[ 12.708121][ T84] (udev-worker) (84) used greatest stack depth: 22696 bytes left [ 12.708139][ T84] BUG: sleeping function called from invalid context at ./include/linux/sched/mm.h:322 [ 12.708141][ T84] in_atomic(): 1, irqs_disabled(): 1, non_block: 0, pid: 84, name: (udev-worker) [ 12.708143][ T84] preempt_count: 2, expected: 0 [ 12.708144][ T84] RCU nest depth: 0, expected: 0 [ 12.708145][ T84] locks held by (udev-worker)/84: 5, last CPU#3: [ 12.708147][ T84] #0: ffffffffa3e027b8 (low_water_lock){+.+.}-{3:3}, at: do_exit+0x887/0xdc0 [ 12.708159][ T84] #1: ffffffffa3f99dc0 (console_lock){+.+.}-{0:0}, at: vprintk_emit+0x320/0x3e0 [ 12.708164][ T84] #2: ffffffffa3f99e38 (console_srcu){....}-{0:0}, at: console_flush_one_record+0x106/0x710 [ 12.708168][ T84] #3: ffffffffa3e89760 (console_owner){....}-{0:0}, at: console_lock_spinning_enable+0x40/0x60 [ 12.708172][ T84] #4: ffffffffa3e89660 (printk_legacy_map-wait-type-override){....}-{3:3}, at: console_emit_next_record+0x202/0x4f0 [ 12.708176][ T84] irq event stamp: 499304 [ 12.708177][ T84] hardirqs last enabled at (499303): [] __down_trylock_console_sem+0x86/0xa0 [ 12.708180][ T84] hardirqs last disabled at (499304): [] console_emit_next_record+0x3f8/0x4f0 [ 12.708182][ T84] softirqs last enabled at (499240): [] netlink_release+0x17b/0xcf0 [ 12.708187][ T84] softirqs last disabled at (499238): [] netlink_release+0xd2/0xcf0 [ 12.708190][ T84] Preemption disabled at: [ 12.708190][ T84] [<0000000000000000>] 0x0 [ 12.708198][ T84] CPU: 3 UID: 0 PID: 84 Comm: (udev-worker) Tainted: G W 7.2.0-virtme #1 PREEMPT(full) [ 12.708201][ T84] Tainted: [W]=WARN [ 12.708202][ T84] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011 [ 12.708204][ T84] Call Trace: [ 12.708205][ T84] [ 12.708207][ T84] dump_stack_lvl+0x6f/0xa0 [ 12.708213][ T84] __might_resched.cold+0x1fe/0x2c1 [ 12.708218][ T84] ? perf_trace_sched_switch+0x7c0/0x7c0 [ 12.708222][ T84] ? __kmalloc_noprof+0xdb/0x760 [ 12.708227][ T84] __kmalloc_noprof+0x443/0x760 [ 12.708229][ T84] ? alloc_buf.isra.0+0x4b/0x260 [ 12.708236][ T84] ? do_raw_spin_unlock+0x59/0x250 [ 12.708238][ T84] alloc_buf.isra.0+0x4b/0x260 [ 12.708242][ T84] put_chars+0x1e1/0x2f0 [ 12.708245][ T84] ? __send_to_port+0x420/0x420 [ 12.708247][ T84] ? printk_get_next_message+0x2fe/0x7d0 [ 12.708251][ T84] ? rcu_read_lock_any_held+0x3c/0x90 [ 12.708254][ T84] ? validate_chain+0x38b/0xc20 [ 12.708258][ T84] hvc_console_print+0x292/0x780 [ 12.708262][ T84] ? __lock_acquire+0x518/0xc20 [ 12.708264][ T84] ? __lock_acquire+0x518/0xc20 [ 12.708268][ T84] ? hvc_write+0x3a0/0x3a0 [ 12.708272][ T84] ? rcu_is_watching+0x16/0xd0 [ 12.708275][ T84] ? lock_acquire+0x13c/0x160 [ 12.708279][ T84] console_emit_next_record+0x252/0x4f0 [ 12.708283][ T84] ? devkmsg_read+0x4e0/0x4e0 [ 12.708287][ T84] ? rcu_is_watching+0x16/0xd0 [ 12.708289][ T84] ? lock_acquire+0x13c/0x160 [ 12.708293][ T84] console_flush_one_record+0x46f/0x710 [ 12.708297][ T84] ? console_emit_next_record+0x4f0/0x4f0 [ 12.708299][ T84] ? __lock_acquire+0x518/0xc20 [ 12.708304][ T84] console_unlock+0xee/0x1f0 [ 12.708307][ T84] ? console_flush_one_record+0x710/0x710 [ 12.708309][ T84] ? rcu_is_watching+0x16/0xd0 [ 12.708311][ T84] ? lock_acquire+0xa0/0x160 [ 12.708314][ T84] ? __down_trylock_console_sem+0x5e/0xa0 [ 12.708316][ T84] ? vprintk_emit+0x320/0x3e0 [ 12.708319][ T84] vprintk_emit+0x37c/0x3e0 [ 12.708323][ T84] ? wake_up_klogd_work_func+0x90/0x90 [ 12.708326][ T84] ? __lock_acquire+0x518/0xc20 [ 12.708330][ T84] _printk+0xc7/0x100 [ 12.708334][ T84] ? snapshot_read.cold+0x21/0x21 [ 12.708336][ T84] ? do_raw_spin_lock+0x131/0x280 [ 12.708339][ T84] ? __rwlock_init+0x150/0x150 [ 12.708344][ T84] ? do_raw_spin_lock+0x131/0x280 [ 12.708347][ T84] do_exit.cold+0x82/0x9c [ 12.708351][ T84] ? exit_notify+0x890/0x890 [ 12.708352][ T84] ? __lock_release.isra.0+0x69/0x1a0 [ 12.708355][ T84] ? rcu_is_watching+0x16/0xd0 [ 12.708359][ T84] do_group_exit+0xb8/0x370 [ 12.708362][ T84] __x64_sys_exit_group+0x3c/0x50 [ 12.708364][ T84] x64_sys_call+0x1567/0x1570 [ 12.708366][ T84] do_syscall_64+0xff/0x530 [ 12.708369][ T84] ? exc_page_fault+0xee/0x100 [ 12.708372][ T84] entry_SYSCALL_64_after_hwframe+0x4b/0x53 [ 12.708374][ T84] RIP: 0033:0x7f4ff5d781b8 [ 12.708377][ T84] Code: Unable to access opcode bytes at 0x7f4ff5d7818e. [ 12.708378][ T84] RSP: 002b:00007ffd8cdc4658 EFLAGS: 00000256 ORIG_RAX: 00000000000000e7 [ 12.708380][ T84] RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 00007f4ff5d781b8 [ 12.708382][ T84] RDX: 0000000000000000 RSI: fffffffffffffe90 RDI: 0000000000000000 [ 12.708382][ T84] RBP: 00007ffd8cdc47e0 R08: 0000562b1352b9c8 R09: 0000000000000000 [ 12.708383][ T84] R10: 0000000000000000 R11: 0000000000000256 R12: 0000000000000000 [ 12.708384][ T84] R13: 00007f4ff55d6050 R14: 00007f4ff62a9d9e R15: 0000562b13525500 [ 12.708391][ T84]