[ 14.904663][ T184] (udev-worker) (184) used greatest stack depth: 22696 bytes left [ 14.904684][ T184] BUG: sleeping function called from invalid context at ./include/linux/sched/mm.h:322 [ 14.904687][ T184] in_atomic(): 1, irqs_disabled(): 1, non_block: 0, pid: 184, name: (udev-worker) [ 14.904688][ T184] preempt_count: 2, expected: 0 [ 14.904689][ T184] RCU nest depth: 0, expected: 0 [ 14.904690][ T184] locks held by (udev-worker)/184: 5, last CPU#2: [ 14.904692][ T184] #0: ffffffff9c6027b8 (low_water_lock){+.+.}-{3:3}, at: do_exit+0x887/0xdc0 [ 14.904704][ T184] #1: ffffffff9c799cc0 (console_lock){+.+.}-{0:0}, at: vprintk_emit+0x320/0x3e0 [ 14.904709][ T184] #2: ffffffff9c799d38 (console_srcu){....}-{0:0}, at: console_flush_one_record+0x106/0x710 [ 14.904714][ T184] #3: ffffffff9c689660 (console_owner){....}-{0:0}, at: console_lock_spinning_enable+0x40/0x60 [ 14.904717][ T184] #4: ffffffff9c689560 (printk_legacy_map-wait-type-override){....}-{3:3}, at: console_emit_next_record+0x202/0x4f0 [ 14.904722][ T184] irq event stamp: 101122 [ 14.904723][ T184] hardirqs last enabled at (101121): [] __down_trylock_console_sem+0x86/0xa0 [ 14.904726][ T184] hardirqs last disabled at (101122): [] console_emit_next_record+0x3f8/0x4f0 [ 14.904728][ T184] softirqs last enabled at (101058): [] netlink_release+0x17b/0xcf0 [ 14.904732][ T184] softirqs last disabled at (101056): [] netlink_release+0xd2/0xcf0 [ 14.904735][ T184] Preemption disabled at: [ 14.904735][ T184] [<0000000000000000>] 0x0 [ 14.904742][ T184] CPU: 2 UID: 0 PID: 184 Comm: (udev-worker) Tainted: G W 7.2.0-virtme #1 PREEMPT(full) [ 14.904746][ T184] Tainted: [W]=WARN [ 14.904747][ T184] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011 [ 14.904749][ T184] Call Trace: [ 14.904750][ T184] [ 14.904752][ T184] dump_stack_lvl+0x6f/0xa0 [ 14.904759][ T184] __might_resched.cold+0x1fe/0x2c1 [ 14.904763][ T184] ? perf_trace_sched_switch+0x7c0/0x7c0 [ 14.904768][ T184] ? __kmalloc_noprof+0xdb/0x760 [ 14.904780][ T184] __kmalloc_noprof+0x443/0x760 [ 14.904783][ T184] ? alloc_buf.isra.0+0x4b/0x260 [ 14.904789][ T184] ? do_raw_spin_unlock+0x59/0x250 [ 14.904792][ T184] alloc_buf.isra.0+0x4b/0x260 [ 14.904795][ T184] put_chars+0x1e1/0x2f0 [ 14.904799][ T184] ? __send_to_port+0x420/0x420 [ 14.904800][ T184] ? printk_get_next_message+0x2fe/0x7d0 [ 14.904804][ T184] ? rcu_read_lock_any_held+0x3c/0x90 [ 14.904808][ T184] ? validate_chain+0x38b/0xc20 [ 14.904812][ T184] hvc_console_print+0x292/0x780 [ 14.904816][ T184] ? __lock_acquire+0x518/0xc20 [ 14.904817][ T184] ? __lock_acquire+0x518/0xc20 [ 14.904822][ T184] ? hvc_write+0x3a0/0x3a0 [ 14.904825][ T184] ? rcu_is_watching+0x16/0xd0 [ 14.904827][ T184] ? lock_acquire+0x13c/0x160 [ 14.904831][ T184] console_emit_next_record+0x252/0x4f0 [ 14.904835][ T184] ? devkmsg_read+0x4e0/0x4e0 [ 14.904840][ T184] ? rcu_is_watching+0x16/0xd0 [ 14.904841][ T184] ? lock_acquire+0x13c/0x160 [ 14.904845][ T184] console_flush_one_record+0x46f/0x710 [ 14.904850][ T184] ? console_emit_next_record+0x4f0/0x4f0 [ 14.904852][ T184] ? __lock_acquire+0x518/0xc20 [ 14.904857][ T184] console_unlock+0xee/0x1f0 [ 14.904860][ T184] ? console_flush_one_record+0x710/0x710 [ 14.904862][ T184] ? rcu_is_watching+0x16/0xd0 [ 14.904864][ T184] ? lock_acquire+0x60/0x160 [ 14.904867][ T184] ? __down_trylock_console_sem+0x5e/0xa0 [ 14.904869][ T184] ? vprintk_emit+0x320/0x3e0 [ 14.904872][ T184] vprintk_emit+0x37c/0x3e0 [ 14.904875][ T184] ? wake_up_klogd_work_func+0x90/0x90 [ 14.904878][ T184] ? __lock_acquire+0x518/0xc20 [ 14.904882][ T184] _printk+0xc7/0x100 [ 14.904886][ T184] ? snapshot_read.cold+0x21/0x21 [ 14.904889][ T184] ? do_raw_spin_lock+0x131/0x280 [ 14.904891][ T184] ? __rwlock_init+0x150/0x150 [ 14.904895][ T184] ? do_raw_spin_lock+0x131/0x280 [ 14.904898][ T184] do_exit.cold+0x82/0x9c [ 14.904902][ T184] ? exit_notify+0x890/0x890 [ 14.904903][ T184] ? __lock_release.isra.0+0x69/0x1a0 [ 14.904906][ T184] ? rcu_is_watching+0x16/0xd0 [ 14.904910][ T184] do_group_exit+0xb8/0x370 [ 14.904912][ T184] __x64_sys_exit_group+0x3c/0x50 [ 14.904914][ T184] x64_sys_call+0x1567/0x1570 [ 14.904916][ T184] do_syscall_64+0xff/0x530 [ 14.904920][ T184] ? irq_exit_rcu+0x1a/0x30 [ 14.904924][ T184] entry_SYSCALL_64_after_hwframe+0x4b/0x53 [ 14.904926][ T184] RIP: 0033:0x7fd1f75f51b8 [ 14.904928][ T184] Code: Unable to access opcode bytes at 0x7fd1f75f518e. [ 14.904929][ T184] RSP: 002b:00007ffff8dfbbc8 EFLAGS: 00000256 ORIG_RAX: 00000000000000e7 [ 14.904932][ T184] RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 00007fd1f75f51b8 [ 14.904933][ T184] RDX: 0000000000000000 RSI: fffffffffffffe90 RDI: 0000000000000000 [ 14.904934][ T184] RBP: 00007ffff8dfbd50 R08: 000055ee08cfc768 R09: 0000000000000000 [ 14.904935][ T184] R10: 0000000000000000 R11: 0000000000000256 R12: 0000000000000000 [ 14.904935][ T184] R13: 00007fd1f6e53050 R14: 00007fd1f7b26d9e R15: 000055ee08b91010 [ 14.904942][ T184]