[ 15.623858][ T184] (udev-worker) (184) used greatest stack depth: 22696 bytes left [ 15.623880][ T184] BUG: sleeping function called from invalid context at ./include/linux/sched/mm.h:322 [ 15.623883][ T184] in_atomic(): 1, irqs_disabled(): 1, non_block: 0, pid: 184, name: (udev-worker) [ 15.623884][ T184] preempt_count: 2, expected: 0 [ 15.623885][ T184] RCU nest depth: 0, expected: 0 [ 15.623886][ T184] locks held by (udev-worker)/184: 5, last CPU#3: [ 15.623888][ T184] #0: ffffffffa6e027b8 (low_water_lock){+.+.}-{3:3}, at: do_exit+0x887/0xdc0 [ 15.623900][ T184] #1: ffffffffa6f99cc0 (console_lock){+.+.}-{0:0}, at: vprintk_emit+0x320/0x3e0 [ 15.623905][ T184] #2: ffffffffa6f99d38 (console_srcu){....}-{0:0}, at: console_flush_one_record+0x106/0x710 [ 15.623910][ T184] #3: ffffffffa6e89660 (console_owner){....}-{0:0}, at: console_lock_spinning_enable+0x40/0x60 [ 15.623914][ T184] #4: ffffffffa6e89560 (printk_legacy_map-wait-type-override){....}-{3:3}, at: console_emit_next_record+0x202/0x4f0 [ 15.623918][ T184] irq event stamp: 124992 [ 15.623919][ T184] hardirqs last enabled at (124991): [] __down_trylock_console_sem+0x86/0xa0 [ 15.623922][ T184] hardirqs last disabled at (124992): [] console_emit_next_record+0x3f8/0x4f0 [ 15.623924][ T184] softirqs last enabled at (124928): [] netlink_release+0x17b/0xcf0 [ 15.623929][ T184] softirqs last disabled at (124926): [] netlink_release+0xd2/0xcf0 [ 15.623932][ T184] Preemption disabled at: [ 15.623932][ T184] [<0000000000000000>] 0x0 [ 15.623939][ T184] CPU: 3 UID: 0 PID: 184 Comm: (udev-worker) Tainted: G W 7.2.0-virtme #1 PREEMPT(full) [ 15.623943][ T184] Tainted: [W]=WARN [ 15.623944][ T184] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011 [ 15.623945][ T184] Call Trace: [ 15.623947][ T184] [ 15.623949][ T184] dump_stack_lvl+0x6f/0xa0 [ 15.623955][ T184] __might_resched.cold+0x1fe/0x2c1 [ 15.623960][ T184] ? perf_trace_sched_switch+0x7c0/0x7c0 [ 15.623965][ T184] ? __kmalloc_noprof+0xdb/0x760 [ 15.623971][ T184] __kmalloc_noprof+0x443/0x760 [ 15.623973][ T184] ? alloc_buf.isra.0+0x4b/0x260 [ 15.623980][ T184] ? do_raw_spin_unlock+0x59/0x250 [ 15.623989][ T184] alloc_buf.isra.0+0x4b/0x260 [ 15.623993][ T184] put_chars+0x1e1/0x2f0 [ 15.623996][ T184] ? __send_to_port+0x420/0x420 [ 15.623999][ T184] ? printk_get_next_message+0x2fe/0x7d0 [ 15.624003][ T184] ? rcu_read_lock_any_held+0x3c/0x90 [ 15.624006][ T184] ? validate_chain+0x38b/0xc20 [ 15.624011][ T184] hvc_console_print+0x292/0x780 [ 15.624015][ T184] ? __lock_acquire+0x518/0xc20 [ 15.624016][ T184] ? __lock_acquire+0x518/0xc20 [ 15.624021][ T184] ? hvc_write+0x3a0/0x3a0 [ 15.624025][ T184] ? rcu_is_watching+0x16/0xd0 [ 15.624027][ T184] ? lock_acquire+0x13c/0x160 [ 15.624032][ T184] console_emit_next_record+0x252/0x4f0 [ 15.624036][ T184] ? devkmsg_read+0x4e0/0x4e0 [ 15.624040][ T184] ? rcu_is_watching+0x16/0xd0 [ 15.624042][ T184] ? lock_acquire+0x13c/0x160 [ 15.624046][ T184] console_flush_one_record+0x46f/0x710 [ 15.624051][ T184] ? console_emit_next_record+0x4f0/0x4f0 [ 15.624053][ T184] ? __lock_acquire+0x518/0xc20 [ 15.624058][ T184] console_unlock+0xee/0x1f0 [ 15.624062][ T184] ? console_flush_one_record+0x710/0x710 [ 15.624064][ T184] ? rcu_is_watching+0x16/0xd0 [ 15.624065][ T184] ? lock_acquire+0x60/0x160 [ 15.624069][ T184] ? __down_trylock_console_sem+0x5e/0xa0 [ 15.624071][ T184] ? vprintk_emit+0x320/0x3e0 [ 15.624074][ T184] vprintk_emit+0x37c/0x3e0 [ 15.624077][ T184] ? wake_up_klogd_work_func+0x90/0x90 [ 15.624081][ T184] ? __lock_acquire+0x518/0xc20 [ 15.624086][ T184] _printk+0xc7/0x100 [ 15.624089][ T184] ? snapshot_read.cold+0x21/0x21 [ 15.624092][ T184] ? do_raw_spin_lock+0x131/0x280 [ 15.624095][ T184] ? __rwlock_init+0x150/0x150 [ 15.624099][ T184] ? do_raw_spin_lock+0x131/0x280 [ 15.624102][ T184] do_exit.cold+0x82/0x9c [ 15.624107][ T184] ? exit_notify+0x890/0x890 [ 15.624108][ T184] ? __lock_release.isra.0+0x69/0x1a0 [ 15.624111][ T184] ? rcu_is_watching+0x16/0xd0 [ 15.624115][ T184] do_group_exit+0xb8/0x370 [ 15.624118][ T184] __x64_sys_exit_group+0x3c/0x50 [ 15.624120][ T184] x64_sys_call+0x1567/0x1570 [ 15.624122][ T184] do_syscall_64+0xff/0x530 [ 15.624126][ T184] ? exc_page_fault+0xee/0x100 [ 15.624129][ T184] entry_SYSCALL_64_after_hwframe+0x4b/0x53 [ 15.624131][ T184] RIP: 0033:0x7fe05e1261b8 [ 15.624134][ T184] Code: Unable to access opcode bytes at 0x7fe05e12618e. [ 15.624135][ T184] RSP: 002b:00007ffc7cf8e678 EFLAGS: 00000256 ORIG_RAX: 00000000000000e7 [ 15.624138][ T184] RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 00007fe05e1261b8 [ 15.624139][ T184] RDX: 0000000000000000 RSI: fffffffffffffe90 RDI: 0000000000000000 [ 15.624140][ T184] RBP: 00007ffc7cf8e800 R08: 0000556d20760bd8 R09: 0000000000000000 [ 15.624141][ T184] R10: 0000000000000000 R11: 0000000000000256 R12: 0000000000000000 [ 15.624142][ T184] R13: 00007fe05d984050 R14: 00007fe05e657d9e R15: 0000556d205d5040 [ 15.624149][ T184]