee/0x1f0 [ 11.269880][ T84] ? console_flush_one_record+0x710/0x710 [ 11.269882][ T84] ? rcu_is_watching+0x16/0xd0 [ 11.269884][ T84] ? lock_acquire+0xa0/0x160 [ 11.269888][ T84] ? __down_trylock_console_sem+0x5e/0xa0 [ 11.269889][ T84] ? vprintk_emit+0x320/0x3e0 [ 11.269893][ T84] vprintk_emit+0x37c/0x3e0 [ 11.269899][ T84] ? wake_up_klogd_work_func+0x90/0x90 [ 11.269902][ T84] ? __lock_acquire+0x518/0xc20 [ 11.269905][ T84] _printk+0xc7/0x100 [ 11.269909][ T84] ? snapshot_read.cold+0x21/0x21 [ 11.269912][ T84] ? do_raw_spin_lock+0x131/0x280 [ 11.269914][ T84] ? __rwlock_init+0x150/0x150 [ 11.269918][ T84] ? do_raw_spin_lock+0x131/0x280 [ 11.269920][ T84] do_exit.cold+0x82/0x9c [ 11.269924][ T84] ? exit_notify+0x890/0x890 [ 11.269925][ T84] ? __lock_release.isra.0+0x69/0x1a0 [ 11.269927][ T84] ? rcu_is_watching+0x16/0xd0 [ 11.269931][ T84] do_group_exit+0xb8/0x370 [ 11.269934][ T84] __x64_sys_exit_group+0x3c/0x50 [ 11.269936][ T84] x64_sys_call+0x1567/0x1570 [ 11.269938][ T84] do_syscall_64+0xff/0x530 [ 11.269941][ T84] ? irq_exit_rcu+0x1a/0x30 [ 11.269944][ T84] entry_SYSCALL_64_after_hwframe+0x4b/0x53 [ 11.269946][ T84] RIP: 0033:0x7f3daba1b1b8 [ 11.269948][ T84] Code: Unable to access opcode bytes at 0x7f3daba1b18e. [ 11.269949][ T84] RSP: 002b:00007ffc1b250488 EFLAGS: 00000256 ORIG_RAX: 00000000000000e7 [ 11.269952][ T84] RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 00007f3daba1b1b8 [ 11.269953][ T84] RDX: 0000000000000000 RSI: fffffffffffffe90 RDI: 0000000000000000 [ 11.269954][ T84] RBP: 00007ffc1b250610 R08: 0000559f9bd95f48 R09: 0000000000000000 [ 11.269955][ T84] R10: 0000000000000000 R11: 0000000000000256 R12: 0000000000000000 [ 11.269955][ T84] R13: 00007f3dab279050 R14: 00007f3dabf4cd9e R15: 0000559f9bd9d330 [ 11.269962][ T84]